/* ==========================================================================
   Lab Report Generator — Stylesheet
   Clean, modern UI aimed at university students.  Indigo primary with warm
   accents.  No framework — vanilla CSS with CSS custom properties.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* Primary palette */
    --color-primary:       #4F46E5;
    --color-primary-hover: #4338CA;
    --color-primary-light: #EEF2FF;
    --color-primary-border:#C7D2FE;

    /* Neutrals */
    --color-bg:            #F8FAFC;
    --color-surface:       #FFFFFF;
    --color-text:          #1E293B;
    --color-text-secondary:#64748B;
    --color-text-muted:    #94A3B8;
    --color-border:        #E2E8F0;
    --color-border-light:  #F1F5F9;

    /* Semantic */
    --color-success:       #10B981;
    --color-success-bg:    #ECFDF5;
    --color-success-border:#A7F3D0;
    --color-error:         #EF4444;
    --color-error-bg:      #FEF2F2;
    --color-error-border:  #FECACA;
    --color-warning:       #F59E0B;
    --color-warning-bg:    #FFFBEB;
    --color-warning-border:#FDE68A;

    /* Shadows */
    --shadow-sm:  0 1px 2px rgba(0,0,0,0.05);
    --shadow:     0 1px 3px rgba(0,0,0,0.10), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md:  0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg:  0 10px 15px rgba(0,0,0,0.10), 0 4px 6px rgba(0,0,0,0.05);

    /* Radii */
    --radius-sm: 6px;
    --radius:    10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space:    16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;

    /* Typography */
    --font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei",
                   "Helvetica Neue", Arial, sans-serif;
    --font-mono:   "JetBrains Mono", "Fira Code", "Consolas", monospace;

    /* Transitions */
    --transition: 0.2s ease;
    --transition-slow: 0.35s ease;
}

/* --------------------------------------------------------------------------
   Reset & Base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover {
    color: var(--color-primary-hover);
}

img { max-width: 100%; display: block; }

/* --------------------------------------------------------------------------
   Container
   -------------------------------------------------------------------------- */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--space);
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}
h1 { font-size: 1.75rem; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.125rem; }

.text-muted { color: var(--color-text-muted); }

.section-title {
    font-size: 1.125rem;
    margin-bottom: var(--space);
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: inherit;
    line-height: 1.4;
    border: 1.5px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #fff;
}

.btn-secondary {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary-border);
}
.btn-secondary:hover {
    background: var(--color-primary-border);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}
.btn-outline:hover {
    background: var(--color-bg);
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.0625rem;
    border-radius: var(--radius);
}

.btn-block {
    width: 100%;
}

.btn-download {
    margin-top: var(--space);
    padding: 12px 32px;
    font-size: 1rem;
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.form-group {
    margin-bottom: var(--space-md);
}
.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}
.form-label .required {
    color: var(--color-error);
}

.form-input {
    display: block;
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}
.form-input::placeholder {
    color: var(--color-text-muted);
}
.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}
.form-hint-error {
    color: var(--color-error);
}

/* --------------------------------------------------------------------------
   Alerts
   -------------------------------------------------------------------------- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: var(--space);
    border: 1px solid transparent;
}
.alert-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border-color: var(--color-error-border);
}
.alert-success {
    background: var(--color-success-bg);
    color: var(--color-success);
    border-color: var(--color-success-border);
}

/* --------------------------------------------------------------------------
   Auth Page
   -------------------------------------------------------------------------- */
.auth-page {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space);
    text-align: center;
}

.auth-header {
    margin-bottom: var(--space-lg);
}

.auth-logo {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.auth-tagline {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.auth-quota-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary-light), #F0FDF4);
    color: var(--color-primary);
    padding: 4px 16px;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    border: 1px solid var(--color-primary-border);
}

.auth-panels {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    align-items: start;
    margin-bottom: var(--space-xl);
}

.auth-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-md);
    text-align: left;
    box-shadow: var(--shadow);
}

.auth-card-title {
    font-size: 1.25rem;
    margin-bottom: 2px;
}

.auth-card-subtitle {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    margin-bottom: var(--space-md);
}

.auth-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--space);
    min-height: 100%;
}

.auth-divider-text {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    background: var(--color-bg);
    padding: 4px 8px;
}

.auth-footer {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

.welcome-modal[hidden] {
    display: none;
}

.welcome-modal {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space);
    overflow: hidden;
}

.welcome-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.48);
}

.welcome-modal-card {
    position: relative;
    width: min(560px, 100%);
    max-height: calc(100dvh - 32px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-lg);
    padding: var(--space-lg);
}

.welcome-modal-body {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex: 1 1 auto;
    min-height: 0;
}

.welcome-modal-card > .btn {
    flex-shrink: 0;
    margin-top: var(--space);
}

.welcome-modal-close {
    position: absolute;
    top: 10px;
    right: 12px;
    border: 0;
    background: transparent;
    font-size: 1.5rem;
    color: var(--color-text-muted);
    cursor: pointer;
}

.welcome-kicker {
    color: var(--color-primary);
    font-weight: 800;
    font-size: 0.8125rem;
    margin-bottom: 4px;
}

.welcome-modal-card h2 {
    font-size: 1.375rem;
    margin-bottom: 8px;
}

.welcome-lead {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space);
}

.welcome-list {
    display: grid;
    gap: 10px;
    margin-bottom: var(--space-md);
}

.welcome-list div {
    display: grid;
    gap: 3px;
    padding: 10px 12px;
    background: #F8FAFC;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
}

.welcome-list strong {
    font-size: 0.875rem;
}

.welcome-list span {
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    line-height: 1.55;
}

/* --------------------------------------------------------------------------
   Dashboard
   -------------------------------------------------------------------------- */
.dashboard-page {
    padding: var(--space) 0 var(--space-xl);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space) 0;
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.dashboard-header-left {
    display: flex;
    align-items: center;
    gap: var(--space);
}

.dashboard-header-right {
    display: flex;
    align-items: center;
    gap: var(--space);
}

.dashboard-logo {
    font-size: 1.25rem;
    white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Flow Step Indicator (cross-page context)
   -------------------------------------------------------------------------- */
.flow-steps {
    display: flex;
    align-items: center;
    gap: 0;
    flex-shrink: 0;
}

.flow-step {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: transparent;
    border-radius: var(--radius-full);
    white-space: nowrap;
    transition: all var(--transition);
    text-decoration: none;
}

.flow-step-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border);
    flex-shrink: 0;
    transition: background var(--transition);
}

.flow-step.active {
    color: var(--color-primary);
    font-weight: 700;
    background: var(--color-primary-light);
}

.flow-step.active .flow-step-dot {
    background: var(--color-primary);
}

.flow-step.done {
    color: #059669;
}

.flow-step.done .flow-step-dot {
    background: #10B981;
}

.flow-step-arrow {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    margin: 0 2px;
    flex-shrink: 0;
}

/* Compact step indicator for mobile */
.flow-steps-compact {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

.flow-steps-compact .flow-step-current {
    font-weight: 700;
    color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Context Badge (draft editing, report status indicators)
   -------------------------------------------------------------------------- */
.context-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.context-badge.draft {
    background: #FEF3C7;
    color: #92400E;
    border: 1px solid #FCD34D;
}

.context-badge.info {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border: 1px solid var(--color-primary-border);
}

/* --------------------------------------------------------------------------
   Report Context Header (report title carried across pages)
   -------------------------------------------------------------------------- */
.report-context-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding: 12px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    margin-bottom: var(--space-md);
}

.report-context-header .report-context-title {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 360px;
}

.report-context-header .report-context-id {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.quota-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary-border);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--color-primary);
    white-space: nowrap;
}
.quota-badge strong {
    font-weight: 700;
}

.quota-warning {
    margin-top: var(--space-sm);
    color: var(--color-warning);
    font-size: 0.875rem;
}

/* Dashboard hero */
.dashboard-hero {
    text-align: center;
    padding: var(--space-xl) var(--space);
    margin-bottom: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}
.dashboard-hero h2 {
    color: var(--color-text-secondary);
    font-weight: 400;
    font-size: 1rem;
    margin-bottom: var(--space);
}

.recharge-panel {
    display: grid;
    grid-template-columns: minmax(160px, 220px) 1fr;
    gap: var(--space-md);
    align-items: center;
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}
.recharge-balance {
    padding: 14px 16px;
    border: 1px solid var(--color-primary-border);
    border-radius: var(--radius);
    background: var(--color-primary-light);
}
.recharge-balance span {
    display: block;
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
}
.recharge-balance strong {
    display: block;
    margin-top: 2px;
    color: var(--color-primary);
    font-size: 1.5rem;
    line-height: 1.2;
}
.recharge-copy h3 {
    margin-bottom: 4px;
    font-size: 1rem;
}
.recharge-copy p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}
.recharge-note {
    margin-top: 6px;
}

.dashboard-reports {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
}

/* --------------------------------------------------------------------------
   Table
   -------------------------------------------------------------------------- */
.table-wrapper {
    overflow-x: auto;
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}
.report-table th {
    text-align: left;
    padding: 10px 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}
.report-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text);
}
.report-table tr:last-child td {
    border-bottom: none;
}
.report-table tr:hover td {
    background: var(--color-bg);
}

.report-title-cell {
    font-weight: 500;
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.report-date {
    color: var(--color-text-secondary);
    white-space: nowrap;
    font-size: 0.8125rem;
}

.report-actions {
    white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Status Badges
   -------------------------------------------------------------------------- */
.status-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.status-pending {
    background: #F1F5F9;
    color: #64748B;
}

.status-generating {
    background: #EEF2FF;
    color: #4F46E5;
    animation: pulse 2s ease-in-out infinite;
}

.status-done {
    background: #ECFDF5;
    color: #059669;
}

.status-failed {
    background: #FEF2F2;
    color: #DC2626;
}

/* --------------------------------------------------------------------------
   Empty State
   -------------------------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: var(--space-xl) var(--space);
    color: var(--color-text-muted);
}
.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--space);
}
.empty-state p {
    font-size: 0.9375rem;
}
.empty-state-hint {
    font-size: 0.8125rem;
    margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   New Report Page
   -------------------------------------------------------------------------- */
.new-report-page {
    padding: var(--space) 0 var(--space-xl);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    transition: color var(--transition);
}
.back-link:hover {
    color: var(--color-primary);
}

.form-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow);
    max-width: 720px;
    margin: 0 auto;
}

.form-card-title {
    font-size: 1.375rem;
    margin-bottom: 4px;
}

.form-card-subtitle {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
}

.stepper {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: var(--space-md);
    padding: 6px;
    background: #F8FAFC;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
}

.step-tab {
    border: 0;
    background: transparent;
    color: var(--color-text-secondary);
    padding: 10px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all var(--transition);
}

.step-tab span {
    width: 22px;
    height: 22px;
    border-radius: var(--radius-full);
    background: #E2E8F0;
    color: #475569;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.step-tab.active {
    color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.step-tab.active span {
    background: var(--color-primary);
    color: #fff;
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

.step-advice {
    display: grid;
    gap: 4px;
    padding: 12px 14px;
    margin-bottom: var(--space-md);
    border: 1px solid #C7D2FE;
    background: #EEF2FF;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.55;
}

.step-advice strong {
    color: var(--color-text);
}

.template-format-alert {
    display: grid;
    gap: 4px;
    padding: 12px 14px;
    margin: calc(var(--space-sm) * -1) 0 var(--space-md);
    border: 1px solid var(--color-warning-border);
    border-left: 5px solid var(--color-warning);
    background: var(--color-warning-bg);
    border-radius: var(--radius-sm);
    color: #78350F;
    font-size: 0.875rem;
    line-height: 1.55;
}

.template-format-alert strong {
    color: #92400E;
}

.template-format-alert span {
    color: #78350F;
}

.scope-alert {
    display: grid;
    gap: 4px;
    padding: 12px 14px;
    margin: 0 0 var(--space-md);
    border: 1px solid var(--color-warning-border);
    border-left: 5px solid var(--color-warning);
    background: var(--color-warning-bg);
    border-radius: var(--radius-sm);
    color: #78350F;
    font-size: 0.875rem;
    line-height: 1.55;
}

.scope-alert strong {
    color: #92400E;
}

.image-mode-panel {
    display: grid;
    gap: 10px;
    padding: 14px;
    margin: calc(var(--space-sm) * -1) 0 var(--space-md);
    border: 1px solid #A7F3D0;
    border-left: 5px solid #10B981;
    background: #ECFDF5;
    border-radius: var(--radius-sm);
    color: #064E3B;
    font-size: 0.875rem;
    line-height: 1.55;
}

.image-mode-head {
    display: grid;
    gap: 2px;
}

.image-mode-head strong {
    color: #065F46;
}

.image-mode-head span,
.image-mode-tip {
    color: #047857;
    font-size: 0.8125rem;
}

.image-mode-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.image-mode-card {
    cursor: pointer;
}

.image-mode-card input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.image-mode-card > span {
    display: grid;
    gap: 4px;
    min-height: 108px;
    padding: 12px;
    border: 2px solid #D1FAE5;
    border-radius: var(--radius-sm);
    background: #FFFFFF;
    transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.image-mode-card input:checked + span {
    border-color: #10B981;
    background: #F0FDF4;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.12);
}

.image-mode-card strong {
    color: #064E3B;
    font-size: 0.875rem;
    line-height: 1.35;
}

.image-mode-card em {
    display: inline-block;
    margin-left: 4px;
    padding: 1px 6px;
    border-radius: var(--radius-full);
    background: #22C55E;
    color: #FFFFFF;
    font-style: normal;
    font-size: 0.6875rem;
}

.image-mode-card small {
    color: #047857;
    font-size: 0.75rem;
    line-height: 1.45;
}

.reserve-image-row {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #065F46;
    font-size: 0.875rem;
    font-weight: 700;
}

.reserve-image-row[hidden] {
    display: none;
}

.step-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.step-help {
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    background: #F8FAFC;
    margin-top: var(--space-sm);
}

.step-help summary {
    cursor: pointer;
    padding: 10px 12px;
    font-weight: 700;
    font-size: 0.875rem;
}

.step-help pre {
    margin: 0;
    padding: 0 12px 12px;
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--color-text-secondary);
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    font-size: 0.8125rem;
    line-height: 1.6;
}

.placeholder-help {
    border-color: #A7F3D0;
    background: #ECFDF5;
    border-left: 5px solid #10B981;
}

.placeholder-help summary {
    color: #065F46;
}

.placeholder-help pre {
    color: #064E3B;
    font-weight: 600;
}

.form-section-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.profile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm) var(--space);
}

.remember-row {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    cursor: pointer;
}

.remember-row input {
    width: 16px;
    height: 16px;
}

.long-text-input {
    resize: vertical;
    min-height: 132px;
    line-height: 1.6;
}

.template-folder-notice {
    padding: 12px 16px;
    margin-bottom: var(--space-md);
    background: #EEF2FF;
    border: 1px solid #C7D2FE;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--color-text);
    line-height: 1.6;
}
.template-folder-notice .link-text {
    color: var(--color-primary);
    font-weight: 600;
}

.upload-guide {
    margin-bottom: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #F8FAFC;
    overflow: hidden;
}

.upload-guide summary {
    cursor: pointer;
    padding: 12px 16px;
    font-weight: 700;
    color: var(--color-text);
    user-select: none;
}

.upload-guide-body {
    border-top: 1px solid var(--color-border-light);
    padding: 0 16px 16px;
}

.upload-guide-lead {
    margin: 12px 0;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

.upload-guide-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.upload-guide section {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    padding: 12px;
}

.upload-guide h3 {
    font-size: 0.9375rem;
    margin-bottom: 8px;
}

.upload-guide ul {
    margin: 0;
    padding-left: 18px;
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    line-height: 1.65;
}

.upload-guide li {
    margin-bottom: 4px;
}

.upload-guide pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   File Drop Zone
   -------------------------------------------------------------------------- */
.file-drop-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-xl) var(--space);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--color-bg);
    position: relative;
}
.file-drop-zone:hover,
.file-drop-zone-active {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.file-input-hidden {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.file-drop-content {
    pointer-events: none;
}

.file-drop-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.file-drop-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}
.file-drop-text .link-text {
    color: var(--color-primary);
    font-weight: 500;
}

.file-drop-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* File list */
.file-list {
    margin-top: var(--space);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 0.875rem;
    background: var(--color-surface);
}
.file-item:last-child {
    border-bottom: none;
}

.file-item-icon {
    flex-shrink: 0;
}

.file-item-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}

.file-item-size {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    flex-shrink: 0;
}

.file-item-remove {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
    transition: color var(--transition);
}
.file-item-remove:hover {
    color: var(--color-error);
}

/* --------------------------------------------------------------------------
   Radio Card Group
   -------------------------------------------------------------------------- */
.radio-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

.radio-card {
    display: block;
    cursor: pointer;
}
.radio-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.radio-card-content {
    display: block;
    padding: var(--space);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    transition: all var(--transition);
    background: var(--color-surface);
}

.radio-card input[type="radio"]:checked + .radio-card-content {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.radio-card-title {
    display: block;
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: 2px;
    color: var(--color-text);
}

.radio-card-desc {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Quota Notice
   -------------------------------------------------------------------------- */
.quota-notice {
    margin: var(--space-md) 0;
    padding: 10px 16px;
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: #92400E;
}
.quota-notice strong {
    font-weight: 700;
}

/* --------------------------------------------------------------------------
   Preflight Page
   -------------------------------------------------------------------------- */
.preflight-page {
    padding: var(--space) 0 var(--space-xl);
}

.preflight-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow);
    max-width: 860px;
    margin: 0 auto;
}

.preflight-head {
    margin-bottom: var(--space-md);
}

.preflight-kicker {
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.8125rem;
    margin-bottom: 4px;
}

.preflight-head h2 {
    font-size: 1.375rem;
    margin-bottom: 6px;
}

.preflight-head p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.preflight-warning {
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    border-radius: var(--radius-sm);
    color: #92400E;
    padding: 12px 14px;
    margin-bottom: var(--space-md);
    font-size: 0.875rem;
}

.preflight-warning ul {
    margin: 8px 0 0;
    padding-left: 18px;
    line-height: 1.6;
}

.preflight-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: var(--space-md);
}

.preflight-item {
    display: grid;
    grid-template-columns: 32px 1fr;
    gap: 10px;
    align-items: start;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    padding: 12px;
    background: #F8FAFC;
}

.preflight-item.ok .preflight-item-status {
    background: #ECFDF5;
    color: #059669;
}

.preflight-item.warn .preflight-item-status {
    background: #FFFBEB;
    color: #B45309;
}

.preflight-item-status {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.preflight-item h3 {
    font-size: 0.9375rem;
    margin-bottom: 3px;
}

.preflight-item p {
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    line-height: 1.5;
}

.preflight-details {
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    overflow: hidden;
}

.preflight-note {
    display: grid;
    gap: 4px;
    padding: 12px 14px;
    margin-bottom: var(--space-md);
    border: 1px solid #C7D2FE;
    border-radius: var(--radius-sm);
    background: #EEF2FF;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.55;
}

.preflight-note strong {
    color: var(--color-text);
}

.preflight-running {
    margin-bottom: var(--space-md);
    padding: 16px;
    border: 1px solid var(--color-primary-border);
    border-radius: var(--radius);
    background: var(--color-primary-light);
    color: var(--color-text);
}
.preflight-running strong {
    display: block;
    margin-top: 10px;
    font-size: 0.95rem;
}
.preflight-running span {
    display: block;
    margin-top: 2px;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.billing-panel {
    display: grid;
    gap: 10px;
    margin-bottom: var(--space-md);
    padding: 14px;
    border: 1px solid var(--color-success-border);
    border-radius: var(--radius);
    background: var(--color-success-bg);
}
.billing-panel.warn {
    border-color: var(--color-warning-border);
    background: var(--color-warning-bg);
}
.billing-panel strong {
    display: block;
    color: var(--color-text);
    font-size: 0.9rem;
}
.billing-panel span {
    display: block;
    margin-top: 2px;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.image-plan-section {
    margin-bottom: var(--space-md);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius);
    background: #F8FAFC;
    overflow: hidden;
}

.image-plan-head {
    display: grid;
    gap: 3px;
    padding: 12px 14px;
    background: #ECFDF5;
    border-bottom: 1px solid #A7F3D0;
}

.image-plan-head strong {
    color: #065F46;
}

.image-plan-head span {
    color: #047857;
    font-size: 0.8125rem;
}

.image-plan-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 12px;
}

.image-plan-card {
    padding: 12px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
}

.image-plan-card.insert {
    border-color: #A7F3D0;
}

.image-plan-card.reserve,
.image-plan-card.over_limit {
    border-color: #FDE68A;
}

.image-plan-card.docx_embedded {
    border-color: #C7D2FE;
}

.image-plan-card-top {
    display: grid;
    gap: 2px;
    margin-bottom: 8px;
}

.image-plan-card-top strong {
    color: var(--color-text);
    font-size: 0.9375rem;
}

.image-plan-card-top span {
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
}

.image-plan-card p {
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    line-height: 1.55;
    margin: 0 0 4px;
}

.image-plan-card b {
    color: var(--color-text);
}

.preflight-details summary {
    cursor: pointer;
    padding: 10px 12px;
    font-weight: 600;
    background: #F8FAFC;
}

.preflight-details pre {
    margin: 0;
    padding: 12px;
    max-height: 240px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

.image-analysis-details {
    border-color: #A7F3D0;
    background: #ECFDF5;
}

.image-analysis-details summary {
    color: #065F46;
}

.image-analysis-details pre {
    color: #064E3B;
    max-height: 360px;
}

.preflight-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    flex-wrap: wrap;
}

.preflight-actions form {
    margin: 0;
    display: grid;
    gap: 8px;
    justify-items: end;
}

.preflight-checkbox {
    display: inline-flex;
    align-items: flex-start;
    gap: 8px;
    max-width: 420px;
    padding: 8px 10px;
    border: 1px solid #FDE68A;
    border-radius: var(--radius-sm);
    background: #FFFBEB;
    color: #92400E;
    font-size: 0.8125rem;
    line-height: 1.45;
    cursor: pointer;
}

.preflight-checkbox input {
    margin-top: 2px;
}

/* --------------------------------------------------------------------------
   Progress Page
   -------------------------------------------------------------------------- */
.progress-page {
    padding: var(--space) 0 var(--space-xl);
}

.progress-info {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.progress-report-title {
    font-size: 1.25rem;
    margin-bottom: 4px;
}

.progress-report-id {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Progress card */
.progress-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    max-width: 520px;
    margin: 0 auto;
    box-shadow: var(--shadow);
    transition: border-color var(--transition-slow);
}
.progress-card.done {
    border-color: var(--color-success-border);
    background: linear-gradient(to bottom, #fff, var(--color-success-bg));
}
.progress-card.failed {
    border-color: var(--color-error-border);
    background: linear-gradient(to bottom, #fff, var(--color-error-bg));
}

.progress-icon {
    font-size: 3.5rem;
    margin-bottom: var(--space);
}

.progress-mascot {
    --progress: 0%;
    position: relative;
    height: 58px;
    margin-bottom: var(--space);
}

.progress-mascot::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 28px;
    height: 6px;
    border-radius: var(--radius-full);
    background: #E2E8F0;
}

.progress-mascot span {
    position: absolute;
    top: 6px;
    left: min(calc(var(--progress) - 18px), calc(100% - 36px));
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: #fff;
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
    font-size: 1.25rem;
    transition: left 0.4s ease;
}

.progress-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.progress-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space);
}

.progress-hint {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    margin-top: var(--space);
}

.error-detail {
    color: var(--color-error);
    font-size: 0.8125rem;
    word-break: break-word;
    max-height: 120px;
    overflow-y: auto;
    line-height: 1.5;
}

.progress-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space);
    flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Progress Bar
   -------------------------------------------------------------------------- */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto;
}

.progress-bar-fill {
    height: 100%;
    border-radius: var(--radius-full);
    background: linear-gradient(
        90deg,
        var(--color-primary) 0%,
        #818CF8 50%,
        var(--color-primary) 100%
    );
    background-size: 200% 100%;
    transition: width 0.5s ease;
}
.progress-bar-fill.indeterminate {
    width: 40%;
    animation: indeterminateProgress 1.8s ease-in-out infinite;
}

.progress-track {
    position: relative;
    width: 100%;
    height: 10px;
    background: #E2E8F0;
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-track-fill {
    height: 100%;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, var(--color-primary), #22C55E);
    transition: width 0.45s ease;
}

.progress-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    margin-top: 10px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.progress-steps span {
    padding: 4px 6px;
    border-radius: var(--radius-full);
    background: #F8FAFC;
}

.progress-steps span.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
    font-weight: 700;
}

.progress-steps span.done {
    color: #059669;
    background: #ECFDF5;
    font-weight: 700;
}

@keyframes indeterminateProgress {
    0%   { transform: translateX(-100%); }
    50%  { transform: translateX(150%); }
    100% { transform: translateX(400%); }
}

/* --------------------------------------------------------------------------
   Error Page
   -------------------------------------------------------------------------- */
.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding: var(--space-xl);
}

.error-page-card {
    text-align: center;
    max-width: 420px;
}
.error-page-icon {
    font-size: 4rem;
    margin-bottom: var(--space);
}
.error-page-card h1 {
    font-size: 1.375rem;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}
.error-page-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.6; }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.progress-card {
    animation: fadeIn 0.3s ease;
}


/* --------------------------------------------------------------------------
   Balance / Recharge Page — single-column, 720px max-width
   -------------------------------------------------------------------------- */
.balance-page {
    max-width: 720px;
    margin: 0 auto;
    padding: var(--space) var(--space) var(--space-xl);
}

.balance-page > .dashboard-header {
    margin-bottom: var(--space);
}

/* ---- card base ---- */
.bal-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.bal-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    margin-bottom: var(--space);
    flex-wrap: wrap;
}

.bal-card-title {
    font-size: 1.0625rem;
    font-weight: 700;
    margin: 0;
}

.bal-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin: 0 0 var(--space);
}

.bal-chip {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border: 1px solid var(--color-primary-border);
}

/* ---- top bar ---- */
.balance-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-md);
}

.balance-title-row h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 2px;
}

.balance-title-row p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin: 0;
}

.balance-amount {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    white-space: nowrap;
}

/* ---- QR block ---- */
.qr-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space) 0 0;
}

.qr-img-box {
    width: 180px;
    height: 180px;
    padding: 8px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    margin-bottom: 12px;
}

.qr-img-box img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: crisp-edges;
    image-rendering: -webkit-optimize-contrast;
}

.qr-note {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.qr-email-tip {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
    padding: 6px 14px;
    background: #F8FAFC;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-light);
    max-width: 100%;
    word-break: break-all;
}

.qr-email-tip code {
    font-weight: 600;
    color: var(--color-primary);
    background: none;
    padding: 0;
}

.audit-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 16px;
    padding: 8px 14px;
    background: #F8FAFC;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border-light);
    width: 100%;
}

.audit-sep {
    color: var(--color-border);
}

/* ---- amount chips ---- */
.amount-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.amount-btn {
    flex: 1;
    min-width: 70px;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: center;
    font-family: inherit;
    position: relative;
}

.amount-btn:hover {
    border-color: var(--color-primary-border);
    background: var(--color-primary-light);
}

.amount-btn.selected {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,0.15);
}

.amount-btn input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.amount-btn-custom.selected {
    border-color: var(--color-warning);
    background: var(--color-warning-bg);
    color: #92400E;
}

.custom-amount-wrap {
    margin-top: 10px;
    display: none;
}

.custom-amount-wrap.show {
    display: block;
}

.custom-amount-wrap input {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--color-primary-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
    background: var(--color-primary-light);
}

.custom-amount-wrap input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,0.1);
}

/* ---- form fields ---- */
.field {
    margin-bottom: var(--space);
}

.field-label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-text);
    margin-bottom: 6px;
}

/* ---- upload zone ---- */
.upload-box {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: 10px;
    padding: 28px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s ease;
    background: #FAFBFC;
}

.upload-box:hover,
.upload-box.drag-over {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.upload-box.has-file {
    border-color: var(--color-success-border);
    background: var(--color-success-bg);
    border-style: solid;
}

.upload-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    font-size: 1.75rem;
    margin-bottom: 6px;
}

.upload-placeholder {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.upload-placeholder strong {
    color: var(--color-primary);
}

.upload-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.upload-preview {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-success-border);
    border-radius: 8px;
    font-size: 0.8125rem;
    margin-top: 10px;
}

.upload-preview-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
}

.upload-preview-del {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 1.125rem;
    padding: 0 4px;
    line-height: 1;
}

.upload-preview-del:hover {
    color: var(--color-error);
}

/* ---- submit ---- */
.submit-row {
    margin-top: var(--space-md);
}

.submit-btn {
    width: 100%;
    padding: 13px 20px;
    font-size: 1rem;
    font-weight: 600;
}

.limit-text {
    font-size: 0.8125rem;
    color: var(--color-error);
    margin: 0 0 10px;
    text-align: center;
}

.balance-notice {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-align: center;
    margin-top: var(--space-sm);
}

/* ---- history table ---- */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.bal-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.bal-table thead th {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 2px solid var(--color-border);
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 0.8125rem;
    white-space: nowrap;
}

.bal-table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text);
}

.bal-table tbody tr:last-child td {
    border-bottom: none;
}

.bal-table tbody tr:hover {
    background: #F8FAFC;
}

.td-time {
    white-space: nowrap;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

.td-amount {
    font-weight: 600;
}

.td-note {
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

/* ---- status tags ---- */
.bal-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.tag-pending {
    background: #FEF3C7;
    color: #92400E;
}

.tag-approved {
    background: #DCFCE7;
    color: #166534;
}

.tag-rejected {
    background: #FEE2E2;
    color: #991B1B;
}

.bal-empty {
    text-align: center;
    padding: var(--space-lg);
    color: var(--color-text-muted);
}

.bal-empty span {
    font-size: 2rem;
    display: block;
    margin-bottom: 8px;
}

.bal-empty p {
    font-size: 0.875rem;
}

/* ---- support card ---- */
.support-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.support-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: #F8FAFC;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
}

.support-item code {
    font-weight: 600;
    font-size: 0.8125rem;
}

.copy-btn {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
}

.copy-btn:hover {
    background: var(--color-primary-light);
}

.copy-btn.copied {
    color: var(--color-success);
}

.support-time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ---- responsive ---- */
@media (max-width: 640px) {
    .balance-page {
        padding: var(--space-sm) var(--space-sm) var(--space-lg);
    }

    .bal-card {
        padding: var(--space);
    }

    .qr-img-box {
        width: 150px;
        height: 150px;
    }

    .amount-btn {
        padding: 10px 12px;
        font-size: 0.9375rem;
    }

    .td-note {
        max-width: 80px;
    }
}

/* ---- card base ---- */
.bal-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.bal-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    margin-bottom: var(--space);
    flex-wrap: wrap;
}

.bal-card-header h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    margin: 0;
}

.bal-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.bal-badge.info {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border: 1px solid var(--color-primary-border);
}

/* ---- QR card ---- */
.qr-card-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.qr-img-box {
    width: 180px;
    height: 180px;
    padding: 8px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    margin-bottom: 12px;
}

.qr-img-box img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: crisp-edges;
    image-rendering: -webkit-optimize-contrast;
}

.qr-card-body .qr-hint {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.qr-email-tip {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
    padding: 6px 14px;
    background: #F8FAFC;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-light);
    max-width: 100%;
    word-break: break-all;
}

.qr-email-tip code {
    font-weight: 600;
    color: var(--color-primary);
    background: none;
    padding: 0;
}

.audit-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    padding: 8px 14px;
    background: #F8FAFC;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border-light);
    width: 100%;
}

/* ---- amount chips ---- */
.amount-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.amount-chip {
    flex: 1;
    min-width: 70px;
    padding: 12px 8px;
    border: 2px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    font-family: inherit;
    position: relative;
}

.amount-chip:hover {
    border-color: var(--color-primary-border);
    background: var(--color-primary-light);
}

.amount-chip.selected {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,0.12);
}

.amount-chip input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.amount-chip-label {
    pointer-events: none;
}

/* custom amount input */
.custom-amount-wrap {
    margin-top: 10px;
}

.custom-amount-input {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9375rem;
    font-family: inherit;
    border: 1.5px solid var(--color-primary-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: all var(--transition);
    background: var(--color-primary-light);
}

.custom-amount-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,0.12);
}

/* ---- form field ---- */
.form-field {
    margin-bottom: var(--space);
}

.form-field:last-child {
    margin-bottom: 0;
}

.field-label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-text);
    margin-bottom: 6px;
}

.field-label .optional {
    font-weight: 400;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

/* ---- drop zone ---- */
.drop-zone {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: 10px;
    padding: 24px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: #FAFBFC;
}

.drop-zone:hover,
.drop-zone.drop-zone-active {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.drop-zone-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.drop-zone-content {
    pointer-events: none;
}

.drop-zone-icon {
    font-size: 1.75rem;
    display: block;
    margin-bottom: 4px;
}

.drop-zone-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.drop-zone-text strong {
    color: var(--color-primary);
}

.drop-zone-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.drop-preview {
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: var(--color-success-bg);
    border: 1px solid var(--color-success-border);
    border-radius: 8px;
}

.drop-preview img {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

.drop-preview-name {
    flex: 1;
    font-size: 0.8125rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.drop-preview-remove {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 1.125rem;
    padding: 2px 6px;
    border-radius: 4px;
    flex-shrink: 0;
}

.drop-preview-remove:hover {
    color: var(--color-error);
    background: var(--color-error-bg);
}

/* ---- submit ---- */
.limit-notice {
    font-size: 0.8125rem;
    color: var(--color-error);
    margin-bottom: 8px;
}

/* ---- history table ---- */
.recharge-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.recharge-table thead th {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 2px solid var(--color-border);
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 0.8125rem;
    white-space: nowrap;
}

.recharge-table tbody td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text);
}

.recharge-table tbody tr:last-child td {
    border-bottom: none;
}

.recharge-table tbody tr:hover {
    background: #F8FAFC;
}

.cell-time {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.cell-amount {
    font-weight: 600;
    white-space: nowrap;
}

.cell-note {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recharge-status-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.recharge-status-tag.status-pending {
    background: #FEF3C7;
    color: #92400E;
}

.recharge-status-tag.status-approved {
    background: #DCFCE7;
    color: #166534;
}

.recharge-status-tag.status-rejected {
    background: #FEE2E2;
    color: #991B1B;
}

/* ---- empty state ---- */
.empty-state-sm {
    text-align: center;
    padding: var(--space-lg);
    color: var(--color-text-muted);
}

.empty-state-sm .empty-icon {
    font-size: 2rem;
    margin-bottom: 6px;
}

.empty-state-sm p {
    font-size: 0.875rem;
    margin: 0;
}

/* ---- support card ---- */
.support-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space);
}

.support-contacts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--space-sm);
}

.support-contact-row {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    background: #F8FAFC;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
}

.support-contact-row code {
    font-weight: 600;
    background: none;
    padding: 0;
    font-size: 0.8125rem;
}

.support-hours {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* ---- responsive: balance ---- */
@media (max-width: 600px) {
    .balance-page {
        padding: var(--space-sm) var(--space-sm) var(--space-lg);
    }

    .bal-card {
        padding: var(--space);
    }

    .qr-img-box {
        width: 150px;
        height: 150px;
    }

    .amount-chips {
        flex-direction: column;
    }

    .amount-chip {
        min-width: auto;
    }

    .recharge-table thead th:nth-child(3),
    .recharge-table tbody td:nth-child(3) {
        display: none;
    }

    .support-contact-row {
        font-size: 0.75rem;
    }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-sm);
    }

    /* Auth panels: stack vertically */
    .auth-panels {
        grid-template-columns: 1fr;
        gap: var(--space);
    }
    .auth-divider {
        padding: var(--space-sm) 0;
    }
    .auth-divider::before,
    .auth-divider::after {
        content: '';
    }
    .auth-divider-text {
        background: var(--color-bg);
        padding: 4px 12px;
    }

    .auth-card {
        padding: var(--space-md);
    }

    /* Dashboard header */
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }

    /* Radio cards stack */
    .radio-group {
        grid-template-columns: 1fr;
    }

    .profile-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .stepper {
        gap: 4px;
    }

    .step-tab {
        flex-direction: column;
        gap: 4px;
        padding: 8px 4px;
        font-size: 0.75rem;
    }

    /* Hide less-critical columns in report table */
    .report-date {
        display: none;
    }
    .report-table th:nth-child(3),
    .report-table td:nth-child(3) {
        display: none;
    }

    .form-card {
        padding: var(--space);
    }

    .step-actions {
        justify-content: stretch;
    }

    .step-actions .btn,
    .step-actions button {
        width: 100%;
    }

    .upload-guide-grid {
        grid-template-columns: 1fr;
    }

    .image-mode-options {
        grid-template-columns: 1fr;
    }

    .image-mode-card > span {
        min-height: auto;
    }

    .upload-guide summary,
    .upload-guide-body {
        padding-left: 12px;
        padding-right: 12px;
    }

    .preflight-grid {
        grid-template-columns: 1fr;
    }

    .image-plan-grid {
        grid-template-columns: 1fr;
    }

    .preflight-actions {
        justify-content: stretch;
    }

    .preflight-actions .btn,
    .preflight-actions form,
    .preflight-actions button {
        width: 100%;
    }

    .preflight-actions form {
        justify-items: stretch;
    }

    .preflight-checkbox {
        max-width: none;
        width: 100%;
    }

    .progress-card {
        padding: var(--space-md);
    }

    /* Balance page: single column already, fine-tune */
    .amount-btn {
        min-width: auto;
    }

    .qr-block {
        padding: var(--space-md);
    }

    .submit-row .btn {
        width: 100%;
    }

    .support-links {
        flex-direction: column;
        gap: 8px;
    }

    .flow-steps {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 1.375rem; }
    h2 { font-size: 1.125rem; }

    .btn-lg {
        padding: 12px 20px;
        font-size: 0.9375rem;
    }

    .dashboard-hero {
        padding: var(--space);
    }

    .recharge-panel {
        grid-template-columns: 1fr;
        gap: var(--space);
        padding: var(--space);
    }

    .auth-logo {
        font-size: 1.5rem;
    }

    .report-actions .btn-sm {
        padding: 4px 10px;
        font-size: 0.75rem;
    }

    /* Welcome modal: mobile scrolling */
    .welcome-modal {
        align-items: flex-start;
        padding: 12px;
    }

    .welcome-modal-card {
        max-height: calc(100dvh - 24px);
        margin: auto 0;
        border-radius: var(--radius);
        padding: var(--space-md);
    }

    .welcome-modal-body {
        max-height: calc(100dvh - 140px);
    }

    .welcome-modal-close {
        top: 6px;
        right: 8px;
    }
}

.redeem-grid,
.qima-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space);
}

.redeem-form,
.qima-form {
    display: grid;
    gap: var(--space);
}

.code-input,
.qima-code {
    font-family: Consolas, "Courier New", monospace;
    letter-spacing: 0;
}

.redeem-tip {
    margin-top: 12px;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.xianyu-copy {
    margin-top: 14px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    background: #f8fafc;
    border-radius: var(--radius);
    color: var(--color-text);
    overflow-wrap: anywhere;
}

.xianyu-copy p {
    margin: 0;
    line-height: 1.65;
}

.xianyu-copy p + p {
    margin-top: 4px;
    color: var(--text-muted);
}

.qima-page {
    max-width: 980px;
    margin: 36px auto;
}

.qima-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space);
    margin-bottom: var(--space-lg);
}

.qima-kicker {
    color: var(--primary);
    font-weight: 700;
    font-size: 0.8125rem;
}

.qima-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-lg);
    margin-bottom: var(--space);
}

.qima-login {
    max-width: 460px;
    margin: 70px auto;
}

.qima-code {
    overflow-wrap: anywhere;
    padding: 18px;
    background: #f8fafc;
    border: 1px dashed var(--border);
    font-size: 1.25rem;
    font-weight: 700;
    text-align: center;
}

.qima-amount {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.qima-actions {
    display: flex;
    gap: 10px;
    margin-top: 12px;
}

.pricing-rules {
    margin-top: 14px;
    padding: 14px;
    border: 1px solid var(--border);
    background: #f8fafc;
    border-radius: var(--radius);
}

.pricing-rules p {
    margin: 8px 0 0;
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}

.pricing-rules.compact {
    margin: 12px 0;
}

.pricing-table-wrap {
    overflow-x: auto;
    margin-top: 10px;
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.pricing-table th,
.pricing-table td {
    padding: 9px 10px;
    border: 1px solid var(--border);
    text-align: center;
    white-space: nowrap;
}

.pricing-table th {
    background: #eef2ff;
}

.material-entry-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.material-entry {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    background: #fff;
}

.material-entry .form-label {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.help-icon {
    display: inline-flex;
    width: 18px;
    height: 18px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: help;
    background: #f8fafc;
}

.inline-text-panel {
    margin-top: 10px;
    border-top: 1px dashed var(--border);
    padding-top: 10px;
}

.inline-text-panel summary {
    cursor: pointer;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.875rem;
}

.inline-text-panel textarea {
    margin-top: 10px;
}

.model-choice-panel {
    margin: 16px 0;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #f8fafc;
}

.model-choice-panel strong {
    display: block;
    margin-bottom: 10px;
}

.model-choice-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.model-choice-card {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    cursor: pointer;
    font-weight: 700;
}

@media (max-width: 720px) {
    .redeem-grid,
    .qima-grid,
    .material-entry-list {
        grid-template-columns: 1fr;
    }

    .qima-header {
        align-items: flex-start;
    }

    .pricing-table {
        table-layout: fixed;
        font-size: 0.75rem;
    }

    .pricing-table th,
    .pricing-table td {
        padding: 7px 3px;
        white-space: normal;
        overflow-wrap: anywhere;
    }
}