/* ==========================================================================
   TOMBRO-ACC — SKEUOMORPHISM (PAPER CUT 3D) DESIGN SYSTEM
   Ultra-Modern Tactile Accounting & AI Financial Audit Interface
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
    /* Color Palette - Paper & Ink */
    --paper-desk: #ece7de;
    --paper-desk-gradient: linear-gradient(135deg, #f0ece3 0%, #e6e0d3 100%);
    --paper-sheet: #ffffff;
    --paper-sheet-subtle: #faf8f5;
    --paper-sheet-warm: #fcfbf9;
    --paper-crease: #e2ddd3;
    --paper-border: rgba(0, 0, 0, 0.08);
    --paper-border-crisp: #ded8cb;

    /* Corporate & Accounting Inks */
    --ink-primary: #111827;
    --ink-secondary: #4b5563;
    --ink-muted: #6b7280;
    --ink-faint: #9ca3af;
    --ink-blueprint: #1e3a8a;

    /* Primary Accent - Deep Tobacco Navy & Rich Amber Gold */
    --primary: #1e293b;
    --primary-light: #334155;
    --primary-dark: #0f172a;
    --primary-highlight: #475569;
    --accent: #b45309;
    --accent-gold: #d97706;
    --accent-warm: #f59e0b;

    /* Financial State Accents */
    --success: #059669;
    --success-bg: #ecfdf5;
    --success-border: #a7f3d0;
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    --danger-border: #fecaca;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --warning-border: #fde68a;
    --info: #0284c7;
    --info-bg: #f0f9ff;
    --info-border: #bae6fd;
    --ai-purple: #7c3aed;
    --ai-bg: #f5f3ff;
    --ai-border: #ddd6fe;

    /* Paper Cut 3D Shadows & Layering */
    --shadow-layer-1: 0 1px 2px rgba(44, 39, 32, 0.06), 0 2px 4px rgba(44, 39, 32, 0.04);
    --shadow-layer-2: 0 3px 6px -1px rgba(44, 39, 32, 0.08), 0 2px 4px -1px rgba(44, 39, 32, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    --shadow-layer-3: 0 10px 25px -5px rgba(44, 39, 32, 0.12), 0 8px 10px -6px rgba(44, 39, 32, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.95);
    --shadow-floating: 0 20px 35px -10px rgba(44, 39, 32, 0.18), 0 1px 3px rgba(44, 39, 32, 0.08), inset 0 1px 0 rgba(255, 255, 255, 1);
    --shadow-pressed: inset 0 2px 4px rgba(44, 39, 32, 0.12), inset 0 1px 2px rgba(44, 39, 32, 0.16);

    /* Paper Edge & Perforation */
    --paper-radius: 12px;
    --paper-radius-sm: 8px;
    --paper-radius-lg: 16px;
    --paper-radius-pill: 9999px;

    /* Typography */
    --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

/* --------------------------------------------------------------------------
   RESET & BASE STYLES
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-main);
    background: var(--paper-desk-gradient);
    color: var(--ink-primary);
    min-height: 100vh;
    line-height: 1.5;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    background-attachment: fixed;
}

/* Subtle Desk Texture */
body::before {
    content: "";
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0.035;
    pointer-events: none;
    background-image: radial-gradient(#222 1px, transparent 1px);
    background-size: 20px 20px;
    z-index: 9999;
}

a {
    color: var(--ink-blueprint);
    text-decoration: none;
    transition: all 0.15s ease;
}
a:hover {
    color: var(--accent);
}

/* Monospace Financial Figures */
.num, .tabular-nums, .currency, [data-format="currency"] {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
}

/* --------------------------------------------------------------------------
   LAYOUT ARCHITECTURE (Desk & Folders)
   -------------------------------------------------------------------------- */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar - Deep Leather / Bound Ledger Style */
.sidebar {
    width: 270px;
    background: linear-gradient(180deg, #182235 0%, #0f172a 100%);
    color: #e2e8f0;
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
    z-index: 100;
    position: sticky;
    top: 0;
    height: 100vh;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-header {
    padding: 24px 20px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-badge {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 4px 10px rgba(180, 83, 9, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.brand-info h1 {
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 0.03em;
    color: #ffffff;
    line-height: 1.2;
}

.brand-info .tagline {
    font-size: 11px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}

/* Navigation List */
.nav-menu {
    list-style: none;
    padding: 16px 12px;
    overflow-y: auto;
    flex: 1;
}

.nav-section-title {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #64748b;
    padding: 14px 12px 6px;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    color: #94a3b8;
    font-weight: 500;
    font-size: 13.5px;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.nav-link i {
    font-size: 16px;
    width: 20px;
    text-align: center;
    transition: transform 0.2s;
}

.nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.07);
    transform: translateX(3px);
}

.nav-link.active {
    color: #ffffff;
    background: linear-gradient(90deg, rgba(217, 119, 6, 0.2) 0%, rgba(217, 119, 6, 0.05) 100%);
    font-weight: 600;
    border-left: 3px solid #f59e0b;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link.active i {
    color: #f59e0b;
    transform: scale(1.1);
}

.nav-badge {
    margin-left: auto;
    background: rgba(255, 255, 255, 0.12);
    color: #cbd5e1;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 20px;
}

.nav-badge.danger {
    background: #ef4444;
    color: #fff;
}

/* Sidebar Footer (Status & AI status) */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(15, 23, 42, 0.6);
}

.ai-pill-status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: rgba(124, 58, 237, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: var(--paper-radius-sm);
    color: #c4b5fd;
    font-size: 12px;
}

.ai-pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #a855f7;
    box-shadow: 0 0 8px #a855f7;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(168, 85, 247, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(168, 85, 247, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(168, 85, 247, 0); }
}

/* Main Content Workspace (Desk Surface) */
.main-stage {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow-x: hidden;
}

/* Top Desk Bar */
.top-bar {
    background: var(--paper-sheet);
    border-bottom: 1px solid var(--paper-border-crisp);
    padding: 14px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-layer-1);
    position: sticky;
    top: 0;
    z-index: 50;
}

.breadcrumb-area {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--ink-secondary);
}

.breadcrumb-item.active {
    font-weight: 700;
    color: var(--ink-primary);
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

/* Content Area */
.content-body {
    padding: 28px;
    flex: 1;
    max-width: 1560px;
    width: 100%;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   PAPER CUT 3D COMPONENTS
   -------------------------------------------------------------------------- */

/* 1. Paper Cut Card */
.paper-card {
    background: var(--paper-sheet);
    border-radius: var(--paper-radius);
    border: 1px solid var(--paper-border-crisp);
    box-shadow: var(--shadow-layer-2);
    position: relative;
    padding: 24px;
    margin-bottom: 24px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.paper-card.elevated {
    box-shadow: var(--shadow-layer-3);
}

.paper-card.interactive:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-floating);
}

/* Paper Header with Bookmark Accent */
.paper-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1.5px dashed var(--paper-crease);
    position: relative;
}

.paper-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--ink-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.paper-title i {
    color: var(--accent);
}

.paper-subtitle {
    font-size: 12.5px;
    color: var(--ink-muted);
    margin-top: 2px;
}

/* Paper Cut Layered Tabs */
.paper-tabs {
    display: flex;
    gap: 4px;
    border-bottom: 2px solid var(--paper-border-crisp);
    margin-bottom: 20px;
    padding: 0 4px;
}

.paper-tab {
    padding: 10px 18px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--ink-secondary);
    border: 1px solid transparent;
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    background: transparent;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    bottom: -2px;
}

.paper-tab:hover {
    color: var(--ink-primary);
    background: rgba(255, 255, 255, 0.6);
}

.paper-tab.active {
    background: var(--paper-sheet);
    color: var(--ink-primary);
    border-color: var(--paper-border-crisp);
    border-bottom: 2px solid var(--paper-sheet);
    box-shadow: 0 -3px 8px rgba(0, 0, 0, 0.03);
}

/* 2. Tactile 3D Buttons */
.btn-paper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 18px;
    font-size: 13.5px;
    font-weight: 600;
    border-radius: var(--paper-radius-sm);
    cursor: pointer;
    transition: all 0.12s ease;
    text-decoration: none;
    border: 1px solid var(--paper-border-crisp);
    background: var(--paper-sheet);
    color: var(--ink-primary);
    box-shadow: 0 2px 0 var(--paper-crease), 0 3px 6px rgba(0, 0, 0, 0.05);
    position: relative;
    top: 0;
}

.btn-paper:hover {
    background: #fdfdfd;
    transform: translateY(-1px);
    box-shadow: 0 3px 0 var(--paper-crease), 0 5px 10px rgba(0, 0, 0, 0.08);
}

.btn-paper:active {
    transform: translateY(2px);
    box-shadow: 0 0 0 transparent, var(--shadow-pressed);
}

/* Primary 3D Button */
.btn-paper-primary {
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    color: #ffffff;
    border: 1px solid #0f172a;
    box-shadow: 0 3px 0 #020617, 0 4px 10px rgba(15, 23, 42, 0.3);
}

.btn-paper-primary:hover {
    background: linear-gradient(180deg, #273549 0%, #172033 100%);
    color: #ffffff;
    box-shadow: 0 4px 0 #020617, 0 6px 14px rgba(15, 23, 42, 0.4);
}

.btn-paper-primary:active {
    transform: translateY(3px);
    box-shadow: 0 0 0 transparent, inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* Launch Button (Hero Glow) */
.btn-paper-launch {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    color: #ffffff;
    border: 1px solid #92400e;
    box-shadow: 0 4px 0 #78350f, 0 6px 16px rgba(217, 119, 6, 0.4);
    font-size: 14.5px;
    padding: 11px 24px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.btn-paper-launch:hover {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: #ffffff;
    box-shadow: 0 5px 0 #78350f, 0 8px 20px rgba(217, 119, 6, 0.5);
}

.btn-paper-launch:active {
    transform: translateY(4px);
    box-shadow: 0 0 0 transparent, inset 0 2px 5px rgba(0, 0, 0, 0.4);
}

/* AI Magic Button */
.btn-paper-ai {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    color: #ffffff;
    border: 1px solid #5b21b6;
    box-shadow: 0 3px 0 #4c1d95, 0 5px 14px rgba(124, 58, 237, 0.35);
}

.btn-paper-ai:hover {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: #ffffff;
}

/* 3. Paper Cut Data Tables (Ledger Style) */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--paper-radius-sm);
    border: 1px solid var(--paper-border-crisp);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
    background: #fff;
}

.paper-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

.paper-table th {
    background: #f8fafc;
    color: var(--ink-secondary);
    font-weight: 700;
    padding: 12px 16px;
    border-bottom: 2px solid var(--paper-border-crisp);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.paper-table td {
    padding: 12px 16px;
    border-bottom: 1px solid #f1f5f9;
    color: var(--ink-primary);
    vertical-align: middle;
}

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

.paper-table tr:hover td {
    background-color: #f8fafc;
}

.paper-table th.text-right, .paper-table td.text-right {
    text-align: right;
}

.paper-table th.text-center, .paper-table td.text-center {
    text-align: center;
}

/* 4. Paper Cut Metric Cards & Badges */
.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.metric-card {
    background: var(--paper-sheet);
    border: 1px solid var(--paper-border-crisp);
    border-radius: var(--paper-radius);
    padding: 20px;
    box-shadow: var(--shadow-layer-2);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--primary);
}

.metric-card.success::before { background: var(--success); }
.metric-card.danger::before { background: var(--danger); }
.metric-card.warning::before { background: var(--warning); }
.metric-card.ai::before { background: var(--ai-purple); }

.metric-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ink-muted);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.metric-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--ink-primary);
    font-family: var(--font-mono);
    line-height: 1.2;
}

.metric-sub {
    font-size: 12px;
    color: var(--ink-muted);
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 5. Paper Badges (Stamps & Tags) */
.badge-paper {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.badge-paper.success {
    background: var(--success-bg);
    color: var(--success);
    border-color: var(--success-border);
}

.badge-paper.danger {
    background: var(--danger-bg);
    color: var(--danger);
    border-color: var(--danger-border);
}

.badge-paper.warning {
    background: var(--warning-bg);
    color: var(--warning);
    border-color: var(--warning-border);
}

.badge-paper.info {
    background: var(--info-bg);
    color: var(--info);
    border-color: var(--info-border);
}

.badge-paper.ai {
    background: var(--ai-bg);
    color: var(--ai-purple);
    border-color: var(--ai-border);
}

/* 6. Integrity Strip (3D Banner) */
.integrity-strip {
    background: linear-gradient(90deg, #ecfdf5 0%, #f0fdf4 100%);
    border: 1px solid #86efac;
    border-radius: var(--paper-radius);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 3px 10px rgba(5, 150, 105, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    margin-bottom: 24px;
}

.integrity-strip.failed {
    background: linear-gradient(90deg, #fef2f2 0%, #fff1f2 100%);
    border-color: #fca5a5;
    box-shadow: 0 3px 10px rgba(220, 38, 38, 0.1);
}

.integrity-strip-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.integrity-icon-box {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: #059669;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 2px 6px rgba(5, 150, 105, 0.3);
}

.integrity-strip.failed .integrity-icon-box {
    background: #dc2626;
    box-shadow: 0 2px 6px rgba(220, 38, 38, 0.3);
}

.integrity-title {
    font-size: 14.5px;
    font-weight: 700;
    color: #065f46;
}

.integrity-strip.failed .integrity-title {
    color: #991b1b;
}

.integrity-desc {
    font-size: 12.5px;
    color: #047857;
}

.integrity-strip.failed .integrity-desc {
    color: #b91c1c;
}

/* 7. Dropzone Paper Upload Box */
.paper-dropzone {
    border: 2px dashed #cbd5e1;
    border-radius: var(--paper-radius-lg);
    background: var(--paper-sheet-subtle);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-layer-1);
    position: relative;
}

.paper-dropzone:hover, .paper-dropzone.dragover {
    border-color: #d97706;
    background: #fffdfa;
    transform: translateY(-2px);
    box-shadow: var(--shadow-layer-3);
}

.dropzone-icon {
    font-size: 54px;
    color: #d97706;
    margin-bottom: 16px;
    display: inline-block;
    filter: drop-shadow(0 4px 6px rgba(217, 119, 6, 0.2));
}

.dropzone-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--ink-primary);
    margin-bottom: 6px;
}

.dropzone-hint {
    font-size: 13px;
    color: var(--ink-muted);
}

/* 8. Stepper Paper Cut Progress */
.paper-stepper {
    display: flex;
    justify-content: space-between;
    margin-bottom: 32px;
    position: relative;
}

.paper-stepper::before {
    content: "";
    position: absolute;
    top: 20px; left: 40px; right: 40px;
    height: 3px;
    background: var(--paper-crease);
    z-index: 1;
}

.step-item {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 140px;
}

.step-node {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--paper-sheet);
    border: 3px solid var(--paper-crease);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 15px;
    color: var(--ink-muted);
    box-shadow: var(--shadow-layer-1);
    transition: all 0.25s ease;
    margin-bottom: 8px;
}

.step-item.active .step-node {
    background: #1e293b;
    border-color: #d97706;
    color: #ffffff;
    box-shadow: 0 0 0 5px rgba(217, 119, 6, 0.2), var(--shadow-layer-2);
    transform: scale(1.1);
}

.step-item.completed .step-node {
    background: #059669;
    border-color: #059669;
    color: #ffffff;
}

.step-label {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--ink-muted);
}

.step-item.active .step-label {
    color: var(--ink-primary);
    font-weight: 700;
}

/* 9. Form Inputs (Paper Cut Pressed Fields) */
.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-secondary);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    font-size: 13.5px;
    font-family: var(--font-main);
    color: var(--ink-primary);
    background: #fff;
    border: 1px solid var(--paper-border-crisp);
    border-radius: var(--paper-radius-sm);
    box-shadow: var(--shadow-pressed);
    outline: none;
    transition: all 0.15s ease;
}

.form-control:focus {
    border-color: #3b82f6;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08), 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Form Helper & Error */
.form-hint {
    font-size: 11.5px;
    color: var(--ink-muted);
    margin-top: 4px;
}

/* 10. AI Chat Drawer / Widget */
.ai-assistant-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
}

.ai-fab {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.ai-fab:hover {
    transform: scale(1.08) translateY(-2px);
    box-shadow: 0 12px 30px rgba(124, 58, 237, 0.5);
}

/* AI Chat Window (Floating Paper Card) */
.ai-chat-panel {
    display: none;
    position: fixed;
    bottom: 94px;
    right: 24px;
    width: 420px;
    height: 580px;
    background: var(--paper-sheet);
    border-radius: var(--paper-radius-lg);
    border: 1px solid var(--paper-border-crisp);
    box-shadow: var(--shadow-floating);
    z-index: 1001;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.ai-chat-header {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #ffffff;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ai-chat-messages {
    flex: 1;
    padding: 18px;
    overflow-y: auto;
    background: #f8fafc;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-bubble {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.45;
}

.chat-bubble.user {
    align-self: flex-end;
    background: #1e293b;
    color: #ffffff;
    border-bottom-right-radius: 3px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.chat-bubble.ai {
    align-self: flex-start;
    background: #ffffff;
    color: var(--ink-primary);
    border: 1px solid var(--paper-border-crisp);
    border-bottom-left-radius: 3px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.ai-chat-input-area {
    padding: 14px;
    background: #ffffff;
    border-top: 1px solid var(--paper-border-crisp);
    display: flex;
    gap: 8px;
}

/* 11. Modal Dialog (Paper Cut Overlay) */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-dialog {
    background: var(--paper-sheet);
    border-radius: var(--paper-radius-lg);
    border: 1px solid var(--paper-border-crisp);
    box-shadow: var(--shadow-floating);
    width: 100%;
    max-width: 650px;
    overflow: hidden;
    animation: modalIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1.5px dashed var(--paper-crease);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 24px;
    max-height: 75vh;
    overflow-y: auto;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--paper-border-crisp);
    background: var(--paper-sheet-subtle);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* 12. Alert / Notice Box */
.alert-paper {
    padding: 14px 18px;
    border-radius: var(--paper-radius-sm);
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 13.5px;
    border: 1px solid transparent;
    box-shadow: var(--shadow-layer-1);
}

.alert-paper.info { background: var(--info-bg); border-color: var(--info-border); color: #0369a1; }
.alert-paper.success { background: var(--success-bg); border-color: var(--success-border); color: #047857; }
.alert-paper.warning { background: var(--warning-bg); border-color: var(--warning-border); color: #b45309; }
.alert-paper.danger { background: var(--danger-bg); border-color: var(--danger-border); color: #b91c1c; }

/* Print Styles */
@media print {
    body { background: #fff; }
    .sidebar, .top-bar, .ai-assistant-widget, .btn-paper, .top-actions { display: none !important; }
    .content-body { padding: 0; margin: 0; max-width: 100%; }
    .paper-card { box-shadow: none; border: 1px solid #ddd; page-break-inside: avoid; }
}