/**
 * Luma Aligner Dental Lab System - Design System
 * Theme: Light mint (#E0F0F0) canvas · black text · Luma blue (#324C97) accent
 *
 * NOTE on the gray scale: pages use --color-gray-100…500 as FOREGROUND tiers
 * (100 = strongest text, 500 = faint hint) and --color-gray-700…900 as SURFACES.
 * The values below keep that contract for a light canvas.
 */

/* ============================================
   CSS Variables / Design Tokens
   ============================================ */
:root {
    /* Canvas & surfaces */
    --color-bg: #E0F0F0;
    --color-bg-deep: #d2e7e7;
    --color-surface: #ffffff;
    --color-surface-muted: #f3f9f9;
    --color-text: #000000;
    --color-text-muted: #2b3636;
    --color-line: rgba(10, 40, 40, 0.10);
    --color-line-strong: rgba(10, 40, 40, 0.18);

    /* Primary - Luma brand blue (from logo) #324C97 */
    --color-primary-900: #18244d;
    --color-primary-800: #1f2f66;
    --color-primary-700: #283d80;
    --color-primary-600: #324C97;
    --color-primary-500: #324C97;
    --color-primary-400: #4a64ad;
    --color-primary-300: #283d80;
    --color-primary-200: #b9c6e8;
    --color-primary-100: #dce3f4;
    --color-primary-50: #eef1fa;

    /* Accent - used for links, active states, focus (dark enough to read on mint) */
    --color-accent-600: #1f2f66;
    --color-accent-500: #324C97;
    --color-accent-400: #283d80;
    --color-accent-300: #1f2f66;
    --color-accent-200: #4a64ad;

    /* Secondary */
    --color-secondary-600: #1f2f66;
    --color-secondary-500: #283d80;
    --color-secondary-400: #324C97;
    --color-secondary-300: #1f2f66;

    /* Foreground tiers (100 strongest) + surfaces (700-900) — see note above */
    --color-gray-50: #000000;
    --color-gray-100: #000000;
    --color-gray-200: #0b1515;
    --color-gray-300: #162222;
    --color-gray-400: #2b3636;
    --color-gray-500: #435050;
    --color-gray-600: #8a9a9a;
    --color-gray-700: #e6f1f1;
    --color-gray-800: #f3f9f9;
    --color-gray-900: #ffffff;

    /* Semantic Colors */
    --color-success: #146c43;
    --color-warning: #b45309;
    --color-danger: #c42b2b;
    --color-info: #324C97;

    /* Surfaces (kept under the old "glass" names used across pages) */
    --glass-bg: rgba(255, 255, 255, 0.78);
    --glass-bg-light: rgba(255, 255, 255, 0.95);
    --glass-bg-dark: #ffffff;
    --glass-border: rgba(10, 40, 40, 0.10);
    --glass-blur: blur(16px);
    --glass-blur-light: blur(8px);

    /* Shadows — soft, cool-tinted */
    --shadow-sm: 0 1px 2px rgba(10, 40, 40, 0.06);
    --shadow-md: 0 1px 2px rgba(10, 40, 40, 0.05), 0 4px 12px -4px rgba(10, 40, 40, 0.10);
    --shadow-lg: 0 1px 2px rgba(10, 40, 40, 0.04), 0 12px 28px -12px rgba(10, 40, 40, 0.16);
    --shadow-xl: 0 2px 4px rgba(10, 40, 40, 0.04), 0 24px 48px -20px rgba(10, 40, 40, 0.22);
    --shadow-glow: 0 0 0 1px rgba(50, 76, 151, 0.06);
    --shadow-glow-accent: 0 6px 16px -8px rgba(50, 76, 151, 0.55);

    /* Typography */
    --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Montserrat', var(--font-sans);

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius: 0.625rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --radius-full: 9999px;

    /* Motion — strong custom curves (built-in CSS easings are too weak) */
    --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
    --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
    --ease-drawer: cubic-bezier(0.32, 0.72, 0, 1);

    /* Transitions */
    --transition-fast: 150ms var(--ease-out);
    --transition-normal: 220ms var(--ease-out);
    --transition-slow: 300ms var(--ease-out);

    color-scheme: light;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.light-mode {
    color: var(--color-text);
    background-color: var(--color-bg);
}

::selection {
    background: rgba(50, 76, 151, 0.18);
    color: #000;
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--space-4);
    color: var(--color-text);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--space-4);
}

a {
    color: var(--color-accent-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-300);
}

/* ============================================
   Layout Components
   ============================================ */

/* Container */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .lg\:grid-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .md\:grid-cols-1 {
        grid-template-columns: 1fr;
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.items-center {
    align-items: center;
}

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

.items-end {
    align-items: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-end {
    justify-content: flex-end;
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-6 {
    gap: var(--space-6);
}

/* ============================================
   Cards
   ============================================ */
.glass-card,
.card {
    background: var(--color-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    color: var(--color-text);
    transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.glass-card-dark {
    background: var(--color-surface-muted);
    border: 1px solid var(--glass-border);
    color: var(--color-text);
}

.glass-card-solid {
    background: var(--color-surface);
    color: var(--color-text);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.5;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition:
        transform 160ms var(--ease-out),
        background-color 200ms ease,
        border-color 200ms ease,
        box-shadow 200ms ease,
        color 200ms ease;
    text-decoration: none;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}

.btn:active:not(:disabled) {
    transform: scale(0.97);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

/* Solid fills carry white labels — the only place text is not black */
.btn-primary {
    background: var(--color-primary-600);
    color: #ffffff;
    box-shadow: var(--shadow-glow-accent);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-700);
    color: #ffffff;
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-line-strong);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-surface-muted);
    border-color: rgba(10, 40, 40, 0.28);
    color: var(--color-text);
}

.btn-danger {
    background: var(--color-danger);
    color: #ffffff;
}

.btn-danger:hover:not(:disabled) {
    background: #a82020;
    color: #ffffff;
}

.btn-success {
    background: var(--color-success);
    color: #ffffff;
}

.btn-success:hover:not(:disabled) {
    background: #0f5735;
    color: #ffffff;
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: 0.85rem;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1.05rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

/* ============================================
   Form Elements
   ============================================ */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 1px solid var(--color-line-strong);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary-600);
    background-color: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(50, 76, 151, 0.18);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: #5b6a6a;
    opacity: 1;
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled,
.form-input[readonly] {
    background-color: var(--color-surface-muted);
    color: var(--color-gray-400);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23162222' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-right: var(--space-10);
    cursor: pointer;
}

select.form-select,
select.form-input {
    color: var(--color-text);
    background-color: var(--color-surface);
}

.form-select option,
select.form-select option,
select.form-input option {
    background: #ffffff;
    color: #000000;
    padding: 8px;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
    padding: var(--space-2) 0;
}

.form-check-input {
    width: 20px;
    height: 20px;
    appearance: none;
    background: var(--color-surface);
    border: 2px solid rgba(10, 40, 40, 0.3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform 120ms var(--ease-out);
    flex-shrink: 0;
}

.form-check-input:active {
    transform: scale(0.92);
}

.form-check-input[type="radio"] {
    border-radius: 50%;
}

.form-check-input:checked {
    background: var(--color-primary-600);
    border-color: var(--color-primary-600);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

.form-check-input[type="radio"]:checked {
    background: var(--color-surface);
    background-image: none;
    border-color: var(--color-primary-600);
    box-shadow: inset 0 0 0 4px var(--color-primary-600);
}

.form-check-label {
    font-size: 0.95rem;
    color: var(--color-text);
    user-select: none;
}

/* ============================================
   Badges — tinted fill, near-black text
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-radius: var(--radius-full);
    white-space: nowrap;
    border: 1px solid transparent;
    background: #e3eded;
    color: #0b1515;
}

.badge-primary {
    background: #dce3f4;
    color: #18244d;
    border-color: #c3cfec;
}

.badge-secondary {
    background: #e3eded;
    color: #162222;
    border-color: #cddcdc;
}

.badge-success {
    background: #d6f0e1;
    color: #0b3d25;
    border-color: #b5e0c8;
}

.badge-warning {
    background: #fdefc8;
    color: #4d2f00;
    border-color: #f6d98a;
}

.badge-danger {
    background: #fadcdc;
    color: #6b1111;
    border-color: #f2bcbc;
}

.badge-info {
    background: #dbe7f7;
    color: #14295c;
    border-color: #bfd2ee;
}

/* Pulsing badge for highly urgent */
.badge.pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(196, 43, 43, 0.35);
    }

    50% {
        box-shadow: 0 0 0 6px rgba(196, 43, 43, 0);
    }
}

/* ============================================
   Tables
   ============================================ */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    color: var(--color-text);
}

.table th,
.table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-line);
}

.table th {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-gray-300);
    background: var(--color-surface-muted);
    white-space: nowrap;
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background: rgba(50, 76, 151, 0.04);
}

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

/* ============================================
   Alerts & Messages
   ============================================ */
.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    border: 1px solid transparent;
    color: var(--color-text);
    transition: opacity 200ms ease, transform 200ms var(--ease-out);
}

.alert-success {
    background: #e3f5eb;
    border-color: #b5e0c8;
    color: #0b3d25;
}

.alert-warning {
    background: #fef5dc;
    border-color: #f6d98a;
    color: #4d2f00;
}

.alert-danger {
    background: #fde8e8;
    border-color: #f2bcbc;
    color: #6b1111;
}

.alert-info {
    background: #e6eef9;
    border-color: #bfd2ee;
    color: #14295c;
}

/* ============================================
   Navigation / Sidebar
   ============================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--color-line);
    padding: var(--space-6) var(--space-5);
    overflow-y: auto;
    z-index: 100;
    color: var(--color-text);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    padding: var(--space-2) var(--space-3) var(--space-5);
    border-bottom: 1px solid var(--color-line);
}

.sidebar-logo a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    color: var(--color-text);
}

.sidebar-logo-img {
    width: 72px;
    height: auto;
    display: block;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    min-width: 0;
}

.sidebar-brand-name {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--color-text);
}

.sidebar-brand-tag {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-gray-500);
}

.sidebar-logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-text);
}

.sidebar-nav {
    list-style: none;
}

.sidebar-nav-item {
    margin-bottom: 2px;
}

.sidebar-nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 10px var(--space-4);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-nav-link:hover {
    background: rgba(10, 40, 40, 0.05);
    color: var(--color-text);
}

.sidebar-nav-link.active {
    background: var(--color-primary-50);
    color: var(--color-text);
    font-weight: 600;
}

.sidebar-nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 3px;
    border-radius: 3px;
    background: var(--color-primary-600);
}

.sidebar-nav-link.active .sidebar-nav-icon {
    color: var(--color-primary-600);
    opacity: 1;
}

.sidebar-nav-icon {
    width: 18px;
    height: 18px;
    opacity: 0.75;
    flex-shrink: 0;
}

/* Main Content Area */
.main-content {
    margin-left: 280px;
    padding: var(--space-8);
    min-height: 100vh;
}

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 300ms var(--ease-drawer);
        background: #ffffff;
        box-shadow: var(--shadow-xl);
        padding-top: 72px; /* clear the fixed menu toggle */
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: var(--space-16) var(--space-4) var(--space-8);
    }
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-text);
}

.page-subtitle {
    color: var(--color-gray-400);
    font-size: 0.95rem;
    margin-top: var(--space-1);
    margin-bottom: 0;
}

/* ============================================
   Stats Cards
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    display: flex;
    flex-wrap: wrap; /* long values (e.g. 619,900.00 EGP) drop below the icon instead of clipping */
    align-items: flex-start;
    gap: var(--space-4);
    box-shadow: var(--shadow-md);
    color: var(--color-text);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #ffffff;
}

.stat-icon.revenue {
    background: var(--color-success);
}

.stat-icon.active {
    background: var(--color-primary-600);
}

.stat-icon.completed {
    background: var(--color-primary-800);
}

.stat-icon.pending {
    background: var(--color-warning);
}

.stat-content {
    flex: 1 1 auto;
    min-width: 0;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-gray-400);
    margin-bottom: var(--space-1);
}

.stat-value {
    font-size: clamp(1.25rem, 0.95rem + 0.6vw, 1.75rem);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.01em;
    overflow-wrap: anywhere;
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
}

/* ============================================
   Modal — stays centered, enters from 0.96 + fade
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(8, 28, 28, 0.38);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 200ms ease, visibility 0s linear 200ms;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
    transition: opacity 200ms ease, visibility 0s;
}

.modal {
    background: var(--color-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    color: var(--color-text);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.96) translateY(8px);
    transition: transform 240ms var(--ease-out);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-line);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0;
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-gray-400);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast), transform 120ms var(--ease-out);
}

.modal-close:hover {
    background: rgba(10, 40, 40, 0.06);
    color: var(--color-text);
}

.modal-close:active {
    transform: scale(0.94);
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--color-line);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
}

/* ============================================
   File Upload Zone
   ============================================ */
.upload-zone {
    border: 2px dashed rgba(10, 40, 40, 0.22);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    text-align: center;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
    cursor: pointer;
    background: rgba(255, 255, 255, 0.6);
    color: var(--color-text);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--color-primary-600);
    background: var(--color-primary-50);
}

.upload-zone-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    opacity: 0.7;
}

.upload-zone-text {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.upload-zone-hint {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

/* ============================================
   Progress Bar
   ============================================ */
.progress {
    height: 8px;
    background: rgba(10, 40, 40, 0.08);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--color-primary-600);
    border-radius: var(--radius-full);
    transition: width 300ms var(--ease-out);
}

/* ============================================
   Utilities
   ============================================ */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: var(--color-gray-400);
}

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

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

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

.mt-2 {
    margin-top: var(--space-2);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.p-4 {
    padding: var(--space-4);
}

.p-6 {
    padding: var(--space-6);
}

.hidden {
    display: none !important;
}

.block {
    display: block;
}

.w-full {
    width: 100%;
}

/* ============================================
   Animations — short, ease-out, never from nothing
   ============================================ */
.fade-in {
    animation: fadeIn 320ms var(--ease-out) both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 320ms var(--ease-out) both;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-8px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Stagger animations (short gaps — decorative, never blocking) */
.stagger-1 {
    animation-delay: 40ms;
}

.stagger-2 {
    animation-delay: 80ms;
}

.stagger-3 {
    animation-delay: 120ms;
}

.stagger-4 {
    animation-delay: 160ms;
}

/* Loading Spinner */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(10, 40, 40, 0.12);
    border-top-color: var(--color-primary-600);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(10, 40, 40, 0.18);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(10, 40, 40, 0.3);
}