/**
 * Globull Limited - Enterprise Responsive Design System
 * Mobile-first, cross-platform, accessible CSS framework
 * 
 * Breakpoints:
 * - xs: <576px (small phones)
 * - sm: 576px+ (phones landscape)
 * - md: 768px+ (tablets)
 * - lg: 992px+ (small desktops)
 * - xl: 1200px+ (large desktops)
 * - xxl: 1400px+ (extra large screens)
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
    /* Brand Colors - Based on Globull Logo */
    --color-primary-50: #e6f0ff;
    --color-primary-100: #cce0ff;
    --color-primary-200: #99c2ff;
    --color-primary-300: #66a3ff;
    --color-primary-400: #3385ff;
    --color-primary-500: #1e56a0; /* Logo primary blue */
    --color-primary-600: #1a4a8a;
    --color-primary-700: #153d73;
    --color-primary-800: #11315d;
    --color-primary-900: #0c2446;
    --color-primary-950: #081830;
    
    /* Secondary Colors */
    --color-secondary-50: #f8fafc;
    --color-secondary-100: #f1f5f9;
    --color-secondary-200: #e2e8f0;
    --color-secondary-300: #cbd5e1;
    --color-secondary-400: #94a3b8;
    --color-secondary-500: #64748b;
    --color-secondary-600: #475569;
    --color-secondary-700: #334155;
    --color-secondary-800: #1e293b;
    --color-secondary-900: #0f172a;
    --color-secondary-950: #020617;
    
    /* Accent Colors */
    --color-accent-blue: #3b82f6;
    --color-accent-purple: #8b5cf6;
    --color-accent-green: #22c55e;
    --color-accent-orange: #f97316;
    --color-accent-red: #ef4444;
    
    /* Semantic Colors */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Typography */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'Fira Code', 'Monaco', 'Consolas', monospace;
    
    /* Responsive Font Sizes - Using clamp() */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.3vw, 0.9375rem);
    --text-base: clamp(1rem, 0.9rem + 0.4vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.3rem + 0.8vw, 2rem);
    --text-3xl: clamp(1.875rem, 1.5rem + 1.2vw, 2.5rem);
    --text-4xl: clamp(2.25rem, 1.8rem + 1.8vw, 3rem);
    --text-5xl: clamp(3rem, 2rem + 2.5vw, 4rem);
    --text-6xl: clamp(3.75rem, 2.5rem + 3vw, 5rem);
    
    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Spacing Scale */
    --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;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.125rem;
    --radius-default: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Transitions */
    --transition-fast: 150ms;
    --transition-normal: 300ms;
    --transition-slow: 500ms;
    --easing-default: cubic-bezier(0.4, 0, 0.2, 1);
    --easing-in: cubic-bezier(0.4, 0, 1, 1);
    --easing-out: cubic-bezier(0, 0, 0.2, 1);
    --easing-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* Container Widths */
    --container-sm: 540px;
    --container-md: 720px;
    --container-lg: 960px;
    --container-xl: 1140px;
    --container-xxl: 1320px;
    
    /* Touch Target Size (WCAG) */
    --touch-target-min: 44px;
}

/* Dark Mode Variables */
[data-theme="dark"],
.dark {
    --bg-primary: var(--color-secondary-900);
    --bg-secondary: var(--color-secondary-800);
    --bg-tertiary: var(--color-secondary-700);
    --text-primary: var(--color-secondary-50);
    --text-secondary: var(--color-secondary-300);
    --text-tertiary: var(--color-secondary-400);
    --border-color: var(--color-secondary-700);
}

/* Light Mode Variables */
:root,
[data-theme="light"],
.light {
    --bg-primary: white;
    --bg-secondary: var(--color-secondary-50);
    --bg-tertiary: var(--color-secondary-100);
    --text-primary: var(--color-secondary-900);
    --text-secondary: var(--color-secondary-600);
    --text-tertiary: var(--color-secondary-500);
    --border-color: var(--color-secondary-200);
}

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

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Account for fixed header */
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Prevent horizontal overflow */
html, body {
    max-width: 100vw;
    overflow-x: hidden;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, .h1 { font-size: var(--text-5xl); line-height: var(--leading-tight); font-weight: 800; }
h2, .h2 { font-size: var(--text-4xl); line-height: var(--leading-tight); font-weight: 700; }
h3, .h3 { font-size: var(--text-3xl); line-height: var(--leading-snug); font-weight: 700; }
h4, .h4 { font-size: var(--text-2xl); line-height: var(--leading-snug); font-weight: 600; }
h5, .h5 { font-size: var(--text-xl); line-height: var(--leading-normal); font-weight: 600; }
h6, .h6 { font-size: var(--text-lg); line-height: var(--leading-normal); font-weight: 600; }

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

.lead {
    font-size: var(--text-xl);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

small, .text-small {
    font-size: var(--text-sm);
}

/* ============================================
   LINKS & BUTTONS
   ============================================ */
a {
    color: var(--color-primary-500);
    text-decoration: none;
    transition: color var(--transition-fast) var(--easing-default);
}

a:hover {
    color: var(--color-primary-600);
}

a:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Touch-friendly buttons */
button, 
.btn,
[type="button"],
[type="submit"],
[type="reset"] {
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
    font-family: inherit;
    font-size: var(--text-base);
    cursor: pointer;
    border: none;
    background: none;
    touch-action: manipulation;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--easing-default);
    text-align: center;
    white-space: nowrap;
    user-select: none;
}

.btn-primary {
    background: var(--color-primary-500);
    color: white;
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-primary-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
    background: var(--color-primary-700);
}

.btn-secondary {
    background: var(--color-secondary-100);
    color: var(--color-secondary-700);
}

.dark .btn-secondary {
    background: var(--color-secondary-700);
    color: var(--color-secondary-200);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary-500);
    color: var(--color-primary-500);
}

.btn-outline:hover {
    background: var(--color-primary-500);
    color: white;
}

/* Button sizes */
.btn-sm {
    min-height: 36px;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.btn-lg {
    min-height: 52px;
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

/* ============================================
   RESPONSIVE IMAGES & MEDIA
   ============================================ */
img, 
picture, 
video, 
canvas, 
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Lazy loading placeholder */
img[data-src] {
    opacity: 0;
    transition: opacity var(--transition-normal) var(--easing-default);
}

img[data-src].loaded,
img:not([data-src]) {
    opacity: 1;
}

/* Responsive video container */
.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.video-container iframe,
.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* Srcset helper for responsive images */
.img-responsive {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.img-cover {
    object-fit: cover;
}

.img-contain {
    object-fit: contain;
}

/* ============================================
   LAYOUT CONTAINERS
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-xxl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

@media (min-width: 576px) {
    .container {
        padding-left: var(--space-6);
        padding-right: var(--space-6);
    }
}

@media (min-width: 768px) {
    .container {
        padding-left: var(--space-8);
        padding-right: var(--space-8);
    }
}

.container-fluid {
    width: 100%;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

.container-narrow {
    max-width: var(--container-md);
}

.container-wide {
    max-width: 100%;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

/* ============================================
   GRID SYSTEM
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-6);
}

/* Auto-fit responsive grid */
.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

/* Responsive grid variations */
.grid-1 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 576px) {
    .sm\:grid-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
    .md\:grid-2 { grid-template-columns: repeat(2, 1fr); }
    .md\:grid-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 992px) {
    .lg\:grid-2 { grid-template-columns: repeat(2, 1fr); }
    .lg\:grid-3 { grid-template-columns: repeat(3, 1fr); }
    .lg\:grid-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1200px) {
    .xl\:grid-4 { grid-template-columns: repeat(4, 1fr); }
    .xl\:grid-5 { grid-template-columns: repeat(5, 1fr); }
    .xl\:grid-6 { grid-template-columns: repeat(6, 1fr); }
}

/* Flexbox utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ============================================
   NAVIGATION
   ============================================ */
.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal) var(--easing-default);
}

.dark .nav-header {
    background: rgba(15, 23, 42, 0.95);
}

.nav-header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 var(--space-4);
}

@media (min-width: 992px) {
    .nav-container {
        height: 80px;
        padding: 0 var(--space-8);
    }
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.nav-logo img {
    height: 40px;
    width: auto;
}

@media (min-width: 992px) {
    .nav-logo img {
        height: 48px;
    }
}

.nav-logo-text {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
}

/* Desktop Navigation */
.nav-desktop {
    display: none;
    align-items: center;
    gap: var(--space-8);
}

@media (min-width: 992px) {
    .nav-desktop {
        display: flex;
    }
}

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-2) 0;
    transition: color var(--transition-fast) var(--easing-default);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary-500);
    transition: width var(--transition-fast) var(--easing-default);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary-500);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Mobile Menu Button */
.nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-fast) var(--easing-default);
}

@media (min-width: 992px) {
    .nav-toggle {
        display: none;
    }
}

.nav-toggle:hover {
    background: var(--bg-tertiary);
}

/* Mobile hamburger animation */
.hamburger {
    width: 24px;
    height: 18px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background: currentColor;
    border-radius: 2px;
    transition: all var(--transition-fast) var(--easing-default);
}

.nav-toggle.active .hamburger span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .hamburger span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.nav-toggle.active .hamburger span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Slide-in Drawer */
/* Drawer styles defined in main layout inline styles */
/* Using right-slide with .active class */

.mobile-drawer.open,
.mobile-drawer.active {
    right: 0;
}

.mobile-drawer-backdrop,
.mobile-drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 45;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal) var(--easing-default);
}

.mobile-drawer-backdrop.open,
.mobile-drawer-backdrop.active,
.mobile-drawer-overlay.open,
.mobile-drawer-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-color);
}

.mobile-drawer-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
}

.mobile-drawer-nav {
    flex: 1;
    padding: var(--space-4);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    padding: var(--space-4);
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--easing-default);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--color-primary-50);
    color: var(--color-primary-500);
}

.dark .mobile-nav-link:hover,
.dark .mobile-nav-link.active {
    background: rgba(30, 86, 160, 0.15);
}

.mobile-drawer-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--border-color);
}

/* Prevent body scroll when drawer is open */
body.drawer-open {
    overflow: hidden;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-normal) var(--easing-default);
}

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

.card-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

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

@media (max-width: 575px) {
    .card-body {
        padding: var(--space-4);
    }
}

.card-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    min-height: var(--touch-target-min);
    padding: var(--space-3) var(--space-4);
    font-family: inherit;
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--easing-default);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(30, 86, 160, 0.15);
}

.form-control::placeholder {
    color: var(--text-tertiary);
}

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

/* Form validation states */
.form-control.is-valid {
    border-color: var(--color-success);
}

.form-control.is-invalid {
    border-color: var(--color-error);
}

.form-error {
    display: block;
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-error);
}

/* ============================================
   TABLES (Responsive)
   ============================================ */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    min-width: 600px;
    border-collapse: collapse;
}

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

.table th {
    font-weight: 600;
    background: var(--bg-secondary);
}

/* Stacked table for mobile */
@media (max-width: 767px) {
    .table-stack {
        min-width: unset;
    }
    
    .table-stack thead {
        display: none;
    }
    
    .table-stack tbody tr {
        display: block;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        margin-bottom: var(--space-4);
        padding: var(--space-4);
    }
    
    .table-stack td {
        display: flex;
        justify-content: space-between;
        padding: var(--space-2) 0;
        border: none;
    }
    
    .table-stack td::before {
        content: attr(data-label);
        font-weight: 600;
        margin-right: var(--space-4);
    }
}

/* ============================================
   MODALS
   ============================================ */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal-backdrop);
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal) var(--easing-default);
}

.modal-backdrop.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    z-index: var(--z-modal);
    width: calc(100% - var(--space-8));
    max-width: 500px;
    max-height: calc(100vh - var(--space-8));
    overflow-y: auto;
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal) var(--easing-default);
}

.modal.open {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

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

.modal-title {
    font-size: var(--text-xl);
    font-weight: 600;
}

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

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-4);
    padding: var(--space-6);
    border-top: 1px solid var(--border-color);
}

/* ============================================
   HERO SECTIONS
   ============================================ */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 60vh;
    padding: var(--space-16) 0;
    overflow: hidden;
}

@media (min-width: 768px) {
    .hero {
        min-height: 70vh;
        padding: var(--space-20) 0;
    }
}

@media (min-width: 992px) {
    .hero {
        min-height: 80vh;
        padding: var(--space-24) 0;
    }
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--text-5xl);
    }
}

@media (min-width: 992px) {
    .hero-title {
        font-size: var(--text-6xl);
    }
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: var(--text-xl);
    }
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-secondary-900);
    color: white;
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    gap: var(--space-8);
}

@media (min-width: 576px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-brand {
    grid-column: 1 / -1;
}

@media (min-width: 992px) {
    .footer-brand {
        grid-column: 1 / 2;
    }
}

.footer-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-6);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    color: var(--color-secondary-400);
    transition: color var(--transition-fast) var(--easing-default);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--color-secondary-800);
    margin-top: var(--space-12);
    padding-top: var(--space-8);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Safe Area Insets (for notched devices like iPhone X+) */
.safe-area-inset {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

.safe-area-inset-top {
    padding-top: env(safe-area-inset-top);
}

.safe-area-inset-bottom {
    padding-bottom: env(safe-area-inset-bottom);
}

.safe-area-inset-all {
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* Display */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

@media (max-width: 575px) {
    .d-xs-none { display: none !important; }
    .d-xs-block { display: block !important; }
}

@media (min-width: 576px) {
    .d-sm-none { display: none !important; }
    .d-sm-block { display: block !important; }
    .d-sm-flex { display: flex !important; }
}

@media (min-width: 768px) {
    .d-md-none { display: none !important; }
    .d-md-block { display: block !important; }
    .d-md-flex { display: flex !important; }
}

@media (min-width: 992px) {
    .d-lg-none { display: none !important; }
    .d-lg-block { display: block !important; }
    .d-lg-flex { display: flex !important; }
}

@media (min-width: 1200px) {
    .d-xl-none { display: none !important; }
    .d-xl-block { display: block !important; }
    .d-xl-flex { display: flex !important; }
}

/* Text alignment */
.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

@media (min-width: 768px) {
    .md\:text-left { text-align: left !important; }
    .md\:text-center { text-align: center !important; }
}

@media (min-width: 992px) {
    .lg\:text-left { text-align: left !important; }
}

/* Spacing */
.m-0 { margin: 0 !important; }
.m-auto { margin: auto !important; }
.mx-auto { margin-left: auto !important; margin-right: auto !important; }
.my-4 { margin-top: var(--space-4) !important; margin-bottom: var(--space-4) !important; }
.my-8 { margin-top: var(--space-8) !important; margin-bottom: var(--space-8) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-6 { margin-bottom: var(--space-6) !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-8 { margin-top: var(--space-8) !important; }

.p-0 { padding: 0 !important; }
.p-4 { padding: var(--space-4) !important; }
.p-6 { padding: var(--space-6) !important; }
.p-8 { padding: var(--space-8) !important; }
.px-4 { padding-left: var(--space-4) !important; padding-right: var(--space-4) !important; }
.py-4 { padding-top: var(--space-4) !important; padding-bottom: var(--space-4) !important; }
.py-8 { padding-top: var(--space-8) !important; padding-bottom: var(--space-8) !important; }
.py-12 { padding-top: var(--space-12) !important; padding-bottom: var(--space-12) !important; }
.py-16 { padding-top: var(--space-16) !important; padding-bottom: var(--space-16) !important; }
.py-20 { padding-top: var(--space-20) !important; padding-bottom: var(--space-20) !important; }

/* Reduce spacing on mobile */
@media (max-width: 767px) {
    .py-16 { padding-top: var(--space-10) !important; padding-bottom: var(--space-10) !important; }
    .py-20 { padding-top: var(--space-12) !important; padding-bottom: var(--space-12) !important; }
    .py-24 { padding-top: var(--space-16) !important; padding-bottom: var(--space-16) !important; }
}

/* Colors */
.text-primary { color: var(--color-primary-500) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-white { color: white !important; }
.text-muted { color: var(--text-tertiary) !important; }

.bg-primary { background-color: var(--color-primary-500) !important; }
.bg-white { background-color: white !important; }
.bg-light { background-color: var(--bg-secondary) !important; }
.bg-dark { background-color: var(--color-secondary-900) !important; }

/* Border radius */
.rounded { border-radius: var(--radius-default) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-2xl { border-radius: var(--radius-2xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* Width utilities */
.w-full { width: 100% !important; }
.max-w-none { max-width: none !important; }
.max-w-sm { max-width: var(--container-sm) !important; }
.max-w-md { max-width: var(--container-md) !important; }
.max-w-lg { max-width: var(--container-lg) !important; }
.max-w-xl { max-width: var(--container-xl) !important; }

/* Shadow utilities */
.shadow { box-shadow: var(--shadow) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }
.shadow-none { box-shadow: none !important; }

/* Overflow */
.overflow-hidden { overflow: hidden !important; }
.overflow-x-auto { overflow-x: auto !important; }
.overflow-y-auto { overflow-y: auto !important; }

/* Position */
.relative { position: relative !important; }
.absolute { position: absolute !important; }
.fixed { position: fixed !important; }
.sticky { position: sticky !important; }

/* Visibility */
.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }
.opacity-0 { opacity: 0 !important; }
.opacity-50 { opacity: 0.5 !important; }
.opacity-100 { opacity: 1 !important; }

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Focus visible (keyboard navigation) */
:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Skip to content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    padding: var(--space-3) var(--space-6);
    background: var(--color-primary-500);
    color: white;
    font-weight: 600;
    z-index: calc(var(--z-tooltip) + 1);
    transition: top var(--transition-fast) var(--easing-default);
}

.skip-link:focus {
    top: 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: currentColor;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* ============================================
   ANIMATIONS (with reduced motion support)
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes fadeInDown {
    from { 
        opacity: 0; 
        transform: translateY(-20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes slideInLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-fade-in { animation: fadeIn var(--transition-normal) var(--easing-default) forwards; }
.animate-fade-in-up { animation: fadeInUp var(--transition-normal) var(--easing-out) forwards; }
.animate-fade-in-down { animation: fadeInDown var(--transition-normal) var(--easing-out) forwards; }
.animate-slide-in-left { animation: slideInLeft var(--transition-normal) var(--easing-out) forwards; }
.animate-slide-in-right { animation: slideInRight var(--transition-normal) var(--easing-out) forwards; }
.animate-pulse { animation: pulse 2s var(--easing-in-out) infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* Disable animations on mobile for performance */
@media (max-width: 767px) and (prefers-reduced-motion: no-preference) {
    .animate-fade-in-up,
    .animate-fade-in-down,
    .animate-slide-in-left,
    .animate-slide-in-right {
        animation-duration: 0.2s;
    }
}

/* ============================================
   LOADING STATES
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-default);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--bg-tertiary);
    border-top-color: var(--color-primary-500);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    *,
    *::before,
    *::after {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
    }
    
    .nav-header,
    .mobile-drawer,
    .back-to-top,
    .btn {
        display: none !important;
    }
    
    body {
        padding-top: 0 !important;
    }
}