/* Enhanced Design CSS - Award-winning patterns implementation */

/* ===== ENHANCED VISUAL HIERARCHY ===== */
:root {
    /* Enhanced Typography Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Enhanced Spacing Scale */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Enhanced Color System */
    --color-primary: #FF9933;
    --color-primary-hover: #E6851F;
    --color-secondary: #8B4513;
    --color-accent: #FFD700;
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;
    
    /* Grays */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border radius */
    --radius-sm: 0.125rem;
    --radius-base: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Layout widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
}

/* ===== ENHANCED TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-4);
}

h1 { 
    font-size: var(--text-5xl); 
    font-weight: 700;
    margin-bottom: var(--spacing-6);
}

h2 { 
    font-size: var(--text-4xl); 
    margin-bottom: var(--spacing-5);
}

h3 { 
    font-size: var(--text-3xl); 
    margin-bottom: var(--spacing-4);
}

h4 { 
    font-size: var(--text-2xl); 
    margin-bottom: var(--spacing-3);
}

h5 { 
    font-size: var(--text-xl); 
    margin-bottom: var(--spacing-3);
}

h6 { 
    font-size: var(--text-lg); 
    margin-bottom: var(--spacing-2);
}

/* ===== F-PATTERN LAYOUT SYSTEM ===== */
.f-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

.f-layout-header {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.f-layout-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-10);
    align-items: start;
}

.f-layout-main {
    /* Main content follows F-pattern */
}

.f-layout-sidebar {
    position: sticky;
    top: var(--spacing-8);
}

/* ===== ZIG-ZAG LAYOUT ===== */
.zigzag-layout {
    display: grid;
    gap: var(--spacing-16);
}

.zigzag-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-10);
    align-items: center;
    padding: var(--spacing-8) 0;
}

.zigzag-item:nth-child(even) .zigzag-content {
    order: 2;
}

.zigzag-item:nth-child(even) .zigzag-image {
    order: 1;
}

/* ===== ENHANCED GRID SYSTEMS ===== */
.grid-2 { 
    display: grid; 
    grid-template-columns: repeat(2, 1fr); 
    gap: var(--spacing-6); 
}

.grid-3 { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: var(--spacing-6); 
}

.grid-4 { 
    display: grid; 
    grid-template-columns: repeat(4, 1fr); 
    gap: var(--spacing-6); 
}

.grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

/* ===== ENHANCED CARDS ===== */
.enhanced-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-8);
    transition: all 300ms ease;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.enhanced-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--color-primary);
}

.enhanced-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity 300ms ease;
}

.enhanced-card:hover::before {
    opacity: 1;
}

/* ===== ENHANCED BUTTONS ===== */
.btn-enhanced {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--text-base);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 200ms ease;
    position: relative;
    overflow: hidden;
}

.btn-primary-enhanced {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary-enhanced {
    background: white;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
}

.btn-secondary-enhanced:hover {
    background: var(--color-secondary);
    color: white;
}

/* ===== SEARCH BAR ENHANCEMENT ===== */
.enhanced-search {
    position: relative;
    max-width: 600px;
    margin: 0 auto var(--spacing-8);
}

.enhanced-search input {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-6) var(--spacing-4) var(--spacing-12);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-full);
    font-size: var(--text-lg);
    transition: all 300ms ease;
    background: white;
}

.enhanced-search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 153, 51, 0.1);
}

.enhanced-search .search-icon {
    position: absolute;
    left: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: var(--text-xl);
}

.enhanced-search .search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    max-height: 300px;
    overflow-y: auto;
    display: none;
}

.enhanced-search .suggestion-item {
    padding: var(--spacing-3) var(--spacing-4);
    cursor: pointer;
    border-bottom: 1px solid var(--gray-100);
}

.enhanced-search .suggestion-item:hover {
    background: var(--gray-50);
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 600ms ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 600ms ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 600ms ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.8);
    transition: all 600ms ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ===== ENHANCED NAVIGATION ===== */
.enhanced-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: all 300ms ease;
}

.enhanced-nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width 100ms ease;
}

/* ===== BREADCRUMBS ===== */
.enhanced-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
    font-size: var(--text-sm);
    color: var(--gray-600);
}

.enhanced-breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 200ms ease;
}

.enhanced-breadcrumb a:hover {
    color: var(--color-primary-hover);
}

.breadcrumb-separator {
    color: var(--gray-400);
}

/* ===== ENHANCED HERO SECTIONS ===== */
.hero-enhanced {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    text-align: center;
    overflow: hidden;
}

.hero-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-enhanced-content {
    position: relative;
    z-index: 2;
    max-width: var(--container-md);
    padding: var(--spacing-8);
}

/* ===== INTERACTIVE ELEMENTS ===== */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: white;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-base);
    font-size: var(--text-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 200ms ease;
    z-index: 1000;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ===== RESPONSIVE BREAKPOINTS ===== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .f-layout-content { grid-template-columns: 1fr; }
    .zigzag-item { grid-template-columns: 1fr; }
    .zigzag-item:nth-child(even) .zigzag-content { order: 1; }
    .zigzag-item:nth-child(even) .zigzag-image { order: 2; }
}

@media (max-width: 768px) {
    .grid-3, .grid-2 { grid-template-columns: 1fr; }
    h1 { font-size: var(--text-4xl); }
    h2 { font-size: var(--text-3xl); }
    h3 { font-size: var(--text-2xl); }
}

@media (max-width: 640px) {
    :root {
        --spacing-16: 2rem;
        --spacing-12: 2rem;
        --spacing-10: 1.5rem;
    }
    
    .enhanced-card {
        padding: var(--spacing-6);
    }
    
    .hero-enhanced {
        min-height: 60vh;
    }
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */
.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;
}

.focus-outline:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

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

/* ===== ENHANCED SPACING UTILITIES ===== */
.p-1 { padding: var(--spacing-1); }
.p-2 { padding: var(--spacing-2); }
.p-3 { padding: var(--spacing-3); }
.p-4 { padding: var(--spacing-4); }
.p-5 { padding: var(--spacing-5); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

.m-1 { margin: var(--spacing-1); }
.m-2 { margin: var(--spacing-2); }
.m-3 { margin: var(--spacing-3); }
.m-4 { margin: var(--spacing-4); }
.m-5 { margin: var(--spacing-5); }
.m-6 { margin: var(--spacing-6); }
.m-8 { margin: var(--spacing-8); }

.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

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