/* ============================================
   PORTAL - Editorial Design System
   Inspired by Conscious Design Aesthetic
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors - Minimal Monochromatic */
    --color-black: #1D1D1D;
    --color-white: #FFFFFF;
    --color-gray-50: #F5F5F5;
    --color-gray-100: #EEEEEE;
    --color-gray-200: #E0E0E0;
    --color-gray-300: #BDBDBD;
    --color-gray-400: #9E9E9E;
    --color-gray-500: #777777;
    --color-gray-600: #616161;
    --color-gray-700: #424242;
    --color-gray-800: #333333;
    --color-gray-900: #212121;
    
    /* Tier Accents - Subtle */
    --accent-one: #2563EB;
    --accent-craft: #B8860B;
    --accent-legacy: #1E3A5F;
    
    /* Typography */
    --font-primary: 'Inter Tight', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing Scale */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    
    /* Container */
    --container-max: 1400px;
    --container-narrow: 900px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
}

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

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-black);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

.text-display {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 600;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.text-headline {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.text-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.text-subtitle {
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.4;
}

.text-body {
    font-size: 1.125rem;
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-gray-600);
}

.text-small {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
}

.text-caption {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-lg) var(--space-2xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-logo-icon {
    width: 24px;
    height: 28px;
    position: relative;
}

.nav-logo-icon::before,
.nav-logo-icon::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 24px;
    background: var(--color-black);
    bottom: 0;
}

.nav-logo-icon::before { left: 2px; }
.nav-logo-icon::after { right: 2px; }

.nav-logo-arch {
    position: absolute;
    top: 0;
    left: 2px;
    right: 2px;
    height: 8px;
    border-top: 2px solid var(--color-black);
    border-radius: 50% 50% 0 0;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
    list-style: none;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-black);
    transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-black);
}

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

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-2xl);
}

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

.section {
    padding: var(--space-5xl) 0;
}

.section-sm {
    padding: var(--space-4xl) 0;
}

.section-lg {
    padding: var(--space-5xl) 0;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: calc(var(--space-5xl) + 60px) var(--space-2xl) var(--space-4xl);
    position: relative;
}

.hero-content {
    max-width: 900px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-gray-50);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-600);
    margin-bottom: var(--space-xl);
}

.hero h1 {
    margin-bottom: var(--space-lg);
}

.hero p {
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 100px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.btn-primary:hover {
    background: var(--color-gray-800);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--color-black);
    border: 1.5px solid var(--color-gray-300);
}

.btn-secondary:hover {
    border-color: var(--color-black);
    background: var(--color-gray-50);
}

.btn-outline {
    background: transparent;
    color: var(--color-black);
    border: 1.5px solid var(--color-gray-200);
}

.btn-outline:hover {
    border-color: var(--color-black);
}

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

.btn-white:hover {
    background: var(--color-gray-100);
}

.btn-lg {
    padding: var(--space-md) var(--space-2xl);
    font-size: 1rem;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--color-white);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-gray-200);
}

.card-image {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

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

.card-tag {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-500);
    margin-bottom: var(--space-sm);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.01em;
}

.card-description {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-black);
    transition: gap var(--transition-fast);
}

.card:hover .card-link {
    gap: var(--space-sm);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

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

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

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

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-3,
    .grid-2,
    .grid-4 { grid-template-columns: 1fr; }
    
    .nav { padding: var(--space-md) var(--space-lg); }
    .nav-links { display: none; }
    .container { padding: 0 var(--space-lg); }
    .section { padding: var(--space-3xl) 0; }
}

/* ============================================
   SECTION HEADER
   ============================================ */

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gray-500);
    margin-bottom: var(--space-md);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    color: var(--color-gray-600);
}

/* ============================================
   DARK SECTION
   ============================================ */

.section-dark {
    background: var(--color-black);
    color: var(--color-white);
}

.section-dark .section-tag {
    color: var(--color-gray-400);
}

.section-dark .section-title {
    color: var(--color-white);
}

.section-dark .section-subtitle {
    color: var(--color-gray-400);
}

/* ============================================
   TIER STYLES
   ============================================ */

.tier-indicator {
    display: flex;
    gap: var(--space-xs);
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.tier-line {
    width: 32px;
    height: 2px;
    background: var(--color-gray-200);
    border-radius: 1px;
}

.tier-one .tier-line:first-child { background: var(--accent-one); }
.tier-craft .tier-line:nth-child(-n+2) { background: var(--accent-craft); }
.tier-legacy .tier-line { background: var(--accent-legacy); }

.tier-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.tier-one .tier-label { color: var(--accent-one); }
.tier-craft .tier-label { color: var(--accent-craft); }
.tier-legacy .tier-label { color: var(--accent-legacy); }

/* ============================================
   BREADCRUMB
   ============================================ */

.breadcrumb {
    padding: calc(80px + var(--space-xl)) 0 var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.breadcrumb a {
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

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

.breadcrumb-separator {
    opacity: 0.4;
}

.breadcrumb-current {
    color: var(--color-black);
    font-weight: 500;
}

/* ============================================
   PRODUCT CARD VARIANT
   ============================================ */

.product-card {
    display: block;
    text-decoration: none;
    color: inherit;
    background: var(--color-white);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-card-image {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-card-image {
    transform: scale(1.03);
}

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

.product-card-category {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xs);
}

.tier-one .product-card-category { color: var(--accent-one); }
.tier-craft .product-card-category { color: var(--accent-craft); }
.tier-legacy .product-card-category { color: var(--accent-legacy); }

.product-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    letter-spacing: -0.01em;
}

.product-card-desc {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   FEATURE ITEM
   ============================================ */

.feature-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-white);
    border-radius: 16px;
    border: 1px solid var(--color-gray-100);
}

.feature-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--color-gray-50);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-gray-700);
}

.feature-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.feature-content p {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    line-height: 1.5;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    padding: var(--space-4xl) 0;
    border-top: 1px solid var(--color-gray-100);
    text-align: center;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    letter-spacing: -0.02em;
}

.footer-tagline {
    font-size: 1rem;
    color: var(--color-gray-500);
    margin-bottom: var(--space-xl);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    list-style: none;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-black);
}

.footer-copy {
    font-size: 0.875rem;
    color: var(--color-gray-400);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.animate-fade-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Stagger delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

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

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.hidden { display: none; }
.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;
}