/* ==== DESIGN SYSTEM - PREMIUM AESTHETIC ==== */
:root {
    /* Colors - Deep Obsidian & Amber */
    --bg-base: #0a0a0b;
    --bg-surface: #111114;
    --bg-elevated: rgba(255, 255, 255, 0.03);

    --text-primary: #f9f9f9;
    --text-secondary: #a1a1aa;
    /* Zinc 400 */
    --text-tertiary: #71717a;
    /* Zinc 500 */

    --accent-amber: #f5a623;
    --accent-amber-dim: rgba(245, 166, 35, 0.15);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Spacing */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 8rem;

    /* Border Radius */
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-round: 999px;

    /* Transitions */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.8s var(--ease-out-expo);
    --transition-fast: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

/* ==== TYPOGRAPHY ==== */
h1,
h2,
h3,
h4 {
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.text-amber {
    color: var(--accent-amber);
}

.text-silver {
    color: var(--text-secondary);
}

.eyebrow {
    display: block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
    font-weight: 600;
}

/* ==== LAYOUT ==== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.max-w-lg {
    max-width: 800px;
    margin-inline: auto;
}

.mt-2 {
    margin-top: 2rem;
}

/* ==== NAVIGATION ==== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    padding: 1.5rem 0;
    transition: background-color var(--transition-fast), backdrop-filter var(--transition-fast);
}

.navbar.glass-nav {
    background: rgba(10, 10, 11, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--text-primary);
}

/* ==== BUTTONS & LINKS ==== */
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    background-color: var(--text-primary);
    color: var(--bg-base);
    font-weight: 500;
    font-size: 1rem;
    border-radius: var(--radius-round);
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.btn-premium:hover {
    transform: scale(1.02);
    background-color: #e5e5e5;
}

.btn-primary-small {
    padding: 0.6rem 1.25rem;
    background-color: var(--bg-elevated);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-round);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-primary-small:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-secondary-outline {
    display: inline-flex;
    padding: 0.8rem 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-round);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.btn-secondary-outline:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 2px;
}

.link-arrow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background-color: var(--text-primary);
    transition: width var(--transition-fast);
}

.link-arrow:hover::after {
    width: 100%;
}

.link-arrow span {
    transition: transform var(--transition-fast);
}

.link-arrow:hover span {
    transform: translateX(4px);
}

/* ==== HERO SECTION ==== */
.hero-premium {
    position: relative;
    height: 100vh;
    min-height: 800px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg-wrapper {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.6;
}

.hero-vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, transparent 0%, var(--bg-base) 100%),
        linear-gradient(to bottom, rgba(10, 10, 11, 0.2) 0%, var(--bg-base) 95%);
}

.hero-content-premium {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding-top: 4rem;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5.5rem);
    font-weight: 600;
    line-height: 1.05;
    margin-bottom: 2rem;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 3rem;
    line-height: 1.6;
    font-weight: 400;
}

/* ==== SECTIONS ==== */
.section {
    padding: var(--space-2xl) 0;
    position: relative;
}

.section-heading {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 500;
    margin-bottom: 2rem;
}

.section-heading.centered {
    margin-bottom: 4rem;
}

.body-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.large-text {
    font-size: 1.5rem;
    line-height: 1.5;
}

/* ==== SPLIT LAYOUT ==== */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.split-layout.reverse {
    direction: rtl;
}

.split-layout.reverse>* {
    direction: ltr;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--bg-surface);
    aspect-ratio: 4/5;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
}

.portrait-wrapper {
    aspect-ratio: 3/4;
}

/* ==== LISTS ==== */
.clean-list {
    list-style: none;
    margin: 2rem 0;
}

.clean-list li {
    font-size: 1.1rem;
    color: var(--text-secondary);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.clean-list li strong {
    color: var(--text-primary);
    font-weight: 500;
    margin-right: 0.5rem;
}

/* ==== METHOD CARDS ==== */
.method-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.method-card {
    background: var(--bg-surface);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.03);
    text-align: left;
    transition: transform var(--transition-fast), background var(--transition-fast);
}

.method-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
}

.card-number {
    font-family: 'Space Grotesk', var(--font-primary);
    font-size: 0.85rem;
    color: var(--accent-amber);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.method-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.method-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==== FOOTER ==== */
.footer-premium {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 6rem 0 2rem;
    background-color: var(--bg-base);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 6rem;
}

.logo-large {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.05em;
}

.footer-cta p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-tertiary);
    font-size: 0.85rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    transition: color var(--transition-fast);
}

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

/* ==== RESPONSIVE DESIGN ==== */
@media (max-width: 1024px) {
    .split-layout {
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .split-layout,
    .split-layout.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
        /* Reset reverse on mobile */
    }

    .image-wrapper {
        aspect-ratio: 16/9;
        order: -1;
        /* Image on top on mobile */
    }

    .method-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-inline: auto;
    }

    .footer-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }
}

/* ==== SIMPLE ANIMATION CLASSES ==== */
.reveal-text {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s var(--ease-out-expo) forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

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

.fade-in-img {
    animation: subtleZoom 10s ease-out forwards;
}

@keyframes subtleZoom {
    0% {
        transform: scale(1.05);
        opacity: 0;
    }

    10% {
        opacity: 0.6;
    }

    100% {
        transform: scale(1);
        opacity: 0.6;
    }
}