/* ================================
   CSS Variables & Base Styles
   ================================ */
:root {
    /* Colors */
    --color-bg: #0a0a0b;
    --color-bg-elevated: #111113;
    --color-bg-card: #161618;
    --color-surface: #1c1c1f;
    --color-border: #2a2a2e;
    --color-border-light: #3a3a3f;
    
    --color-text: #fafafa;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    
    --color-accent: #0070f3;
    --color-accent-light: #3291ff;
    --color-accent-glow: rgba(0, 112, 243, 0.4);
    --color-accent-subtle: rgba(0, 112, 243, 0.1);
    
    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --section-padding: clamp(80px, 12vw, 140px);
    --container-max: 1200px;
    --container-padding: clamp(20px, 5vw, 40px);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-slower: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

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

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ================================
   Typography
   ================================ */
.section-tag {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: 1rem;
}

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

/* ================================
   Navigation
   ================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: var(--transition-base);
}

.nav.scrolled {
    background: rgba(10, 10, 11, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--color-accent);
}

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

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

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

.nav-cta {
    padding: 0.625rem 1.25rem !important;
    background: var(--color-accent);
    color: var(--color-text) !important;
    border-radius: 6px;
    transition: var(--transition-base) !important;
}

.nav-cta:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-base);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    z-index: 999;
    padding: 100px var(--container-padding);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.mobile-menu-links a {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
}

/* ================================
   Hero Section
   ================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--container-padding) 80px;
    overflow: hidden;
}

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

.hero-gradient {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, var(--color-accent-subtle) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
    animation: gradientMove 20s ease infinite;
}

@keyframes gradientMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-5%, -5%) rotate(5deg); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.3;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: var(--color-accent);
    filter: blur(150px);
    opacity: 0.15;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.title-accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle strong {
    color: var(--color-text);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-text-muted), transparent);
    animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.01% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-text);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px var(--color-accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

.btn-secondary:hover {
    background: var(--color-surface);
    border-color: var(--color-text-muted);
}

.btn-full {
    width: 100%;
}

/* ================================
   Services Section
   ================================ */
.services {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.service-card {
    padding: 2rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: var(--transition-base);
}

.service-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border-radius: 12px;
    margin-bottom: 1.25rem;
    color: var(--color-accent);
}

.service-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ================================
   Work Section
   ================================ */
.work {
    padding: var(--section-padding) 0;
    background: var(--color-bg-elevated);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.project-card {
    display: block;
    border-radius: 16px;
    overflow: hidden;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
}

.project-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.project-card-wide {
    grid-column: span 2;
}

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.project-card-wide .project-image {
    aspect-ratio: 21/9;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent-subtle) 0%, var(--color-surface) 100%);
}

.project-placeholder.placeholder-alt {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, var(--color-surface) 100%);
}

.project-placeholder.placeholder-dark {
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg) 100%);
}

.project-initial {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-accent);
    opacity: 0.3;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.view-project {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--color-accent);
    color: var(--color-text);
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    transform: translateY(10px);
    transition: var(--transition-base);
}

.project-card:hover .view-project {
    transform: translateY(0);
}

.project-info {
    padding: 1.5rem;
}

.project-type {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.project-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .work-grid {
        grid-template-columns: 1fr;
    }
    
    .project-card-wide {
        grid-column: span 1;
    }
}

/* ================================
   About Section
   ================================ */
.about {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.about-text {
    margin-bottom: 2rem;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-stats {
    display: flex;
    gap: 2.5rem;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-card {
    position: relative;
    max-width: 400px;
    padding: 2.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
}

.about-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 20px;
    padding: 1px;
    background: linear-gradient(135deg, var(--color-accent) 0%, transparent 50%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.quote-mark {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 800;
    color: var(--color-accent);
    opacity: 0.3;
    line-height: 0.5;
    margin-bottom: 1rem;
}

.about-card-content p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.about-signature {
    display: flex;
    flex-direction: column;
}

.signature-name {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-text);
}

.signature-title {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-stats {
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .about-visual {
        order: -1;
    }
}

/* ================================
   Process Section
   ================================ */
.process {
    padding: var(--section-padding) 0;
    background: var(--color-bg-elevated);
}

.process-timeline {
    display: grid;
    gap: 0;
}

.process-step {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--color-border);
}

.process-step:last-child {
    border-bottom: none;
}

.step-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-accent);
    opacity: 0.3;
    line-height: 1;
}

.step-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.step-desc {
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 600px;
}

@media (max-width: 768px) {
    .process-step {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .step-number {
        font-size: 2rem;
    }
}

/* ================================
   Contact Section
   ================================ */
.contact {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.contact-text {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text);
    font-weight: 500;
    transition: var(--transition-fast);
}

.contact-link:hover {
    color: var(--color-accent);
}

.contact-form-wrapper {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2371717a' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

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

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* ================================
   Footer
   ================================ */
.footer {
    padding: 4rem 0 2rem;
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 2rem;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

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

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-align: center;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 1.5rem;
    }
}

/* ================================
   Animations
   ================================ */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), 
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.services-grid .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.services-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.services-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.services-grid .animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }

.work-grid .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.work-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.15s; }
.work-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.3s; }

.process-timeline .animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.process-timeline .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.process-timeline .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.process-timeline .animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }