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

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-light: #1a1a1a;
    --gray-medium: #2a2a2a;
    --spacing-xs: 14px;
    --spacing-sm: 20px;
    --spacing-md: 40px;
    --spacing-lg: 80px;
    --spacing-xl: 120px;
    --radius-sm: 28px;
    --radius-lg: 40px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

@media (hover: hover) and (pointer: fine) {
    body {
        cursor: none;
    }
}

/* Custom Cursor */
.cursor-trail {
    position: fixed;
    width: 1px;
    height: 100vh;
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.1) 20%, 
        rgba(255, 255, 255, 0.3) 50%, 
        rgba(255, 255, 255, 0.1) 80%, 
        transparent 100%);
    pointer-events: none;
    z-index: 9999;
    transform-origin: center top;
    opacity: 0;
    transition: opacity 0.3s ease;
    mix-blend-mode: difference;
}

.cursor-trail.active {
    opacity: 1;
}

.cursor-dot {
    position: fixed;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.8);
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
    transition: transform 0.1s ease-out, width 0.2s ease, height 0.2s ease;
}

.cursor-dot.hover {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.cursor-particles {
    position: fixed;
    pointer-events: none;
    z-index: 9998;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    pointer-events: none;
    mix-blend-mode: difference;
}

@media (hover: none) or (pointer: coarse) {
    .cursor-trail,
    .cursor-dot,
    .cursor-particles {
        display: none !important;
    }
    
    body {
        cursor: auto !important;
    }
}

/* Grain/Noise Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 1000;
    opacity: 0.4;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 18px;
    font-weight: 900;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--white);
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--spacing-xl) var(--spacing-md);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.hero-content {
    text-align: center;
    z-index: 3;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.hero-logo {
    font-size: clamp(64px, 12vw, 180px);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 0.9;
    background: linear-gradient(180deg, var(--white) 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.1);
}

.hero-subtitle {
    font-size: clamp(20px, 3vw, 36px);
    font-weight: 600;
    letter-spacing: 1px;
    opacity: 0.9;
    margin-top: var(--spacing-sm);
}

.hero-tagline {
    font-size: clamp(16px, 2vw, 24px);
    font-weight: 400;
    opacity: 0.7;
    letter-spacing: 0.5px;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--white) 0%, transparent 100%);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0%, 100% { opacity: 0.3; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(10px); }
}

/* Systems Section */
.systems {
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
}

.systems-container {
    max-width: 1400px;
    margin: 0 auto;
}

.systems-header {
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-sm);
}

.systems-title {
    font-size: clamp(48px, 8vw, 120px);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 0.9;
}

.systems-gallery {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.system-item {
    opacity: 0;
    transform: translateY(40px);
    transition: var(--transition);
    position: relative;
}

.system-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.system-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    grid-template-rows: auto auto;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: visible;
}

.system-content:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.system-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-sm);
    grid-row: 1;
}

.system-name {
    font-size: clamp(32px, 5vw, 64px);
    font-weight: 900;
    letter-spacing: -1px;
    margin-bottom: var(--spacing-xs);
    line-height: 1.1;
}

.system-location {
    font-size: clamp(14px, 1.5vw, 18px);
    font-weight: 500;
    opacity: 0.6;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.system-description {
    font-size: clamp(16px, 2vw, 20px);
    font-weight: 400;
    opacity: 0.8;
    line-height: 1.6;
    max-width: 500px;
}

.system-video {
    position: relative;
    border-radius: var(--radius-sm);
    overflow: hidden;
    aspect-ratio: 16 / 9;
    grid-row: 1;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.system-video:has(.mobile-frame) {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-lg);
    aspect-ratio: auto;
    border: none;
}

.mobile-frame {
    position: relative;
    width: 100%;
    max-width: 320px;
    aspect-ratio: 9 / 16;
    background: rgba(0, 0, 0, 0.95);
    border-radius: 32px;
    padding: 12px 8px;
    box-shadow: 
        0 0 0 2px rgba(255, 255, 255, 0.1),
        0 20px 60px rgba(0, 0, 0, 0.8),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.mobile-frame::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 24px;
    background: rgba(0, 0, 0, 0.95);
    border-radius: 0 0 16px 16px;
    z-index: 2;
}

.mobile-frame::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    z-index: 3;
}

.system-video-player {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-sm);
    display: block;
}

.mobile-frame .system-video-player {
    object-fit: contain;
    border-radius: 24px;
    background: rgba(0, 0, 0, 0.3);
}

.video-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.video-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(255, 255, 255, 0.02) 2px,
        rgba(255, 255, 255, 0.02) 4px
    );
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translateY(0); }
    100% { transform: translateY(20px); }
}

.video-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: var(--transition);
}

.video-placeholder:hover .video-overlay {
    transform: scale(1.1);
}

.play-icon {
    width: 60px;
    height: 60px;
    color: var(--white);
    opacity: 0.8;
    transition: var(--transition);
}

.video-placeholder:hover .play-icon {
    opacity: 1;
    transform: scale(1.2);
}

/* Tech Stack - Hidden by default, shown on hover below video */
.tech-stack {
    grid-column: 1 / -1;
    grid-row: 2;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    transform: translateY(-10px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    margin-top: 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.system-content:hover .tech-stack {
    opacity: 1;
    visibility: visible;
    max-height: 500px;
    transform: translateY(0);
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
}

.tech-category {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.tech-icon {
    font-size: 48px;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
    align-items: center;
}

.tech-tag {
    display: inline-block;
    padding: 10px 18px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--white);
    letter-spacing: 0.3px;
    transition: var(--transition);
    white-space: nowrap;
}

.tech-tag:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
}

/* Process Section */
.process {
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
}

.process-container {
    max-width: 1400px;
    margin: 0 auto;
}

.process-title {
    font-size: clamp(48px, 8vw, 120px);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 0.9;
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-sm);
}

.process-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.process-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.process-step.visible {
    opacity: 1;
    transform: translateY(0);
}

.process-step:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.step-icon {
    margin-bottom: var(--spacing-sm);
}

.step-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 24px;
    font-weight: 900;
    background: rgba(255, 255, 255, 0.02);
    transition: var(--transition);
}

.process-step:hover .step-circle {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.05);
    transform: scale(1.1);
}

.step-title {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.5px;
}

.step-description {
    font-size: clamp(14px, 1.5vw, 18px);
    opacity: 0.7;
    line-height: 1.6;
}

.process-arrow {
    font-size: 32px;
    opacity: 0.3;
    font-weight: 300;
}

/* Contact Section */
.contact {
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.contact-title {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 0.9;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.contact-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: 500;
    opacity: 0.7;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    letter-spacing: 0.5px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    transition: var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group textarea:focus {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-submit {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--white);
    color: var(--black);
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
    margin-top: var(--spacing-sm);
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

.form-submit:active {
    transform: translateY(0);
}

.arrow-icon {
    width: 20px;
    height: 20px;
    stroke: var(--black);
}

/* Footer */
.footer {
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-text {
    font-size: 14px;
    opacity: 0.5;
    letter-spacing: 0.5px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .system-content {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }
    
    .system-text {
        grid-row: 1;
    }
    
    .system-video {
        grid-row: 2;
    }
    
    .system-video:has(.mobile-frame) {
        padding: var(--spacing-sm);
    }
    
    .mobile-frame {
        max-width: 280px;
        margin: 0 auto;
    }
    
    .tech-stack {
        grid-column: 1;
        grid-row: 3;
        padding: var(--spacing-sm);
    }
    
    .process-flow {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .tech-tags {
        gap: 8px;
    }
    
    .tech-tag {
        font-size: 12px;
        padding: 8px 14px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 12px;
    }
    
    .systems-gallery {
        gap: var(--spacing-md);
    }
    
    .system-content {
        padding: var(--spacing-sm);
    }
    
    .tech-icon {
        font-size: 36px;
    }
}

/* Smooth Scroll Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}