/* Base & Reset */
:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-color: #3b82f6; /* Modern Blue */
    --accent-hover: #60a5fa;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.05);
    --font-main: 'Outfit', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.highlight {
    background: linear-gradient(135deg, #ffffff 0%, #7a7a7a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

/* Navigation - Glassmorphism */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    z-index: 100;
    background: rgba(5, 5, 5, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: color 0.3s ease;
}

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

/* Buttons */
.btn-primary {
    background: var(--text-primary);
    color: var(--bg-color) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 100px;
    font-weight: 600 !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease !important;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    padding: 0.6rem 1.5rem;
    border-radius: 100px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: rgba(255,255,255,0.2);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 5%;
    position: relative;
    padding-top: 80px;
}

.hero-content {
    flex: 1;
    z-index: 2;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5.5rem);
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    font-weight: 300;
}

.hero-model-container {
    flex: 1.5;
    height: 80vh;
    position: relative;
}

.main-model {
    width: 100%;
    height: 100%;
    --poster-color: transparent;
}

/* Custom AR Button */
.ar-button {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 100px;
    color: white;
    padding: 12px 24px;
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.ar-button:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateX(-50%) scale(1.05);
}

.ar-button:active {
    background-color: rgba(255, 255, 255, 0.3);
}

/* Portfolio Grid */
.work-section {
    padding: 100px 5%;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.4s ease;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    border-color: rgba(255,255,255,0.1);
}

.card-model {
    width: 100%;
    height: 350px;
    background: rgba(0,0,0,0.2);
}

.card-model model-viewer {
    width: 100%;
    height: 100%;
}

.card-info {
    padding: 1.5rem;
}

.card-info h3 {
    font-size: 1.4rem;
    margin-bottom: 0.3rem;
}

.card-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* About Section */
.about-section {
    padding: 100px 5%;
    text-align: center;
    background: linear-gradient(to top, rgba(255,255,255,0.02), transparent);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.about-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--glass-border);
}

/* Responsive */
@media (max-width: 900px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }

    .hero-model-container {
        width: 100%;
        height: 50vh;
        margin-top: 2rem;
    }

    .nav-links a:not(.btn-primary) {
        display: none; /* Simple mobile nav for now */
    }
}

@media (max-width: 600px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
}