/* ================================
   CSS Variables & Reset
   ================================ */
:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-card: #1a1a1a;
    --color-text: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #666666;
    --color-accent: #ffffff;
    --color-accent-hover: #e0e0e0;
    --color-border: #2a2a2a;
    --color-gradient-1: #1a1a1a;
    --color-gradient-2: #2d2d2d;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    --font-weight-black: 900;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    --container-max: 1200px;
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ================================
   Header
   ================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-black);
    letter-spacing: 0.1em;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
}

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

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

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

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

/* ================================
   Hero Section
   ================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(255,255,255,0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255,255,255,0.02) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    max-width: 700px;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: var(--font-weight-black);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.hero-line {
    display: block;
}

.hero-line:nth-child(2) {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-light);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

.hero-desc {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.95rem;
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    border-color: var(--color-text);
    background: rgba(255,255,255,0.05);
}

.hero-visual {
    position: absolute;
    right: -10%;
    top: 50%;
    transform: translateY(-50%);
    width: 60%;
    height: 80%;
    pointer-events: none;
}

.hero-shapes {
    position: relative;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 8s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #ffffff 0%, #888888 100%);
    top: 20%;
    right: 20%;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #666666 0%, #333333 100%);
    top: 50%;
    right: 40%;
    animation-delay: -2s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #999999 0%, #555555 100%);
    top: 30%;
    right: 60%;
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(30px, -30px);
    }
}

/* ================================
   Services Section
   ================================ */
.services {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: var(--font-weight-black);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-text-muted);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ================================
   About Section
   ================================ */
.about {
    padding: var(--spacing-3xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.about-desc {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.about-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
    color: var(--color-text);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.about-visual {
    position: relative;
    height: 400px;
}

.about-shape {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--color-gradient-1) 0%, var(--color-gradient-2) 100%);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.about-shape::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 1px solid var(--color-border);
    border-radius: calc(var(--border-radius) - 4px);
}

/* ================================
   Contact Section
   ================================ */
.contact {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

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

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

.contact-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.contact-value {
    font-size: 1.1rem;
    font-weight: var(--font-weight-medium);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-text-muted);
}

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

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

/* ================================
   Footer
   ================================ */
.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: var(--font-weight-black);
    letter-spacing: 0.1em;
}

.footer-text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    transition: var(--transition);
}

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

/* ================================
   Responsive
   ================================ */
@media (max-width: 968px) {
    .about-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .about-visual {
        display: none;
    }
    
    .hero-visual {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-wrap: wrap;
        justify-content: center;
    }
}