/* ========================================
   CSS Custom Properties
   Theme: Dark Tech Luxury
   ======================================== */
:root {
    /* Colors */
    --bg-primary: #0a0f1e;
    --bg-secondary: #111827;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --accent-primary: #00e5ff;
    --accent-secondary: #6c63ff;
    --accent-gradient: linear-gradient(135deg, #6c63ff 0%, #00e5ff 100%);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.1);
    --glow-cyan: 0 0 30px rgba(0, 229, 255, 0.3);
    --glow-cyan-strong: 0 0 40px rgba(0, 229, 255, 0.5);
    
    /* Typography */
    --font-headline: 'Syne', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-max: 1280px;
    --gap-sm: 16px;
    --gap-md: 24px;
    --gap-lg: 48px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

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

ul, ol {
    list-style: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

/* ========================================
   Utility Classes
   ======================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-family: var(--font-headline);
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--gap-lg);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-medium);
    border: none;
}

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

.btn-primary:hover {
    background: #33ebff;
    box-shadow: var(--glow-cyan);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
}

.btn-outline:hover {
    background: rgba(0, 229, 255, 0.1);
}

/* ========================================
   Navigation Bar
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: background var(--transition-medium), backdrop-filter var(--transition-medium), box-shadow var(--transition-medium);
}

.navbar.scrolled {
    background: rgba(10, 15, 30, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-headline);
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo img {
    height: 60px;
    width: auto;
    display: block;
}

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

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-medium);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-primary);
}

/* ========================================
   Hamburger Menu
   ======================================== */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger span {
    width: 28px;
    height: 2px;
    background: var(--text-primary);
    transition: transform var(--transition-medium), opacity var(--transition-medium);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========================================
   Mobile Menu
   ======================================== */
.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 999;
}

.mobile-overlay.active {
    display: block;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    padding: 100px 40px 40px;
    transition: right var(--transition-medium);
    z-index: 999;
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu .nav-link {
    display: block;
    font-size: 24px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-subtle);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 80px 0 40px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.footer-title {
    font-family: var(--font-headline);
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    font-size: 14px;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

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

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-muted);
}

.contact-item svg {
    width: 18px;
    height: 18px;
    stroke: var(--accent-primary);
    fill: none;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    font-size: 13px;
    color: var(--text-muted);
}

.footer-admin-link {
    color: var(--text-muted);
    font-size: 12px;
    margin-left: 16px;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.footer-divider {
    margin-left: 16px;
    opacity: 0.4;
}

.footer-admin-link:hover {
    opacity: 1;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    transition: all var(--transition-medium);
}

.social-link:hover {
    border-color: var(--accent-primary);
    background: rgba(0, 229, 255, 0.1);
}

.social-link svg {
    width: 20px;
    height: 20px;
    stroke: var(--text-secondary);
    fill: none;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1279px) {
    :root {
        --section-padding: 100px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 767px) {
    :root {
        --section-padding: 80px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .mobile-overlay {
        display: block;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}