/* QVTX Theme - Unified Dark Theme */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --border: #2a2a3a;
    --text-primary: #ffffff;
    --text-secondary: #8888aa;
    --text-muted: #555566;
    --accent-cyan: #00f0ff;
    --accent-green: #00ff88;
    --accent-gold: #ffd700;
    --gradient-1: linear-gradient(135deg, #00f0ff 0%, #00ff88 100%);
    --gradient-2: linear-gradient(135deg, #ffd700 0%, #ff8800 100%);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-green);
}

/* ============ NAVIGATION ============ */
.qvtx-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 40px;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.nav-logo {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
    color: var(--bg-primary);
}

.nav-title {
    font-weight: 700;
    font-size: 24px;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    align-items: center;
}

.nav-links > li {
    position: relative;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
    padding: 8px 0;
}

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

/* Dropdown Menu */
.nav-dropdown {
    position: relative;
}

.nav-dropdown > a {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-dropdown > a::after {
    content: '';
    border: 4px solid transparent;
    border-top-color: var(--text-secondary);
    margin-top: 2px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 220px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    margin-top: 8px;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--text-secondary);
    font-size: 13px;
}

.dropdown-menu a:hover {
    background: var(--bg-secondary);
    color: var(--accent-cyan);
}

.dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 8px 0;
}

.dropdown-header {
    padding: 8px 20px 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.nav-actions {
    display: flex;
    gap: 12px;
}

/* ============ BUTTONS ============ */
.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 240, 255, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

/* ============ PAGE HEADER ============ */
.page-header {
    padding: 60px 40px;
    text-align: center;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.page-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============ CONTAINERS ============ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.section {
    padding: 80px 40px;
}

.section-alt {
    background: var(--bg-secondary);
}

/* ============ CARDS ============ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.2s;
}

.card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-4px);
}

/* ============ GRIDS ============ */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* ============ FOOTER ============ */
.qvtx-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 60px 40px 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-brand h3 {
    font-size: 24px;
    margin-bottom: 8px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 13px;
}

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

.footer-bottom {
    max-width: 1400px;
    margin: 40px auto 0;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .qvtx-nav {
        padding: 12px 20px;
    }
    .nav-links {
        display: none;
    }
    .page-header {
        padding: 40px 20px;
    }
    .page-title {
        font-size: 28px;
    }
    .section {
        padding: 40px 20px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}