:root {
    --brand-blue: #0288d1;
    --brand-cyan: #26c6da;
    --bg-dark: #12181f;
    --card-dark: #1e2630;
    --sidebar-blue: #1c5285;
    --text-light: #e2e8f0;
    --text-muted: #94a3b8;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* Glassmorphism Navbar */
.navbar-glass {
    background-color: rgba(18, 24, 31, 0.55);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.25);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar-glass.scrolled {
    background-color: rgba(18, 24, 31, 0.88);
    border-bottom-color: rgba(38, 198, 218, 0.2);
    box-shadow: 0 10px 40px 0 rgba(0, 0, 0, 0.5);
}

/* Ambient light edge on top of navbar */
.navbar-glass::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    pointer-events: none;
}

/* Nav Links Glow & Interaction */
.navbar-glass .nav-link {
    color: var(--text-muted);
    transition: color 0.2s ease, text-shadow 0.2s ease;
    position: relative;
}

.navbar-glass .nav-link:hover,
.navbar-glass .nav-link.active {
    color: var(--text-light);
    text-shadow: 0 0 12px rgba(38, 198, 218, 0.4);
}

.hero-section {
    padding: 100px 0 60px 0;
    background: radial-gradient(circle at top right, rgba(38, 198, 218, 0.15), transparent 50%),
                radial-gradient(circle at top left, rgba(28, 82, 133, 0.3), transparent 50%);
}

.app-logo {
    width: 90px;
    height: 90px;
    border-radius: 22px;
    box-shadow: 0 10px 25px rgba(2, 136, 209, 0.3);
}

.gradient-text {
    background: linear-gradient(135deg, #4fc3f7, #26c6da);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-card {
    background-color: var(--card-dark);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(38, 198, 218, 0.4);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(2, 136, 209, 0.15);
    color: #4fc3f7;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.hero-screenshot {
    border-radius: 12px;
    border: none;
    box-shadow: none;
}

.app-screenshot {
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.badge-md {
    background: rgba(236, 72, 153, 0.2);
    color: #f472b6;
    font-family: monospace;
    padding: 2px 8px;
    border-radius: 4px;
}

footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

footer a {
    color: var(--brand-cyan);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Modal Styles */
.modal-content {
    background-color: var(--card-dark);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-light);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.version-notes-iframe {
    width: 100%;
    height: 550px;
    border: none;
    border-radius: 0 0 16px 16px;
    background: transparent;
}

.modal-backdrop.coming-soon-backdrop {
    background-color: rgba(10, 14, 20, 0.65) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    opacity: 1 !important;
}

.coming-soon-card {
    background: rgba(30, 38, 48, 0.8) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}