/* Modern Glassmorphism Theme */
:root {
    --bg-color: #0f0c29;
    --bg-gradient: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    --text-color: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-color: #00d2ff;
    --accent-gradient: linear-gradient(to right, #00d2ff, #3a7bd5);

    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --backdrop-blur: 10px;
}

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-gradient);
    background-attachment: fixed;
    /* Parallax effect */
    color: var(--text-color);
    min-height: 100vh;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 20px 80px 20px;
    /* Bottom padding for Nav */
}

h1,
h2 {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    letter-spacing: -1px;
}

/* Card Styling (Glass) */
.node-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 20px;
    margin-bottom: 25px;
    border-radius: 16px;
    backdrop-filter: blur(var(--backdrop-blur));
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.node-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.2);
}

.node-meta {
    font-size: 0.85em;
    color: var(--text-secondary);
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
}

.node-content {
    font-size: 1.1em;
    line-height: 1.6;
    color: #e0e0e0;
}

/* Navigation Bar */
.bottom-nav {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(15, 12, 41, 0.85);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    padding: 10px 20px;
    border-radius: 50px;
    display: flex;
    gap: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.nav-item {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    padding: 10px;
    border-radius: 50%;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-item:hover,
.nav-item.active {
    color: #fff;
    background: var(--accent-gradient);
    transform: scale(1.1);
}

/* Portal Grid (Index) */
.portal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.portal-card {
    text-decoration: none;
    color: white;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 40px;
    text-align: center;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.portal-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.03);
    border-color: var(--accent-color);
}

.portal-icon {
    font-size: 4em;
    display: block;
    margin-bottom: 20px;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

/* TabNews Style Specifics */
.tab-item {
    padding: 15px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    transition: background 0.2s;
}

.tab-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.tab-index {
    color: var(--accent-color);
    font-weight: bold;
    min-width: 30px;
}

.tab-title {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
}

/* TikTok Feed */
.tiktok-feed {
    height: 100vh;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
    background: #000;
}

.tiktok-card {
    height: 100vh;
    width: 100vw;
    scroll-snap-align: start;
    position: relative;
    border: none;
    background: #000;
}

.tiktok-card video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* Fill screen */
}

.tiktok-overlay {
    position: absolute;
    bottom: 100px;
    /* Above nav bar */
    left: 20px;
    right: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.tiktok-nav {
    /* Override nav for tiktok to be on top of video */
    background: rgba(0, 0, 0, 0.6) !important;
}.btn-disabled { opacity: 0.4; pointer-events: none; cursor: default; filter: grayscale(100%); }