:root {
    --bg-color: #0b0c10;
    --surface-color: rgba(31, 40, 51, 0.6);
    --surface-border: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #c5c6c7;
    --accent-color: #66fcf1;
    --accent-glow: rgba(102, 252, 241, 0.4);
    --shadow-strong: 0 10px 30px rgba(0, 0, 0, 0.5);
    --font-primary: 'Outfit', sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-primary);
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        radial-gradient(ellipse at top right, rgba(102, 252, 241, 0.15), transparent 40%),
        radial-gradient(ellipse at bottom left, rgba(69, 162, 158, 0.15), transparent 40%);
    background-attachment: fixed;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 20px;
    gap: 20px;
}

.glass-header, .glass-footer {
    background: var(--surface-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--surface-border);
    border-radius: 16px;
    padding: 20px 30px;
    box-shadow: var(--shadow-strong);
}

.glass-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 20px;
    z-index: 100;
}

.header-content h1 {
    font-weight: 800;
    font-size: 1.8rem;
    letter-spacing: 1px;
    background: linear-gradient(90deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 4px;
}

.header-content p {
    color: var(--text-secondary);
    font-weight: 300;
    font-size: 0.95rem;
}

.btn {
    font-family: var(--font-primary);
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
}

.primary-btn {
    background-color: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    box-shadow: 0 0 10px transparent;
}

.primary-btn:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-2px);
}

.feeds-grid {
    display: grid;
    gap: 20px;
    flex-grow: 1;
    width: 100%;
}

.grid-2x { grid-template-columns: repeat(auto-fit, minmax(45%, 1fr)); }
.grid-3x { grid-template-columns: repeat(auto-fit, minmax(30%, 1fr)); }

.video-card {
    background: var(--surface-color);
    border: 1px solid var(--surface-border);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-strong);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.video-card:hover {
    transform: translateY(-5px);
    border-color: rgba(102, 252, 241, 0.3);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 20px var(--accent-glow);
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    background: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-info {
    padding: 15px;
    background: linear-gradient(180deg, transparent, rgba(0,0,0,0.4));
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.glass-footer {
    text-align: center;
    border-radius: 12px;
    padding: 15px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

@media (max-width: 900px) {
    .glass-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    .grid-3x { grid-template-columns: 1fr; }
    .grid-2x { grid-template-columns: 1fr; }
}