:root {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    --surface: rgba(255, 255, 255, 0.05);
    --surface-hover: rgba(255, 255, 255, 0.1);
    --border: rgba(255, 255, 255, 0.1);
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.app-container {
    width: 100%;
    max-width: 1200px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease-out;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* Join Container */
.join-container {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    max-width: 400px;
    animation: zoomIn 0.5s ease-out;
}

.join-container input {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}

.join-container input:focus {
    border-color: var(--primary);
}

.primary-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.primary-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* Video Container */
.video-container {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.5s ease-out;
}

.video-wrapper {
    position: absolute;
    border-radius: 24px;
    overflow: hidden;
    background: #000;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-wrapper .label {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 400;
    z-index: 10;
}

/* Remote video takes full screen mostly */
.remote {
    width: 100%;
    max-width: 1000px;
    height: 70vh;
    z-index: 1;
}

/* Local video is PiP (Picture in Picture) */
.local {
    width: 240px;
    height: 180px;
    bottom: 2rem;
    right: 2rem;
    z-index: 2;
    border: 2px solid var(--primary);
    transition: transform 0.3s ease;
}

.local:hover {
    transform: scale(1.05);
}

/* Controls */
.controls {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1.5rem;
    background: var(--surface);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    padding: 1rem 2rem;
    border-radius: 50px;
    z-index: 10;
    box-shadow: var(--shadow);
}

.control-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-btn svg {
    width: 24px;
    height: 24px;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.control-btn.active {
    background: var(--primary);
}

.control-btn.danger {
    background: var(--danger);
}

.control-btn.danger:hover {
    background: var(--danger-hover);
}

.control-btn.muted {
    background: var(--danger);
}

/* Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .remote {
        height: 60vh;
    }
    
    .local {
        width: 160px;
        height: 120px;
        bottom: 6rem;
        right: 1rem;
    }
    
    .controls {
        bottom: 1rem;
        padding: 0.8rem 1.5rem;
        gap: 1rem;
    }
    
    .control-btn {
        width: 48px;
        height: 48px;
    }
}