:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    background-image: radial-gradient(circle at 50% 50%, #1e293b 0%, #0f172a 100%);
}

#login-screen {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    text-align: center;
    max-width: 400px;
    width: 90%;
    z-index: 10;
}

h1 {
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p.subtitle {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

input {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    color: #fff;
    padding: 0.8rem 1rem;
    border-radius: 0.5rem;
    width: 100%;
    margin-bottom: 1rem;
    font-size: 1rem;
    transition: all 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    font-size: 1rem;
    transition: transform 0.1s, background 0.2s;
}

button:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

#video-container {
    display: none; /* Hidden by default */
    position: relative;
    width: 100%;
    height: 100%;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem;
}

video {
    background: #000;
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    object-fit: cover;
    transition: all 0.3s ease;
}

#localVideo {
    width: 300px;
    height: 225px;
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    border: 2px solid var(--glass-border);
    z-index: 20;
}

#remoteVideo {
    width: 100%;
    height: 100%;
    max-width: 1200px;
    max-height: 800px;
}

.controls {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    padding: 1rem;
    border-radius: 3rem;
    border: 1px solid var(--glass-border);
    z-index: 30;
}

.control-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    cursor: pointer;
    transition: background 0.2s;
}

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

.control-btn.danger {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.control-btn.danger:hover {
    background: rgba(239, 68, 68, 0.4);
}

#status-msg {
    position: absolute;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(15, 23, 42, 0.8);
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    border: 1px solid var(--glass-border);
    z-index: 40;
}