* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic", sans-serif;
    background: #101418;
    color: #f2f2f2;
}
.wrap {
    max-width: 480px;
    margin: 0 auto;
    padding: 48px 20px;
}
h1 { font-size: 1.6rem; margin-bottom: 4px; }
.lead { color: #a0a8b0; margin-bottom: 32px; }
.card {
    background: #1a2028;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
}
.card h2 { margin-top: 0; font-size: 1.1rem; }
.room-code {
    font-size: 2rem;
    letter-spacing: 0.3em;
    font-weight: 700;
    text-align: center;
    background: #0d1116;
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0;
}
.btn {
    display: block;
    width: 100%;
    text-align: center;
    padding: 14px;
    border-radius: 8px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}
.btn-primary { background: #3b82f6; color: #fff; }
.btn-secondary { background: #2a323c; color: #fff; }
.join-form { display: flex; gap: 8px; }
.join-form input {
    flex: 1;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #333c46;
    background: #0d1116;
    color: #fff;
    font-size: 1rem;
}
.join-form .btn { width: auto; padding: 12px 20px; }

.call-wrap {
    height: 100vh;
    display: flex;
    flex-direction: column;
}
.videos {
    position: relative;
    flex: 1;
    background: #000;
    overflow: hidden;
}
.videos video {
    background: #000;
    object-fit: cover;
}
.video-main {
    width: 100%;
    height: 100%;
}
.video-pip {
    position: absolute;
    right: 16px;
    bottom: 16px;
    width: 30%;
    max-width: 220px;
    border-radius: 10px;
    border: 2px solid #333c46;
}
.status {
    text-align: center;
    padding: 8px;
    color: #a0a8b0;
    font-size: 0.9rem;
}
.controls {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 16px;
    background: #101418;
}
.ctrl-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: #2a323c;
    color: #fff;
    font-size: 1.4rem;
    cursor: pointer;
}
.ctrl-btn.ctrl-off { background: #4b5563; opacity: 0.6; }
.ctrl-btn-danger { background: #dc2626; width: auto; border-radius: 28px; padding: 0 24px; font-size: 1rem; font-weight: 600; }