body { font-family: 'Nunito', sans-serif; padding: 0; margin: 0; background: linear-gradient(135deg, #f0f4f8 0%, #e0e7ff 100%); color: #1e293b; min-height: 100vh; }
.container { max-width: 800px; margin: 0 auto; padding: 20px; }
.header { background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(10px); padding: 15px 20px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); display: flex; align-items: center; justify-content: space-between; }
.header a { text-decoration: none; color: #6366f1; font-weight: 800; }
h1, h2 { color: #2c3e50; }
input, button { padding: 15px; box-sizing: border-box; border-radius: 8px; border: 1px solid #ccc; font-size: 16px; font-family: inherit; }
button { background: linear-gradient(135deg, #6366f1, #8b5cf6); color: white; border: none; font-weight: 700; cursor: pointer; border-radius: 12px; box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3); transition: all 0.3s ease; }
button:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4); filter: brightness(1.1); }
#login-container { text-align: center; margin-top: 50px; }
.room-card { background: white; margin-bottom: 25px; padding: 25px; border-radius: 20px; box-shadow: 0 10px 30px rgba(99, 102, 241, 0.08); transition: transform 0.3s ease; border: 1px solid rgba(255,255,255,0.6); }
.room-card:hover { transform: translateY(-3px); }
.room-card h3 { margin-top: 0; }
.room-card .code { font-family: monospace; background: #e9ecef; padding: 2px 6px; border-radius: 4px; }
.room-card .links { display: flex; flex-direction: column; gap: 10px; margin-top: 15px; }
.room-card .links a { display: block; padding: 12px 15px; background: #f8fafc; border-radius: 12px; text-decoration: none; color: #4f46e5; font-weight: 800; font-size: 20px; border: 1px solid #e2e8f0; transition: all 0.2s; }
.room-card .links a:hover { background: #e0e7ff; transform: translateX(5px); }
.delete-room-btn {
    background-color: #dc3545;
    color: white;
    border: none;
    padding: 5px 10px;
    font-size: 12px;
    border-radius: 5px;
    cursor: pointer;
    float: right;
}

/* --- Dashboard --- */
.dashboard-container { display: flex; gap: 15px; margin-bottom: 25px; flex-wrap: wrap; }
.dash-box { flex: 1; min-width: 150px; background: white; padding: 20px; border-radius: 16px; text-align: center; box-shadow: 0 10px 30px rgba(99, 102, 241, 0.1); border: 2px solid #e0e7ff; cursor: default; }
.dash-box h3 { margin: 0; font-size: 42px; color: #6366f1; font-weight: 900; }
.dash-box p { margin: 5px 0 0 0; font-size: 14px; color: #64748b; text-transform: uppercase; letter-spacing: 1px; font-weight: 800; }

/* --- Modal --- */
.modal {
    display: none; position: fixed; z-index: 1001; left: 0; top: 0;
    width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.6);
}
.modal-content {
    background-color: #fefefe; margin: 10% auto; padding: 30px; border: 1px solid #888;
    width: 85%; max-width: 500px; border-radius: 16px; position: relative; box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.close-btn {
    color: #aaa; position: absolute; top: 15px; right: 20px;
    font-size: 30px; font-weight: bold; cursor: pointer; transition: 0.2s;
}
.close-btn:hover { color: #333; }