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

body {
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: white;
    padding: 15px;
}

.container {
    max-width: 500px;
    margin: auto;
}

.header {
    text-align: center;
    margin-bottom: 20px;
}

.card {
    background: #1e293b;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 15px;
}

input {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    border-radius: 8px;
    border: none;
    background: #334155;
    color: white;
}

button {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    border: none;
    border-radius: 8px;
    background: #22c55e;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background: #16a34a;
}

a {
    text-decoration: none;
}

video {
    width: 100%;
    border-radius: 10px;
    margin-top: 10px;
}

.timer {
    text-align: center;
    color: #facc15;
    font-weight: bold;
    margin-top: 10px;
}

.success {
    color: #22c55e;
    text-align: center;
}

.error {
    color: red;
    text-align: center;
}button.secondary {
    background: #334155;
}

button.secondary:hover {
    background: #1e293b;
}