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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #2196F3;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

h1 {
    color: #333;
    font-size: 24px;
    margin-bottom: 10px;
    text-align: center;
}

.desc {
    color: #666;
    text-align: center;
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    color: #555;
    margin-bottom: 5px;
    font-size: 14px;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.input-group input:focus,
.input-group select:focus {
    border-color: #2196F3;
    outline: none;
}

#getBtn {
    width: 100%;
    padding: 14px;
    background: #2196F3;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}

#getBtn:hover {
    background: #1976D2;
}

#getBtn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.result {
    margin-top: 20px;
    padding: 20px;
    background: #f5f5f5;
    border-radius: 12px;
}

.result-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    font-size: 14px;
}

.result-header strong.live {
    color: #28a745;
}

.m3u8-box label {
    display: block;
    color: #555;
    margin-bottom: 5px;
    font-size: 14px;
}

.m3u8-box textarea {
    width: 100%;
    height: 100px;
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    resize: vertical;
}

.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.btn-group button {
    padding: 10px 20px;
    background: #2196F3;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
}

.btn-group button:hover {
    background: #1976D2;
}

.error {
    margin-top: 15px;
    padding: 15px;
    background: #fee;
    border: 1px solid #fcc;
    border-radius: 8px;
    color: #c00;
}

.vlc-tip {
    margin-top: 15px;
    padding: 15px;
    background: #e3f2fd;
    border-radius: 8px;
}

.vlc-tip h3 {
    color: #333;
    margin-bottom: 10px;
}

.vlc-tip ol {
    margin-left: 20px;
    color: #555;
}

.vlc-tip li {
    margin-bottom: 5px;
}

.vlc-tip p {
    margin-top: 10px;
    color: #666;
}