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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px 20px;
    text-align: center;
}

header h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 14px;
    opacity: 0.9;
}

.tabs {
    display: flex;
    background: #f5f5f5;
    border-bottom: 1px solid #ddd;
}

.tab-button {
    flex: 1;
    padding: 15px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #666;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

.tab-button:hover {
    background: #e8e8e8;
}

.tab-button.active {
    color: #667eea;
    border-bottom-color: #667eea;
    background: white;
}

.tab-content {
    display: none;
    padding: 20px;
}

.tab-content.active {
    display: block;
}

.card {
    background: #f9f9f9;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid #e0e0e0;
}

.card h2 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 1;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 100%;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.status-display {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 15px;
    background: #f0f0f0;
    border-left: 4px solid #667eea;
}

.status-text {
    font-weight: 500;
    color: #333;
}

.status-display.connected {
    background: #d4edda;
    border-left-color: #28a745;
}

.status-display.error {
    background: #f8d7da;
    border-left-color: #dc3545;
}

.logs-display {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 15px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.log-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.log-controls .btn {
    width: auto;
}

.dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.dialog-content {
    background: white;
    border-radius: 12px;
    padding: 20px;
    max-width: 400px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.dialog-content h3 {
    margin-bottom: 15px;
}

.wifi-list {
    margin-bottom: 15px;
}

.wifi-item {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.wifi-item:hover {
    background: #f0f0f0;
    border-color: #667eea;
}

.wifi-item-name {
    font-weight: 500;
    color: #333;
}

.wifi-item-info {
    font-size: 12px;
    color: #666;
    margin-top: 4px;
}

@media (max-width: 600px) {
    .container {
        border-radius: 0;
        min-height: 100vh;
    }

    header {
        padding: 20px;
    }

    header h1 {
        font-size: 24px;
    }

    .tab-content {
        padding: 15px;
    }
}