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

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.card {
    background: white;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-card {
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.google-btn {
    background: #4285f4;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
}

.google-btn:hover {
    background: #3367d6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.nav {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.nav-btn {
    background: none;
    border: 2px solid #667eea;
    color: #667eea;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-btn.active {
    background: #667eea;
    color: white;
}

.nav-btn:hover {
    background: #667eea;
    color: white;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.time-slots {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.time-slot {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.time-slot:hover {
    border-color: #667eea;
    background: #f0f4ff;
}

.time-slot.selected {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.time-slot.unavailable {
    background: #e9ecef;
    color: #6c757d;
    cursor: not-allowed;
}

.btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

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

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

.link-display {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 16px;
    margin-top: 16px;
    word-break: break-all;
}

.copy-btn {
    background: #28a745;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 8px;
}

.copy-btn:hover {
    background: #218838;
}

.slot-list {
    display: grid;
    gap: 12px;
    margin-top: 20px;
}

.slot-item {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.slot-info {
    flex: 1;
}

.slot-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.slot-details {
    color: #6c757d;
    font-size: 14px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #667eea;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.logout-btn {
    background: #dc3545;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.logout-btn:hover {
    background: #c82333;
}

.booking-header {
    text-align: center;
    margin-bottom: 32px;
}

.booking-title {
    font-size: 28px;
    color: #333;
    margin-bottom: 8px;
}

.booking-subtitle {
    color: #6c757d;
}