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

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --background: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
}

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;
    color: var(--text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.hidden {
    display: none !important;
}

#auth-section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.auth-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 450px;
}

.auth-card h1 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary);
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    border: none;
    background: var(--background);
    cursor: pointer;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
}

.tab-btn.active {
    background: var(--primary);
    color: white;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.auth-form h2 {
    margin-bottom: 10px;
    color: var(--text);
}

.auth-form input,
.auth-form textarea {
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: border 0.3s;
}

.auth-form input:focus,
.auth-form textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.auth-form textarea {
    resize: vertical;
    min-height: 80px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn-secondary:hover {
    background: #475569;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-small {
    padding: 8px 16px;
    font-size: 12px;
}

.header {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.header h1 {
    color: var(--primary);
    font-size: 24px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info span {
    font-weight: 600;
    color: var(--text);
}

.nav {
    background: white;
    border-bottom: 2px solid var(--border);
}

.nav .container {
    display: flex;
    gap: 10px;
    padding: 15px 20px;
}

.nav-btn {
    padding: 10px 20px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-light);
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.nav-btn.active,
.nav-btn:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

#main-section {
    background: var(--background);
    min-height: 100vh;
}

.main-content {
    padding: 30px 20px;
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.view-header h2 {
    color: var(--text);
}

.filters {
    display: flex;
    gap: 10px;
}

.filters input,
.filters select {
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.package-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.package-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.package-card h3 {
    color: var(--primary);
    margin-bottom: 10px;
}

.package-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 15px 0;
    color: var(--text-light);
    font-size: 14px;
}

.package-price {
    font-size: 24px;
    font-weight: bold;
    color: var(--success);
    margin: 10px 0;
}

.package-actions {
    display: flex;
    gap: 10px;
}

#bookings-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.booking-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.booking-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.booking-id {
    font-weight: bold;
    color: var(--primary);
}

.status-badge {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.status-pending {
    background: #fef3c7;
    color: #92400e;
}

.status-confirmed {
    background: #d1fae5;
    color: #065f46;
}

.status-paid {
    background: #dcfce7;
    color: #166534;
}

.status-unpaid {
    background: #fee2e2;
    color: #991b1b;
}

.booking-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
}

.booking-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

#profile-content {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.profile-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.profile-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.profile-field label {
    font-weight: 600;
    color: var(--text-light);
    font-size: 12px;
    text-transform: uppercase;
}

.profile-field span {
    color: var(--text);
    font-size: 16px;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: 12px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-light);
}

.close:hover {
    color: var(--text);
}

.modal-content h2 {
    margin-bottom: 20px;
    color: var(--primary);
}

.modal-content form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.modal-content label {
    font-weight: 600;
    color: var(--text);
}

.modal-content input,
.modal-content select {
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

#booking-details,
#payment-details {
    background: var(--background);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .packages-grid {
        grid-template-columns: 1fr;
    }

    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .filters {
        flex-direction: column;
        width: 100%;
    }

    .filters input,
    .filters select {
        width: 100%;
    }

    .nav .container {
        flex-wrap: wrap;
    }
}

.message {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

.message-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.message-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.message-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state h3 {
    margin-bottom: 10px;
    color: var(--text);
}