:root {
    /* Light Mode - matching React version */
    --primary: #dc2626;
    --primary-hover: #b91c1c;
    --secondary: #16a34a;
    --background: #ffffff;
    --card-bg: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border: #e5e5e5;
    --accent: #fbbf24;
    --success: #22c55e;
    --error: #ef4444;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 30px rgba(251, 191, 36, 0.3);
    --shadow-festive: 0 10px 40px -10px rgba(220, 38, 38, 0.4);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header with gradient */
.event-header {
    background: linear-gradient(to right, 
        rgba(220, 38, 38, 0.1), 
        rgba(22, 163, 74, 0.1), 
        rgba(220, 38, 38, 0.1)
    );
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0;
}

.header-content-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.logo-title-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-main {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent);
    box-shadow: var(--shadow-glow);
}

.title-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.main-title {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
    margin: 0;
}

.subtitle-accent {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--accent);
    margin: 0;
}

/* Event Details Section */
.event-details {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 2rem 0;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 64rem;
    margin: 0 auto;
}

.detail-card {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: 0.5rem;
    background-color: var(--background);
    border: 1px solid var(--border);
}

.detail-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.detail-content {
    flex: 1;
}

.detail-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.detail-text {
    font-size: 1rem;
    color: var(--text-primary);
    margin: 0.125rem 0;
}

/* Main Content */
main.main-content {
    padding: 3rem 0;
}

/* Card */
.card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-festive);
    padding: 2rem;
    margin: 0 auto;
    max-width: 42rem;
    border: 1px solid var(--border);
}

.card h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Form */
.registration-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input[type="text"],
.form-group input[type="tel"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
    background-color: var(--background);
    color: var(--text-primary);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 1.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: normal;
    color: var(--text-primary);
}

.radio-label input[type="radio"] {
    cursor: pointer;
    width: 1rem;
    height: 1rem;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
    background-color: #4b5563;
    cursor: not-allowed;
    transform: none;
    opacity: 0.5;
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

/* Contact Info */
.contact-info {
    margin-top: 2rem;
    text-align: center;
    padding: 1.5rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
}

.contact-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.contact-details {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0.5rem 0 0;
}

/* Admin Access Section */
.admin-access-section {
    padding: 2rem 0;
    text-align: center;
    margin-top: 2rem;
}

.btn-admin {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--text-secondary);
    color: var(--background);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.btn-admin:hover {
    background: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.admin-icon {
    font-size: 1.2rem;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    background-color: var(--card-bg);
    margin-top: 3rem;
    padding: 1.5rem 0;
}

.footer-text {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Admin Login Page */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
}

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

.logo {
    width: 120px;
    height: auto;
    margin-bottom: 20px;
}

.header h1 {
    color: var(--primary);
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.login-card {
    max-width: 400px;
    margin: 100px auto;
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
}

.back-link:hover {
    color: var(--primary);
}

/* Dashboard Styles */
.dashboard .header {
    margin-bottom: 30px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.stat-card h3 {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.stat-number {
    color: var(--primary);
    font-size: 2.5rem;
    font-weight: bold;
    margin: 0;
}

.actions-bar {
    margin-bottom: 20px;
    display: flex;
    justify-content: flex-end;
}

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
    width: 100%;
}

.card {
    width: 100%;
    max-width: 100%;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
}

th {
    background: var(--background);
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
}

td {
    padding: 15px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

tr:hover {
    background: rgba(220, 38, 38, 0.05);
}

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

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 10px;
}

.btn-edit,
.btn-delete {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-edit:hover {
    background-color: #15803d;
}

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

.btn-delete:hover {
    background-color: #dc2626;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-content form {
    padding: 20px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: 8px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s;
    z-index: 2000;
    max-width: 400px;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

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

.toast.error {
    background-color: var(--error);
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .main-title {
        font-size: 1.5rem;
    }
    
    .subtitle-accent {
        font-size: 1rem;
    }
    
    .logo-main {
        width: 72px;
        height: 72px;
    }
    
    .logo-title-group {
        flex-direction: column;
        text-align: center;
    }

    .card {
        padding: 1.5rem;
    }

    .card h2 {
        font-size: 1.25rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .details-grid {
        grid-template-columns: 1fr;
    }

    .radio-group {
        flex-direction: column;
        gap: 0.75rem;
    }

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

    table {
        font-size: 0.85rem;
    }

    th, td {
        padding: 10px;
    }
}