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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

/* Navbar */
.navbar {
    background-color: #03c75a;
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.navbar h1 {
    font-size: 24px;
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-links a:hover {
    background-color: rgba(255,255,255,0.1);
}

.nav-links span {
    font-weight: 600;
}

/* Alerts */
.alert {
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
    border-left: 4px solid;
}

.alert-success {
    background-color: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffc107;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #17a2b8;
    color: #0c5460;
}

/* Dashboard */
.dashboard {
    margin-top: 20px;
}

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

.stat-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    color: #666;
    font-size: 16px;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    color: #03c75a;
}

/* Table */
table {
    width: 100%;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin: 20px 0;
    border-collapse: collapse;
    overflow: hidden;
}

thead {
    background-color: #f8f9fa;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

th {
    font-weight: 600;
    color: #495057;
    font-size: 14px;
    text-transform: uppercase;
}

tbody tr:hover {
    background-color: #f8f9fa;
}

.status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    background-color: #03c75a;
    color: white;
    font-size: 12px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #03c75a;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #02b350;
}

.btn-primary {
    background-color: #03c75a;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-block {
    width: 100%;
    display: block;
}

/* Search Box */
.search-box {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin: 20px 0;
}

.search-box form {
    display: flex;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin: 30px 0;
}

.pagination a,
.pagination span {
    padding: 8px 12px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    text-decoration: none;
    color: #333;
}

.pagination a:hover {
    background-color: #03c75a;
    color: white;
    border-color: #03c75a;
}

.pagination .current {
    background-color: #03c75a;
    color: white;
    border-color: #03c75a;
}

/* 로그인 페이지 */
.login-page {
    background: #f8f9fa;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    margin: 20px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 20px;
    color: #333;
    margin-bottom: 8px;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    background: white;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #007bff;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-primary {
    background: #000000;
    color: white;
    width: 100%;
    border: 2px solid #000000;
}

.btn-primary:hover {
    background: #ffffff;
    color: #000000;
}

.loading {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    z-index: 999999;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: none; /* 전환 효과 제거로 즉시 표시 */
}

.loading.show {
    display: flex !important;
    opacity: 1 !important;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    margin-left: 15px;
    font-size: 16px;
    color: #333;
    font-weight: 500;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: #999;
    font-size: 12px;
}

/* 알림 */
.alert {
    padding: 12px 16px;
    margin-bottom: 15px;
    border-radius: 4px;
    font-size: 14px;
    border-left: 4px solid;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left-color: #28a745;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-left-color: #dc3545;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-left-color: #17a2b8;
}

/* Recent Bookings */
.recent-bookings {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.recent-bookings h2 {
    margin-bottom: 20px;
    color: #333;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

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

    table {
        font-size: 12px;
        box-shadow: none;
    }

    th, td {
        padding: 8px;
    }

    .search-box form {
        flex-direction: column;
    }
}