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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #f5f5f5;
}

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

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo h1 {
    font-size: 1.5rem;
}

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

.logout-btn {
    background: #ff4757;
    color: white;
    padding: 8px 20px;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
}

.logout-btn:hover {
    background: #ff3742;
}

main {
    padding: 30px 0;
    min-height: calc(100vh - 70px);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

th {
    background-color: #f8f9fa;
    font-weight: 600;
}

tr:hover {
    background-color: #f9f9f9;
}

.status-pending {
    color: #ffa502;
    font-weight: bold;
}

.status-approved {
    color: #2ed573;
    font-weight: bold;
}

.status-rejected {
    color: #ff4757;
    font-weight: bold;
}

.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-form {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.auth-form h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: transform 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
}

.error-message {
    background: #ffeaea;
    color: #ff4757;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 20px;
    border-left: 4px solid #ff4757;
}

.success-message {
    background: #eaffea;
    color: #2ed573;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 20px;
    border-left: 4px solid #2ed573;
}

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

.record-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.filters {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.filter-row {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    color: #666;
    border-top: 1px solid #eee;
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    table {
        font-size: 14px;
    }
    
    th, td {
        padding: 10px;
    }
    
    .auth-form {
        padding: 20px;
        margin: 20px;
    }
}

.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.stat-card {
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    margin: 10px 0 0;
}

.btn-small {
    padding: 5px 10px;
    font-size: 14px;
    border: none;
    border-radius: 4px;
    color: white;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.btn-small:hover {
    opacity: 0.9;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
}

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

@media (max-width: 768px) {
    table {
        display: block;
        overflow-x: auto;
    }
    
    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    footer .container {
        flex-direction: column;
        gap: 10px;
    }
}