:root {
    --primary: #D4AF37;
    --secondary: #003366;
    --light: #f8f9fa;
    --dark: #343a40;
    --gray: #6c757d;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    line-height: 1.6;
    color: var(--dark);
    background-color: #f5f5f5;
    overscroll-behavior: none;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
}

.admin-panel {
    padding: clamp(60px, 15vw, 80px) 0;
    background-color: #f5f5f5;
    min-height: 100vh;
}

.admin-login, .admin-section {
    max-width: 800px;
    margin: 50px auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.btn {
    display: inline-block;
    background-color: var(--primary);
    color: var(--secondary);
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn:hover {
    background-color: #c19b2e;
    transform: translateY(-2px);
}

.error {
    color: #dc3545;
    margin-bottom: 15px;
    text-align: center;
}

.document-preview {
    margin-top: 20px;
    padding: 20px;
    background: var(--light);
    border-radius: 8px;
}

.document-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.document-table th, .document-table td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: left;
}

.document-table th {
    background-color: var(--secondary);
    color: white;
}

.document-table tr:nth-child(even) {
    background-color: var(--light);
}

.view-btn, .delete-btn {
    padding: 8px 15px;
    margin-right: 5px;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    .admin-login, .admin-section {
        margin: 20px;
        padding: 20px;
    }
    
    .document-table {
        display: block;
        overflow-x: auto;
    }
}

@media (max-width: 414px) {
    .container {
        padding: 0 10px;
    }
    
    .btn {
        padding: 10px 20px;
    }
}

@media (min-width: 375px) and (max-width: 430px) {
    /* iPhone 14/15/16 optimization */
    body {
        -webkit-text-size-adjust: none;
    }
}