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

:root {
    --primary-color: #0066cc;
    --primary-hover: #0052a3;
    --danger-color: #dc3545;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --light-gray: #f8f9fa;
    --border-color: #dee2e6;
    --text-color: #333;
    --text-light: #666;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    color: var(--text-color);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    padding: 20px 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: white;
    padding: 20px 0;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

header h1 {
    font-size: 28px;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 5px;
}

header p {
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
}

/* Form Container */
.form-container {
    background: white;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

/* Form Group */
.form-group {
    margin-bottom: 25px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
}

.form-group label .required {
    color: var(--danger-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    max-height: 400px;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group input[type="text"]::placeholder,
.form-group textarea::placeholder,
.form-group input[type="email"]::placeholder,
.form-group input[type="tel"]::placeholder {
    color: #999;
}

/* Checkbox and Radio Container */
.checkbox-container,
.radio-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
}

.checkbox-item,
.radio-item {
    display: flex;
    align-items: center;
}

.checkbox-item input[type="checkbox"],
.radio-item input[type="radio"] {
    margin-right: 8px;
    cursor: pointer;
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.checkbox-item label,
.radio-item label {
    cursor: pointer;
    margin: 0;
    font-weight: normal;
}

/* Error Messages */
.error-messages {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    display: none;
}

.error-messages.show {
    display: block;
}

.error-messages ul {
    list-style: none;
    margin: 0;
}

.error-messages li {
    padding: 5px 0;
    font-size: 14px;
}

.error-messages li:before {
    content: "● ";
    margin-right: 8px;
}

/* Success Message */
.success-message {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    display: none;
    text-align: center;
}

.success-message.show {
    display: block;
}

/* Buttons */
.form-buttons {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

button {
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.btn-submit {
    background: var(--primary-color);
    color: white;
    flex-grow: 1;
}

.btn-submit:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.btn-reset {
    background: var(--light-gray);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-reset:hover {
    background: white;
    border-color: var(--text-color);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Cascading Select */
.cascading-selects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.cascading-selects .form-group {
    margin-bottom: 0;
}

/* Loading and Status */
.loading {
    display: none;
    text-align: center;
    padding: 20px;
    color: var(--text-light);
}

.loading.show {
    display: block;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 10px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Validation Feedback */
.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select {
    border-color: var(--danger-color);
}

.form-group.has-success input,
.form-group.has-success textarea,
.form-group.has-success select {
    border-color: var(--success-color);
}

.form-feedback {
    font-size: 12px;
    margin-top: 5px;
    display: none;
}

.form-feedback.error {
    color: var(--danger-color);
}

.form-feedback.success {
    color: var(--success-color);
}

.form-feedback.show {
    display: block;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .form-container {
        padding: 25px 20px;
    }

    header h1 {
        font-size: 24px;
    }

    .cascading-selects {
        grid-template-columns: 1fr;
    }

    .form-buttons {
        flex-direction: column;
    }

    .btn-submit,
    .btn-reset {
        width: 100%;
        min-width: unset;
    }

    .checkbox-container,
    .radio-container {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px 0;
    }

    .container {
        padding: 0 15px;
    }

    .form-container {
        padding: 20px 15px;
        border-radius: 8px;
    }

    header h1 {
        font-size: 20px;
    }

    header p {
        font-size: 13px;
    }

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

    .checkbox-container,
    .radio-container {
        grid-template-columns: 1fr;
    }
}

/* Admin List Styles */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.admin-header a {
    background: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.3s ease;
}

.admin-header a:hover {
    background: var(--primary-hover);
}

.table-responsive {
    overflow-x: auto;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th {
    background: var(--light-gray);
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
    border-bottom: 2px solid var(--border-color);
}

table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

table tr:last-child td {
    border-bottom: none;
}

table tr:hover {
    background: var(--light-gray);
}

.status-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-pending {
    background: #fff3cd;
    color: #856404;
}

.status-processing {
    background: #cce5ff;
    color: #004085;
}

.status-resolved {
    background: #d4edda;
    color: #155724;
}

.status-rejected {
    background: #f8d7da;
    color: #721c24;
}

.action-buttons {
    display: flex;
    gap: 10px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
    min-width: unset;
}

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

.btn-view:hover {
    background: var(--primary-hover);
}

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

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

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.pagination a,
.pagination span {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-color);
    font-size: 14px;
}

.pagination a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .disabled {
    color: #999;
    cursor: not-allowed;
    opacity: 0.5;
}