/* ===== CSS Variables ===== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary: #64748b;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #dc2626;
    --bg: #f8fafc;
    --bg-white: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --radius: 8px;
    --radius-sm: 4px;
    --transition: all 0.2s ease;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

/* ===== Navbar ===== */
header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
    height: 60px;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.nav-menu li a {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text);
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu li a:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.search-form {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.search-form input {
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    width: 180px;
    transition: var(--transition);
}

.search-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-form button {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    padding: 0.4rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* ===== Main Content ===== */
main {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    width: 100%;
}

/* ===== Page Header ===== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

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

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

.btn-secondary:hover {
    background: #475569;
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-outline:hover {
    background: var(--bg);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}

/* ===== Cards ===== */
.card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    font-size: 1rem;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

/* ===== Markdown Content ===== */
.markdown-content {
    font-size: 0.9rem;
    line-height: 1.6;
}

.markdown-content > *:first-child {
    margin-top: 0;
}

.markdown-content > *:last-child {
    margin-bottom: 0;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    margin: 0.75rem 0 0.5rem;
}

.markdown-content p,
.markdown-content ul,
.markdown-content ol,
.markdown-content pre,
.markdown-content table,
.markdown-content blockquote {
    margin: 0.5rem 0;
}

.markdown-content code {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.1rem 0.3rem;
}

.markdown-content pre {
    overflow-x: auto;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem;
}

.markdown-content pre code {
    border: none;
    padding: 0;
    background: transparent;
}

/* ===== Grid Layouts ===== */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ===== Tables ===== */
.table-container {
    overflow-x: auto;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

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

thead {
    background: var(--bg);
}

th {
    padding: 0.875rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
    border-bottom: 2px solid var(--border);
}

td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

tbody tr:hover {
    background: var(--bg);
}

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

/* ===== Badges ===== */
.badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-success {
    background: #dcfce7;
    color: var(--success);
}

.badge-warning {
    background: #fef3c7;
    color: var(--warning);
}

/* ===== Alerts ===== */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.alert-info {
    background: var(--primary-light);
    color: var(--primary-dark);
    border-left: 4px solid var(--primary);
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border-left: 4px solid var(--success);
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

/* ===== Detail View ===== */
.detail-section {
    margin-bottom: 2rem;
}

.detail-section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
    color: var(--text);
}

.detail-field {
    display: flex;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.detail-field:last-child {
    border-bottom: none;
}

.detail-label {
    font-weight: 600;
    min-width: 120px;
    color: var(--text-light);
    font-size: 0.875rem;
}

.detail-value {
    flex: 1;
    color: var(--text);
}

/* ===== Component List Items ===== */
.component-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.component-item:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.component-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.component-info {
    flex: 1;
    min-width: 0;
}

.component-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.component-info p {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--primary);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: var(--text-light);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text);
}

/* ===== Footer ===== */
footer {
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    padding: 1.5rem;
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .search-form input {
        width: 140px;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .detail-field {
        flex-direction: column;
        gap: 0.25rem;
    }

    .detail-label {
        min-width: auto;
    }

    main {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0 1rem;
    }

    .search-form input {
        width: 100px;
    }

    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    animation: fadeIn 0.3s ease;
}

/* ===== Print Styles ===== */
@media print {
    header, footer, .btn, .search-form, .nav-toggle {
        display: none !important;
    }
    
    main {
        padding: 0;
        max-width: none;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* ===== Login page ===== */
.login-page {
    background: var(--bg);
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-box {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
    max-width: 420px;
    width: 100%;
    text-align: center;
}

.login-box h1 {
    margin-bottom: 0.25rem;
}

.login-subtitle {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.login-box p {
    margin-bottom: 1.5rem;
}

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

/* ===== Navbar user ===== */
.nav-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.nav-user-name {
    color: var(--text-light);
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-logout {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.nav-logout:hover {
    text-decoration: underline;
}