/* ===== BASE STYLES ===== */
:root {
    /* Light Color Palette */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --bg-hover: #f1f3f4;
    
    /* Text Colors */
    --text-primary: #1a1a1a;
    --text-secondary: #5f6368;
    --text-muted: #80868b;
    --text-light: #ffffff;
    
    /* Brand Colors */
    --color-primary: #4285f4;
    --color-primary-dark: #3367d6;
    --color-success: #34a853;
    --color-warning: #f9ab00;
    --color-danger: #ea4335;
    --color-info: #5f6368;
    
    /* Semantic Colors */
    --border-color: #dadce0;
    --border-light: #e8eaed;
    --shadow-sm: 0 1px 2px rgba(60, 64, 67, 0.1);
    --shadow-md: 0 2px 6px rgba(60, 64, 67, 0.15);
    --shadow-lg: 0 4px 12px rgba(60, 64, 67, 0.1);
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    gap: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.logo i {
    font-size: 24px;
    color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-primary), var(--color-success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Navigation */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-sm);
    flex: 1;
    justify-content: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-size: 14px;
    font-weight: 500;
    position: relative;
}

.nav-link:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.nav-link.active {
    background-color: var(--color-primary);
    color: var(--text-light);
}

.nav-link.active i {
    color: var(--text-light);
}

.nav-link i {
    font-size: 16px;
    color: var(--text-muted);
}

.nav-link.active .badge {
    background-color: var(--text-light);
    color: var(--color-primary);
}

.nav-action {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.nav-action:hover {
    background-color: var(--bg-hover);
    border-color: var(--border-color);
}

.nav-action.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.nav-divider {
    width: 1px;
    background-color: var(--border-color);
    margin: 0 var(--space-sm);
}

.badge {
    background-color: var(--color-danger);
    color: var(--text-light);
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
    margin-left: var(--space-xs);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.api-status {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 13px;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.status-dot.connected {
    background-color: var(--color-success);
    box-shadow: 0 0 0 2px rgba(52, 168, 83, 0.2);
}

.status-dot.disconnected {
    background-color: var(--color-danger);
    box-shadow: 0 0 0 2px rgba(234, 67, 53, 0.2);
}

/* ===== MAIN CONTENT ===== */
main {
    padding: var(--space-xl) 0;
    min-height: calc(100vh - 140px);
}

.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.section-header {
    margin-bottom: var(--space-xl);
}

.section-header h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 14px;
}

.section-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

/* ===== STATS GRID ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.stat-primary::before { background-color: var(--color-primary); }
.stat-success::before { background-color: var(--color-success); }
.stat-warning::before { background-color: var(--color-warning); }
.stat-danger::before { background-color: var(--color-danger); }

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.stat-primary .stat-icon { background-color: rgba(66, 133, 244, 0.1); color: var(--color-primary); }
.stat-success .stat-icon { background-color: rgba(52, 168, 83, 0.1); color: var(--color-success); }
.stat-warning .stat-icon { background-color: rgba(249, 171, 0, 0.1); color: var(--color-warning); }
.stat-danger .stat-icon { background-color: rgba(234, 67, 53, 0.1); color: var(--color-danger); }

.stat-content {
    flex: 1;
}

.stat-content h3 {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-number {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    line-height: 1;
}

.stat-desc {
    font-size: 13px;
    color: var(--text-muted);
}

/* ===== CARDS ===== */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

.card-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: var(--space-lg);
}

/* ===== CONTENT GRID ===== */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

/* ===== TABLES ===== */
.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

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

th {
    padding: var(--space-md);
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    font-size: 14px;
    vertical-align: middle;
}

tbody tr {
    transition: background-color var(--transition-fast);
}

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

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

.table-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--border-light);
    background-color: var(--bg-secondary);
}

.table-info {
    color: var(--text-muted);
    font-size: 13px;
}

/* ===== BUTTONS ===== */
.btn-primary, .btn-secondary, .btn-danger, .btn-success, .btn-warning, .btn-text {
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: inherit;
    height: 40px;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-success:hover {
    background-color: #2e8b47;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

.btn-warning:hover {
    background-color: #e09c00;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

.btn-danger:hover {
    background-color: #d23c2e;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 8px;
}

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

.btn-action {
    width: 100%;
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.btn-action:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

/* ===== FORMS ===== */
.modern-form {
    max-width: 800px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
    font-size: 14px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-light);
}

.error-message {
    color: var(--color-danger);
    font-size: 12px;
    margin-top: 4px;
    min-height: 16px;
}

.form-message {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-top: var(--space-lg);
    font-size: 14px;
    display: none;
    border: 1px solid transparent;
}

.form-message.success {
    background-color: rgba(52, 168, 83, 0.1);
    color: var(--color-success);
    border-color: rgba(52, 168, 83, 0.2);
    display: block;
}

.form-message.error {
    background-color: rgba(234, 67, 53, 0.1);
    color: var(--color-danger);
    border-color: rgba(234, 67, 53, 0.2);
    display: block;
}

/* ===== SEARCH & FILTER ===== */
.search-box {
    position: relative;
    width: 300px;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

.search-box input {
    width: 100%;
    padding: 10px 12px 10px 36px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.1);
}

.filter-tabs {
    display: flex;
    gap: var(--space-xs);
    background-color: var(--bg-secondary);
    padding: var(--space-xs);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.filter-btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-primary);
    background-color: var(--bg-hover);
}

.filter-btn.active {
    background-color: var(--bg-card);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* ===== ACTIVITY LIST ===== */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.activity-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

.activity-item:hover {
    border-color: var(--color-primary);
    background-color: var(--bg-hover);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    background-color: var(--bg-card);
    color: var(--text-primary);
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-content p {
    font-size: 14px;
    margin-bottom: 2px;
    color: var(--text-primary);
}

.activity-time {
    font-size: 12px;
    color: var(--text-muted);
}

/* ===== QUICK ACTIONS ===== */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

/* ===== MODALS ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(2px);
}

.modal.active {
    display: flex;
    animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
}

.warning-icon {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.warning-icon i {
    font-size: 48px;
    color: var(--color-warning);
}

.warning-text {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: var(--space-sm);
    text-align: center;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    min-width: 280px;
    max-width: 360px;
    animation: toastSlideIn 0.2s ease;
    transform: translateX(0);
    border-left: 4px solid;
}

@keyframes toastSlideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.toast.success {
    border-left-color: var(--color-success);
}

.toast.error {
    border-left-color: var(--color-danger);
}

.toast.warning {
    border-left-color: var(--color-warning);
}

.toast.info {
    border-left-color: var(--color-primary);
}

.toast-icon {
    font-size: 18px;
}

.toast.success .toast-icon { color: var(--color-success); }
.toast.error .toast-icon { color: var(--color-danger); }
.toast.warning .toast-icon { color: var(--color-warning); }
.toast.info .toast-icon { color: var(--color-primary); }

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 2px;
    color: var(--text-primary);
}

.toast-message {
    font-size: 13px;
    color: var(--text-secondary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.toast-close:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

/* ===== STATUS BADGES ===== */
.status-badge {
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.status-active {
    background-color: rgba(52, 168, 83, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(52, 168, 83, 0.2);
}

.status-overdue {
    background-color: rgba(234, 67, 53, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(234, 67, 53, 0.2);
}

.status-returned {
    background-color: rgba(66, 133, 244, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(66, 133, 244, 0.2);
}

/* ===== ACTION BUTTONS ===== */
.action-buttons {
    display: flex;
    gap: var(--space-xs);
}

.action-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 14px;
}

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

.action-btn.view:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.action-btn.edit:hover {
    color: var(--color-warning);
    border-color: var(--color-warning);
}

.action-btn.delete:hover {
    color: var(--color-danger);
    border-color: var(--color-danger);
}

.action-btn.return:hover {
    color: var(--color-success);
    border-color: var(--color-success);
}

/* ===== FOOTER ===== */
footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-lg) 0;
    text-align: center;
}

footer p {
    color: var(--text-muted);
    font-size: 14px;
}

#api-url {
    color: var(--color-primary);
    font-weight: 500;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .header-container {
        flex-wrap: wrap;
        gap: var(--space-md);
    }
    
    .nav-menu {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        padding: var(--space-xs) 0;
    }
    
    .nav-link span {
        display: none;
    }
    
    .nav-link i {
        margin-right: 0;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-sm);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .section-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        width: 100%;
    }
    
    .filter-tabs {
        overflow-x: auto;
        justify-content: flex-start;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--space-md);
    }
}

@media (max-width: 480px) {
    .form-actions {
        flex-direction: column;
    }
    
    .btn-primary, .btn-secondary, .btn-danger, .btn-success, .btn-warning {
        width: 100%;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
}

/* ===== UTILITY CLASSES ===== */
.hidden { display: none; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-xs); }
.gap-4 { gap: var(--space-sm); }
.gap-6 { gap: var(--space-md); }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* ===== LOADING STATES ===== */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}