/* ERP System Styles - Artbrain */
/* Blue Color Scheme - Enterprise Look */

:root {
    /* Primary Colors - Blue */
    --color-primary: #3b82f6;
    --color-primary-light: #60a5fa;
    --color-primary-dark: #2563eb;
    --color-primary-rgb: 59, 130, 246;

    /* Secondary - Indigo */
    --color-secondary: #6366f1;
    --color-secondary-light: #818cf8;
    --color-secondary-dark: #4f46e5;

    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #06b6d4;

    /* Dark Theme (Default) */
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-card: #1e293b;
    --color-bg-hover: #334155;
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-border: #334155;
    --color-border-light: #475569;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Sidebar Width */
    --sidebar-width: 280px;
    --sidebar-collapsed: 72px;
}

/* Light Theme */
[data-theme="light"] {
    --color-bg: #f8fafc;
    --color-bg-secondary: #f1f5f9;
    --color-bg-card: #ffffff;
    --color-bg-hover: #e2e8f0;
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --color-border-light: #cbd5e1;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* App Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar__logo {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--color-border);
}

.sidebar__logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.sidebar__logo-icon svg {
    width: 24px;
    height: 24px;
}

.sidebar__logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar__logo-version {
    font-size: 0.625rem;
    padding: 2px 6px;
    background: var(--color-bg-hover);
    border-radius: 4px;
    color: var(--color-text-muted);
    font-weight: 500;
}

.sidebar__nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
}

.sidebar__section {
    margin-bottom: 24px;
}

.sidebar__section-title {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: 0 12px;
    margin-bottom: 8px;
}

.sidebar__link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    position: relative;
}

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

.sidebar__link.active {
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.2), rgba(99, 102, 241, 0.1));
    color: var(--color-primary);
}

.sidebar__link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: var(--color-primary);
    border-radius: 0 3px 3px 0;
}

.sidebar__link-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar__link-badge {
    margin-left: auto;
    padding: 2px 8px;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 10px;
    background: var(--color-bg-hover);
    color: var(--color-text-secondary);
}

.sidebar__link-badge--primary {
    background: rgba(var(--color-primary-rgb), 0.2);
    color: var(--color-primary);
}

.sidebar__link-badge--success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-success);
}

.sidebar__link-badge--danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-danger);
}

.sidebar__link-badge--warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-warning);
}

/* Sidebar Footer */
.sidebar__footer {
    padding: 16px;
    border-top: 1px solid var(--color-border);
}

.sidebar__user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--color-bg-hover);
    border-radius: var(--radius-md);
}

.sidebar__user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

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

.sidebar__user-name {
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar__user-role {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ===== MAIN CONTENT ===== */
.main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header__left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header__title {
    font-size: 1.5rem;
    font-weight: 700;
}

.header__breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.header__breadcrumb a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.header__right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header__search {
    position: relative;
    width: 280px;
}

.header__search input {
    width: 100%;
    padding: 10px 16px 10px 42px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.header__search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

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

.header__search svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    width: 18px;
    height: 18px;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header__btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

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

.header__btn svg {
    width: 20px;
    height: 20px;
}

.header__btn-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background: var(--color-danger);
    border-radius: 50%;
    border: 2px solid var(--color-bg-secondary);
}

.mobile-menu-btn {
    display: none;
}

/* Content Area */
.content {
    flex: 1;
    padding: 24px;
}

/* ===== COMPONENTS ===== */

/* Cards */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card__header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card__title {
    font-size: 1.125rem;
    font-weight: 600;
}

.card__body {
    padding: 24px;
}

.card__footer {
    padding: 16px 24px;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: all var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card__icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-card__icon svg {
    width: 28px;
    height: 28px;
}

.stat-card__icon--primary {
    background: rgba(var(--color-primary-rgb), 0.15);
    color: var(--color-primary);
}

.stat-card__icon--success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.stat-card__icon--warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.stat-card__icon--danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.stat-card__icon--info {
    background: rgba(6, 182, 212, 0.15);
    color: var(--color-info);
}

.stat-card__icon--secondary {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-secondary);
}

.stat-card__content {
    flex: 1;
}

.stat-card__label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.stat-card__value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card__change {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 8px;
    padding: 2px 8px;
    border-radius: 4px;
}

.stat-card__change--positive {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.stat-card__change--negative {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* Charts */
.chart-container {
    height: 300px;
    position: relative;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    background: var(--color-bg);
}

.table tr:hover td {
    background: var(--color-bg-hover);
}

.table td {
    font-size: 0.875rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 6px;
}

.badge--primary {
    background: rgba(var(--color-primary-rgb), 0.15);
    color: var(--color-primary);
}

.badge--success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.badge--warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.badge--danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.badge--info {
    background: rgba(6, 182, 212, 0.15);
    color: var(--color-info);
}

.badge--secondary {
    background: var(--color-bg-hover);
    color: var(--color-text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    box-shadow: 0 2px 8px rgba(var(--color-primary-rgb), 0.3);
}

.btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.4);
}

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

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

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

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

.btn--sm {
    padding: 6px 12px;
    font-size: 0.75rem;
}

.btn--lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

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

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

/* Progress Bar */
.progress {
    height: 8px;
    background: var(--color-bg);
    border-radius: 4px;
    overflow: hidden;
}

.progress__bar {
    height: 100%;
    border-radius: 4px;
    transition: width var(--transition-normal);
}

.progress__bar--primary {
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.progress__bar--success {
    background: linear-gradient(90deg, var(--color-success), #34d399);
}

.progress__bar--warning {
    background: linear-gradient(90deg, var(--color-warning), #fbbf24);
}

.progress__bar--danger {
    background: linear-gradient(90deg, var(--color-danger), #f87171);
}

/* Avatar Group */
.avatar-group {
    display: flex;
    align-items: center;
}

.avatar-group__item {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--color-bg-card);
    margin-left: -8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.avatar-group__item:first-child {
    margin-left: 0;
}

.avatar-group__more {
    background: var(--color-bg-hover);
    color: var(--color-text-secondary);
}

/* Activity Timeline */
.activity-list {
    display: flex;
    flex-direction: column;
}

.activity-item {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-item__icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.activity-item__icon svg {
    width: 18px;
    height: 18px;
}

.activity-item__content {
    flex: 1;
}

.activity-item__title {
    font-weight: 500;
    margin-bottom: 4px;
}

.activity-item__time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Module Cards - ERP specific */
.module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.module-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.module-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.module-card__icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.module-card__icon svg {
    width: 32px;
    height: 32px;
}

.module-card__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.module-card__desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

.module-card__stats {
    display: flex;
    gap: 16px;
}

.module-card__stat {
    text-align: center;
}

.module-card__stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.module-card__stat-label {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

/* Quick Actions */
.quick-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.quick-action {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

.quick-action svg {
    width: 18px;
    height: 18px;
}

/* Finance Specific */
.finance-summary {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.finance-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
}

.finance-item__label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.finance-item__value {
    font-size: 1.125rem;
    font-weight: 700;
}

.finance-item__value--positive {
    color: var(--color-success);
}

.finance-item__value--negative {
    color: var(--color-danger);
}

/* Order Status Steps */
.order-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin: 24px 0;
}

.order-steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 40px;
    right: 40px;
    height: 2px;
    background: var(--color-border);
}

.order-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    position: relative;
    z-index: 1;
}

.order-step__icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    color: var(--color-text-muted);
}

.order-step__icon svg {
    width: 20px;
    height: 20px;
}

.order-step.completed .order-step__icon {
    background: var(--color-success);
    border-color: var(--color-success);
    color: white;
}

.order-step.active .order-step__icon {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.order-step__label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: center;
}

.order-step.completed .order-step__label,
.order-step.active .order-step__label {
    color: var(--color-text);
    font-weight: 500;
}

/* KPI Widget */
.kpi-widget {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-lg);
    padding: 24px;
    color: white;
}

.kpi-widget__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.kpi-widget__title {
    font-size: 0.875rem;
    opacity: 0.8;
}

.kpi-widget__icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.kpi-widget__icon svg {
    width: 24px;
    height: 24px;
}

.kpi-widget__value {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 8px;
}

.kpi-widget__change {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.875rem;
}

.kpi-widget__change svg {
    width: 16px;
    height: 16px;
}

/* Demo Banner */
.demo-banner {
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    color: white;
    padding: 10px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.875rem;
}

.demo-banner a {
    color: white;
    text-decoration: underline;
}

.demo-banner__close {
    margin-left: auto;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: white;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.demo-banner__close:hover {
    opacity: 1;
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--color-bg-hover);
    color: var(--color-text);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle__icon--moon {
    display: none;
}

[data-theme="light"] .theme-toggle__icon--sun {
    display: none;
}

[data-theme="light"] .theme-toggle__icon--moon {
    display: block;
}

/* Sidebar Overlay for Mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

/* Floating Back Button */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(var(--color-primary-rgb), 0.5), 0 0 0 0 rgba(var(--color-primary-rgb), 0.4);
    }
    50% {
        box-shadow: 0 6px 30px rgba(var(--color-primary-rgb), 0.6), 0 0 0 8px rgba(var(--color-primary-rgb), 0);
    }
}

.floating-back-btn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 28px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 20px rgba(var(--color-primary-rgb), 0.5);
    z-index: 1000;
    transition: all 0.3s ease;
    animation: pulse-glow 2s infinite;
    font-size: 1rem;
    font-weight: 600;
}

.floating-back-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 35px rgba(var(--color-primary-rgb), 0.6);
    animation: none;
}

.floating-back-btn:active {
    transform: translateY(-2px) scale(1.02);
}

.floating-back-btn svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    stroke-width: 2.5;
}

.floating-back-btn__text {
    font-weight: 600;
    font-size: 1rem;
    white-space: nowrap;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .module-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .sidebar-overlay.active {
        display: block;
    }

    .main {
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: flex;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-md);
        color: var(--color-text);
    }

    .mobile-menu-btn:hover {
        background: var(--color-bg-hover);
    }

    .mobile-menu-btn svg {
        width: 24px;
        height: 24px;
    }

    .header__search {
        display: none;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .module-grid {
        grid-template-columns: 1fr;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .content {
        padding: 16px;
    }

    .floating-back-btn {
        bottom: 20px;
        right: 20px;
        padding: 14px 22px;
    }

    .floating-back-btn__text {
        font-size: 0.875rem;
    }

    .floating-back-btn svg {
        width: 20px;
        height: 20px;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-light);
}

/* Login Page Specific */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 40px;
    text-align: center;
}

.login-logo {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
}

.login-logo svg {
    width: 40px;
    height: 40px;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: 32px;
}

.login-form {
    text-align: left;
}

.login-btn {
    width: 100%;
    padding: 14px;
    margin-top: 8px;
}

.login-demo {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.login-demo code {
    display: block;
    margin-top: 8px;
    padding: 12px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
}