/* ============================================
   WAREHOUSE DASHBOARD — Modern Design System
   Mobile-first, scalable, themeable
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Colors — Neutral */
    --color-bg: #f8f9fc;
    --color-surface: #ffffff;
    --color-surface-hover: #f1f3f9;
    --color-border: #e2e5ed;
    --color-border-light: #eef0f6;
    --color-text: #1a1d26;
    --color-text-secondary: #6b7189;
    --color-text-muted: #9498ad;

    /* Colors — Brand */
    --color-primary: #4f46e5;
    --color-primary-light: #eef2ff;
    --color-primary-hover: #4338ca;

    /* Colors — Semantic */
    --color-success: #10b981;
    --color-success-light: #ecfdf5;
    --color-warning: #f59e0b;
    --color-warning-light: #fffbeb;
    --color-danger: #ef4444;
    --color-danger-light: #fef2f2;
    --color-info: #3b82f6;
    --color-info-light: #eff6ff;

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
    --header-height: 64px;
    --content-max-width: 1440px;

    /* Spacing Scale */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --text-xs: 0.75rem;
    --text-sm: 0.8125rem;
    --text-base: 0.875rem;
    --text-lg: 1rem;
    --text-xl: 1.125rem;
    --text-2xl: 1.375rem;
    --text-3xl: 1.75rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Dark Mode ---------- */
[data-theme="dark"] {
    --color-bg: #0f1117;
    --color-surface: #1a1d2b;
    --color-surface-hover: #242738;
    --color-border: #2a2d3e;
    --color-border-light: #222538;
    --color-text: #eef0f6;
    --color-text-secondary: #9498ad;
    --color-text-muted: #6b7189;
    --color-primary-light: #1e1b4b;
    --color-success-light: #052e16;
    --color-warning-light: #451a03;
    --color-danger-light: #450a0a;
    --color-info-light: #172554;
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px 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);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
    display: block;
}

button, input, select, textarea {
    font: inherit;
    color: inherit;
}

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

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

.app__sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-slow), width var(--transition-slow);
}

.app__main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-slow);
}

.app__header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: rgba(248, 249, 252, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 var(--space-6);
    gap: var(--space-4);
    z-index: 50;
}

[data-theme="dark"] .app__header {
    background: rgba(15, 17, 23, 0.85);
}

.app__content {
    flex: 1;
    padding: var(--space-6);
    max-width: var(--content-max-width);
    width: 100%;
    margin: 0 auto;
}

/* ---------- Sidebar ---------- */
.sidebar__brand {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 var(--space-5);
    gap: var(--space-3);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.sidebar__logo {
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.sidebar__title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
}

.sidebar__nav {
    flex: 1;
    padding: var(--space-3);
    overflow-y: auto;
    scrollbar-width: thin;
}

.sidebar__section {
    margin-bottom: var(--space-5);
}

.sidebar__label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-1);
}

.sidebar__accordion {
    border-radius: var(--radius-md);
}

.sidebar__accordion-toggle {
    list-style: none;
    cursor: pointer;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
}

.sidebar__accordion,
.sidebar__accordion-toggle,
.sidebar__accordion-toggle:hover {
    cursor: pointer;
}

.sidebar__accordion-toggle::-webkit-details-marker {
    display: none;
}

.sidebar__accordion-toggle::after {
    content: '';
    width: 7px;
    height: 7px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform var(--transition-fast);
    margin-left: var(--space-2);
}

.sidebar__accordion[open] .sidebar__accordion-toggle::after {
    transform: rotate(-135deg);
}

.sidebar__submenu {
    padding-left: var(--space-2);
}

.sidebar__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    text-decoration: none;
}

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

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

.sidebar__link.active::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--color-primary);
    border-radius: 0 3px 3px 0;
}

.sidebar__icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.7;
}

.sidebar__link.active .sidebar__icon {
    opacity: 1;
}

.sidebar__badge {
    margin-left: auto;
    background: var(--color-danger);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    line-height: 1.4;
}

.sidebar__footer {
    padding: var(--space-3);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

.sidebar__user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.sidebar__user:hover {
    background: var(--color-surface-hover);
}

.sidebar__avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--text-xs);
    font-weight: 600;
    flex-shrink: 0;
}

.sidebar__user-info {
    overflow: hidden;
}

.sidebar__user-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.sidebar__logout {
    display: block;
    margin-top: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--color-danger);
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.sidebar__logout:hover {
    background: var(--color-danger-light);
    color: #b91c1c;
}

/* ---------- Login ---------- */
.login-page {
    min-height: 100vh;
    background:
        radial-gradient(circle at 8% 12%, rgba(79, 70, 229, 0.15), transparent 42%),
        radial-gradient(circle at 86% 88%, rgba(59, 130, 246, 0.18), transparent 44%),
        linear-gradient(135deg, #f5f7ff 0%, #eef2f8 100%);
}

.login-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: var(--space-6);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-6);
}

.login-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.login-logo {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-primary), #2563eb);
    color: #fff;
    font-weight: 700;
    display: grid;
    place-items: center;
}

.login-title {
    font-size: 1.15rem;
    line-height: 1.2;
}

.login-subtitle {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.login-alert {
    margin-bottom: var(--space-4);
    background: var(--color-danger-light);
    border: 1px solid #fecaca;
    color: #991b1b;
    border-radius: var(--radius-md);
    padding: var(--space-3);
    font-size: var(--text-sm);
}

.login-form {
    display: grid;
    gap: var(--space-3);
}

.login-label {
    font-size: var(--text-sm);
    font-weight: 600;
}

.login-input {
    width: 100%;
    height: 42px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0 var(--space-3);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background: #fff;
}

.login-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.login-submit {
    margin-top: var(--space-2);
    height: 42px;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary), #2563eb);
    color: #fff;
    font-weight: 700;
    cursor: pointer;
    transition: transform var(--transition-fast), filter var(--transition-fast);
}

.login-submit:hover {
    transform: translateY(-1px);
    filter: brightness(1.03);
}

.login-submit:disabled {
    cursor: not-allowed;
    opacity: 0.7;
    transform: none;
    filter: none;
}

.login-alert--success {
    color: var(--color-success);
    background: var(--color-success-light);
    border-color: rgba(16, 185, 129, 0.18);
}

.login-help {
    margin-top: var(--space-3);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.login-inline-form {
    display: inline;
}

.login-text-link {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--color-primary);
    cursor: pointer;
    text-decoration: underline;
}

.login-text-link:hover:not(:disabled) {
    color: var(--color-primary-hover);
}

.login-text-link:disabled {
    color: var(--color-text-muted);
    cursor: not-allowed;
    text-decoration: none;
}

/* ---------- Header ---------- */
.header__menu-btn {
    display: none;
    background: none;
    border: none;
    padding: var(--space-2);
    cursor: pointer;
    color: var(--color-text);
    border-radius: var(--radius-sm);
}

.header__menu-btn:hover {
    background: var(--color-surface-hover);
}

.header__search {
    flex: 1;
    max-width: 420px;
    position: relative;
}

.header__search-input {
    width: 100%;
    height: 38px;
    padding: 0 var(--space-4) 0 38px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    font-size: var(--text-sm);
    outline: none;
    transition: all var(--transition-fast);
}

.header__search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.header__search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: auto;
}

.header__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

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

.header__btn-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 7px;
    height: 7px;
    background: var(--color-danger);
    border-radius: 50%;
    border: 2px solid var(--color-surface);
}

/* ---------- Page Header ---------- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.page-header__title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.page-header__subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-1);
}

/* ---------- Stat Cards ---------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.stat-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.stat-card__icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.stat-card__trend {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.stat-card__trend--up {
    color: var(--color-success);
    background: var(--color-success-light);
}

.stat-card__trend--down {
    color: var(--color-danger);
    background: var(--color-danger-light);
}

.stat-card__value {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.stat-card__label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-1);
}

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

.card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5);
    border-bottom: 1px solid var(--color-border-light);
}

.card__title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
}

.card__body {
    padding: var(--space-5);
}

.card__body--flush {
    padding: 0;
}

/* ---------- Grid Layouts ---------- */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.grid-3 {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-4);
}

/* ---------- Data Table ---------- */
.data-table {
    width: 100%;
    font-size: var(--text-sm);
}

.data-table thead {
    background: var(--color-bg);
}

.data-table th {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-weight: 600;
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.data-table td {
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--color-border-light);
    white-space: nowrap;
}

.data-table tbody tr {
    transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
    background: var(--color-surface-hover);
}

.data-table__id {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-primary);
    font-weight: 500;
}

/* ---------- Badges / Status ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    white-space: nowrap;
}

.badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.badge--pending    { background: var(--color-warning-light); color: var(--color-warning); }
.badge--pending::before    { background: var(--color-warning); }

.badge--processing { background: var(--color-info-light); color: var(--color-info); }
.badge--processing::before { background: var(--color-info); }

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

.badge--delivered  { background: var(--color-success-light); color: var(--color-success); }
.badge--delivered::before  { background: var(--color-success); }

.badge--low-stock  { background: var(--color-danger-light); color: var(--color-danger); }
.badge--low-stock::before  { background: var(--color-danger); }

.badge--in-stock   { background: var(--color-success-light); color: var(--color-success); }
.badge--in-stock::before   { background: var(--color-success); }

/* ---------- Activity Feed ---------- */
.activity-feed {
    list-style: none;
}

.activity-feed__item {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    position: relative;
}

.activity-feed__item:not(:last-child) {
    border-bottom: 1px solid var(--color-border-light);
}

.activity-feed__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    margin-top: 6px;
    flex-shrink: 0;
}

.activity-feed__content {
    flex: 1;
    min-width: 0;
}

.activity-feed__action {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
}

.activity-feed__detail {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.activity-feed__meta {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: 4px;
}

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

.progress__bar {
    height: 100%;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    transition: width var(--transition-slow);
}

.progress__bar--success { background: var(--color-success); }
.progress__bar--warning { background: var(--color-warning); }
.progress__bar--danger  { background: var(--color-danger); }

/* ---------- Category List ---------- */
.category-list {
    list-style: none;
}

.category-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
}

.category-item:not(:last-child) {
    border-bottom: 1px solid var(--color-border-light);
}

.category-item__color {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.category-item__name {
    flex: 1;
    font-size: var(--text-sm);
    font-weight: 500;
}

.category-item__count {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

.category-item__pct {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    width: 32px;
    text-align: right;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    height: 36px;
}

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

.btn--outline {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn--outline:hover {
    background: var(--color-surface-hover);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: none;
    padding: var(--space-2);
}
.btn--ghost:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.btn--sm {
    height: 30px;
    padding: 0 var(--space-3);
    font-size: var(--text-xs);
}

/* ---------- Chart Container ---------- */
.chart-container {
    position: relative;
    width: 100%;
    height: 280px;
}

/* ---------- Warehouse Capacity ---------- */
.capacity {
    text-align: center;
    padding: var(--space-5) 0;
}

.capacity__ring {
    position: relative;
    width: 160px;
    height: 160px;
    margin: 0 auto var(--space-4);
}

.capacity__ring svg {
    transform: rotate(-90deg);
}

.capacity__ring-value {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.capacity__pct {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
}

.capacity__label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.capacity__zones {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-top: var(--space-4);
}

.capacity__zone {
    text-align: center;
}

.capacity__zone-label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
}

.capacity__zone-value {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
    color: var(--color-text-muted);
}

.empty-state__icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    opacity: 0.4;
}

/* ---------- Mobile Overlay ---------- */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.sidebar-overlay.visible {
    opacity: 1;
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

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

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

/* ---------- Table Wrapper for mobile ---------- */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ============================================
   RESPONSIVE — Tablet
   ============================================ */
@media (max-width: 1024px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }

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

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

/* ============================================
   RESPONSIVE — Mobile
   ============================================ */
@media (max-width: 768px) {
    .app__sidebar {
        transform: translateX(-100%);
    }

    .app__sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-xl);
    }

    .app__main {
        margin-left: 0;
    }

    .header__menu-btn {
        display: flex;
    }

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

    .app__content {
        padding: var(--space-4);
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3);
    }

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

    .stat-card {
        padding: var(--space-4);
    }

    .stat-card__value {
        font-size: var(--text-2xl);
    }

    .header__search {
        display: none;
    }

    .chart-container {
        height: 220px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeIn 0.4s ease-out both;
}

.animate-in:nth-child(1) { animation-delay: 0ms; }
.animate-in:nth-child(2) { animation-delay: 50ms; }
.animate-in:nth-child(3) { animation-delay: 100ms; }
.animate-in:nth-child(4) { animation-delay: 150ms; }
.animate-in:nth-child(5) { animation-delay: 200ms; }
.animate-in:nth-child(6) { animation-delay: 250ms; }