/* 
   Zalo Manager Design System
   Warm paper, brown ink, forest green accent.
   Strict adherence to all interface, motion, and mobile ergonomics rules.
*/

:root {
    /* Safe Area Variables */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);

    /* Light Theme (Default) */
    --color-bg: #f3f0e8;
    --color-card: #fffcf7;
    --color-sub: #eae4d8;
    --color-text: #1c1915;
    --color-text-sub: #5f584e;
    --color-border: #ddd4c6;
    --color-accent: #0c6b58;
    --color-text-accent: #f3faf7;
    --color-danger: #9f2d2d;
    --color-text-danger: #fff6f5;

    /* Theme Accents (teal default) */
    --accent-teal: #0c6b58;
    --accent-teal-dark: #3dbea0;
    --accent-copper: #8a4b08;
    --accent-copper-dark: #e0a45a;
    --accent-blue: #1d4e89;
    --accent-blue-dark: #7eb6ea;
    --accent-olive: #3f6212;
    --accent-olive-dark: #b6d48a;

    /* Motion timings */
    --duration-hover: 120ms;
    --duration-page-out: 120ms;
    --duration-page-in: 120ms;
    --duration-tab: 120ms;
    --duration-modal-open: 180ms;
    --duration-modal-close: 140ms;
    --duration-overlay: 160ms;
    --duration-accordion-open: 220ms;
    --duration-accordion-close: 160ms;
    --duration-sidebar: 220ms;
    --duration-toast-in: 180ms;
    --duration-toast-out: 140ms;

    /* Easings */
    --ease-open: cubic-bezier(0.2, 0.8, 0.2, 1);
    --ease-close: cubic-bezier(0.4, 0, 1, 1);
}

/* Dark Mode Tokens */
[data-theme="dark"] {
    --color-bg: #12110e;
    --color-card: #1c1a16;
    --color-sub: #2a261f;
    --color-text: #f4f0e7;
    --color-text-sub: #b3aa9c;
    --color-border: #3a342c;
    --color-accent: #3dbea0;
    --color-text-accent: #06281f;
    --color-danger: #ffb4ab;
    --color-text-danger: #3b0907;
}

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

html, body {
    height: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Prevent background scrolling when mobile sidebar or modal dialog is active */
body.sidebar-open,
body.modal-open,
html:has(.sidebar.mobile-open),
body:has(.sidebar.mobile-open),
html:has(.modal-overlay.visible),
body:has(.modal-overlay.visible) {
    overflow: hidden !important;
    touch-action: none;
}

/* Typography Rules */
.mono {
    font-family: 'IBM Plex Mono', monospace;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

h1, .title-page {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.3;
}

h2, .title-popup {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.3;
}

h3, .title-block {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.kpi-number {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 20px;
    font-weight: 600;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

.text-sub {
    color: var(--color-text-sub);
}

.text-small {
    font-size: 12px;
    color: var(--color-text-sub);
}

/* Components */

/* Cards */
.card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px;
}

/* Buttons (Apple HIG & Material Design touch target compliant >= 44px) */
.btn {
    min-height: 44px;
    height: 44px;
    padding: 0 16px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    text-decoration: none;
    transition: background-color var(--duration-hover) linear, border-color var(--duration-hover) linear, opacity var(--duration-hover) linear;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: color-mix(in srgb, var(--color-accent) 90%, black);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-sub);
}

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

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-sub);
}

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

.btn-danger:hover:not(:disabled) {
    background-color: color-mix(in srgb, var(--color-danger) 90%, black);
}

/* Small button styling with adequate click area */
.btn-sm {
    min-height: 36px;
    height: 36px;
    padding: 0 10px;
    font-size: 13px;
}

/* Form Inputs & Selects */
.form-group {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
}

.form-label {
    font-size: 14px;
    color: var(--color-text-sub);
    margin-bottom: 6px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.form-input,
.form-select,
select.form-input,
textarea.form-input {
    width: 100%;
    min-height: 44px;
    height: 44px;
    padding: 0 12px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 16px; /* 16px minimum prevents automatic zooming on iOS Safari */
    color: var(--color-text);
    outline: none;
    transition: border-color var(--duration-hover) linear, box-shadow var(--duration-hover) linear;
    -webkit-appearance: none;
    appearance: none;
}

textarea.form-input {
    min-height: 72px;
    height: auto;
    padding: 8px 12px;
    line-height: 1.4;
}

.form-input:focus,
.form-select:focus,
select.form-input:focus,
textarea.form-input:focus {
    border-color: var(--color-accent);
}

.form-input.has-error {
    border-color: var(--color-danger);
}

.form-error {
    font-size: 12px;
    color: var(--color-danger);
    margin-top: 4px;
    display: none;
}

.form-error.visible {
    display: block;
}

/* Password eye button (Min 44x44px touch area) */
.btn-toggle-password {
    position: absolute;
    right: 0;
    top: 0;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    -webkit-tap-highlight-color: transparent;
}

/* Icons */
.icon {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    background-color: var(--color-sub);
    color: var(--color-text-sub);
    white-space: nowrap;
    border: 1px solid transparent;
}

/* Đang thuê */
.badge-active {
    background-color: rgba(16, 185, 129, 0.12);
    color: #065f46;
    border-color: rgba(16, 185, 129, 0.25);
}
.badge-active::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #10b981;
}

/* Chờ thuê */
.badge-warning {
    background-color: rgba(245, 158, 11, 0.12);
    color: #92400e;
    border-color: rgba(245, 158, 11, 0.25);
}
.badge-warning::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #f59e0b;
}

/* Đang nuôi */
.badge-info {
    background-color: rgba(14, 165, 233, 0.12);
    color: #0369a1;
    border-color: rgba(14, 165, 233, 0.25);
}
.badge-info::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #0284c7;
}

/* Báo đỏ */
.badge-danger {
    background-color: rgba(239, 68, 68, 0.14);
    color: #991b1b;
    border-color: rgba(239, 68, 68, 0.3);
    font-weight: 600;
}
.badge-danger::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #ef4444;
}

/* Tables & Table Container */
.table-container {
    overflow-x: auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-x pan-y;
    max-height: calc(100vh - 200px);
    max-height: calc(100dvh - 200px);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background-color: var(--color-card);
    position: relative;
    /* Smooth custom scrollbars */
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.table-container::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

.table {
    width: 100%;
    min-width: 680px; /* Crucial: Prevents 7-9 columns from crushing on mobile */
    border-collapse: collapse;
    font-size: 14px;
}

.table th {
    position: sticky;
    top: 0;
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 12px;
    text-align: left;
    font-weight: 500;
    color: var(--color-text-sub);
    z-index: 10;
    white-space: nowrap;
}

.table td {
    padding: 10px 12px;
    height: 44px;
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--duration-hover) linear;
    white-space: nowrap;
}

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

.table tr.selected td {
    background-color: color-mix(in srgb, var(--color-accent) 10%, transparent);
}

.table .num-col {
    text-align: right;
    font-family: 'IBM Plex Mono', monospace;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

/* Table action buttons */
.table td .btn + .btn {
    margin-left: 6px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 16px;
    bottom: max(16px, env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    max-width: min(384px, calc(100vw - 32px));
    width: calc(100% - 32px);
    padding: 12px 16px;
    border-radius: 6px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: transform var(--duration-toast-in) var(--ease-open), opacity var(--duration-toast-in) var(--ease-open);
}

.toast.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.toast.toast-hide {
    transform: translateX(-50%) translateY(8px);
    opacity: 0;
    transition: transform var(--duration-toast-out) var(--ease-close), opacity var(--duration-toast-out) var(--ease-close);
}

.toast-success {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.toast-error {
    background-color: var(--color-danger);
    color: var(--color-text-danger);
}

/* Modal / Overlay */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(28, 25, 21, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
    opacity: 0;
    pointer-events: none;
    padding: 16px;
    padding-top: max(16px, env(safe-area-inset-top));
    padding-bottom: max(16px, env(safe-area-inset-bottom));
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
    transition: opacity var(--duration-overlay) linear;
}

.modal-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    width: 100%;
    max-width: 500px;
    max-height: calc(100vh - 32px);
    max-height: calc(100dvh - 32px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 18px;
    transform: scale(0.96);
    opacity: 0;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
    transition: transform var(--duration-modal-open) var(--ease-open), opacity var(--duration-modal-open) var(--ease-open);
}

.modal-overlay.visible .modal-card {
    transform: scale(1);
    opacity: 1;
}

.modal-overlay.closing {
    opacity: 0;
    transition: opacity var(--duration-modal-close) var(--ease-close);
}

.modal-overlay.closing .modal-card {
    transform: scale(0.96);
    opacity: 0;
    transition: transform var(--duration-modal-close) var(--ease-close), opacity var(--duration-modal-close) var(--ease-close);
}

/* Close modal button touch area */
.btn-close-modal {
    width: 44px !important;
    height: 44px !important;
    min-width: 44px !important;
    min-height: 44px !important;
    font-size: 18px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 6px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

/* Accordion */
.accordion-item {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    margin-bottom: 8px;
    overflow: hidden;
}

.accordion-header {
    height: 44px;
    min-height: 44px;
    padding: 0 12px;
    background-color: var(--color-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-weight: 500;
    transition: background-color var(--duration-hover) linear;
    -webkit-tap-highlight-color: transparent;
}

.accordion-header:hover {
    background-color: var(--color-sub);
}

.accordion-icon {
    transition: transform var(--duration-accordion-open) var(--ease-open);
}

.accordion-item.open .accordion-icon {
    transform: rotate(180deg);
}

.accordion-body-grid {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--duration-accordion-open) var(--ease-open);
}

.accordion-item.open .accordion-body-grid {
    grid-template-rows: 1fr;
}

.accordion-content {
    overflow: hidden;
    opacity: 0;
    transition: opacity var(--duration-page-out) linear;
}

.accordion-item.open .accordion-content {
    opacity: 1;
    padding: 12px;
    background-color: var(--color-bg);
}

/* Page Layout */
.app-layout {
    display: flex;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 288px;
    height: 100vh;
    height: 100dvh;
    background-color: var(--color-card);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width var(--duration-sidebar) var(--ease-open);
}

.sidebar.collapsed {
    width: 64px;
}

.sidebar-header {
    height: 56px;
    min-height: 56px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.app-logo {
    width: 32px;
    height: 32px;
    min-width: 32px;
    min-height: 32px;
    border-radius: 6px;
    background-color: var(--color-accent);
    color: var(--color-text-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
}

.app-title-group {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    white-space: nowrap;
    transition: opacity 120ms linear;
}

.sidebar.collapsed .app-title-group {
    opacity: 0;
    pointer-events: none;
}

.app-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.app-sub {
    font-size: 12px;
    color: var(--color-text-sub);
}

/* Menu items */
.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.nav-item {
    height: 44px;
    min-height: 44px;
    padding: 0 12px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 4px;
    transition: background-color var(--duration-hover) linear;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
}

.nav-item:hover {
    background-color: var(--color-sub);
}

.nav-item.active {
    background-color: color-mix(in srgb, var(--color-accent) 15%, transparent);
    font-weight: 600;
}

.nav-text {
    transition: opacity 120ms linear;
}

.sidebar.collapsed .nav-text {
    opacity: 0;
    display: none;
}

.sidebar-footer {
    padding: 12px 8px;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

/* Main Area */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0; /* Prevents overflow flex items from expanding wrapper */
}

/* Header */
.top-header {
    height: 56px;
    min-height: 56px;
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    padding-top: max(0px, env(safe-area-inset-top));
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
    flex-shrink: 0;
    z-index: 50;
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-left {
    min-width: 0;
    flex: 1;
}

.header-left .title-page {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.btn-sidebar-toggle {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}

.btn-sidebar-toggle:hover {
    background-color: var(--color-sub);
}

/* Content Area */
.content-area {
    --content-padding: 16px;
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: var(--content-padding);
    padding-left: max(var(--content-padding), env(safe-area-inset-left));
    padding-right: max(var(--content-padding), env(safe-area-inset-right));
    padding-bottom: max(var(--content-padding), env(safe-area-inset-bottom));
    background-color: var(--color-bg);
    position: relative;
    view-transition-name: page-content;
}

/* Page transitions - Zero stutter, pure opacity 120ms linear */
.page-container {
    width: 100%;
    opacity: 1;
}

.page-container.page-exit {
    position: absolute;
    top: var(--content-padding);
    left: var(--content-padding);
    right: var(--content-padding);
    pointer-events: none;
    z-index: 1;
    opacity: 0;
    transition: opacity 120ms linear;
}

.page-container.page-enter {
    opacity: 0;
}

.page-container.page-enter-active {
    opacity: 1;
    transition: opacity 120ms linear;
}

.page-container.instant {
    transition: none !important;
    animation: none !important;
    opacity: 1 !important;
}

::view-transition-old(root),
::view-transition-new(root),
::view-transition-old(page-content),
::view-transition-new(page-content) {
    animation-duration: 120ms;
    animation-timing-function: linear;
}

::view-transition-old(page-content) {
    animation-name: page-fade-out;
}

::view-transition-new(page-content) {
    animation-name: page-fade-in;
}

@keyframes page-fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes page-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Tabs Component */
.tabs-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
    scrollbar-width: none;
}

.tabs-nav::-webkit-scrollbar {
    display: none;
}

.tab-item {
    height: 44px;
    min-height: 44px;
    padding: 0 16px;
    border: none;
    background: transparent;
    color: var(--color-text-sub);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    transition: color 120ms linear, border-color 120ms linear;
    -webkit-tap-highlight-color: transparent;
}

.tab-item:hover {
    color: var(--color-text);
}

.tab-item.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
    font-weight: 600;
}

.tabs-content {
    position: relative;
    width: 100%;
}

.tab-pane {
    width: 100%;
    display: none;
    opacity: 1;
}

.tab-pane.active {
    display: block;
}

.tab-pane.tab-exit {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0;
    transition: opacity 120ms linear;
}

.tab-pane.tab-enter {
    display: block;
    opacity: 0;
}

.tab-pane.tab-enter-active {
    display: block;
    opacity: 1;
    transition: opacity 120ms linear;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */

/* 1. TABLET & SMALL DESKTOP (<= 1024px) */
@media (max-width: 1024px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 200;
        width: min(288px, 85vw);
        height: 100vh;
        height: 100dvh;
        transform: translateX(-100%);
        transition: transform var(--duration-sidebar) var(--ease-open);
        padding-top: max(0px, env(safe-area-inset-top));
        padding-bottom: max(0px, env(safe-area-inset-bottom));
        padding-left: max(0px, env(safe-area-inset-left));
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    /* Cancel desktop collapsed state when in drawer mode */
    .sidebar.collapsed {
        width: min(288px, 85vw);
    }

    .sidebar.collapsed .app-title-group,
    .sidebar.collapsed .nav-text {
        opacity: 1 !important;
        display: inline !important;
        pointer-events: auto !important;
    }

    .sidebar-backdrop {
        position: fixed;
        inset: 0;
        background-color: rgba(28, 25, 21, 0.5);
        z-index: 190;
        opacity: 0;
        pointer-events: none;
        transition: opacity 220ms linear;
    }

    .sidebar-backdrop.visible {
        opacity: 1;
        pointer-events: auto;
    }

    .content-area {
        --content-padding: 12px;
        padding: var(--content-padding);
        padding-left: max(var(--content-padding), env(safe-area-inset-left));
        padding-right: max(var(--content-padding), env(safe-area-inset-right));
        padding-bottom: max(var(--content-padding), env(safe-area-inset-bottom));
    }

    /* Dashboard: collapse 2fr 1fr grid to 1fr on tablet & mobile */
    .page-container div[style*="grid-template-columns: 2fr 1fr"],
    .page-container div[style*="2fr 1fr"] {
        grid-template-columns: 1fr !important;
        gap: 12px !important;
    }
}

/* 2. MOBILE LANDSCAPE & PORTRAIT (<= 768px) */
@media (max-width: 768px) {
    /* Header optimization */
    .top-header {
        height: 52px;
        min-height: 52px;
        padding: 0 12px;
        padding-left: max(12px, env(safe-area-inset-left));
        padding-right: max(12px, env(safe-area-inset-right));
        padding-top: max(0px, env(safe-area-inset-top));
    }

    .header-left {
        gap: 8px;
    }

    .header-right {
        gap: 8px;
    }

    /* Hide username on mobile to ensure title has breathing room */
    .header-right .text-sub,
    .header-right .user-display-name {
        display: none !important;
    }

    .title-page {
        font-size: 16px;
    }

    /* List pages search toolbar & action button */
    .page-container div[style*="justify-content: space-between"] {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 10px !important;
    }

    .page-container div[style*="justify-content: space-between"] > div {
        width: 100% !important;
    }

    .page-container input#searchInput,
    .page-container input[placeholder*="Tìm theo"] {
        width: 100% !important;
        max-width: 100% !important;
    }

    .page-container div[style*="justify-content: space-between"] .btn-primary {
        width: 100% !important;
        justify-content: center;
    }

    /* Table & Actions on mobile */
    .table-container {
        max-height: calc(100vh - 160px);
        max-height: calc(100dvh - 160px);
        border-radius: 6px;
    }

    .table {
        min-width: 650px;
    }

    .table th, .table td {
        padding: 8px 10px;
        font-size: 13px;
    }

    /* Action buttons in table row touch targets */
    .table td button.btn-sm,
    .table td .btn-edit,
    .table td .btn-delete {
        min-height: 44px !important;
        height: 44px !important;
        min-width: 44px !important;
        padding: 0 12px !important;
        font-size: 14px !important;
    }

    /* Modal dialog mobile ergonomics */
    .modal-overlay {
        padding: 12px;
        padding-top: max(12px, env(safe-area-inset-top));
        padding-bottom: max(12px, env(safe-area-inset-bottom));
        padding-left: max(12px, env(safe-area-inset-left));
        padding-right: max(12px, env(safe-area-inset-right));
        align-items: flex-end; /* Bottom sheet style on mobile */
    }

    .modal-card {
        max-width: 100% !important;
        width: 100% !important;
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
        border-top-left-radius: 16px;
        border-top-right-radius: 16px;
        padding: 18px 16px;
        padding-bottom: max(20px, env(safe-area-inset-bottom));
        max-height: calc(90dvh);
        max-height: calc(90vh);
        transform: translateY(24px);
    }

    .modal-overlay.visible .modal-card {
        transform: translateY(0);
    }

    .modal-overlay.closing .modal-card {
        transform: translateY(24px);
    }

    /* Force modal form 2-column grid into 1-column on mobile screens */
    #accountForm div[style*="grid-template-columns"],
    .modal-card div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
        gap: 10px !important;
    }

    /* Modal action buttons stacked */
    .modal-card form div[style*="justify-content: flex-end"] {
        flex-direction: column-reverse;
        gap: 8px !important;
        margin-top: 20px !important;
    }

    .modal-card form div[style*="justify-content: flex-end"] .btn {
        width: 100% !important;
        min-height: 44px;
        height: 44px;
    }
}

/* 3. SMALL MOBILE PHONES (<= 480px) */
@media (max-width: 480px) {
    .content-area {
        --content-padding: 8px;
        padding: var(--content-padding);
        padding-left: max(8px, env(safe-area-inset-left));
        padding-right: max(8px, env(safe-area-inset-right));
        padding-bottom: max(8px, env(safe-area-inset-bottom));
    }

    .top-header {
        height: 48px;
        min-height: 48px;
        padding: 0 8px;
        padding-left: max(8px, env(safe-area-inset-left));
        padding-right: max(8px, env(safe-area-inset-right));
    }

    .title-page {
        font-size: 15px;
    }

    .btn-sidebar-toggle {
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
    }

    .card {
        padding: 10px;
    }

    /* Dashboard KPI cards on small mobile */
    .page-container div[style*="repeat(auto-fit, minmax(200px, 1fr))"] {
        grid-template-columns: 1fr 1fr !important;
        gap: 8px !important;
    }

    .kpi-number {
        font-size: 18px;
    }

    .tabs-nav {
        gap: 4px;
        margin-bottom: 12px;
    }

    .tab-item {
        padding: 0 12px;
        font-size: 13px;
        height: 44px;
        min-height: 44px;
    }

    .toast {
        width: calc(100% - 16px);
        padding: 10px 14px;
        font-size: 13px;
    }
}

/* Ultra small screens (<= 360px) */
@media (max-width: 360px) {
    .page-container div[style*="repeat(auto-fit, minmax(200px, 1fr))"] {
        grid-template-columns: 1fr !important;
    }
}

/* Reduced Motion - Hiện ngay lập tức, không fade */
@media (prefers-reduced-motion: reduce) {
    *, ::before, ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .page-container,
    .page-container.page-exit,
    .page-container.page-enter,
    .page-container.page-enter-active,
    .tab-pane,
    .tab-pane.tab-exit,
    .tab-pane.tab-enter,
    .tab-pane.tab-enter-active,
    .modal-card,
    .sidebar {
        transition: none !important;
        animation: none !important;
        opacity: 1 !important;
    }

    .page-container.page-exit,
    .tab-pane.tab-exit {
        display: none !important;
    }
}