* ============ TABLET (768px) ============ */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 240px;
    }

    .grid-3 {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .search-box {
        max-width: 300px;
    }

    .top-bar-content {
        gap: var(--spacing-lg);
    }

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

/* ============ MOBILE (768px and below) ============ */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 0;
        --topbar-height: 60px;
    }

    #app {
        grid-template-columns: 1fr;
        grid-template-rows: var(--topbar-height) 1fr;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: var(--topbar-height);
        width: 280px;
        height: calc(100vh - var(--topbar-height));
        transform: translateX(-100%);
        z-index: 999;
        border-right: none;
        border-bottom: none;
    }

    .sidebar.active {
        transform: translateX(0);
        box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
    }

    .main-content {
        grid-column: 1;
        padding: var(--spacing-lg);
    }

    .top-bar {
        grid-column: 1;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .top-bar-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .search-box {
        width: 100%;
        max-width: none;
        order: -1;
    }

    .top-bar-actions {
        width: 100%;
        gap: var(--spacing-md);
    }

    .user-profile {
        flex: 1;
    }

    .user-info {
        display: none;
    }

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

    .card {
        padding: var(--spacing-md);
    }

    .card-header,
    .card-footer {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: var(--spacing-md);
    }

    .stat-card-value {
        font-size: var(--font-size-2xl);
    }

    .data-table {
        font-size: var(--font-size-xs);
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .tabs {
        gap: var(--spacing-md);
    }

    .tab-button {
        padding: var(--spacing-sm) 0;
        font-size: var(--font-size-xs);
    }

    .approval-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .approval-actions {
        width: 100%;
        flex-wrap: wrap;
    }

    .approval-actions .btn {
        flex: 1;
        min-width: 100px;
    }

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

    .modal-content {
        padding: var(--spacing-lg);
        width: 95%;
    }

    .toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        top: calc(var(--topbar-height) + var(--spacing-md));
    }

    .toast {
        max-width: none;
    }

    .nav-item .label {
        display: none;
    }

    .sidebar.active .nav-item .label {
        display: block;
    }

    .breadcrumb {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .page-container {
        padding: 0;
    }

    .logo-text p {
        display: none;
    }

    .sidebar.active .logo-text p {
        display: block;
    }
}

/* ============ SMALL MOBILE (480px and below) ============ */
@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --font-size-lg: 1rem;
        --font-size-2xl: 1.25rem;
        --font-size-3xl: 1.5rem;
    }

    #app {
        grid-template-rows: 50px 1fr;
    }

    .top-bar {
        padding: 0 var(--spacing-md);
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .btn {
        width: 100%;
        padding: var(--spacing-md);
    }

    .btn-sm {
        padding: var(--spacing-sm);
    }

    .card {
        padding: var(--spacing-md);
    }

    .stat-card-value {
        font-size: var(--font-size-xl);
    }

    .score-badge {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }

    input,
    textarea,
    select {
        padding: var(--spacing-sm);
        font-size: 16px;
    }

    .modal-content {
        padding: var(--spacing-md);
    }

    .chart-container {
        min-height: 250px;
    }

    .approval-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .tabs {
        margin-bottom: var(--spacing-md);
    }
}

/* ============ LANDSCAPE MOBILE ============ */
@media (max-height: 600px) and (orientation: landscape) {
    :root {
        --topbar-height: 50px;
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .card {
        padding: var(--spacing-md);
    }

    input,
    textarea,
    select {
        padding: var(--spacing-sm);
    }

    .chart-container {
        min-height: 200px;
    }
}

/* ============ PRINT ============ */
@media print {
    .sidebar,
    .top-bar,
    .sidebar-footer,
    .mobile-menu-toggle,
    .btn,
    .modal,
    .toast-container {
        display: none !important;
    }

    #app {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr;
    }

    .main-content {
        grid-column: 1;
        grid-row: 1;
        padding: 0;
    }

    .page-container {
        max-width: 100%;
    }

    .card {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .card-header,
    .card-footer {
        display: block;
    }
}

/* ============ HIGH DPI ============ */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    * {
        box-shadow: 0 0 0 0.5px var(--border);
    }

    button,
    input,
    textarea,
    select {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* ============ DARK MODE PREFERENCE ============ */
@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
    }

    [data-theme="system"] {
        --bg-primary: #1f2937;
        --bg-secondary: #111827;
        --bg-tertiary: #374151;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-tertiary: #9ca3af;
        --border: #4b5563;
    }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============ SCROLLBAR STYLING ============ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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