/* ══════════════════════════════════════════════════════════
           FINVAULT DESIGN SYSTEM — Enterprise Dark
           SAP Fiori × Bloomberg Terminal aesthetic
           Garden City Water Park · Payment Voucher System
        ══════════════════════════════════════════════════════════ */
        :root {
            --ink-950: #070d14;
            --ink-900: #0c1521;
            --ink-800: #111e2e;
            --ink-750: #152236;
            --ink-700: #1a2a40;
            --ink-600: #1f3350;
            --ink-500: #254060;

            --cyan-700: #0e7490;
            --cyan-600: #0891b2;
            --cyan-500: #06b6d4;
            --cyan-400: #22d3ee;
            --cyan-300: #67e8f9;
            --cyan-100: #cffafe;
            --cyan-50:  #ecfeff;

            --coral-500: #f5877d;
            --coral-400: #f79f97;

            --surface-900: #0d1a26;
            --surface-800: #122030;
            --surface-700: #182840;

            --text-primary:   #e2eaf4;
            --text-secondary: #8fa8c0;
            --text-muted:     #4a6480;
            --text-accent:    #22d3ee;

            --success:       #22c55e;
            --success-light: rgba(34,197,94,0.12);
            --warning:       #f59e0b;
            --warning-light: rgba(245,158,11,0.12);
            --danger:        #ef4444;
            --danger-light:  rgba(239,68,68,0.12);
            --info:          #3b82f6;
            --info-light:    rgba(59,130,246,0.12);

            --primary-50:  #e8f4f8;
            --primary-100: #d1e9f1;
            --primary-200: #a3d3e3;
            --primary-300: #75bdd5;
            --primary-400: #47a7c7;
            --primary-500: #06b6d4;
            --primary-600: #0891b2;
            --primary-700: #0e7490;
            --primary-800: #0a3a4a;
            --primary-900: #051d25;
            --gray-50:  #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb;
            --gray-300: #d1d5db; --gray-400: #9ca3af; --gray-500: #6b7280;
            --gray-600: #4b5563; --gray-700: #374151; --gray-800: #1f2937; --gray-900: #111827;

            --font-heading: 'Kantumruy Pro', 'Montserrat', 'Battambang', sans-serif;
            --font-body:    'Kantumruy Pro', 'Montserrat', 'Battambang', sans-serif;
            --font-mono:    'Kantumruy Pro', 'Montserrat', 'Battambang', sans-serif;

            --spacing-xs:  0.25rem; --spacing-sm:  0.5rem;  --spacing-md:  1rem;
            --spacing-lg:  1.5rem;  --spacing-xl:  2rem;    --spacing-2xl: 3rem; --spacing-3xl: 4rem;

            --radius-sm:   0.25rem; --radius-md:   0.5rem; --radius-lg:   0.75rem;
            --radius-xl:   1rem;    --radius-2xl:  1.5rem;  --radius-full: 9999px;

            --shadow-sm:   0 1px 3px rgba(0,0,0,0.4);
            --shadow-md:   0 4px 16px rgba(0,0,0,0.5);
            --shadow-lg:   0 8px 32px rgba(0,0,0,0.6);
            --shadow-xl:   0 16px 48px rgba(0,0,0,0.7);
            --shadow-2xl:  0 24px 64px rgba(0,0,0,0.8);
            --shadow-glow: 0 0 24px rgba(6,182,212,0.18);

            --border:        rgba(255,255,255,0.07);
            --border-accent: rgba(6,182,212,0.35);

            --transition-fast: 150ms cubic-bezier(0.4,0,0.2,1);
            --transition-base: 250ms cubic-bezier(0.4,0,0.2,1);
            --transition-slow: 350ms cubic-bezier(0.4,0,0.2,1);

            /* ── Sidebar dimensions ── */
            --sidebar-w:          240px;
            --sidebar-w-collapsed: 64px;
            --topbar-h:           52px;

            /* ── Breakpoint variables ── */
            --bp-xs:  375px;
            --bp-sm:  576px;
            --bp-md:  768px;
            --bp-lg:  1024px;
            --bp-xl:  1280px;
            --bp-2xl: 1440px;
        }

        /* ══════════════════════════════════════════════════════════
           LIGHT MODE — Default Theme
        ══════════════════════════════════════════════════════════ */
        body[data-theme="light"] {
            --ink-950: #e8ebef;
            --ink-900: #dde2e8;
            --ink-800: #d2d8df;
            --ink-750: #c4cdd6;
            --ink-700: #d2d8df;
            --ink-600: #c4cdd6;
            --ink-500: #8a96a3;

            --surface-900: #f2f4f7;
            --surface-800: #f2f4f7;
            --surface-700: #ebeef1;

            --text-primary:   #2d3748;
            --text-secondary: #4a5568;
            --text-muted:     #64748b;
            --text-disabled:  #cbd5e1;
            --text-accent:    #0891b2;

            --border:        rgba(0,0,0,0.1);
            --border-accent: rgba(6,182,212,0.4);

            --shadow-sm:   0 1px 2px rgba(0,0,0,0.06);
            --shadow-md:   0 4px 6px rgba(0,0,0,0.08);
            --shadow-lg:   0 10px 15px rgba(0,0,0,0.1);
            --shadow-xl:   0 20px 25px rgba(0,0,0,0.13);
            --shadow-2xl:  0 25px 50px rgba(0,0,0,0.16);
            --shadow-glow: 0 0 20px rgba(6,182,212,0.18);

            /* Light mode specific colors */
            --success-light: rgba(34,197,94,0.14);
            --warning-light: rgba(245,158,11,0.14);
            --danger-light:  rgba(239,68,68,0.14);
            --info-light:    rgba(59,130,246,0.14);
        }

        body[data-theme="light"] {
            background: #e8ebef;
            color: #2d3748;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }

        body[data-theme="light"]::before {
            display: none;
        }

        /* Light mode - update html background */
        body[data-theme="light"] ~ html,
        html:has(body[data-theme="light"]) {
            background: #e8ebef;
        }

        /* Ensure crisp text rendering in light mode */
        body[data-theme="light"] {
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }

        /* ══════════════════════════════════════════════════════════
           SPA-LIKE NAVIGATION — Smooth content transitions
        ══════════════════════════════════════════════════════════ */
        #mainContent {
            transition: opacity 0.15s ease-out;
        }
        #mainContent.page-loading {
            opacity: 0.3;
            pointer-events: none;
        }

        /* ── Mobile-only cards: hidden on desktop, visible on mobile.
           Rule lives in base.css (never removed by SPA cleanup) so it
           survives every page transition regardless of which page CSS
           is currently loaded. ── */
        .mobile-voucher-cards {
            display: none !important;
        }
        @media (max-width: 768px) {
            .mobile-voucher-cards {
                display: block !important;
            }
        }
        .nav-loading-indicator {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--cyan-400);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
            z-index: 10000;
        }
        .nav-loading-indicator.active {
            transform: scaleX(1);
        }
        body[data-theme="light"] .nav-loading-indicator {
            background: #0891b2;
        }

        /* ══════════════ RESET & BASE ══════════════ */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html {
            scroll-behavior: smooth;
            background: var(--ink-950);
            transition: background-color 0.3s ease;
            overflow-x: hidden;
            max-width: 100vw;
        }

        body {
            font-family: var(--font-body);
            font-size: 14px;
            line-height: 1.6;
            transition: background-color 0.3s ease, color 0.3s ease;
            color: var(--text-primary);
            background: var(--ink-950);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            max-width: 100vw;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image:
                linear-gradient(rgba(6,182,212,0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(6,182,212,0.02) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
            z-index: 0;
        }

        h1,h2,h3,h4,h5,h6 {
            font-family: var(--font-heading); font-weight: 600; line-height: 1.25; color: var(--text-primary);
        }
        h1{font-size:1.875rem} h2{font-size:1.5rem} h3{font-size:1.25rem}
        h4{font-size:1.125rem} h5{font-size:1rem}   h6{font-size:0.875rem}

        ::-webkit-scrollbar { width: 5px; height: 5px; }
        ::-webkit-scrollbar-track { background: transparent; }
        ::-webkit-scrollbar-thumb { background: var(--ink-500); border-radius: 99px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--cyan-600); }

        /* ══════════════════════════════════════════
           LAYOUT SHELL
           sidebar (fixed left) + content wrapper
        ══════════════════════════════════════════ */
        .app-shell {
            display: flex;
            min-height: 100vh;
            position: relative;
            z-index: auto;
            max-width: 100vw;
            overflow-x: hidden;
        }

        /* ══════════════ SIDEBAR ══════════════ */
        .sidebar {
            position: fixed;
            top: 0; left: 0; bottom: 0;
            width: var(--sidebar-w);
            background: var(--ink-900);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 1040;
            transition: width var(--transition-base), transform var(--transition-base);
            overflow: hidden;
            padding: 0; /* Ensure no top padding */
            margin: 0;
        }

        .sidebar.collapsed {
            width: var(--sidebar-w-collapsed);
            padding: 0; /* Maintain no padding when collapsed */
            margin: 0;
        }

        /* Right-edge teal accent line */
        .sidebar::after {
            content: '';
            position: absolute;
            top: 0; right: 0; bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--cyan-600) 0%, var(--cyan-400) 40%, transparent 100%);
            pointer-events: none;
        }

        /* ── Brand ── */
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 14px;
            height: 60px;
            flex-shrink: 0;
            border-bottom: 1px solid var(--border);
            text-decoration: none;
            overflow: hidden;
            position: relative;
            margin: 0; /* Ensure no margin accumulation */
        }

        /* Ensure brand height stays consistent when collapsed/expanded */
        .sidebar.collapsed .sidebar-brand {
            height: 60px;
            padding: 0 14px;
            margin: 0;
        }

        .brand-mark {
            width: 80px; height: 80px;
            background: none;
            box-shadow: none;
            border-radius: 0;
            display: flex; align-items: center; justify-content: center;
            flex-shrink: 0;
            margin: 0;
            padding: 0;
        }

        /* Ensure logo stays consistent in collapsed state */
        .sidebar.collapsed .brand-mark {
            width: 80px;
            height: 80px;
            margin: 0;
            padding: 0;
        }

        .brand-text {
            display: flex; flex-direction: column; line-height: 1.1;
            opacity: 1; transition: opacity var(--transition-base);
            white-space: nowrap;
        }
        .sidebar.collapsed .brand-text { opacity: 0; pointer-events: none; }

        .brand-name-main { font-size: 0.9rem; font-weight: 700; color: var(--text-primary); }
        .brand-name-sub  { font-size: 0.6rem; font-weight: 500; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

        /* ── Collapse toggle button ── */
        .sidebar-toggle {
            position: absolute;
            top: 12px;
            right: -12px;
            width: 26px; height: 26px;
            background: var(--ink-700);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            display: flex; align-items: center; justify-content: center;
            cursor: pointer;
            color: var(--text-muted);
            font-size: 0.75rem;
            transition: all var(--transition-fast);
            z-index: 10;
        }
        .sidebar-toggle:hover { border-color: var(--border-accent); color: var(--cyan-400); background: var(--ink-600); }
        .sidebar.collapsed .sidebar-toggle { right: 50%; transform: translateX(50%); }

        /* ── Nav scroll area ── */
        .sidebar-nav {
            flex: 1;
            overflow-y: auto;
            overflow-x: hidden;
            padding: 10px 8px;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .sidebar-nav::-webkit-scrollbar { width: 3px; }

        /* Section label */
        .nav-section-label {
            font-size: 0.6rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-muted);
            padding: 12px 10px 4px;
            white-space: nowrap;
            overflow: hidden;
            transition: opacity var(--transition-base);
        }
        .sidebar.collapsed .nav-section-label { opacity: 0; }

        /* Nav item */
        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 10px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.8125rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
            overflow: hidden;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .sidebar-link:hover {
            background: rgba(255,255,255,0.05);
            color: var(--text-primary);
            border-color: var(--border);
        }

        .sidebar-link.active {
            background: rgba(6,182,212,0.1);
            color: var(--cyan-400);
            border-color: var(--border-accent);
        }

        /* Left accent bar on active */
        .sidebar-link.active::before {
            content: '';
            position: absolute;
            left: 0; top: 20%; bottom: 20%;
            width: 3px;
            background: var(--cyan-400);
            border-radius: 0 2px 2px 0;
        }

        .sidebar-link .nav-icon {
            font-size: 1rem;
            flex-shrink: 0;
            width: 20px;
            text-align: center;
            transition: color var(--transition-fast);
        }

        .sidebar-link .nav-label {
            flex: 1;
            opacity: 1;
            transition: opacity var(--transition-base);
        }
        .sidebar.collapsed .nav-label { opacity: 0; pointer-events: none; }

        /* Badge on nav item */
        .nav-badge {
            background: var(--danger);
            color: white;
            font-size: 0.6rem;
            font-weight: 700;
            padding: 1px 6px;
            border-radius: var(--radius-full);
            min-width: 18px;
            text-align: center;
            flex-shrink: 0;
            transition: opacity var(--transition-base);
        }
        .sidebar.collapsed .nav-badge { opacity: 0; }

        /* Tooltip on collapsed */
        .sidebar.collapsed .sidebar-link::after {
            content: attr(data-tooltip);
            position: absolute;
            left: calc(100% + 12px);
            top: 50%;
            transform: translateY(-50%);
            background: var(--ink-700);
            border: 1px solid var(--border-accent);
            color: var(--cyan-400);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 5px 10px;
            border-radius: var(--radius-md);
            white-space: nowrap;
            pointer-events: none;
            opacity: 0;
            transition: opacity var(--transition-fast);
            z-index: 100;
            box-shadow: var(--shadow-lg);
        }
        .sidebar.collapsed .sidebar-link:hover::after { opacity: 1; }

        /* Sub-nav (accordion) */
        .sidebar-submenu {
            padding-left: 30px;
            display: none;
            flex-direction: column;
            gap: 2px;
            overflow: hidden;
        }
        .sidebar-submenu.open { display: flex; }
        .sidebar.collapsed .sidebar-submenu { display: none !important; }

        .sidebar-submenu .sidebar-link {
            font-size: 0.775rem;
            padding: 7px 10px;
        }

        .sidebar-link .chevron {
            font-size: 0.7rem;
            color: var(--text-muted);
            transition: transform var(--transition-fast), opacity var(--transition-base);
            margin-left: auto;
            flex-shrink: 0;
        }
        .sidebar-link.open .chevron { transform: rotate(90deg); }
        .sidebar.collapsed .chevron { opacity: 0; }

        /* ── Sidebar bottom: user profile ── */
        .sidebar-footer {
            border-top: 1px solid var(--border);
            padding: 10px 8px;
            flex-shrink: 0;
        }

        .sidebar-user {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 10px;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: background var(--transition-fast);
            text-decoration: none;
            overflow: hidden;
            position: relative;
        }

        .sidebar-user:hover { background: var(--ink-700); }

        .user-avatar {
            width: 30px; height: 30px;
            min-width: 30px; min-height: 30px;
            max-width: 30px; max-height: 30px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--cyan-500), #8b5cf6);
            display: flex; align-items: center; justify-content: center;
            font-size: 0.7rem; font-weight: 700; color: white;
            flex-shrink: 0;
            overflow: hidden;
        }

        .user-avatar img {
            width: 30px !important;
            height: 30px !important;
            min-width: 30px;
            min-height: 30px;
            max-width: 30px !important;
            max-height: 30px !important;
            object-fit: cover;
            display: block;
            border-radius: 50%;
        }

        .sidebar-user-info {
            flex: 1;
            overflow: hidden;
            transition: opacity var(--transition-base);
        }
        .sidebar.collapsed .sidebar-user-info { opacity: 0; }

        .sidebar-user-name { font-size: 0.8rem; font-weight: 600; color: var(--text-primary); white-space: nowrap; }
        .sidebar-user-role {
            font-size: 0.65rem;
            color: var(--text-muted);
            white-space: nowrap;
            display: flex; align-items: center; gap: 5px;
        }

        .role-pill {
            background: rgba(6,182,212,0.12);
            border: 1px solid var(--border-accent);
            color: var(--cyan-400);
            padding: 1px 6px;
            border-radius: var(--radius-full);
            font-size: 0.6rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* ══════════════ TOPBAR ══════════════ */
        .topbar {
            position: fixed;
            top: 0;
            left: var(--sidebar-w);
            right: 0;
            height: var(--topbar-h);
            background: var(--ink-900);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 var(--spacing-xl);
            z-index: 1030;
            transition: left var(--transition-base);
        }
        .topbar.sidebar-collapsed { left: var(--sidebar-w-collapsed); }

        .topbar::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0; right: 0;
            height: 1px;
            background: linear-gradient(90deg, var(--cyan-600), transparent 60%);
        }

        /* Mobile hamburger */
        .topbar-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            width: 34px; height: 34px;
            align-items: center; justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .topbar-toggle:hover { border-color: var(--border-accent); color: var(--cyan-400); }

        /* Breadcrumb area */
        .topbar-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .topbar-breadcrumb .bc-sep { color: var(--text-muted); opacity: 0.4; }
        .topbar-breadcrumb .bc-current { color: var(--text-primary); font-weight: 600; }

        /* Topbar right actions */
        .topbar-actions {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .topbar-btn {
            display: flex; align-items: center; justify-content: center;
            width: 34px; height: 34px;
            background: var(--ink-700);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            cursor: pointer;
            position: relative;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            text-decoration: none;
            font-size: 0.95rem;
        }
        .topbar-btn:hover {
            border-color: var(--border-accent);
            color: var(--cyan-400);
            background: var(--ink-600);
            transform: translateY(-1px);
        }

        /* Notification bell smooth animations */
        #notifBtn {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        #notifBtn:hover i {
            animation: bellRing 0.5s ease-in-out;
        }
        #notifBtn i {
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes bellRing {
            0%, 100% { transform: rotate(0deg); }
            10%, 30% { transform: rotate(-10deg); }
            20%, 40% { transform: rotate(10deg); }
            50% { transform: rotate(-5deg); }
            60% { transform: rotate(5deg); }
            70% { transform: rotate(0deg); }
        }

        .topbar-btn .notif-dot {
            position: absolute;
            top: -3px; right: -3px;
            width: 8px; height: 8px;
            background: var(--danger);
            border-radius: 50%;
            border: 1.5px solid var(--ink-900);
            animation: notifPulse 2s ease-in-out infinite;
            box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
        }

        @keyframes notifPulse {
            0%, 100% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
            }
            50% {
                transform: scale(1.1);
                box-shadow: 0 0 0 4px rgba(239, 68, 68, 0);
            }
        }

        /* Theme toggle button */
        #themeToggle {
            font-size: 1rem;
            transition: transform 0.3s ease, color 0.3s ease;
        }
        #themeToggle:hover {
            transform: rotate(15deg);
        }
        body[data-theme="light"] #themeToggle {
            color: #f59e0b;
        }
        body[data-theme="dark"] #themeToggle {
            color: #60a5fa;
        }

        /* Smooth transitions for theme changes */
        .sidebar, .topbar, .content-wrapper, .sidebar-nav,
        .sidebar-link, .topbar-btn, .card, .table,
        .form-control, .form-select, .badge {
            transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
        }

        /* ══════════════════════════════════════════════════════════
           LIGHT MODE — Component Overrides
        ══════════════════════════════════════════════════════════ */

        /* Topbar in light mode */
        body[data-theme="light"] .topbar {
            background: #ffffff;
            border-bottom: 1px solid rgba(0,0,0,0.08);
        }

        body[data-theme="light"] .topbar::after {
            background: linear-gradient(90deg, #0891b2, transparent 60%);
        }

        /* Topbar breadcrumb */
        body[data-theme="light"] .topbar-breadcrumb {
            color: #64748b;
        }

        body[data-theme="light"] .topbar-breadcrumb .bc-current {
            color: #0f172a;
        }

        /* Topbar buttons */
        body[data-theme="light"] .topbar-btn {
            background: #f2f4f7;
            border-color: rgba(0,0,0,0.1);
            color: #4a5568;
        }

        body[data-theme="light"] .topbar-btn:hover {
            background: #e8ebef;
            border-color: rgba(6,182,212,0.4);
            color: #0891b2;
            transform: translateY(-1px);
        }

        body[data-theme="light"] .topbar-btn .notif-dot {
            border-color: #ffffff;
            box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.7);
        }

        /* Topbar user chip */
        body[data-theme="light"] .topbar-user {
            background: #f2f4f7;
            border-color: rgba(0,0,0,0.1);
        }

        body[data-theme="light"] .topbar-user:hover {
            background: #e8ebef;
            border-color: rgba(6,182,212,0.4);
        }

        body[data-theme="light"] .topbar-user-name {
            color: #0f172a;
        }

        body[data-theme="light"] .topbar-user-role {
            color: #64748b;
        }

        /* Topbar dropdown in light mode */
        body[data-theme="light"] .topbar-dropdown {
            background: #f2f4f7;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
        }

        body[data-theme="light"] .topbar-user-dropdown {
            background: #f2f4f7;
            border-color: rgba(0,0,0,0.1);
        }

        body[data-theme="light"] .tud-name {
            color: #0f172a;
        }

        body[data-theme="light"] .tud-role {
            color: #64748b;
        }

        body[data-theme="light"] .tud-item {
            color: #4a5568;
        }

        body[data-theme="light"] .tud-item:hover {
            background: rgba(6,182,212,0.08);
            color: #0f172a;
        }

        body[data-theme="light"] .tud-item:hover i {
            color: #0891b2;
        }

        body[data-theme="light"] .tud-item i {
            color: #64748b;
        }

        body[data-theme="light"] .tud-item.danger {
            color: #dc2626;
        }

        body[data-theme="light"] .tud-item.danger i {
            color: #dc2626;
        }

        body[data-theme="light"] .tud-divider {
            background: rgba(0,0,0,0.1);
        }

        /* Notification dropdown */
        body[data-theme="light"] .td-header {
            color: #64748b;
        }

        body[data-theme="light"] .td-header i {
            color: #0891b2;
        }

        body[data-theme="light"] .notif-item {
            border-bottom-color: rgba(0,0,0,0.08);
        }

        body[data-theme="light"] .notif-item:hover {
            background: rgba(6,182,212,0.12);
            padding-left: 18px;
        }

        body[data-theme="light"] .notif-item::before {
            background: #0891b2;
        }

        body[data-theme="light"] .notif-body strong {
            color: #0f172a;
        }

        body[data-theme="light"] .notif-body small {
            color: #64748b;
        }

        body[data-theme="light"] .td-footer a {
            color: #0891b2;
        }

        body[data-theme="light"] .td-footer a:hover {
            color: #0e7490;
        }

        /* Sidebar in light mode */
        body[data-theme="light"] .sidebar {
            background: #ffffff;
            border-right: 1px solid rgba(0,0,0,0.08);
        }

        /* Sidebar brand text */
        body[data-theme="light"] .brand-name-main {
            color: #0f172a;
        }

        body[data-theme="light"] .brand-name-sub {
            color: #64748b;
        }

        /* Section labels */
        body[data-theme="light"] .nav-section-label {
            color: #64748b;
        }

        /* Sidebar links */
        body[data-theme="light"] .sidebar-link {
            color: #4a5568;
        }

        body[data-theme="light"] .sidebar-link:hover {
            background: rgba(6,182,212,0.08);
            color: #0f172a;
            border-color: rgba(0,0,0,0.1);
        }

        body[data-theme="light"] .sidebar-link.active {
            background: rgba(6,182,212,0.12);
            color: #0891b2;
            border-color: rgba(6,182,212,0.4);
        }

        body[data-theme="light"] .sidebar-link.active::before {
            background: #0891b2;
        }

        /* Sidebar link icons */
        body[data-theme="light"] .sidebar-link .nav-icon {
            color: #64748b;
        }

        body[data-theme="light"] .sidebar-link:hover .nav-icon {
            color: #0891b2;
        }

        body[data-theme="light"] .sidebar-link.active .nav-icon {
            color: #0891b2;
        }

        /* Nav badges */
        body[data-theme="light"] .nav-badge {
            background: #dc2626;
            color: #ffffff;
        }

        /* Sidebar toggle button */
        body[data-theme="light"] .sidebar-toggle {
            background: #f2f4f7;
            border-color: rgba(0,0,0,0.1);
            color: #64748b;
        }

        body[data-theme="light"] .sidebar-toggle:hover {
            background: #e8ebef;
            border-color: rgba(6,182,212,0.4);
            color: #0891b2;
        }

        /* Sidebar footer - user profile */
        body[data-theme="light"] .sidebar-footer {
            border-top: 1px solid rgba(0,0,0,0.08);
        }

        body[data-theme="light"] .sidebar-user:hover {
            background: rgba(6,182,212,0.08);
        }

        body[data-theme="light"] .sidebar-user-name {
            color: #0f172a;
        }

        body[data-theme="light"] .sidebar-user-role {
            color: #64748b;
        }

        body[data-theme="light"] .role-pill {
            background: rgba(6,182,212,0.15);
            border-color: rgba(6,182,212,0.35);
            color: #0891b2;
        }

        /* Sidebar gradient accent line */
        body[data-theme="light"] .sidebar::after {
            background: linear-gradient(180deg, #0891b2 0%, #06b6d4 40%, transparent 100%);
        }

        /* Tables in light mode */
        body[data-theme="light"] .table thead th {
            background: #f1f5f9;
            color: #0f172a;
        }

        body[data-theme="light"] .table tbody tr:hover td {
            background: rgba(6,182,212,0.08);
        }

        /* Forms in light mode */
        body[data-theme="light"] .form-control,
        body[data-theme="light"] .form-select {
            background: #ffffff;
            border-color: rgba(0,0,0,0.15);
            color: #0f172a;
        }

        body[data-theme="light"] .form-control:focus,
        body[data-theme="light"] .form-select:focus {
            background: #ffffff;
            border-color: var(--cyan-500);
            box-shadow: 0 0 0 3px rgba(6,182,212,0.15);
        }

        /* Cards in light mode */
        body[data-theme="light"] .card,
        body[data-theme="light"] .card-modern {
            background: #ffffff;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }

        /* Modals in light mode */
        body[data-theme="light"] .modal-content {
            background: #ffffff;
        }

        /* Page header in light mode */
        body[data-theme="light"] .page-title i {
            background: rgba(6,182,212,0.15);
            color: var(--cyan-600);
        }

        /* Dropdown for notifications in topbar */
        .topbar-dropdown {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            width: 320px;
            background: var(--ink-800);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .topbar-dropdown.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .td-header {
            padding: 12px 14px;
            border-bottom: 1px solid var(--border);
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--text-muted);
            display: flex; align-items: center; gap: 6px;
        }
        .td-header i { color: var(--cyan-400); }

        .notif-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 14px;
            border-bottom: 1px solid var(--border);
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            text-decoration: none;
            position: relative;
        }
        .notif-item:hover {
            background: rgba(6,182,212,0.08);
            padding-left: 18px;
        }
        .notif-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--cyan-400);
            transform: scaleY(0);
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .notif-item:hover::before {
            transform: scaleY(1);
        }
        .notif-icon {
            width: 34px; height: 34px;
            border-radius: var(--radius-md);
            display: flex; align-items: center; justify-content: center;
            font-size: 0.9rem; flex-shrink: 0;
            transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
        }
        .notif-item:hover .notif-icon {
            transform: scale(1.1) rotate(-5deg);
        }
        .notif-icon.warn { background: var(--warning-light); color: var(--warning); }
        .notif-icon.ok   { background: var(--success-light); color: var(--success); }
        .notif-body strong { display: block; font-size: 0.8rem; color: var(--text-primary); }
        .notif-body small  { display: block; font-size: 0.7rem;  color: var(--text-muted); margin-top: 1px; }

        .td-footer {
            padding: 10px 14px;
            text-align: center;
        }
        .td-footer a {
            font-size: 0.78rem; font-weight: 600;
            color: var(--cyan-400); text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            display: inline-block;
        }
        .td-footer a:hover {
            color: var(--cyan-300);
            transform: translateX(4px);
        }

        /* User chip in topbar */
        .topbar-user {
            display: flex; align-items: center; gap: 8px;
            padding: 4px 10px 4px 5px;
            background: var(--ink-700);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            position: relative;
        }
        .topbar-user:hover { border-color: var(--border-accent); background: var(--ink-600); }

        .topbar-user-info { display: flex; flex-direction: column; line-height: 1.15; }
        .topbar-user-name { font-size: 0.75rem; font-weight: 600; color: var(--text-primary); }
        .topbar-user-role { font-size: 0.62rem; color: var(--text-muted); }

        .topbar-user-dropdown {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            width: 220px;
            background: var(--ink-800);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            z-index: 2000;
            display: none;
            overflow: hidden;
        }
        .topbar-user-dropdown.show { display: block; }

        .tud-header {
            padding: 12px 14px;
            border-bottom: 1px solid var(--border);
        }
        .tud-name { font-size: 0.8125rem; font-weight: 700; color: var(--text-primary); }
        .tud-role { font-size: 0.7rem; color: var(--text-muted); margin-top: 2px; }

        .tud-item {
            display: flex; align-items: center; gap: 9px;
            padding: 9px 14px;
            font-size: 0.8rem; font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition-fast);
        }
        .tud-item:hover { background: rgba(6,182,212,0.06); color: var(--text-primary); }
        .tud-item i { width: 16px; text-align: center; color: var(--text-muted); }
        .tud-item:hover i { color: var(--cyan-400); }
        .tud-item.danger { color: var(--danger); }
        .tud-item.danger i { color: var(--danger); }
        .tud-divider { height: 1px; background: var(--border); margin: 3px 0; }

        /* ══════════════ CONTENT WRAPPER ══════════════ */
        .content-wrapper {
            margin-left: var(--sidebar-w);
            margin-top: var(--topbar-h);
            flex: 1;
            min-height: calc(100vh - var(--topbar-h));
            display: flex;
            flex-direction: column;
            transition: margin-left var(--transition-base);
            max-width: calc(100vw - var(--sidebar-w));
            overflow-x: hidden;
        }
        .content-wrapper.sidebar-collapsed { margin-left: var(--sidebar-w-collapsed); }

        main {
            flex: 1;
            padding: var(--spacing-xl) 0;
            position: relative;
            z-index: auto;
        }

        /* ══════════════ MOBILE OVERLAY ══════════════ */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 1039;
            backdrop-filter: blur(2px);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .sidebar-overlay.show {
            display: block;
            opacity: 1;
        }

        /* ══════════════ ALERT TOASTS ══════════════ */
        .alert-container {
            position: fixed;
            top: calc(var(--topbar-h) + 12px);
            right: var(--spacing-xl);
            z-index: 1060;
            max-width: 380px;
            width: 100%;
            display: flex; flex-direction: column; gap: 8px;
        }

        .modern-alert {
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 12px 14px;
            display: flex; align-items: flex-start; gap: 10px;
            animation: slideInRight 0.3s cubic-bezier(0.34,1.56,0.64,1);
            backdrop-filter: blur(12px);
        }
        @keyframes slideInRight { from{transform:translateX(110%);opacity:0} to{transform:translateX(0);opacity:1} }

        .modern-alert i { font-size: 1.125rem; flex-shrink: 0; margin-top: 1px; }
        .modern-alert .alert-content { flex: 1; font-size: 0.8125rem; line-height: 1.5; color: var(--text-primary); }

        .modern-alert.alert-success { background: rgba(34,197,94,0.08);  border-color: rgba(34,197,94,0.3);  border-left: 3px solid var(--success); }
        .modern-alert.alert-success i { color: var(--success); }
        .modern-alert.alert-error, .modern-alert.alert-danger  { background: rgba(239,68,68,0.08);  border-color: rgba(239,68,68,0.3);  border-left: 3px solid var(--danger); }
        .modern-alert.alert-error i, .modern-alert.alert-danger i { color: var(--danger); }
        .modern-alert.alert-warning { background: rgba(245,158,11,0.08); border-color: rgba(245,158,11,0.3); border-left: 3px solid var(--warning); }
        .modern-alert.alert-warning i { color: var(--warning); }
        .modern-alert.alert-info    { background: rgba(59,130,246,0.08); border-color: rgba(59,130,246,0.3); border-left: 3px solid var(--info); }
        .modern-alert.alert-info i  { color: var(--info); }
        .modern-alert .btn-close { filter: invert(1); opacity: 0.4; width: 16px; height: 16px; background-size: 10px; }

        /* ══════════════ RE-USED COMPONENT STYLES ══════════════ */
        .content-container        { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-xl); }
        .content-container-narrow { max-width: 900px;  margin: 0 auto; padding: 0 var(--spacing-xl); }
        .content-container-wide   { max-width: 1400px; margin: 0 auto; padding: 0 var(--spacing-xl); }
        .container-form           { max-width: 900px;  margin: 0 auto; }
        .container-table          { max-width: 1400px; margin: 0 auto; }
        .container-reading        { max-width: 800px;  margin: 0 auto; }
        .container-responsive     { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-xl); }

        .card, .card-modern { background: var(--surface-800); border: 1px solid var(--border); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); transition: all var(--transition-base); color: var(--text-primary); }
        .card-modern:hover  { box-shadow: var(--shadow-glow); border-color: var(--border-accent); transform: translateY(-2px); }
        .card-header        { background: rgba(255,255,255,0.02); border-bottom: 1px solid var(--border); padding: 12px 18px; font-weight: 600; font-size: 0.875rem; color: var(--text-primary); }
        .card-body          { padding: 18px; }

        .form-control, .form-select { background: var(--ink-700); border: 1px solid var(--border); border-radius: var(--radius-md); color: var(--text-primary); font-family: var(--font-body); font-size: 0.875rem; padding: 8px 12px; transition: all var(--transition-fast); }
        .form-control::placeholder { color: var(--text-muted); }
        .form-control:focus, .form-select:focus { border-color: var(--cyan-600); background: var(--ink-600); box-shadow: 0 0 0 3px rgba(6,182,212,0.12); color: var(--text-primary); outline: none; }
        .form-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 5px; }

        .table { color: var(--text-secondary); border-color: var(--border); font-size: 0.8125rem; }
        .table thead th { background: var(--ink-800); color: var(--text-muted); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; border-bottom: 2px solid var(--border); padding: 10px 14px; white-space: nowrap; }
        .table td { border-color: var(--border); padding: 10px 14px; vertical-align: middle; color: var(--text-secondary); }
        .table tbody tr { transition: background var(--transition-fast); cursor: pointer; }
        .table tbody tr:hover td { background: rgba(6,182,212,0.04); color: var(--text-primary); }
        .table-wrapper { background: var(--surface-800); border: 1px solid var(--border); border-radius: var(--radius-xl); overflow: hidden; }

        .btn-primary { background: linear-gradient(135deg, var(--cyan-600) 0%, var(--cyan-700) 100%); border: none; border-radius: var(--radius-md); padding: 8px var(--spacing-lg); font-family: var(--font-body); font-size: 0.8125rem; font-weight: 600; color: white; transition: all var(--transition-base); box-shadow: 0 2px 8px rgba(6,182,212,0.3); }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(6,182,212,0.4); background: linear-gradient(135deg, var(--cyan-500) 0%, var(--cyan-600) 100%); color: white; }
        .btn-success { background: linear-gradient(135deg, var(--success), #16a34a); border: none; color: white; font-weight: 600; border-radius: var(--radius-md); }
        .btn-success:hover { transform: translateY(-1px); filter: brightness(1.05); color: white; }
        .btn-danger  { background: linear-gradient(135deg, var(--danger), #dc2626); border: none; color: white; font-weight: 600; border-radius: var(--radius-md); }
        .btn-danger:hover  { transform: translateY(-1px); filter: brightness(1.05); color: white; }
        .btn-ghost, .btn-outline-secondary { background: transparent; border: 1px solid var(--border); color: var(--text-secondary); border-radius: var(--radius-md); font-size: 0.8125rem; font-weight: 500; }
        .btn-ghost:hover, .btn-outline-secondary:hover { background: var(--ink-700); border-color: rgba(255,255,255,0.12); color: var(--text-primary); }
        .btn-outline-primary { background: transparent; border: 1px solid var(--border-accent); color: var(--cyan-400); border-radius: var(--radius-md); font-size: 0.8125rem; font-weight: 600; }
        .btn-outline-primary:hover { background: rgba(6,182,212,0.1); color: var(--cyan-300); }

        .badge { font-family: var(--font-body); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.4px; padding: 3px 9px; border-radius: 3px; }
        .badge-success,.bg-success { background: var(--success-light) !important; color: #4ade80 !important; border: 1px solid rgba(34,197,94,0.25); }
        .badge-warning,.bg-warning { background: var(--warning-light) !important; color: #fbbf24 !important; border: 1px solid rgba(245,158,11,0.25); }
        .badge-danger, .bg-danger  { background: var(--danger-light)  !important; color: #f87171 !important; border: 1px solid rgba(239,68,68,0.25); }
        .badge-info,   .bg-info    { background: var(--info-light)    !important; color: #60a5fa !important; border: 1px solid rgba(59,130,246,0.25); }
        .badge-primary,.bg-primary { background: rgba(6,182,212,0.12) !important; color: var(--cyan-400) !important; border: 1px solid var(--border-accent); }

        .text-gradient { background: linear-gradient(135deg, var(--cyan-400) 0%, var(--cyan-300) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .text-muted    { color: var(--text-muted)    !important; }
        .text-primary  { color: var(--cyan-400)      !important; }
        .text-success  { color: var(--success)        !important; }
        .text-warning  { color: var(--warning)        !important; }
        .text-danger   { color: var(--danger)          !important; }
        .text-white    { color: var(--text-primary)   !important; }
        .bg-light      { background: var(--ink-700)   !important; }
        .bg-white      { background: var(--surface-800)!important; }
        .border        { border-color: var(--border)  !important; }

        .alert-success { background: rgba(34,197,94,0.08);  border-color: rgba(34,197,94,0.3);  color: #4ade80; }
        .alert-danger  { background: rgba(239,68,68,0.08);  border-color: rgba(239,68,68,0.3);  color: #f87171; }
        .alert-warning { background: rgba(245,158,11,0.08); border-color: rgba(245,158,11,0.3); color: #fbbf24; }
        .alert-info    { background: rgba(59,130,246,0.08); border-color: rgba(59,130,246,0.3); color: #60a5fa; }

        .font-mono { font-family: var(--font-mono); }

        .page-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: var(--spacing-lg); gap: var(--spacing-md); flex-wrap: wrap; }
        .page-title  { font-size: 1.375rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.3px; display: flex; align-items: center; gap: 10px; }
        .page-title i { width: 36px; height: 36px; background: rgba(6,182,212,0.12); border: 1px solid var(--border-accent); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1rem; color: var(--cyan-400); }
        .page-subtitle { font-size: 0.8125rem; color: var(--text-muted); margin-top: 3px; }
        .page-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

        .section-divider { height: 1px; background: linear-gradient(90deg, var(--border-accent), var(--border), transparent); margin: var(--spacing-lg) 0; }

        .loading { display: inline-block; width: 18px; height: 18px; border: 2px solid rgba(6,182,212,0.2); border-top-color: var(--cyan-400); border-radius: 50%; animation: spin 0.7s linear infinite; }
        @keyframes spin { to { transform: rotate(360deg); } }

        .pagination .page-item .page-link { background: var(--ink-700); border-color: var(--border); color: var(--text-secondary); font-size: 0.8125rem; }
        .pagination .page-item.active .page-link { background: var(--cyan-600); border-color: var(--cyan-600); color: white; }
        .pagination .page-item .page-link:hover { background: var(--ink-600); color: var(--cyan-400); border-color: var(--border-accent); }

        /* ══════════════ FOOTER ══════════════ */
        .modern-footer {
            background: var(--ink-900);
            color: var(--text-secondary);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            border-top: 1px solid var(--border);
            position: relative;
        }
        .modern-footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--cyan-700), var(--cyan-500) 40%, transparent); }

        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--spacing-xl); margin-bottom: var(--spacing-xl); }
        .footer-section h5 { color: var(--text-primary); font-size: 0.8125rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: var(--spacing-md); }
        .footer-section p, .footer-section a { color: var(--text-muted); font-size: 0.8125rem; text-decoration: none; display: block; margin-bottom: var(--spacing-sm); transition: color var(--transition-fast); }
        .footer-section a:hover { color: var(--cyan-400); }
        .footer-logo { display: flex; align-items: center; gap: 10px; font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: var(--spacing-md); }
        .footer-logo .brand-mark-sm { width: 28px; height: 28px; background: linear-gradient(135deg, var(--cyan-500), var(--cyan-700)); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 0.875rem; }
        .footer-divider { height: 1px; background: var(--border); margin: var(--spacing-lg) 0; }
        .footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--spacing-sm); font-size: 0.75rem; color: var(--text-muted); }
        .version-pill { background: var(--ink-700); border: 1px solid var(--border); border-radius: var(--radius-full); padding: 2px 9px; font-size: 0.65rem; font-weight: 700; color: var(--cyan-400); letter-spacing: 0.5px; }
        .status-online { display: flex; align-items: center; gap: 5px; font-size: 0.72rem; color: var(--success); }
        .status-online::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--success); box-shadow: 0 0 6px rgba(34,197,94,0.5); animation: statusPulse 2s ease-in-out infinite; }
        @keyframes statusPulse { 0%,100%{opacity:1}50%{opacity:0.4} }

        /* ══════════════ RESPONSIVE ══════════════ */
        @media (max-width: 991px) {
            .sidebar {
                transform: translateX(-100%);
                width: var(--sidebar-w) !important; /* always full width when open on mobile */
            }
            .sidebar.mobile-open { transform: translateX(0); }

            .topbar { left: 0 !important; }
            .content-wrapper {
                margin-left: 0 !important;
                max-width: 100vw !important;
                overflow-x: hidden !important;
            }
            .topbar-toggle { display: flex; }
            .topbar-breadcrumb { display: none; }

            .alert-container { right: 12px; left: 12px; max-width: none; }
            .footer-content { grid-template-columns: 1fr; text-align: center; }
            .footer-logo { justify-content: center; }
            .footer-bottom { justify-content: center; }
        }

        @media (max-width: 576px) {
            .topbar { padding: 0 12px; }
            .content-container, .container-responsive { padding: 0 12px; }
            main { padding: var(--spacing-lg) 0; }
        }

        /* ══════════════════════════════════════════════════════════
           ENHANCED MOBILE RESPONSIVENESS
           Optimized for phones and tablets
        ══════════════════════════════════════════════════════════ */

        /* Mobile viewport safe areas (for devices with notches) */
        @supports (padding: max(0px)) {
            body {
                padding-left: max(0px, env(safe-area-inset-left));
                padding-right: max(0px, env(safe-area-inset-right));
            }
            .sidebar { left: env(safe-area-inset-left, 0); }
            .topbar {
                padding-left: max(12px, env(safe-area-inset-left));
                padding-right: max(12px, env(safe-area-inset-right));
            }
        }

        /* Enhanced touch targets for mobile */
        @media (max-width: 991px) {
            /* Larger touch targets */
            .sidebar-link {
                padding: 12px 10px;
                min-height: 44px;
            }
            .topbar-btn {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
            .topbar-toggle {
                width: 40px;
                height: 40px;
                font-size: 1.2rem;
            }
            .btn, .btn-primary, .btn-success, .btn-danger, .btn-ghost {
                padding: 12px 20px;
                font-size: 0.9rem;
                min-height: 44px;
            }

            /* Better mobile typography */
            body { font-size: 15px; }
            .page-title { font-size: 1.5rem; }
            .page-subtitle { font-size: 0.875rem; }
            h1 { font-size: 1.75rem; }
            h2 { font-size: 1.375rem; }
            h3 { font-size: 1.125rem; }

            /* Mobile spacing adjustments */
            .card-body { padding: 16px; }
            .page-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .page-actions {
                width: 100%;
                justify-content: stretch;
            }
            .page-actions .btn {
                flex: 1;
                min-width: 0;
            }

            /* Mobile sidebar improvements */
            .sidebar {
                box-shadow: var(--shadow-2xl);
            }
            .sidebar-brand {
                height: 64px;
            }

            /* Mobile-friendly alerts */
            .alert-container {
                top: calc(var(--topbar-h) + 8px);
            }
            .modern-alert {
                padding: 14px 16px;
                font-size: 0.875rem;
            }
        }

        /* Extra small devices (phones in portrait) */
        @media (max-width: 576px) {
            /* Responsive tables with horizontal scroll */
            .table-wrapper {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                position: relative;
            }

            /* Scroll shadow indicators */
            .table-wrapper::before,
            .table-wrapper::after {
                content: '';
                position: sticky;
                top: 0;
                bottom: 0;
                width: 20px;
                z-index: 1;
                pointer-events: none;
                transition: opacity 0.3s;
            }
            .table-wrapper::before {
                left: 0;
                background: linear-gradient(90deg, var(--surface-800) 0%, transparent 100%);
            }
            .table-wrapper::after {
                right: 0;
                background: linear-gradient(270deg, var(--surface-800) 0%, transparent 100%);
            }

            .table {
                min-width: 600px;
                font-size: 0.8rem;
            }
            .table th, .table td {
                padding: 8px 10px;
                white-space: nowrap;
            }

            /* Mobile form improvements */
            .form-control, .form-select {
                font-size: 16px;  /* Prevents zoom on iOS */
                padding: 12px 14px;
                min-height: 44px;
            }
            .form-label {
                font-size: 0.8125rem;
                margin-bottom: 6px;
            }
            textarea.form-control {
                min-height: 120px;
            }

            /* Stack form buttons vertically */
            .form-actions,
            .btn-group {
                display: flex;
                flex-direction: column;
                gap: 10px;
            }
            .form-actions .btn,
            .btn-group .btn {
                width: 100%;
            }

            /* Mobile card adjustments */
            .card {
                border-radius: var(--radius-lg);
                margin-bottom: 16px;
            }
            .card-header {
                padding: 12px 16px;
                font-size: 0.875rem;
            }

            /* Mobile badge sizing */
            .badge {
                font-size: 0.7rem;
                padding: 4px 10px;
            }

            /* Mobile footer */
            .modern-footer {
                padding: var(--spacing-xl) 0 var(--spacing-md);
            }
            .footer-content {
                gap: var(--spacing-lg);
            }
            .footer-section {
                text-align: center;
            }

            /* Topbar adjustments for small screens */
            .topbar-actions {
                gap: 4px;
            }
            .topbar-actions .topbar-btn {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }

            /* Hide less important elements on very small screens */
            .page-subtitle { font-size: 0.8125rem; }
            .nav-section-label { font-size: 0.65rem; }
        }

        /* Landscape phones */
        @media (max-width: 768px) and (orientation: landscape) {
            .topbar { height: 48px; }
            :root { --topbar-h: 48px; }
            .sidebar-brand { height: 56px; }
            main { padding: var(--spacing-md) 0; }
        }

        /* Prevent text size adjustment on orientation change (iOS) */
        @media screen and (max-width: 991px) {
            html {
                -webkit-text-size-adjust: 100%;
                -moz-text-size-adjust: 100%;
                text-size-adjust: 100%;
            }
        }

        /* Smooth scrolling for mobile */
        @media (max-width: 991px) {
            body {
                overflow-x: hidden;
                -webkit-overflow-scrolling: touch;
            }
            .sidebar-nav {
                -webkit-overflow-scrolling: touch;
            }
        }

        /* Hover effects disabled on touch devices */
        @media (hover: none) and (pointer: coarse) {
            .sidebar-link:hover,
            .topbar-btn:hover,
            .btn:hover {
                transform: none;
            }
            /* Use active state instead */
            .sidebar-link:active {
                transform: scale(0.98);
            }
            .topbar-btn:active,
            .btn:active {
                transform: scale(0.95);
            }
        }

        /* ══════════════════════════════════════════════
           GLOBAL RESPONSIVE SYSTEM
           Single source of truth for all breakpoints
        ══════════════════════════════════════════════ */

        /* ── Extra Small: phones portrait (< 576px) ── */
        @media (max-width: 575px) {
            /* CRITICAL: Prevent horizontal scroll */
            html, body {
                overflow-x: hidden !important;
                max-width: 100vw !important;
                width: 100% !important;
            }

            /* Constrain all major containers */
            .app-shell,
            .content-wrapper,
            main,
            .content-container,
            .content-container-wide,
            .content-container-narrow {
                max-width: 100vw !important;
                overflow-x: hidden !important;
            }

            .hide-xs { display: none !important; }
            .col-xs-12 { width: 100% !important; }

            .page-header {
                flex-direction: column;
                gap: 8px;
            }
            .page-actions {
                width: 100%;
            }
            .page-actions .btn {
                flex: 1;
            }

            main { padding: 1rem 0; }
            .content-container,
            .content-container-wide { padding: 0 12px; max-width: 100%; }

            /* Force all cards and panels to fit */
            .card,
            .card-modern,
            .table-card,
            .filter-card,
            .stat-card,
            .chart-card {
                max-width: 100% !important;
                overflow-x: hidden !important;
            }

            /* Ensure tables don't overflow */
            .table-wrapper,
            .table-scroll-container,
            .table-card {
                max-width: 100% !important;
                overflow-x: auto !important;
            }
        }

        /* ── Small: phones landscape (576px–767px) ── */
        @media (min-width: 576px) and (max-width: 767px) {
            .hide-sm { display: none !important; }

            .content-container,
            .content-container-wide { padding: 0 16px; }
        }

        /* ── Medium: tablets (768px–1023px) ── */
        @media (min-width: 768px) and (max-width: 1023px) {
            .hide-md { display: none !important; }

            .content-container,
            .content-container-wide { padding: 0 20px; }
        }

        /* ── Large: small laptops (1024px–1279px) ── */
        @media (min-width: 1024px) and (max-width: 1279px) {
            .hide-lg { display: none !important; }
        }

        /* ── Extra Large: desktops (≥ 1280px) ── */
        @media (min-width: 1280px) {
            .hide-xl { display: none !important; }
        }

        /* ── Shared mobile (< 768px) ── */
        @media (max-width: 767px) {
            /* CRITICAL: Prevent horizontal scroll on all mobile devices */
            html, body {
                overflow-x: hidden !important;
                max-width: 100vw !important;
            }

            /* Constrain all containers */
            * {
                max-width: 100vw;
            }

            .app-shell,
            .content-wrapper,
            main {
                max-width: 100vw !important;
                overflow-x: hidden !important;
            }

            .table-responsive-stack { overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; }
            .card-grid { grid-template-columns: 1fr !important; }
            .form-row { flex-direction: column; }
            .modal-dialog { margin: 0; max-width: 100%; }
            .modal-content { border-radius: 0; min-height: 100vh; }

            /* Images and media */
            video, iframe {
                max-width: 100% !important;
                height: auto !important;
            }
            img {
                max-width: 100%;
                height: auto;
            }

            /* Prevent text overflow */
            pre, code {
                max-width: 100%;
                overflow-x: auto;
                word-wrap: break-word;
            }
        }

        /* ── Shared tablet and below (< 1024px) ── */
        @media (max-width: 1023px) {
            .hide-below-lg { display: none !important; }
            .grid-2col { grid-template-columns: 1fr !important; }
        }

        @media print {
            .sidebar, .topbar, .alert-container, .page-actions { display: none !important; }
            .content-wrapper { margin-left: 0 !important; margin-top: 0 !important; }
            .card, .card-modern { box-shadow: none !important; border: 1px solid #ddd !important; background: white !important; }
            .table { color: black !important; }
            .table thead th { background: #f5f5f5 !important; color: black !important; }
        }