/* ============================================================
   KEYSTONE DESIGN SYSTEM v2.0
   Education-first, accessible, responsive design system
   8-color palette + Day/Night theme + Custom color support
   ============================================================ */

/* ===== CSS RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ===== ROOT VARIABLES - LIGHT THEME (DEFAULT) ===== */
:root {
    /* === 8-COLOR PALETTE === */
    /* 1. Primary - Trust, Wisdom (Indigo) */
    --ks-primary-50:  #eef2ff;
    --ks-primary-100: #e0e7ff;
    --ks-primary-200: #c7d2fe;
    --ks-primary-300: #a5b4fc;
    --ks-primary-400: #818cf8;
    --ks-primary-500: #6366f1;
    --ks-primary-600: #4f46e5;
    --ks-primary-700: #4338ca;
    --ks-primary-800: #3730a3;
    --ks-primary-900: #312e81;

    /* 2. Secondary - Growth, Nature (Emerald) */
    --ks-secondary-50:  #ecfdf5;
    --ks-secondary-100: #d1fae5;
    --ks-secondary-200: #a7f3d0;
    --ks-secondary-300: #6ee7b7;
    --ks-secondary-400: #34d399;
    --ks-secondary-500: #10b981;
    --ks-secondary-600: #059669;
    --ks-secondary-700: #047857;
    --ks-secondary-800: #065f46;
    --ks-secondary-900: #064e3b;

    /* 3. Accent - Energy, Creativity (Amber) */
    --ks-accent-50:  #fffbeb;
    --ks-accent-100: #fef3c7;
    --ks-accent-200: #fde68a;
    --ks-accent-300: #fcd34d;
    --ks-accent-400: #fbbf24;
    --ks-accent-500: #f59e0b;
    --ks-accent-600: #d97706;
    --ks-accent-700: #b45309;
    --ks-accent-800: #92400e;
    --ks-accent-900: #78350f;

    /* 4. Info - Calm, Knowledge (Sky) */
    --ks-info-50:  #f0f9ff;
    --ks-info-100: #e0f2fe;
    --ks-info-200: #bae6fd;
    --ks-info-300: #7dd3fc;
    --ks-info-400: #38bdf8;
    --ks-info-500: #0ea5e9;
    --ks-info-600: #0284c7;
    --ks-info-700: #0369a1;
    --ks-info-800: #075985;
    --ks-info-900: #0c4a6e;

    /* 5. Success - Achievement (Green) */
    --ks-success-50:  #f0fdf4;
    --ks-success-100: #dcfce7;
    --ks-success-200: #bbf7d0;
    --ks-success-300: #86efac;
    --ks-success-400: #4ade80;
    --ks-success-500: #22c55e;
    --ks-success-600: #16a34a;
    --ks-success-700: #15803d;
    --ks-success-800: #166534;
    --ks-success-900: #14532d;

    /* 6. Warning - Attention (Orange) */
    --ks-warning-50:  #fff7ed;
    --ks-warning-100: #ffedd5;
    --ks-warning-200: #fed7aa;
    --ks-warning-300: #fdba74;
    --ks-warning-400: #fb923c;
    --ks-warning-500: #f97316;
    --ks-warning-600: #ea580c;
    --ks-warning-700: #c2410c;
    --ks-warning-800: #9a3412;
    --ks-warning-900: #7c2d12;

    /* 7. Danger - Alert (Rose) */
    --ks-danger-50:  #fff1f2;
    --ks-danger-100: #ffe4e6;
    --ks-danger-200: #fecdd3;
    --ks-danger-300: #fda4af;
    --ks-danger-400: #fb7185;
    --ks-danger-500: #f43f5e;
    --ks-danger-600: #e11d48;
    --ks-danger-700: #be123c;
    --ks-danger-800: #9f1239;
    --ks-danger-900: #881337;

    /* 8. Neutral - Balance (Slate) */
    --ks-neutral-50:  #f8fafc;
    --ks-neutral-100: #f1f5f9;
    --ks-neutral-200: #e2e8f0;
    --ks-neutral-300: #cbd5e1;
    --ks-neutral-400: #94a3b8;
    --ks-neutral-500: #64748b;
    --ks-neutral-600: #475569;
    --ks-neutral-700: #334155;
    --ks-neutral-800: #1e293b;
    --ks-neutral-900: #0f172a;

    /* === SEMANTIC TOKENS (Light Theme) === */
    --sidebar-width: 268px;
    --sidebar-collapsed: 72px;
    --topbar-height: 64px;

    /* Backgrounds */
    --bg-body: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f8fafc;
    --bg-surface-raised: #ffffff;
    --bg-sidebar: #0f172a;
    --bg-sidebar-hover: #1e293b;
    --bg-sidebar-active: rgba(99, 102, 241, 0.15);
    --bg-topbar: rgba(255, 255, 255, 0.85);
    --bg-input: #f8fafc;
    --bg-input-focus: #ffffff;
    --bg-overlay: rgba(15, 23, 42, 0.5);
    --bg-skeleton: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);

    /* Text */
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-disabled: #94a3b8;
    --text-inverse: #ffffff;
    --text-sidebar: #94a3b8;
    --text-sidebar-active: #ffffff;
    --text-link: var(--ks-primary-600);
    --text-link-hover: var(--ks-primary-700);

    /* Borders */
    --border-default: #e2e8f0;
    --border-light: #f1f5f9;
    --border-focus: var(--ks-primary-500);
    --border-input: #e2e8f0;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
    --shadow-card-hover: 0 12px 24px -4px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

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

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.875rem;
    --font-size-md: 0.9375rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.125rem;
    --font-size-2xl: 1.25rem;
    --font-size-3xl: 1.5rem;
    --font-size-4xl: 1.875rem;
    --font-size-5xl: 2.25rem;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;

    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-topbar: 1030;
    --z-overlay: 1035;
    --z-sidebar: 1040;
    --z-modal: 1050;
    --z-toast: 1060;
}

/* ===== DARK THEME ===== */
[data-theme="dark"] {
    --bg-body: #0c1222;
    --bg-surface: #151d2e;
    --bg-surface-hover: #1a2438;
    --bg-surface-raised: #1e293b;
    --bg-sidebar: #0a0f1a;
    --bg-sidebar-hover: #151d2e;
    --bg-sidebar-active: rgba(99, 102, 241, 0.2);
    --bg-topbar: rgba(21, 29, 46, 0.9);
    --bg-input: #1a2438;
    --bg-input-focus: #1e293b;
    --bg-overlay: rgba(0, 0, 0, 0.7);
    --bg-skeleton: linear-gradient(90deg, #1a2438 25%, #1e293b 50%, #1a2438 75%);

    --text-primary: #e8edf5;
    --text-secondary: #b8c5d6;
    --text-muted: #7a8ba3;
    --text-disabled: #4a5568;
    --text-sidebar: #7a8ba3;
    --text-sidebar-active: #ffffff;
    --text-link: var(--ks-primary-400);
    --text-link-hover: var(--ks-primary-300);

    --border-default: #1e293b;
    --border-light: #151d2e;
    --border-input: #2a3548;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.35), 0 4px 6px -4px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.25);
    --shadow-card-hover: 0 12px 24px -4px rgba(0, 0, 0, 0.4);

    color-scheme: dark;
}

/* ===== KEYFRAMES / ANIMATIONS ===== */
@keyframes ks-fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes ks-fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes ks-fadeInDown {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes ks-fadeInLeft {
    from { opacity: 0; transform: translateX(-12px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes ks-fadeInRight {
    from { opacity: 0; transform: translateX(12px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes ks-scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes ks-slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes ks-shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes ks-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes ks-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

@keyframes ks-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes ks-ripple {
    0% { transform: scale(0); opacity: 0.5; }
    100% { transform: scale(4); opacity: 0; }
}

@keyframes ks-countUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes ks-progressBar {
    from { width: 0%; }
}

@keyframes ks-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes ks-gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ===== GLOBAL STYLES ===== */
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

::selection {
    background: var(--ks-primary-200);
    color: var(--ks-primary-900);
}

[data-theme="dark"] ::selection {
    background: var(--ks-primary-700);
    color: var(--ks-primary-100);
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--ks-primary-500);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--ks-neutral-300);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--ks-neutral-400); }

[data-theme="dark"] ::-webkit-scrollbar-thumb { background: var(--ks-neutral-700); }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: var(--ks-neutral-600); }

/* ===== SIDEBAR ===== */
.ks-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    z-index: var(--z-sidebar);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base), width var(--transition-base);
    overflow: hidden;
    border-right: 1px solid rgba(255, 255, 255, 0.04);
}

.ks-sidebar-header {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.ks-sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #fff;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.ks-brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--ks-primary-500), var(--ks-primary-700));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    transition: transform var(--transition-spring);
}

.ks-sidebar-brand:hover .ks-brand-icon {
    transform: scale(1.05) rotate(-2deg);
}

.ks-sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4) var(--space-3);
}

.ks-sidebar-nav::-webkit-scrollbar { width: 3px; }
.ks-sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.08); border-radius: var(--radius-full); }

.ks-nav-section {
    font-size: 0.65rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(148, 163, 184, 0.45);
    padding: var(--space-4) var(--space-3) var(--space-2);
    white-space: nowrap;
}

.ks-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.ks-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--ks-primary-500);
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
    transition: height var(--transition-base);
}

.ks-nav-link:hover {
    background: var(--bg-sidebar-hover);
    color: #e2e8f0;
    text-decoration: none;
}

.ks-nav-link.active {
    background: var(--bg-sidebar-active);
    color: var(--text-sidebar-active);
}

.ks-nav-link.active::before {
    height: 20px;
}

.ks-nav-link.active i {
    color: var(--ks-primary-400);
}

.ks-nav-link i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.ks-nav-link:hover i {
    transform: scale(1.08);
}

.ks-nav-badge {
    margin-left: auto;
    font-size: 0.65rem;
    font-weight: var(--font-weight-bold);
    background: var(--ks-primary-600);
    color: #fff;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    min-width: 20px;
    text-align: center;
    line-height: 1.3;
}

/* Sidebar Footer / User */
.ks-sidebar-footer {
    padding: var(--space-3);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.ks-sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--text-sidebar);
    text-decoration: none;
    transition: background var(--transition-fast);
    cursor: pointer;
}

.ks-sidebar-user:hover {
    background: var(--bg-sidebar-hover);
}

.ks-user-avatar {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--ks-primary-500), var(--ks-secondary-500));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-base);
    flex-shrink: 0;
    transition: transform var(--transition-spring);
}

.ks-sidebar-user:hover .ks-user-avatar {
    transform: scale(1.05);
}

.ks-user-info { overflow: hidden; white-space: nowrap; }
.ks-user-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: #e2e8f0;
    text-overflow: ellipsis;
    overflow: hidden;
}
.ks-user-role {
    font-size: var(--font-size-xs);
    color: var(--text-sidebar);
}

/* ===== TOPBAR ===== */
.ks-topbar {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--topbar-height);
    background: var(--bg-topbar);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-default);
    z-index: var(--z-topbar);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-6);
    transition: left var(--transition-base), background var(--transition-base);
}

.ks-topbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.ks-topbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.ks-sidebar-toggle {
    display: none;
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), color var(--transition-fast);
    line-height: 1;
}

.ks-sidebar-toggle:hover {
    background: var(--ks-primary-50);
    color: var(--ks-primary-600);
}

[data-theme="dark"] .ks-sidebar-toggle:hover {
    background: rgba(99, 102, 241, 0.15);
    color: var(--ks-primary-400);
}

.ks-breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.ks-breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.ks-breadcrumb a:hover { color: var(--text-link); }

.ks-page-title {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: var(--font-size-md);
}

/* Theme Toggle Button */
.ks-theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-default);
    background: var(--bg-surface);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.ks-theme-toggle:hover {
    border-color: var(--ks-primary-300);
    color: var(--ks-primary-600);
    background: var(--ks-primary-50);
    transform: scale(1.05);
}

[data-theme="dark"] .ks-theme-toggle:hover {
    border-color: var(--ks-primary-500);
    color: var(--ks-primary-400);
    background: rgba(99, 102, 241, 0.15);
}

.ks-theme-toggle .ks-icon-sun,
.ks-theme-toggle .ks-icon-moon { transition: all var(--transition-base); }

.ks-theme-toggle .ks-icon-sun { display: block; }
.ks-theme-toggle .ks-icon-moon { display: none; }

[data-theme="dark"] .ks-theme-toggle .ks-icon-sun { display: none; }
[data-theme="dark"] .ks-theme-toggle .ks-icon-moon { display: block; }

/* Color Customizer Toggle */
.ks-color-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-default);
    background: var(--bg-surface);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.ks-color-toggle:hover {
    border-color: var(--ks-accent-400);
    color: var(--ks-accent-600);
    background: var(--ks-accent-50);
    transform: scale(1.05);
}

[data-theme="dark"] .ks-color-toggle:hover {
    background: rgba(245, 158, 11, 0.15);
    color: var(--ks-accent-400);
}

/* Global Search */
.ks-search {
    position: relative;
    max-width: 400px;
}

.ks-search input {
    border: 1px solid var(--border-input);
    border-radius: var(--radius-md);
    padding: 9px 12px 9px 38px;
    font-size: var(--font-size-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    transition: all var(--transition-base);
    width: 230px;
    font-family: var(--font-family);
}

.ks-search input::placeholder {
    color: var(--text-disabled);
}

.ks-search input:focus {
    width: 320px;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
    outline: none;
    background: var(--bg-input-focus);
}

.ks-search i {
    position: absolute;
    left: 13px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
}

.ks-search-shortcut {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.65rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-muted);
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 5px;
    padding: 2px 6px;
    pointer-events: none;
}

/* Search Dropdown */
.ks-search-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    min-width: 340px;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    display: none;
    overflow: hidden;
    max-height: 440px;
    overflow-y: auto;
    animation: ks-fadeInDown var(--transition-fast) ease-out;
}

.ks-search-dropdown.show { display: block; }

.ks-search-result {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    text-decoration: none;
    color: var(--text-primary);
    transition: background var(--transition-fast);
    cursor: pointer;
    border-bottom: 1px solid var(--border-light);
}

.ks-search-result:hover,
.ks-search-result.active {
    background: var(--ks-primary-50);
    color: var(--text-primary);
    text-decoration: none;
}

[data-theme="dark"] .ks-search-result:hover,
[data-theme="dark"] .ks-search-result.active {
    background: rgba(99, 102, 241, 0.1);
}

.ks-search-result:last-child { border-bottom: none; }

.ks-search-section {
    padding: 8px 14px 4px;
    font-size: 0.65rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    background: var(--bg-surface-hover);
}

/* ===== MAIN CONTENT ===== */
.ks-main {
    margin-left: var(--sidebar-width);
    margin-top: var(--topbar-height);
    padding: var(--space-6);
    min-height: calc(100vh - var(--topbar-height));
    transition: margin-left var(--transition-base);
}

/* ===== SIDEBAR OVERLAY ===== */
.ks-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg-overlay);
    z-index: var(--z-overlay);
    opacity: 0;
    transition: opacity var(--transition-base);
    backdrop-filter: blur(4px);
}

.ks-overlay.show {
    display: block;
    opacity: 1;
}

/* ===== CARDS ===== */
.ks-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xs);
    transition: all var(--transition-base);
    overflow: hidden;
}

.ks-card:hover {
    box-shadow: var(--shadow-sm);
}

.ks-card-interactive:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
    border-color: var(--ks-primary-200);
}

[data-theme="dark"] .ks-card-interactive:hover {
    border-color: var(--ks-primary-700);
}

.ks-card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.ks-card-body { padding: var(--space-5) var(--space-6); }
.ks-card-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-default);
    background: var(--bg-surface-hover);
}

/* ===== STAT CARDS ===== */
.ks-stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-5) var(--space-6);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.ks-stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--ks-primary-50);
    transform: translate(30%, -30%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.ks-stat-card:hover::after { opacity: 1; }

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

.ks-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
    transition: transform var(--transition-spring);
}

.ks-stat-card:hover .ks-stat-icon {
    transform: scale(1.1) rotate(-3deg);
}

.ks-stat-icon.primary { background: var(--ks-primary-100); color: var(--ks-primary-600); }
.ks-stat-icon.secondary { background: var(--ks-secondary-100); color: var(--ks-secondary-600); }
.ks-stat-icon.accent { background: var(--ks-accent-100); color: var(--ks-accent-600); }
.ks-stat-icon.info { background: var(--ks-info-100); color: var(--ks-info-600); }
.ks-stat-icon.success { background: var(--ks-success-100); color: var(--ks-success-600); }
.ks-stat-icon.warning { background: var(--ks-warning-100); color: var(--ks-warning-600); }
.ks-stat-icon.danger { background: var(--ks-danger-100); color: var(--ks-danger-600); }
.ks-stat-icon.neutral { background: var(--ks-neutral-100); color: var(--ks-neutral-600); }

[data-theme="dark"] .ks-stat-icon.primary { background: rgba(99, 102, 241, 0.15); }
[data-theme="dark"] .ks-stat-icon.secondary { background: rgba(16, 185, 129, 0.15); }
[data-theme="dark"] .ks-stat-icon.accent { background: rgba(245, 158, 11, 0.15); }
[data-theme="dark"] .ks-stat-icon.info { background: rgba(14, 165, 233, 0.15); }
[data-theme="dark"] .ks-stat-icon.success { background: rgba(34, 197, 94, 0.15); }
[data-theme="dark"] .ks-stat-icon.warning { background: rgba(249, 115, 22, 0.15); }
[data-theme="dark"] .ks-stat-icon.danger { background: rgba(244, 63, 94, 0.15); }
[data-theme="dark"] .ks-stat-icon.neutral { background: rgba(100, 116, 139, 0.15); }

.ks-stat-content { flex: 1; min-width: 0; position: relative; z-index: 1; }

.ks-stat-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-1);
}

.ks-stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
    line-height: var(--line-height-tight);
    letter-spacing: -0.02em;
}

.ks-stat-change {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--space-1);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.ks-stat-change.up {
    color: var(--ks-success-700);
    background: var(--ks-success-50);
}

.ks-stat-change.down {
    color: var(--ks-danger-700);
    background: var(--ks-danger-50);
}

[data-theme="dark"] .ks-stat-change.up {
    color: var(--ks-success-400);
    background: rgba(34, 197, 94, 0.15);
}

[data-theme="dark"] .ks-stat-change.down {
    color: var(--ks-danger-400);
    background: rgba(244, 63, 94, 0.15);
}

/* ===== BUTTONS ===== */
.ks-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 9px 18px;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.ks-btn:active { transform: scale(0.97); }

/* Ripple effect on click */
.ks-btn .ks-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    animation: ks-ripple 0.6s ease-out forwards;
    pointer-events: none;
}

/* Button variants */
.ks-btn-primary {
    background: var(--ks-primary-600);
    color: #fff;
    border-color: var(--ks-primary-600);
    box-shadow: 0 1px 3px rgba(79, 70, 229, 0.3);
}
.ks-btn-primary:hover {
    background: var(--ks-primary-700);
    border-color: var(--ks-primary-700);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
}

.ks-btn-secondary {
    background: var(--ks-secondary-600);
    color: #fff;
    border-color: var(--ks-secondary-600);
    box-shadow: 0 1px 3px rgba(5, 150, 105, 0.3);
}
.ks-btn-secondary:hover {
    background: var(--ks-secondary-700);
    border-color: var(--ks-secondary-700);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.35);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
}

.ks-btn-accent {
    background: var(--ks-accent-500);
    color: #fff;
    border-color: var(--ks-accent-500);
}
.ks-btn-accent:hover {
    background: var(--ks-accent-600);
    border-color: var(--ks-accent-600);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
}

.ks-btn-danger {
    background: var(--ks-danger-600);
    color: #fff;
    border-color: var(--ks-danger-600);
}
.ks-btn-danger:hover {
    background: var(--ks-danger-700);
    border-color: var(--ks-danger-700);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
}

.ks-btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-default);
}
.ks-btn-outline:hover {
    background: var(--bg-surface-hover);
    border-color: var(--ks-primary-300);
    color: var(--ks-primary-600);
    text-decoration: none;
}

.ks-btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border-color: transparent;
}
.ks-btn-ghost:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
    text-decoration: none;
}

.ks-btn-sm { padding: 6px 12px; font-size: var(--font-size-xs); }
.ks-btn-lg { padding: 12px 24px; font-size: var(--font-size-md); }
.ks-btn-icon { padding: 9px; min-width: 38px; }

/* ===== TABLES ===== */
.ks-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-default);
}

.ks-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.ks-table thead th {
    background: var(--bg-surface-hover);
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-default);
    white-space: nowrap;
    position: sticky;
    top: 0;
    z-index: 1;
}

.ks-table tbody td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    vertical-align: middle;
}

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

.ks-table tbody tr:hover {
    background: var(--bg-surface-hover);
}

.ks-table tbody tr:last-child td { border-bottom: none; }

/* ===== FORMS ===== */
.ks-form-group { margin-bottom: var(--space-5); }

.ks-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.ks-input,
.ks-select,
.ks-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-input);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-input);
    transition: all var(--transition-fast);
    line-height: var(--line-height-normal);
}

.ks-input::placeholder,
.ks-textarea::placeholder {
    color: var(--text-disabled);
}

.ks-input:focus,
.ks-select:focus,
.ks-textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
    outline: none;
    background: var(--bg-input-focus);
}

.ks-textarea { min-height: 100px; resize: vertical; }

.ks-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* File input */
.ks-file-input {
    border: 2px dashed var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-8) var(--space-6);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--bg-surface-hover);
}

.ks-file-input:hover {
    border-color: var(--ks-primary-400);
    background: var(--ks-primary-50);
}

[data-theme="dark"] .ks-file-input:hover {
    background: rgba(99, 102, 241, 0.05);
}

/* ===== BADGES ===== */
.ks-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    line-height: 1.4;
}

.ks-badge-primary { background: var(--ks-primary-100); color: var(--ks-primary-700); }
.ks-badge-secondary { background: var(--ks-secondary-100); color: var(--ks-secondary-700); }
.ks-badge-accent { background: var(--ks-accent-100); color: var(--ks-accent-700); }
.ks-badge-info { background: var(--ks-info-100); color: var(--ks-info-700); }
.ks-badge-success { background: var(--ks-success-100); color: var(--ks-success-700); }
.ks-badge-warning { background: var(--ks-warning-100); color: var(--ks-warning-700); }
.ks-badge-danger { background: var(--ks-danger-100); color: var(--ks-danger-700); }
.ks-badge-neutral { background: var(--ks-neutral-100); color: var(--ks-neutral-700); }

[data-theme="dark"] .ks-badge-primary { background: rgba(99, 102, 241, 0.15); color: var(--ks-primary-300); }
[data-theme="dark"] .ks-badge-secondary { background: rgba(16, 185, 129, 0.15); color: var(--ks-secondary-300); }
[data-theme="dark"] .ks-badge-accent { background: rgba(245, 158, 11, 0.15); color: var(--ks-accent-300); }
[data-theme="dark"] .ks-badge-info { background: rgba(14, 165, 233, 0.15); color: var(--ks-info-300); }
[data-theme="dark"] .ks-badge-success { background: rgba(34, 197, 94, 0.15); color: var(--ks-success-300); }
[data-theme="dark"] .ks-badge-warning { background: rgba(249, 115, 22, 0.15); color: var(--ks-warning-300); }
[data-theme="dark"] .ks-badge-danger { background: rgba(244, 63, 94, 0.15); color: var(--ks-danger-300); }
[data-theme="dark"] .ks-badge-neutral { background: rgba(100, 116, 139, 0.15); color: var(--ks-neutral-300); }

/* ===== ALERTS ===== */
.ks-alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    border: 1px solid;
    animation: ks-fadeInDown var(--transition-base) ease-out;
    margin-bottom: var(--space-4);
}

.ks-alert-success {
    background: var(--ks-success-50);
    border-color: var(--ks-success-200);
    color: var(--ks-success-800);
}

.ks-alert-danger, .ks-alert-error {
    background: var(--ks-danger-50);
    border-color: var(--ks-danger-200);
    color: var(--ks-danger-800);
}

.ks-alert-warning {
    background: var(--ks-warning-50);
    border-color: var(--ks-warning-200);
    color: var(--ks-warning-800);
}

.ks-alert-info {
    background: var(--ks-info-50);
    border-color: var(--ks-info-200);
    color: var(--ks-info-800);
}

[data-theme="dark"] .ks-alert-success { background: rgba(34, 197, 94, 0.1); border-color: rgba(34, 197, 94, 0.2); color: var(--ks-success-300); }
[data-theme="dark"] .ks-alert-danger, [data-theme="dark"] .ks-alert-error { background: rgba(244, 63, 94, 0.1); border-color: rgba(244, 63, 94, 0.2); color: var(--ks-danger-300); }
[data-theme="dark"] .ks-alert-warning { background: rgba(249, 115, 22, 0.1); border-color: rgba(249, 115, 22, 0.2); color: var(--ks-warning-300); }
[data-theme="dark"] .ks-alert-info { background: rgba(14, 165, 233, 0.1); border-color: rgba(14, 165, 233, 0.2); color: var(--ks-info-300); }

.ks-alert i { font-size: 1.25rem; flex-shrink: 0; margin-top: 1px; }

.ks-alert-close {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    opacity: 0.5;
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: opacity var(--transition-fast);
    font-size: 1.1rem;
    line-height: 1;
}

.ks-alert-close:hover { opacity: 1; }

/* ===== PROGRESS BAR ===== */
.ks-progress {
    height: 8px;
    background: var(--ks-neutral-100);
    border-radius: var(--radius-full);
    overflow: hidden;
}

[data-theme="dark"] .ks-progress { background: var(--ks-neutral-800); }

.ks-progress-bar {
    height: 100%;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, var(--ks-primary-500), var(--ks-primary-600));
    transition: width var(--transition-slow);
    animation: ks-progressBar 1s ease-out;
}

.ks-progress-bar.success { background: linear-gradient(90deg, var(--ks-success-400), var(--ks-success-600)); }
.ks-progress-bar.warning { background: linear-gradient(90deg, var(--ks-warning-400), var(--ks-warning-600)); }
.ks-progress-bar.danger { background: linear-gradient(90deg, var(--ks-danger-400), var(--ks-danger-600)); }

/* ===== AVATAR ===== */
.ks-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-bold);
    color: #fff;
    flex-shrink: 0;
    overflow: hidden;
}

.ks-avatar img { width: 100%; height: 100%; object-fit: cover; }

.ks-avatar-xs { width: 28px; height: 28px; font-size: 0.7rem; }
.ks-avatar-sm { width: 36px; height: 36px; font-size: var(--font-size-sm); }
.ks-avatar-md { width: 44px; height: 44px; font-size: var(--font-size-base); }
.ks-avatar-lg { width: 56px; height: 56px; font-size: var(--font-size-xl); }
.ks-avatar-xl { width: 72px; height: 72px; font-size: var(--font-size-2xl); }

.ks-avatar-group {
    display: flex;
    flex-direction: row-reverse;
}
.ks-avatar-group .ks-avatar {
    margin-left: -8px;
    border: 2px solid var(--bg-surface);
}
.ks-avatar-group .ks-avatar:last-child { margin-left: 0; }

/* ===== TABS ===== */
.ks-tabs {
    display: flex;
    gap: var(--space-1);
    border-bottom: 2px solid var(--border-default);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.ks-tab {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    transition: all var(--transition-fast);
    cursor: pointer;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.ks-tab:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.ks-tab.active {
    color: var(--ks-primary-600);
    border-bottom-color: var(--ks-primary-600);
    font-weight: var(--font-weight-semibold);
}

[data-theme="dark"] .ks-tab.active {
    color: var(--ks-primary-400);
    border-bottom-color: var(--ks-primary-400);
}

/* ===== EMPTY STATE ===== */
.ks-empty {
    text-align: center;
    padding: var(--space-12) var(--space-6);
    color: var(--text-muted);
}

.ks-empty-icon {
    font-size: 3rem;
    opacity: 0.4;
    margin-bottom: var(--space-4);
    display: block;
}

.ks-empty-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.ks-empty-text {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    max-width: 360px;
    margin: 0 auto var(--space-6);
}

/* ===== SKELETON LOADING ===== */
.ks-skeleton {
    background: var(--bg-skeleton);
    background-size: 200% 100%;
    animation: ks-shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.ks-skeleton-text { height: 14px; margin-bottom: 8px; }
.ks-skeleton-title { height: 22px; width: 60%; margin-bottom: 12px; }
.ks-skeleton-card { height: 120px; border-radius: var(--radius-xl); margin-bottom: var(--space-4); }
.ks-skeleton-avatar { width: 44px; height: 44px; border-radius: var(--radius-md); }
.ks-skeleton-bar { height: 40px; border-radius: var(--radius-md); }
.ks-skeleton-circle { border-radius: 50%; }

/* ===== TOOLTIP ===== */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: var(--ks-neutral-900);
    color: #fff;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-fast);
    z-index: var(--z-toast);
}

[data-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ===== MODAL ===== */
.ks-modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg-overlay);
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    animation: ks-fadeIn var(--transition-fast);
}

.ks-modal-backdrop.show { display: flex; }

.ks-modal {
    background: var(--bg-surface);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 520px;
    max-height: 85vh;
    overflow-y: auto;
    animation: ks-scaleIn var(--transition-base);
}

.ks-modal-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ks-modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.ks-modal-body { padding: var(--space-6); }

.ks-modal-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-default);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
}

/* ===== COLOR CUSTOMIZER PANEL ===== */
.ks-customizer {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    height: 100vh;
    background: var(--bg-surface);
    border-left: 1px solid var(--border-default);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-modal);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.ks-customizer.open { transform: translateX(0); }

.ks-customizer-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.ks-customizer-body {
    padding: var(--space-5) var(--space-6);
    flex: 1;
    overflow-y: auto;
}

.ks-customizer-section {
    margin-bottom: var(--space-6);
}

.ks-customizer-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: var(--space-3);
}

.ks-color-presets {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2);
}

.ks-color-preset {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.ks-color-preset:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.ks-color-preset.active {
    border-color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.ks-color-preset.active::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.ks-custom-color {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.ks-custom-color input[type="color"] {
    width: 44px;
    height: 44px;
    border: 2px solid var(--border-default);
    border-radius: var(--radius-md);
    cursor: pointer;
    padding: 2px;
    background: var(--bg-surface);
}

/* ===== FOOTER ===== */
.ks-footer {
    padding: var(--space-5) var(--space-6);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    border-top: 1px solid var(--border-default);
    margin-top: auto;
}

/* ===== ANIMATIONS - PAGE ENTRY ===== */
.ks-animate-in {
    animation: ks-fadeInUp 0.4s ease-out both;
}

.ks-animate-in:nth-child(1) { animation-delay: 0s; }
.ks-animate-in:nth-child(2) { animation-delay: 0.05s; }
.ks-animate-in:nth-child(3) { animation-delay: 0.1s; }
.ks-animate-in:nth-child(4) { animation-delay: 0.15s; }
.ks-animate-in:nth-child(5) { animation-delay: 0.2s; }
.ks-animate-in:nth-child(6) { animation-delay: 0.25s; }

.ks-stagger > * {
    animation: ks-fadeInUp 0.4s ease-out both;
}

.ks-stagger > *:nth-child(1) { animation-delay: 0s; }
.ks-stagger > *:nth-child(2) { animation-delay: 0.06s; }
.ks-stagger > *:nth-child(3) { animation-delay: 0.12s; }
.ks-stagger > *:nth-child(4) { animation-delay: 0.18s; }
.ks-stagger > *:nth-child(5) { animation-delay: 0.24s; }
.ks-stagger > *:nth-child(6) { animation-delay: 0.3s; }
.ks-stagger > *:nth-child(7) { animation-delay: 0.36s; }
.ks-stagger > *:nth-child(8) { animation-delay: 0.42s; }

/* ===== GRID HELPERS ===== */
.ks-grid {
    display: grid;
    gap: var(--space-5);
}

.ks-grid-2 { grid-template-columns: repeat(2, 1fr); }
.ks-grid-3 { grid-template-columns: repeat(3, 1fr); }
.ks-grid-4 { grid-template-columns: repeat(4, 1fr); }
.ks-grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* ===== LIVE INDICATOR ===== */
.ks-live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ks-success-500);
    display: inline-block;
    position: relative;
}

.ks-live-dot::after {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--ks-success-500);
    animation: ks-pulse 2s ease-in-out infinite;
}

/* ===== PERCENTAGE CIRCLE ===== */
.ks-percent-circle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.ks-percent-circle svg {
    transform: rotate(-90deg);
}

.ks-percent-circle .ks-percent-text {
    position: absolute;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

/* ===== TAG / CHIP ===== */
.ks-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    background: var(--bg-surface-hover);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
}

/* ===== DIVIDER ===== */
.ks-divider {
    height: 1px;
    background: var(--border-default);
    margin: var(--space-5) 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1199.98px) {
    .ks-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 991.98px) {
    .ks-sidebar {
        transform: translateX(-100%);
    }

    .ks-sidebar.show {
        transform: translateX(0);
    }

    .ks-topbar {
        left: 0;
        padding: 0 var(--space-3);
    }

    .ks-main {
        margin-left: 0;
        padding: var(--space-4) var(--space-3);
    }

    .ks-sidebar-toggle {
        display: flex;
    }

    .ks-search {
        flex: 1;
        max-width: none;
    }

    .ks-search input {
        width: 100%;
        font-size: var(--font-size-xs);
        padding: 8px 10px 8px 34px;
    }

    .ks-search input:focus { width: 100%; }

    .ks-search-dropdown {
        min-width: 0;
        left: -60px;
        right: -12px;
        width: auto;
    }

    .ks-breadcrumb { display: none !important; }

    .ks-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .ks-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767.98px) {
    .ks-grid-2,
    .ks-grid-3,
    .ks-grid-4 { grid-template-columns: 1fr; }

    .ks-stat-card { padding: var(--space-4); }
    .ks-stat-value { font-size: var(--font-size-2xl); }
    .ks-stat-icon { width: 42px; height: 42px; font-size: 1.2rem; }

    .ks-customizer { width: 100%; }
}

@media (max-width: 575.98px) {
    .ks-main { padding: var(--space-3) var(--space-2); }
    .ks-topbar { padding: 0 var(--space-2); }

    .ks-card-body { padding: var(--space-4); }
    .ks-card-header { padding: var(--space-4); }
}

/* ===== PRINT ===== */
@media print {
    .ks-sidebar,
    .ks-topbar,
    .ks-overlay,
    .ks-theme-toggle,
    .ks-color-toggle,
    .ks-customizer { display: none !important; }

    .ks-main {
        margin: 0;
        padding: 0;
    }

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

    body { background: #fff; color: #000; }
}

/* ===== UTILITY CLASSES ===== */
.ks-text-primary { color: var(--ks-primary-600) !important; }
.ks-text-secondary { color: var(--ks-secondary-600) !important; }
.ks-text-accent { color: var(--ks-accent-600) !important; }
.ks-text-info { color: var(--ks-info-600) !important; }
.ks-text-success { color: var(--ks-success-600) !important; }
.ks-text-warning { color: var(--ks-warning-600) !important; }
.ks-text-danger { color: var(--ks-danger-600) !important; }
.ks-text-muted { color: var(--text-muted) !important; }

.ks-bg-primary-light { background: var(--ks-primary-50) !important; }
.ks-bg-secondary-light { background: var(--ks-secondary-50) !important; }
.ks-bg-accent-light { background: var(--ks-accent-50) !important; }
.ks-bg-info-light { background: var(--ks-info-50) !important; }
.ks-bg-success-light { background: var(--ks-success-50) !important; }
.ks-bg-warning-light { background: var(--ks-warning-50) !important; }
.ks-bg-danger-light { background: var(--ks-danger-50) !important; }

.ks-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ks-gap-1 { gap: var(--space-1); }
.ks-gap-2 { gap: var(--space-2); }
.ks-gap-3 { gap: var(--space-3); }
.ks-gap-4 { gap: var(--space-4); }
.ks-gap-5 { gap: var(--space-5); }
.ks-gap-6 { gap: var(--space-6); }

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