/* ========================================
   SPC Design System
   Inspired by: Linear.app, Cursor, Vercel, Render
   Primary Color: #0834bd (Vivid Blue)
   ======================================== */

/* ========================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ======================================== */
   :root {
    /* ---- Color Palette ---- */
    /* Primary Blue - Based on #0834bd */
    --color-primary-50: rgba(8, 52, 189, 0.05);
    --color-primary-100: rgba(8, 52, 189, 0.1);
    --color-primary-200: rgba(8, 52, 189, 0.2);
    --color-primary-300: rgba(8, 52, 189, 0.3);
    --color-primary-400: #2a52d4;
    --color-primary-500: #0834bd;
    --color-primary-600: #062ca1;
    --color-primary-700: #052385;
    --color-primary-800: #041a69;
    --color-primary-900: #03114d;
    
    /* Neutral / Gray Scale */
    --color-gray-50: #fafafa;
    --color-gray-100: #f4f4f5;
    --color-gray-200: #e4e4e7;
    --color-gray-300: #d4d4d8;
    --color-gray-400: #a1a1aa;
    --color-gray-500: #71717a;
    --color-gray-600: #52525b;
    --color-gray-700: #3f3f46;
    --color-gray-800: #27272a;
    --color-gray-900: #18181b;
    --color-gray-950: #0a0a0b;
    
    /* Semantic Colors */
    --color-success-light: rgba(34, 197, 94, 0.1);
    --color-success: #22c55e;
    --color-success-dark: #16a34a;
    
    --color-warning-light: rgba(245, 158, 11, 0.1);
    --color-warning: #f59e0b;
    --color-warning-dark: #d97706;
    
    --color-danger-light: rgba(239, 68, 68, 0.1);
    --color-danger: #ef4444;
    --color-danger-dark: #dc2626;
    
    --color-info-light: rgba(8, 52, 189, 0.1);
    --color-info: #0834bd;
    --color-info-dark: #062ca1;
    
    /* ---- Dark Theme Colors ---- */
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --bg-elevated: #1f1f23;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --bg-input: rgba(255, 255, 255, 0.05);
    --bg-input-focus: rgba(255, 255, 255, 0.08);
    
    /* Text Colors */
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --text-muted: #52525b;
    --text-disabled: #3f3f46;
    --text-inverse: #0a0a0b;
    
    /* Border Colors */
    --border-default: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --border-focus: rgba(8, 52, 189, 0.5);
    --border-active: #0834bd;
    
    /* ---- Typography ---- */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Monaco, Consolas, monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    --text-6xl: 3.75rem;     /* 60px */
    --text-7xl: 4.5rem;      /* 72px */
    
    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Letter Spacing */
    --tracking-tighter: -0.05em;
    --tracking-tight: -0.025em;
    --tracking-normal: 0;
    --tracking-wide: 0.025em;
    --tracking-wider: 0.05em;
    --tracking-widest: 0.1em;
    
    /* ---- Spacing ---- */
    --space-0: 0;
    --space-1: 0.25rem;      /* 4px */
    --space-2: 0.5rem;       /* 8px */
    --space-3: 0.75rem;      /* 12px */
    --space-4: 1rem;         /* 16px */
    --space-5: 1.25rem;      /* 20px */
    --space-6: 1.5rem;       /* 24px */
    --space-8: 2rem;         /* 32px */
    --space-10: 2.5rem;      /* 40px */
    --space-12: 3rem;        /* 48px */
    --space-16: 4rem;        /* 64px */
    --space-20: 5rem;        /* 80px */
    --space-24: 6rem;        /* 96px */
    
    /* ---- Border Radius ---- */
    --radius-none: 0;
    --radius-sm: 0.25rem;    /* 4px */
    --radius-default: 0.5rem; /* 8px */
    --radius-md: 0.625rem;   /* 10px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;
    
    /* ---- Shadows ---- */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3), 0 4px 6px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3), 0 8px 10px rgba(0, 0, 0, 0.2);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(8, 52, 189, 0.2);
    --shadow-glow-lg: 0 0 60px rgba(8, 52, 189, 0.25);
    
    /* ---- Transitions ---- */
    --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    --duration-fast: 150ms;
    --duration-base: 250ms;
    --duration-slow: 350ms;
    --duration-slower: 500ms;
    
    /* ---- Z-Index Scale ---- */
    --z-hide: -1;
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;
    
    /* ---- Layout ---- */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
    --nav-height: 64px;
}

/* ========================================
   2. BASE STYLES & RESETS
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-height) + 20px);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.dark-theme {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: var(--leading-normal);
}

::selection {
    background: var(--color-primary-300);
    color: var(--text-primary);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: var(--radius-full);
}

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

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* ========================================
   3. TYPOGRAPHY
   ======================================== */
/* Headings */
.heading-1, .h1 {
    font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--text-primary);
}

.heading-2, .h2 {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--text-primary);
}

.heading-3, .h3 {
    font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
    font-weight: var(--font-semibold);
    line-height: var(--leading-snug);
    color: var(--text-primary);
}

.heading-4, .h4 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    line-height: var(--leading-snug);
    color: var(--text-primary);
}

.heading-5, .h5 {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    line-height: var(--leading-snug);
    color: var(--text-primary);
}

.heading-6, .h6 {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    line-height: var(--leading-snug);
    color: var(--text-primary);
}

/* Text Styles */
.text-display {
    font-size: clamp(var(--text-5xl), 10vw, var(--text-7xl));
    font-weight: var(--font-bold);
    line-height: var(--leading-none);
    letter-spacing: var(--tracking-tighter);
}

.text-body {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.text-body-lg {
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.text-body-sm {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.text-caption {
    font-size: var(--text-xs);
    line-height: var(--leading-normal);
    color: var(--text-tertiary);
}

.text-overline {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.text-label {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

/* Gradient Text */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-400) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-animated {
    background: linear-gradient(
        135deg,
        var(--color-primary-700),
        var(--color-primary-500),
        var(--color-primary-400),
        var(--color-primary-500),
        var(--color-primary-700)
    );
    background-size: 400% 400%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient-shift 8s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Text Colors */
.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-tertiary { color: var(--text-tertiary) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-accent { color: var(--color-primary-500) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-danger { color: var(--color-danger) !important; }

/* ========================================
   4. BUTTONS
   ======================================== */
/* Base Button */
.btn-ds {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: var(--leading-tight);
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-default);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-default);
    white-space: nowrap;
    user-select: none;
}

.btn-ds:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

.btn-ds:disabled,
.btn-ds.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-ds svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* Button Sizes */
.btn-ds-xs {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    border-radius: var(--radius-sm);
}

.btn-ds-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-sm);
}

.btn-ds-md {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.btn-ds-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
    border-radius: var(--radius-lg);
}

.btn-ds-xl {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
    border-radius: var(--radius-lg);
}

/* Primary Button */
.btn-ds-primary {
    color: white;
    background-color: var(--color-primary-500);
    border-color: var(--color-primary-500);
}

.btn-ds-primary:hover {
    background-color: var(--color-primary-600);
    border-color: var(--color-primary-600);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(8, 52, 189, 0.35);
}

.btn-ds-primary:active {
    transform: translateY(0);
    box-shadow: none;
}

/* Secondary Button */
.btn-ds-secondary {
    color: var(--text-primary);
    background-color: var(--bg-card);
    border-color: var(--border-default);
}

.btn-ds-secondary:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn-ds-secondary:active {
    transform: translateY(0);
}

/* Ghost Button */
.btn-ds-ghost {
    color: var(--text-secondary);
    background-color: transparent;
    border-color: transparent;
}

.btn-ds-ghost:hover {
    color: var(--text-primary);
    background-color: var(--bg-card-hover);
}

/* Outline Button */
.btn-ds-outline {
    color: var(--color-primary-500);
    background-color: transparent;
    border-color: var(--color-primary-500);
}

.btn-ds-outline:hover {
    color: white;
    background-color: var(--color-primary-500);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(8, 52, 189, 0.35);
}

/* Danger Button */
.btn-ds-danger {
    color: white;
    background-color: var(--color-danger);
    border-color: var(--color-danger);
}

.btn-ds-danger:hover {
    background-color: var(--color-danger-dark);
    border-color: var(--color-danger-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Success Button */
.btn-ds-success {
    color: white;
    background-color: var(--color-success);
    border-color: var(--color-success);
}

.btn-ds-success:hover {
    background-color: var(--color-success-dark);
    border-color: var(--color-success-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

/* Warning Button */
.btn-ds-warning {
    color: var(--text-inverse);
    background-color: var(--color-warning);
    border-color: var(--color-warning);
}

.btn-ds-warning:hover {
    background-color: var(--color-warning-dark);
    border-color: var(--color-warning-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

/* Link Button */
.btn-ds-link {
    color: var(--color-primary-500);
    background-color: transparent;
    border-color: transparent;
    padding: 0;
}

.btn-ds-link:hover {
    color: var(--color-primary-400);
    text-decoration: underline;
}

/* Icon Button */
.btn-ds-icon {
    padding: var(--space-2);
    aspect-ratio: 1;
}

.btn-ds-icon.btn-ds-xs { padding: var(--space-1); }
.btn-ds-icon.btn-ds-sm { padding: 6px; }
.btn-ds-icon.btn-ds-lg { padding: var(--space-3); }
.btn-ds-icon.btn-ds-xl { padding: var(--space-4); }

/* Button with Glow Effect */
.btn-ds-glow {
    box-shadow: 0 0 0 1px rgba(8, 52, 189, 0.35), var(--shadow-glow);
}

.btn-ds-glow:hover {
    box-shadow: 0 0 0 1px rgba(8, 52, 189, 0.5), var(--shadow-glow-lg);
}

/* Button Group */
.btn-group-ds {
    display: inline-flex;
}

.btn-group-ds .btn-ds {
    border-radius: 0;
}

.btn-group-ds .btn-ds:first-child {
    border-top-left-radius: var(--radius-default);
    border-bottom-left-radius: var(--radius-default);
}

.btn-group-ds .btn-ds:last-child {
    border-top-right-radius: var(--radius-default);
    border-bottom-right-radius: var(--radius-default);
}

.btn-group-ds .btn-ds:not(:last-child) {
    border-right-color: rgba(255, 255, 255, 0.1);
}

/* ========================================
   5. CARDS
   ======================================== */
/* Base Card */
.card-ds {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--duration-base) var(--ease-default);
}

.card-ds-body {
    padding: var(--space-6);
}

.card-ds-header {
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--border-default);
}

.card-ds-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-default);
}

/* Interactive Card */
.card-ds-interactive {
    cursor: pointer;
}

.card-ds-interactive:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Card with Top Accent */
.card-ds-accent::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary-500), transparent);
    opacity: 0;
    transition: opacity var(--duration-base);
}

.card-ds-accent:hover::before {
    opacity: 1;
}

/* Card Variants */
.card-ds-elevated {
    background: var(--bg-elevated);
    box-shadow: var(--shadow-md);
}

.card-ds-bordered {
    background: transparent;
    border: 1px solid var(--border-default);
}

.card-ds-filled {
    background: var(--bg-tertiary);
    border: none;
}

/* Feature Card */
.card-feature {
    padding: var(--space-8);
}

.card-feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-500));
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
}

.card-feature-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.card-feature-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.card-feature-description {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* Stat Card */
.card-stat {
    padding: var(--space-6);
}

.card-stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-1);
}

.card-stat-value {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    letter-spacing: var(--tracking-tight);
}

.card-stat-change {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-sm);
    margin-top: var(--space-2);
}

.card-stat-change.positive { color: var(--color-success); }
.card-stat-change.negative { color: var(--color-danger); }

/* ========================================
   6. BADGES & TAGS
   ======================================== */
/* Base Badge */
.badge-ds {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    line-height: var(--leading-none);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

/* Badge Sizes */
.badge-ds-sm {
    padding: 2px var(--space-1);
    font-size: 10px;
}

.badge-ds-lg {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-sm);
}

/* Badge Variants */
.badge-ds-default {
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
}

.badge-ds-primary {
    color: var(--color-primary-500);
    background: var(--color-primary-100);
}

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

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

.badge-ds-danger {
    color: var(--color-danger);
    background: var(--color-danger-light);
}

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

/* Solid Badges */
.badge-ds-primary-solid {
    color: white;
    background: var(--color-primary-500);
}

.badge-ds-success-solid {
    color: white;
    background: var(--color-success);
}

.badge-ds-warning-solid {
    color: var(--text-inverse);
    background: var(--color-warning);
}

.badge-ds-danger-solid {
    color: white;
    background: var(--color-danger);
}

/* Badge with Dot */
.badge-ds-dot::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background: currentColor;
}

/* Status Dot */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.status-dot-online { background: var(--color-success); }
.status-dot-offline { background: var(--text-muted); }
.status-dot-busy { background: var(--color-danger); }
.status-dot-away { background: var(--color-warning); }

.status-dot-pulse {
    animation: pulse-dot 2s ease-in-out infinite;
}

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

/* ========================================
   7. FORM ELEMENTS
   ======================================== */
/* Form Group */
.form-group-ds {
    margin-bottom: var(--space-4);
}

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

.form-label-ds.required::after {
    content: ' *';
    color: var(--color-danger);
}

/* Base Input */
.form-input-ds {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-default);
    transition: all var(--duration-fast) var(--ease-default);
}

.form-input-ds::placeholder {
    color: var(--text-muted);
}

.form-input-ds:hover {
    border-color: var(--border-hover);
}

.form-input-ds:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
    background: var(--bg-input-focus);
}

.form-input-ds:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Input Sizes */
.form-input-ds-sm {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
}

.form-input-ds-lg {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
}

/* Input States */
.form-input-ds.is-valid {
    border-color: var(--color-success);
}

.form-input-ds.is-valid:focus {
    box-shadow: 0 0 0 3px var(--color-success-light);
}

.form-input-ds.is-invalid {
    border-color: var(--color-danger);
}

.form-input-ds.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--color-danger-light);
}

/* Input with Icon */
.input-group-ds {
    position: relative;
}

.input-group-ds .form-input-ds {
    /* padding-left: 40px; */
}

.input-group-ds-icon {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.input-group-ds-icon svg {
    width: 16px;
    height: 16px;
}

/* Input with Right Element */
.input-group-ds.has-right .form-input-ds {
    padding-right: 40px;
}

.input-group-ds-right {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
}

/* Textarea */
.form-textarea-ds {
    min-height: 100px;
    resize: vertical;
}

/* Select */
.form-select-ds {
    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='%23a1a1aa' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-right: 40px;
}

/* Checkbox & Radio */
.form-check-ds {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    cursor: pointer;
}

.form-check-ds input {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    cursor: pointer;
    transition: all var(--duration-fast);
    flex-shrink: 0;
    margin-top: 2px;
}

.form-check-ds input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-ds input:hover {
    border-color: var(--border-hover);
}

.form-check-ds input:checked {
    background: var(--color-primary-500);
    border-color: var(--color-primary-500);
}

.form-check-ds input:checked::after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 12px;
}

.form-check-ds input[type="radio"]:checked::after {
    background-image: none;
    background: white;
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    margin: 4px;
}

.form-check-ds-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* Toggle Switch */
.form-switch-ds {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
}

.form-switch-ds input {
    appearance: none;
    width: 40px;
    height: 22px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    transition: background var(--duration-fast);
}

.form-switch-ds input::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: all var(--duration-fast);
}

.form-switch-ds input:checked {
    background: var(--color-primary-500);
}

.form-switch-ds input:checked::after {
    left: 20px;
    background: white;
}

/* Form Helper Text */
.form-helper-ds {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--space-1);
}

.form-helper-ds.is-invalid {
    color: var(--color-danger);
}

/* ========================================
   8. ALERTS & NOTIFICATIONS
   ======================================== */
/* Base Alert */
.alert-ds {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    border: 1px solid;
}

.alert-ds-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.alert-ds-content {
    flex: 1;
    min-width: 0;
}

.alert-ds-title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

.alert-ds-message {
    font-size: var(--text-sm);
    color: inherit;
    opacity: 0.9;
}

.alert-ds-close {
    flex-shrink: 0;
    padding: var(--space-1);
    background: transparent;
    border: none;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--duration-fast);
}

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

/* Alert Variants */
.alert-ds-info {
    color: var(--color-info);
    background: var(--color-info-light);
    border-color: rgba(8, 52, 189, 0.25);
}

.alert-ds-success {
    color: var(--color-success);
    background: var(--color-success-light);
    border-color: rgba(34, 197, 94, 0.2);
}

.alert-ds-warning {
    color: var(--color-warning);
    background: var(--color-warning-light);
    border-color: rgba(245, 158, 11, 0.2);
}

.alert-ds-danger {
    color: var(--color-danger);
    background: var(--color-danger-light);
    border-color: rgba(239, 68, 68, 0.2);
}

/* Toast Notification */
.toast-ds {
    position: fixed;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-toast);
    max-width: 400px;
    animation: slide-in-right 0.3s var(--ease-out);
}

.toast-ds-bottom-right {
    bottom: var(--space-6);
    right: var(--space-6);
}

.toast-ds-top-right {
    top: calc(var(--nav-height) + var(--space-6));
    right: var(--space-6);
}

@keyframes slide-in-right {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ========================================
   9. MODALS & DIALOGS
   ======================================== */
/* Modal Backdrop */
.modal-backdrop-ds {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    animation: fade-in 0.2s var(--ease-out);
}

/* Modal Container */
.modal-ds {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    z-index: var(--z-modal);
    overflow-y: auto;
}

/* Modal Content */
.modal-content-ds {
    position: relative;
    width: 100%;
    max-width: 500px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    animation: modal-enter 0.3s var(--ease-out);
}

.modal-content-ds-sm { max-width: 400px; }
.modal-content-ds-lg { max-width: 700px; }
.modal-content-ds-xl { max-width: 900px; }
.modal-content-ds-full { max-width: calc(100vw - var(--space-8)); }

@keyframes modal-enter {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

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

.modal-title-ds {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.modal-close-ds {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: var(--radius-default);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--duration-fast);
}

.modal-close-ds:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

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

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

/* ========================================
   10. NAVIGATION & MENUS
   ======================================== */
/* Dropdown Menu */
.dropdown-menu-ds {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-2);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--duration-fast) var(--ease-default);
}

.dropdown-menu-ds.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(var(--space-2));
}

.dropdown-item-ds {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-default);
    transition: all var(--duration-fast);
    cursor: pointer;
}

.dropdown-item-ds:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

.dropdown-item-ds.active {
    color: var(--color-primary-500);
    background: var(--color-primary-100);
}

.dropdown-item-ds.danger:hover {
    color: var(--color-danger);
    background: var(--color-danger-light);
}

.dropdown-divider-ds {
    height: 1px;
    background: var(--border-default);
    margin: var(--space-2) 0;
}

/* Tabs */
.tabs-ds {
    display: flex;
    gap: var(--space-1);
    border-bottom: 1px solid var(--border-default);
    padding-bottom: 0;
}

.tab-ds {
    position: relative;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-tertiary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: color var(--duration-fast);
}

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

.tab-ds.active {
    color: var(--text-primary);
}

.tab-ds.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary-500);
}

/* Pills */
.pills-ds {
    display: flex;
    gap: var(--space-1);
    padding: var(--space-1);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.pill-ds {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-tertiary);
    background: transparent;
    border: none;
    border-radius: var(--radius-default);
    cursor: pointer;
    transition: all var(--duration-fast);
}

.pill-ds:hover {
    color: var(--text-secondary);
}

.pill-ds.active {
    color: var(--text-primary);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
}

/* Pill Tabs - Reusable pill-style tab group (Featured/SaaS style) */
.tabs-pill-ds {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    margin-bottom: var(--space-5);
}

.tab-pill-ds {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    text-decoration: none;
    display: inline-block;
}

.tab-pill-ds:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.12);
}

.tab-pill-ds.active {
    background: #ffffff;
    color: var(--bg-primary, #0a0a0b);
    border-color: #ffffff;
}

/* Pill Tabs - Small variant */
.tabs-pill-ds-sm {
    display: flex;
    gap: var(--space-1);
    flex-wrap: wrap;
    margin-bottom: var(--space-4);
}

.tabs-pill-ds-sm .tab-pill-ds-sm,
.tab-pill-ds-sm {
    padding: var(--space-2) var(--space-3);
    font-size: 0.8125rem;
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    text-decoration: none;
    display: inline-block;
}

.tabs-pill-ds-sm .tab-pill-ds-sm:hover,
.tab-pill-ds-sm:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.12);
}

.tabs-pill-ds-sm .tab-pill-ds-sm.active,
.tab-pill-ds-sm.active {
    background: #ffffff;
    color: var(--bg-primary, #0a0a0b);
    border-color: #ffffff;
}

/* Breadcrumb */
.breadcrumb-ds {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
}

.breadcrumb-item-ds {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--duration-fast);
}

.breadcrumb-item-ds:hover {
    color: var(--text-secondary);
}

.breadcrumb-item-ds.active {
    color: var(--text-primary);
}

.breadcrumb-separator-ds {
    color: var(--text-muted);
}

/* ========================================
   11. TABLES
   ======================================== */
.table-ds {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.table-ds th,
.table-ds td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--border-default);
}

.table-ds th {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    background: var(--bg-tertiary);
}

.table-ds td {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

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

.table-ds tbody tr:hover {
    background: var(--bg-card-hover);
}

/* Rounded Table */
.table-ds-rounded {
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table-ds-rounded th:first-child { border-top-left-radius: var(--radius-lg); }
.table-ds-rounded th:last-child { border-top-right-radius: var(--radius-lg); }

/* Striped Table */
.table-ds-striped tbody tr:nth-child(even) {
    background: var(--bg-card);
}

/* ========================================
   12. AVATARS
   ======================================== */
.avatar-ds {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary-200);
    color: var(--color-primary-600);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    overflow: hidden;
    flex-shrink: 0;
}

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

/* Avatar Sizes */
.avatar-ds-xs { width: 24px; height: 24px; font-size: var(--text-xs); }
.avatar-ds-sm { width: 32px; height: 32px; font-size: var(--text-xs); }
.avatar-ds-md { width: 40px; height: 40px; font-size: var(--text-sm); }
.avatar-ds-lg { width: 56px; height: 56px; font-size: var(--text-base); }
.avatar-ds-xl { width: 72px; height: 72px; font-size: var(--text-lg); }

/* Avatar Group */
.avatar-group-ds {
    display: flex;
}

.avatar-group-ds .avatar-ds {
    border: 2px solid var(--bg-primary);
    margin-left: -8px;
}

.avatar-group-ds .avatar-ds:first-child {
    margin-left: 0;
}

/* ========================================
   13. PROGRESS & LOADERS
   ======================================== */
/* Progress Bar */
.progress-ds {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-ds {
    height: 100%;
    background: var(--color-primary-500);
    border-radius: var(--radius-full);
    transition: width var(--duration-slow) var(--ease-out);
}

.progress-ds-sm { height: 4px; }
.progress-ds-lg { height: 8px; }

/* Spinner */
.spinner-ds {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-default);
    border-top-color: var(--color-primary-500);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner-ds-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-ds-lg { width: 32px; height: 32px; border-width: 3px; }
.spinner-ds-xl { width: 48px; height: 48px; border-width: 4px; }

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Skeleton Loader */
.skeleton-ds {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-elevated) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: var(--radius-default);
}

.skeleton-text { height: 16px; }
.skeleton-title { height: 24px; width: 60%; }
.skeleton-avatar { width: 40px; height: 40px; border-radius: var(--radius-full); }
.skeleton-button { height: 36px; width: 100px; }
.skeleton-card { height: 200px; }

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

/* ========================================
   14. TOOLTIPS & POPOVERS
   ======================================== */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-default);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    z-index: var(--z-tooltip);
    transition: all var(--duration-fast) var(--ease-default);
    pointer-events: none;
}

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

/* Tooltip Positions */
[data-tooltip-pos="top"]::after { bottom: calc(100% + 8px); top: auto; }
[data-tooltip-pos="bottom"]::after { top: calc(100% + 8px); bottom: auto; }
[data-tooltip-pos="left"]::after { right: calc(100% + 8px); left: auto; bottom: auto; top: 50%; transform: translateY(-50%) translateX(4px); }
[data-tooltip-pos="right"]::after { left: calc(100% + 8px); right: auto; bottom: auto; top: 50%; transform: translateY(-50%) translateX(-4px); }

[data-tooltip-pos="left"]:hover::after,
[data-tooltip-pos="right"]:hover::after {
    transform: translateY(-50%) translateX(0);
}

/* ========================================
   15. DIVIDERS
   ======================================== */
.divider-ds {
    height: 1px;
    background: var(--border-default);
    border: none;
    margin: var(--space-4) 0;
}

.divider-ds-vertical {
    width: 1px;
    height: auto;
    align-self: stretch;
    margin: 0 var(--space-4);
}

.divider-ds-text {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    color: var(--text-muted);
    font-size: var(--text-sm);
}

.divider-ds-text::before,
.divider-ds-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-default);
}

/* ========================================
   16. LISTS
   ======================================== */
.list-ds {
    list-style: none;
    padding: 0;
    margin: 0;
}

.list-item-ds {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-default);
    transition: background var(--duration-fast);
}

.list-item-ds:last-child {
    border-bottom: none;
}

.list-item-ds:hover {
    background: var(--bg-card-hover);
}

.list-item-ds-interactive {
    cursor: pointer;
}

/* ========================================
   17. EMPTY STATES
   ======================================== */
.empty-state-ds {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12);
    text-align: center;
}

.empty-state-icon-ds {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

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

.empty-state-description-ds {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    max-width: 400px;
    margin-bottom: var(--space-6);
}

/* ========================================
   18. UTILITY CLASSES
   ======================================== */
/* Display */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-grid { display: grid !important; }

/* Flex */
.flex-row { flex-direction: row !important; }
.flex-col { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }
.flex-1 { flex: 1 1 0% !important; }
.flex-auto { flex: 1 1 auto !important; }
.flex-none { flex: none !important; }

/* Alignment */
.items-start { align-items: flex-start !important; }
.items-center { align-items: center !important; }
.items-end { align-items: flex-end !important; }
.items-stretch { align-items: stretch !important; }

.justify-start { justify-content: flex-start !important; }
.justify-center { justify-content: center !important; }
.justify-end { justify-content: flex-end !important; }
.justify-between { justify-content: space-between !important; }
.justify-around { justify-content: space-around !important; }

/* Gap */
.gap-1 { gap: var(--space-1) !important; }
.gap-2 { gap: var(--space-2) !important; }
.gap-3 { gap: var(--space-3) !important; }
.gap-4 { gap: var(--space-4) !important; }
.gap-5 { gap: var(--space-5) !important; }
.gap-6 { gap: var(--space-6) !important; }
.gap-8 { gap: var(--space-8) !important; }

/* Margin */
.m-0 { margin: 0 !important; }
.m-auto { margin: auto !important; }
.mx-auto { margin-left: auto !important; margin-right: auto !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--space-1) !important; }
.mt-2 { margin-top: var(--space-2) !important; }
.mt-3 { margin-top: var(--space-3) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-6 { margin-top: var(--space-6) !important; }
.mt-8 { margin-top: var(--space-8) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--space-1) !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-3 { margin-bottom: var(--space-3) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-6 { margin-bottom: var(--space-6) !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }

/* Padding */
.p-0 { padding: 0 !important; }
.p-1 { padding: var(--space-1) !important; }
.p-2 { padding: var(--space-2) !important; }
.p-3 { padding: var(--space-3) !important; }
.p-4 { padding: var(--space-4) !important; }
.p-6 { padding: var(--space-6) !important; }
.p-8 { padding: var(--space-8) !important; }

.px-0 { padding-left: 0 !important; padding-right: 0 !important; }
.px-2 { padding-left: var(--space-2) !important; padding-right: var(--space-2) !important; }
.px-4 { padding-left: var(--space-4) !important; padding-right: var(--space-4) !important; }
.px-6 { padding-left: var(--space-6) !important; padding-right: var(--space-6) !important; }

.py-0 { padding-top: 0 !important; padding-bottom: 0 !important; }
.py-2 { padding-top: var(--space-2) !important; padding-bottom: var(--space-2) !important; }
.py-4 { padding-top: var(--space-4) !important; padding-bottom: var(--space-4) !important; }
.py-6 { padding-top: var(--space-6) !important; padding-bottom: var(--space-6) !important; }

/* Width & Height */
.w-full { width: 100% !important; }
.w-auto { width: auto !important; }
.h-full { height: 100% !important; }
.h-auto { height: auto !important; }
.min-h-screen { min-height: 100vh !important; }

/* Border Radius */
.rounded-none { border-radius: var(--radius-none) !important; }
.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded { border-radius: var(--radius-default) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* Text Alignment */
.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

/* Font Weight */
.font-light { font-weight: var(--font-light) !important; }
.font-normal { font-weight: var(--font-normal) !important; }
.font-medium { font-weight: var(--font-medium) !important; }
.font-semibold { font-weight: var(--font-semibold) !important; }
.font-bold { font-weight: var(--font-bold) !important; }

/* Opacity */
.opacity-0 { opacity: 0 !important; }
.opacity-25 { opacity: 0.25 !important; }
.opacity-50 { opacity: 0.5 !important; }
.opacity-75 { opacity: 0.75 !important; }
.opacity-100 { opacity: 1 !important; }

/* Cursor */
.cursor-pointer { cursor: pointer !important; }
.cursor-not-allowed { cursor: not-allowed !important; }

/* Overflow */
.overflow-hidden { overflow: hidden !important; }
.overflow-auto { overflow: auto !important; }
.overflow-x-auto { overflow-x: auto !important; }
.overflow-y-auto { overflow-y: auto !important; }

/* Position */
.relative { position: relative !important; }
.absolute { position: absolute !important; }
.fixed { position: fixed !important; }
.sticky { position: sticky !important; }

/* ========================================
   19. ANIMATIONS
   ======================================== */
/* Fade */
.animate-fade-in {
    animation: fade-in var(--duration-base) var(--ease-out);
}

.animate-fade-out {
    animation: fade-out var(--duration-base) var(--ease-out);
}

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

/* Slide */
.animate-slide-up {
    animation: slide-up var(--duration-base) var(--ease-out);
}

.animate-slide-down {
    animation: slide-down var(--duration-base) var(--ease-out);
}

@keyframes slide-up {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-down {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Scale */
.animate-scale-in {
    animation: scale-in var(--duration-base) var(--ease-out);
}

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

/* Pulse */
.animate-pulse {
    animation: pulse-opacity 2s ease-in-out infinite;
}

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

/* Bounce */
.animate-bounce {
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(-5%); animation-timing-function: cubic-bezier(0.8, 0, 1, 1); }
    50% { transform: translateY(0); animation-timing-function: cubic-bezier(0, 0, 0.2, 1); }
}

/* Hover Transitions */
.hover-lift {
    transition: transform var(--duration-fast) var(--ease-default);
}

.hover-lift:hover {
    transform: translateY(-2px);
}

.hover-scale {
    transition: transform var(--duration-fast) var(--ease-default);
}

.hover-scale:hover {
    transform: scale(1.02);
}

.hover-glow {
    transition: box-shadow var(--duration-fast) var(--ease-default);
}

.hover-glow:hover {
    box-shadow: var(--shadow-glow);
}

/* ========================================
   20. RESPONSIVE UTILITIES
   ======================================== */
/* Hide/Show at breakpoints */
@media (max-width: 639px) {
    .hidden-sm { display: none !important; }
}

@media (min-width: 640px) {
    .show-sm { display: block !important; }
    .show-sm-flex { display: flex !important; }
}

@media (max-width: 767px) {
    .hidden-md { display: none !important; }
}

@media (min-width: 768px) {
    .show-md { display: block !important; }
    .show-md-flex { display: flex !important; }
}

@media (max-width: 1023px) {
    .hidden-lg { display: none !important; }
}

@media (min-width: 1024px) {
    .show-lg { display: block !important; }
    .show-lg-flex { display: flex !important; }
}

@media (max-width: 1279px) {
    .hidden-xl { display: none !important; }
}

@media (min-width: 1280px) {
    .show-xl { display: block !important; }
    .show-xl-flex { display: flex !important; }
}

/* Responsive Grid */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (min-width: 640px) {
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* Responsive Flex Direction */
@media (max-width: 767px) {
    .md\:flex-col { flex-direction: column !important; }
}

/* ========================================
   21. BOOTSTRAP 5 OVERRIDES (Dark Theme)
   ======================================== */
/* Override Bootstrap colors for dark theme */
.dark-theme .bg-white { background-color: var(--bg-secondary) !important; }
.dark-theme .bg-light { background-color: var(--bg-tertiary) !important; }
.dark-theme .bg-dark { background-color: var(--bg-primary) !important; }

.dark-theme .text-dark { color: var(--text-primary) !important; }
.dark-theme .text-muted { color: var(--text-tertiary) !important; }
.dark-theme .text-body { color: var(--text-secondary) !important; }

.dark-theme .border { border-color: var(--border-default) !important; }
.dark-theme .border-top { border-top-color: var(--border-default) !important; }
.dark-theme .border-bottom { border-bottom-color: var(--border-default) !important; }

/* Override Bootstrap buttons */
.dark-theme .btn-primary {
    background-color: var(--color-primary-500) !important;
    border-color: var(--color-primary-500) !important;
}

.dark-theme .btn-primary:hover {
    background-color: var(--color-primary-600) !important;
    border-color: var(--color-primary-600) !important;
}

.dark-theme .btn-secondary {
    background-color: var(--bg-tertiary) !important;
    border-color: var(--border-default) !important;
    color: var(--text-primary) !important;
}

.dark-theme .btn-outline-primary {
    color: var(--color-primary-500) !important;
    border-color: var(--color-primary-500) !important;
}

.dark-theme .btn-outline-primary:hover {
    background-color: var(--color-primary-500) !important;
    color: white !important;
}

/* Override Bootstrap forms */
.dark-theme .form-control {
    background-color: var(--bg-input) !important;
    border-color: var(--border-default) !important;
    color: var(--text-primary) !important;
}

.dark-theme .form-control:focus {
    background-color: var(--bg-input-focus) !important;
    border-color: var(--color-primary-500) !important;
    box-shadow: 0 0 0 3px var(--color-primary-100) !important;
}

.dark-theme .form-control::placeholder {
    color: var(--text-muted) !important;
}

.dark-theme .form-select {
    background-color: var(--bg-input) !important;
    border-color: var(--border-default) !important;
    color: var(--text-primary) !important;
}

.dark-theme .form-label {
    color: var(--text-secondary) !important;
}

/* Override Bootstrap cards */
.dark-theme .card {
    background-color: var(--bg-card) !important;
    border-color: var(--border-default) !important;
}

.dark-theme .card-header {
    background-color: var(--bg-tertiary) !important;
    border-bottom-color: var(--border-default) !important;
}

.dark-theme .card-footer {
    background-color: var(--bg-tertiary) !important;
    border-top-color: var(--border-default) !important;
}

/* Override Bootstrap modals */
.dark-theme .modal-content {
    background-color: var(--bg-secondary) !important;
    border-color: var(--border-default) !important;
}

.dark-theme .modal-header {
    border-bottom-color: var(--border-default) !important;
}

.dark-theme .modal-footer {
    border-top-color: var(--border-default) !important;
}

.dark-theme .btn-close {
    filter: invert(1) !important;
}

/* Override Bootstrap dropdowns */
.dark-theme .dropdown-menu {
    background-color: var(--bg-secondary) !important;
    border-color: var(--border-default) !important;
}

.dark-theme .dropdown-item {
    color: var(--text-secondary) !important;
}

.dark-theme .dropdown-item:hover {
    background-color: var(--bg-card-hover) !important;
    color: var(--text-primary) !important;
}

/* Override Bootstrap tables */
.dark-theme .table {
    color: var(--text-secondary) !important;
}

.dark-theme .table > :not(caption) > * > * {
    background-color: transparent !important;
    border-bottom-color: var(--border-default) !important;
}

.dark-theme .table > thead {
    background-color: var(--bg-tertiary) !important;
}

.dark-theme .table-hover > tbody > tr:hover > * {
    background-color: var(--bg-card-hover) !important;
}

/* Override Bootstrap nav */
.dark-theme .nav-tabs {
    border-bottom-color: var(--border-default) !important;
}

.dark-theme .nav-tabs .nav-link {
    color: var(--text-tertiary) !important;
}

.dark-theme .nav-tabs .nav-link:hover {
    border-color: transparent !important;
    color: var(--text-secondary) !important;
}

.dark-theme .nav-tabs .nav-link.active {
    background-color: transparent !important;
    border-color: var(--border-default) var(--border-default) var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

/* Override Bootstrap alerts */
.dark-theme .alert-primary {
    background-color: var(--color-primary-100) !important;
    border-color: rgba(8, 52, 189, 0.25) !important;
    color: var(--color-primary-500) !important;
}

.dark-theme .alert-success {
    background-color: var(--color-success-light) !important;
    border-color: rgba(34, 197, 94, 0.2) !important;
    color: var(--color-success) !important;
}

.dark-theme .alert-warning {
    background-color: var(--color-warning-light) !important;
    border-color: rgba(245, 158, 11, 0.2) !important;
    color: var(--color-warning) !important;
}

.dark-theme .alert-danger {
    background-color: var(--color-danger-light) !important;
    border-color: rgba(239, 68, 68, 0.2) !important;
    color: var(--color-danger) !important;
}

/* Override Bootstrap pagination */
.dark-theme .page-link {
    background-color: var(--bg-card) !important;
    border-color: var(--border-default) !important;
    color: var(--text-secondary) !important;
}

.dark-theme .page-link:hover {
    background-color: var(--bg-card-hover) !important;
    color: var(--text-primary) !important;
}

.dark-theme .page-item.active .page-link {
    background-color: var(--color-primary-500) !important;
    border-color: var(--color-primary-500) !important;
}

.dark-theme .page-item.disabled .page-link {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-muted) !important;
}

/* Override Bootstrap list-group */
.dark-theme .list-group-item {
    background-color: var(--bg-card) !important;
    border-color: var(--border-default) !important;
    color: var(--text-secondary) !important;
}

.dark-theme .list-group-item:hover {
    background-color: var(--bg-card-hover) !important;
}

.dark-theme .list-group-item.active {
    background-color: var(--color-primary-500) !important;
    border-color: var(--color-primary-500) !important;
}

/* Override Bootstrap badges */
.dark-theme .badge.bg-secondary {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-secondary) !important;
}

/* Override Bootstrap offcanvas */
.dark-theme .offcanvas {
    background-color: var(--bg-secondary) !important;
}

.dark-theme .offcanvas-header {
    border-bottom-color: var(--border-default) !important;
}

/* Override Bootstrap accordion */
.dark-theme .accordion-item {
    background-color: var(--bg-card) !important;
    border-color: var(--border-default) !important;
}

.dark-theme .accordion-button {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
}

.dark-theme .accordion-button:not(.collapsed) {
    background-color: var(--bg-tertiary) !important;
    color: var(--color-primary-500) !important;
}

.dark-theme .accordion-button::after {
    filter: invert(1) !important;
}



/* Fonts */
.fc-danger{ color: var(--color-danger-dark); }