/* ==========================================================================
   SURVEYKIT - Survey & Research Platform
   Premium CSS with Design Tokens
   ========================================================================== */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================================================== */

:root {
    /* Primary Colors - Blue (Survey/Research) */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;
    --color-primary-950: #172554;

    /* Secondary Colors - Analytical Blue */
    --color-secondary-50: #eff6ff;
    --color-secondary-100: #dbeafe;
    --color-secondary-200: #bfdbfe;
    --color-secondary-300: #93c5fd;
    --color-secondary-400: #60a5fa;
    --color-secondary-500: #3b82f6;
    --color-secondary-600: #2563eb;
    --color-secondary-700: #1d4ed8;
    --color-secondary-800: #1e40af;
    --color-secondary-900: #1e3a8a;

    /* Accent Colors - Teal (Success/Insights) */
    --color-accent-50: #f0fdfa;
    --color-accent-100: #ccfbf1;
    --color-accent-200: #99f6e4;
    --color-accent-300: #5eead4;
    --color-accent-400: #2dd4bf;
    --color-accent-500: #14b8a6;
    --color-accent-600: #0d9488;
    --color-accent-700: #0f766e;
    --color-accent-800: #115e59;
    --color-accent-900: #134e4a;

    /* Semantic Colors */
    --color-success: #22c55e;
    --color-success-light: #dcfce7;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-error: #ef4444;
    --color-error-light: #fee2e2;
    --color-info: #3b82f6;
    --color-info-light: #dbeafe;

    /* NPS Score Colors */
    --color-nps-promoter: #22c55e;
    --color-nps-passive: #f59e0b;
    --color-nps-detractor: #ef4444;

    /* Chart Colors */
    --chart-1: #7e22ce;
    --chart-2: #3b82f6;
    --chart-3: #14b8a6;
    --chart-4: #f59e0b;
    --chart-5: #ec4899;
    --chart-6: #8b5cf6;

    /* Neutral Colors - Light Mode */
    --color-white: #ffffff;
    --color-neutral-50: #fafafa;
    --color-neutral-100: #f5f5f5;
    --color-neutral-200: #e5e5e5;
    --color-neutral-300: #d4d4d4;
    --color-neutral-400: #a3a3a3;
    --color-neutral-500: #737373;
    --color-neutral-600: #525252;
    --color-neutral-700: #404040;
    --color-neutral-800: #262626;
    --color-neutral-900: #171717;
    --color-neutral-950: #0a0a0a;
    --color-black: #000000;

    /* Background Colors */
    --bg-primary: var(--color-white);
    --bg-secondary: var(--color-neutral-50);
    --bg-tertiary: var(--color-neutral-100);
    --bg-elevated: var(--color-white);
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* Text Colors */
    --text-primary: var(--color-neutral-900);
    --text-secondary: var(--color-neutral-600);
    --text-tertiary: var(--color-neutral-500);
    --text-muted: var(--color-neutral-400);
    --text-inverse: var(--color-white);

    /* Border Colors */
    --border-default: var(--color-neutral-200);
    --border-hover: var(--color-neutral-300);
    --border-focus: var(--color-primary-500);

    /* Typography - Public Sans (Clear, Professional) */
    --font-sans: 'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Typography Scale (Responsive) */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;

    /* Responsive Typography */
    --text-hero: clamp(2.5rem, 6vw, 4.5rem);
    --text-display: clamp(2rem, 5vw, 3.75rem);
    --text-h1: clamp(1.875rem, 4vw, 3rem);
    --text-h2: clamp(1.5rem, 3vw, 2.25rem);
    --text-h3: clamp(1.25rem, 2.5vw, 1.5rem);
    --text-h4: clamp(1.125rem, 2vw, 1.25rem);
    --text-body-lg: clamp(1.125rem, 1.5vw, 1.25rem);
    --text-body: 1rem;
    --text-body-sm: 0.875rem;

    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* 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 Scale (8px base) */
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    --space-40: 10rem;
    --space-48: 12rem;
    --space-56: 14rem;
    --space-64: 16rem;

    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-4xl: 2rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

    /* Glow Effects */
    --glow-primary: 0 0 20px rgba(59, 130, 246, 0.3);
    --glow-primary-lg: 0 0 40px rgba(59, 130, 246, 0.4);
    --glow-secondary: 0 0 20px rgba(59, 130, 246, 0.3);
    --glow-accent: 0 0 20px rgba(20, 184, 166, 0.3);
    --glow-success: 0 0 20px rgba(34, 197, 94, 0.3);

    /* Card Shadows */
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.1), 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-card-elevated: 0 8px 30px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 150ms;
    --transition-base: 200ms;
    --transition-slow: 300ms;
    --transition-slower: 500ms;
    --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(0.34, 1.56, 0.64, 1);
    --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);

    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;

    /* Layout */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
    --header-height: 4rem;
}

/* ==========================================================================
   DARK MODE TOKENS
   ========================================================================== */

[data-theme="dark"],
.dark {
    --bg-primary: var(--color-neutral-950);
    --bg-secondary: var(--color-neutral-900);
    --bg-tertiary: var(--color-neutral-800);
    --bg-elevated: var(--color-neutral-900);
    --bg-overlay: rgba(0, 0, 0, 0.8);

    --text-primary: var(--color-neutral-50);
    --text-secondary: var(--color-neutral-300);
    --text-tertiary: var(--color-neutral-400);
    --text-muted: var(--color-neutral-500);

    --border-default: var(--color-neutral-800);
    --border-hover: var(--color-neutral-700);

    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-card-elevated: 0 8px 30px rgba(0, 0, 0, 0.5);

    --glow-primary: 0 0 30px rgba(59, 130, 246, 0.4);
    --glow-primary-lg: 0 0 60px rgba(59, 130, 246, 0.5);
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-body);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-slow) var(--ease-default),
                color var(--transition-slow) var(--ease-default);
}

/* Selection Styles */
::selection {
    background-color: var(--color-primary-200);
    color: var(--color-primary-900);
}

.dark ::selection {
    background-color: var(--color-primary-800);
    color: var(--color-primary-100);
}

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

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-3) var(--space-6);
    background: var(--color-primary-600);
    color: var(--color-white);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-lg);
    z-index: var(--z-tooltip);
    transition: top var(--transition-base) var(--ease-default);
}

.skip-link:focus {
    top: var(--space-4);
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--text-primary);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }
h4 { font-size: var(--text-h4); }

.text-hero {
    font-size: var(--text-hero);
    font-weight: var(--font-extrabold);
    line-height: var(--leading-none);
    letter-spacing: var(--tracking-tight);
}

.text-display {
    font-size: var(--text-display);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
}

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

.text-gradient-accent {
    background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-accent-500) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

p {
    color: var(--text-secondary);
}

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

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-lg {
    max-width: var(--container-lg);
}

.container-2xl {
    max-width: var(--container-2xl);
}

.section {
    padding: var(--space-20) 0;
}

.section-lg {
    padding: var(--space-24) 0;
}

.section-xl {
    padding: var(--space-32) 0;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-default);
    z-index: var(--z-fixed);
    transition: all var(--transition-base) var(--ease-default);
}

.dark .navbar {
    background: rgba(10, 10, 10, 0.9);
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    text-decoration: none;
}

.navbar-logo svg {
    width: 2rem;
    height: 2rem;
    color: var(--color-primary-600);
}

.navbar-nav {
    display: none;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

@media (min-width: 1024px) {
    .navbar-nav {
        display: flex;
    }
}

.navbar-nav a {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast) var(--ease-default);
}

.navbar-nav a:hover {
    color: var(--text-primary);
}

.navbar-nav a.active {
    color: var(--color-primary-600);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.navbar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
}

@media (min-width: 1024px) {
    .navbar-toggle {
        display: none;
    }
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    padding: var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition-slow) var(--ease-spring);
    z-index: var(--z-fixed);
    overflow-y: auto;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.mobile-menu a {
    display: block;
    padding: var(--space-4);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast) var(--ease-default);
}

.mobile-menu a:hover {
    background: var(--bg-secondary);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: inherit;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    line-height: var(--leading-normal);
    text-decoration: none;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base) var(--ease-default);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-700) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md), var(--glow-primary);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    box-shadow: var(--shadow-lg), var(--glow-primary-lg);
    transform: translateY(-2px);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--color-primary-600);
    border: 2px solid var(--color-primary-600);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary-600);
    color: var(--color-white);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    border-radius: var(--radius-2xl);
}

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

.btn-icon {
    padding: var(--space-3);
    border-radius: var(--radius-full);
}

/* ==========================================================================
   CARDS
   ========================================================================== */

.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base) var(--ease-default);
}

.card-hover:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.card-elevated {
    box-shadow: var(--shadow-card-elevated);
}

.card-glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.dark .card-glass {
    background: rgba(38, 38, 38, 0.8);
}

/* Feature Card */
.feature-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-8);
}

.feature-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    background: linear-gradient(135deg, var(--color-primary-100) 0%, var(--color-primary-50) 100%);
    border-radius: var(--radius-xl);
    color: var(--color-primary-600);
}

.dark .feature-card-icon {
    background: linear-gradient(135deg, var(--color-primary-900) 0%, var(--color-primary-950) 100%);
    color: var(--color-primary-400);
}

.feature-card-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.feature-card h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
}

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

/* Pricing Card */
.pricing-card {
    position: relative;
    padding: var(--space-8);
    text-align: center;
}

.pricing-card.featured {
    border-color: var(--color-primary-500);
    border-width: 2px;
}

.pricing-card.featured::before {
    content: 'Most Popular';
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-1) var(--space-4);
    background: var(--color-primary-600);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
}

.pricing-card-header {
    margin-bottom: var(--space-6);
}

.pricing-card-name {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.pricing-card-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-1);
}

.pricing-card-amount {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.pricing-card-period {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.pricing-card-features {
    list-style: none;
    margin-bottom: var(--space-8);
    text-align: left;
}

.pricing-card-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-default);
}

.pricing-card-features li:last-child {
    border-bottom: none;
}

.pricing-card-features svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-success);
    flex-shrink: 0;
}

/* ==========================================================================
   DASHBOARD PREVIEW (Hero)
   ========================================================================== */

.dashboard-preview {
    position: relative;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-3xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

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

.dashboard-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
}

.dashboard-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    background: var(--color-success-light);
    color: var(--color-success);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
}

.dark .dashboard-badge {
    background: rgba(34, 197, 94, 0.2);
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.stat-card {
    padding: var(--space-4);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    text-align: center;
}

.stat-value {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

.stat-label {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

/* ==========================================================================
   NPS SCORE RING
   ========================================================================== */

.nps-ring-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.nps-ring {
    position: relative;
    width: 160px;
    height: 160px;
}

.nps-ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.nps-ring-bg {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 12;
}

.nps-ring-progress {
    fill: none;
    stroke: url(#npsGradient);
    stroke-width: 12;
    stroke-linecap: round;
    stroke-dasharray: 408;
    stroke-dashoffset: 408;
    transition: stroke-dashoffset 2s var(--ease-spring);
}

.nps-ring-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.nps-ring-number {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    line-height: 1;
}

.nps-ring-label {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-top: var(--space-1);
}

.nps-rating {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-success-light);
    color: var(--color-success);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
}

.dark .nps-rating {
    background: rgba(34, 197, 94, 0.2);
}

/* ==========================================================================
   RESPONSE RATE CHART
   ========================================================================== */

.response-rate-chart {
    position: relative;
    width: 120px;
    height: 120px;
}

.response-rate-chart svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.rate-bg {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 10;
}

.rate-progress {
    fill: none;
    stroke: var(--color-secondary-500);
    stroke-width: 10;
    stroke-linecap: round;
    stroke-dasharray: 314;
    stroke-dashoffset: 314;
    transition: stroke-dashoffset 1.5s var(--ease-spring);
}

.rate-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

/* ==========================================================================
   PIE CHART
   ========================================================================== */

.pie-chart-container {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.pie-chart {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background: conic-gradient(
        var(--color-nps-promoter) 0% 50%,
        var(--color-nps-passive) 50% 75%,
        var(--color-nps-detractor) 75% 100%
    );
    position: relative;
}

.pie-chart::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background: var(--bg-elevated);
    border-radius: var(--radius-full);
}

.pie-legend {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.pie-legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
}

.pie-legend-dot {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: var(--radius-full);
}

.pie-legend-dot.promoter { background: var(--color-nps-promoter); }
.pie-legend-dot.passive { background: var(--color-nps-passive); }
.pie-legend-dot.detractor { background: var(--color-nps-detractor); }

/* ==========================================================================
   QUESTION PREVIEW
   ========================================================================== */

.question-preview {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.question-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    background: var(--color-primary-100);
    color: var(--color-primary-700);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-3);
}

.dark .question-number {
    background: var(--color-primary-900);
    color: var(--color-primary-300);
}

.question-text {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.question-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.question-option {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast) var(--ease-default);
}

.question-option:hover {
    border-color: var(--color-primary-400);
    background: var(--color-primary-50);
}

.dark .question-option:hover {
    background: var(--color-primary-950);
}

.question-option.selected {
    border-color: var(--color-primary-500);
    background: var(--color-primary-50);
}

.dark .question-option.selected {
    background: var(--color-primary-950);
}

.option-radio {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--border-default);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast) var(--ease-default);
}

.question-option.selected .option-radio {
    border-color: var(--color-primary-500);
    background: var(--color-primary-500);
}

.question-option.selected .option-radio::after {
    content: '';
    width: 0.5rem;
    height: 0.5rem;
    background: var(--color-white);
    border-radius: var(--radius-full);
}

/* ==========================================================================
   QUESTION TYPE CARDS
   ========================================================================== */

.question-type-card {
    position: relative;
    padding: var(--space-6);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base) var(--ease-default);
}

.question-type-card:hover {
    border-color: var(--color-primary-400);
    box-shadow: var(--shadow-card-hover);
}

.question-type-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: var(--color-primary-100);
    color: var(--color-primary-600);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-4);
}

.dark .question-type-icon {
    background: var(--color-primary-900);
    color: var(--color-primary-400);
}

.question-type-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.question-type-name {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.question-type-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

/* Rating Scale Preview */
.rating-scale-preview {
    display: flex;
    gap: var(--space-1);
    margin-top: var(--space-4);
}

.rating-scale-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--text-tertiary);
    transition: all var(--transition-fast) var(--ease-default);
}

.rating-scale-item.active {
    background: var(--color-primary-500);
    color: var(--color-white);
}

/* ==========================================================================
   RESULTS VISUALIZATION
   ========================================================================== */

.bar-chart {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.bar-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.bar-label {
    width: 100px;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    flex-shrink: 0;
}

.bar-track {
    flex: 1;
    height: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary-500), var(--color-secondary-500));
    border-radius: var(--radius-full);
    transition: width 1s var(--ease-spring);
}

.bar-value {
    width: 50px;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    text-align: right;
}

/* ==========================================================================
   TEMPLATE CARDS
   ========================================================================== */

.template-card {
    position: relative;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base) var(--ease-default);
}

.template-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.template-card-image {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--color-primary-100) 0%, var(--color-secondary-100) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.dark .template-card-image {
    background: linear-gradient(135deg, var(--color-primary-950) 0%, var(--color-secondary-950) 100%);
}

.template-card-image svg {
    width: 4rem;
    height: 4rem;
    color: var(--color-primary-400);
    opacity: 0.5;
}

.template-card-badge {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary-600);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
}

.template-card-content {
    padding: var(--space-6);
}

.template-card-category {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--color-primary-600);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-bottom: var(--space-2);
}

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

.template-card-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-4);
}

.template-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.template-card-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

/* ==========================================================================
   INTEGRATION CARDS
   ========================================================================== */

.integration-card {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base) var(--ease-default);
}

.integration-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
}

.integration-logo {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.integration-logo svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--text-tertiary);
}

.integration-info {
    flex: 1;
    min-width: 0;
}

.integration-name {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.integration-desc {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* ==========================================================================
   BLOG CARDS
   ========================================================================== */

.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base) var(--ease-default);
}

.blog-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.blog-card-image {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--color-primary-100) 0%, var(--color-accent-100) 100%);
    overflow: hidden;
}

.dark .blog-card-image {
    background: linear-gradient(135deg, var(--color-primary-950) 0%, var(--color-accent-950) 100%);
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow) var(--ease-default);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-bottom: var(--space-3);
}

.blog-card-category {
    color: var(--color-primary-600);
    font-weight: var(--font-medium);
}

.blog-card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    line-height: var(--leading-snug);
}

.blog-card-excerpt {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-4);
    flex: 1;
}

.blog-card-author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.blog-card-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: var(--color-primary-100);
}

.dark .blog-card-avatar {
    background: var(--color-primary-900);
}

.blog-card-author-name {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
}

/* ==========================================================================
   TEAM CARDS
   ========================================================================== */

.team-card {
    text-align: center;
    padding: var(--space-8);
}

.team-card-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-6);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary-100) 0%, var(--color-secondary-100) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.dark .team-card-avatar {
    background: linear-gradient(135deg, var(--color-primary-900) 0%, var(--color-secondary-900) 100%);
}

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

.team-card-name {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.team-card-role {
    font-size: var(--text-sm);
    color: var(--color-primary-600);
    margin-bottom: var(--space-4);
}

.team-card-bio {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--space-4);
}

.team-card-social {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
}

.team-card-social a {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast) var(--ease-default);
}

.team-card-social a:hover {
    background: var(--bg-secondary);
    color: var(--color-primary-600);
}

/* ==========================================================================
   TESTIMONIALS
   ========================================================================== */

.testimonial-card {
    padding: var(--space-8);
}

.testimonial-quote {
    font-size: var(--text-lg);
    font-style: italic;
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.testimonial-quote::before {
    content: '"';
}

.testimonial-quote::after {
    content: '"';
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.testimonial-avatar {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-full);
    background: var(--color-primary-100);
}

.dark .testimonial-avatar {
    background: var(--color-primary-900);
}

.testimonial-name {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.testimonial-title {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq-item {
    border-bottom: 1px solid var(--border-default);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-6) 0;
    background: transparent;
    border: none;
    font-family: inherit;
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-fast) var(--ease-default);
}

.faq-question:hover {
    color: var(--color-primary-600);
}

.faq-icon {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--text-tertiary);
    transition: transform var(--transition-base) var(--ease-default);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) var(--ease-default);
}

.faq-answer-content {
    padding-bottom: var(--space-6);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* ==========================================================================
   FORMS
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-6);
}

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

.form-input {
    width: 100%;
    padding: var(--space-4);
    font-family: inherit;
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    transition: all var(--transition-fast) var(--ease-default);
}

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

.dark .form-input:focus {
    box-shadow: 0 0 0 3px var(--color-primary-900);
}

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

textarea.form-input {
    resize: vertical;
    min-height: 120px;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--color-primary-600);
    flex-shrink: 0;
    margin-top: 2px;
}

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

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-default);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

@media (max-width: 1023px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 639px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: var(--space-4);
}

.footer-logo svg {
    width: 2rem;
    height: 2rem;
    color: var(--color-primary-600);
}

.footer-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social a {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--ease-default);
}

.footer-social a:hover {
    background: var(--color-primary-600);
    color: var(--color-white);
}

.footer-column h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-bottom: var(--space-4);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast) var(--ease-default);
}

.footer-links a:hover {
    color: var(--color-primary-600);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-default);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--space-4);
}

.footer-copyright {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-legal a {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast) var(--ease-default);
}

.footer-legal a:hover {
    color: var(--color-primary-600);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-spring),
                transform 0.8s var(--ease-spring);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s var(--ease-spring);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s var(--ease-spring);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s var(--ease-spring);
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

/* Stagger Delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }
.stagger-7 { transition-delay: 0.7s; }
.stagger-8 { transition-delay: 0.8s; }

/* Float Animation */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

/* Spin Animation */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

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

.animate-gradient {
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
}

/* Ring Pulse (for dashboard) */
@keyframes ring-pulse {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.5); opacity: 0; }
}

.ring-pulse {
    animation: ring-pulse 2s ease-out infinite;
}

/* Data Loading Animation */
@keyframes data-load {
    0% { width: 0; }
    100% { width: var(--target-width); }
}

.data-bar {
    animation: data-load 1.5s var(--ease-spring) forwards;
}

/* Counter Animation */
@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.count-up {
    animation: countUp 0.5s var(--ease-spring) forwards;
}

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

    .reveal, .reveal-left, .reveal-right, .reveal-scale {
        opacity: 1;
        transform: none;
    }
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

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

.text-primary { color: var(--color-primary-600); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }

.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flex */
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.flex-1 { flex: 1; }

/* Gap */
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-12 { gap: var(--space-12); }

/* Spacing */
.mt-auto { margin-top: auto; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }

.pt-header { padding-top: var(--header-height); }

/* Width */
.w-full { width: 100%; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }

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

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* Border Radius */
.rounded { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadows */
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* ==========================================================================
   RESPONSIVE VISIBILITY
   ========================================================================== */

@media (max-width: 639px) {
    .sm\:hidden { display: none; }
}

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

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

@media (min-width: 768px) {
    .md\:block { display: block; }
    .md\:flex { display: flex; }
    .md\:grid { display: grid; }
}

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

@media (min-width: 1024px) {
    .lg\:block { display: block; }
    .lg\:flex { display: flex; }
    .lg\:grid { display: grid; }
}

/* ==========================================================================
   SCROLLBAR STYLES
   ========================================================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-neutral-300);
    border-radius: var(--radius-full);
}

.dark ::-webkit-scrollbar-thumb {
    background: var(--color-neutral-700);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-neutral-400);
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: var(--color-neutral-600);
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .navbar,
    .footer,
    .btn,
    .mobile-menu {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        padding: 1rem 0;
    }
}

/* ==========================================================================
   PERFORMANCE OPTIMIZATIONS
   ========================================================================== */

.section {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

img {
    content-visibility: auto;
}

/* GPU Acceleration for Animations */
.card-hover,
.btn,
.reveal,
.reveal-left,
.reveal-right,
.reveal-scale {
    will-change: transform, opacity;
    transform: translateZ(0);
}