/* ================================================================
   WEBAPPTOWN DESIGN SYSTEM - BASE
   Flagship AI Studio Visual Identity
   ================================================================ */

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

:root {
  /* === COLOR SYSTEM === */
  
  /* Primary Palette */
  --color-primary: #0A0A0F;
  --color-primary-light: #18181B;
  --color-primary-dark: #050507;
  
  /* Accent - Teal (logo-harmonized, pulled toward logo green-teal) */
  --color-accent: #0d9488;
  --color-accent-light: #14b8a6;
  --color-accent-dark: #0f766e;
  
  /* AI Glow - Cyan */
  --color-ai: #22D3EE;
  --color-ai-light: #67E8F9;
  --color-ai-dark: #06B6D4;
  
  /* Status Colors */
  --color-success: #10B981;
  --color-success-light: #34D399;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  
  /* Surfaces */
  --color-surface: #18181B;
  --color-surface-elevated: #27272A;
  --color-surface-overlay: rgba(24, 24, 27, 0.8);
  
  /* Text */
  --color-text: #FAFAFA;
  --color-text-secondary: #A1A1AA;
  --color-text-muted: #71717A;
  --color-text-inverse: #0A0A0F;
  
  /* Borders */
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-strong: rgba(255, 255, 255, 0.2);
  
  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0A0A0F 0%, #18181B 50%, #0A0A0F 100%);
  --gradient-accent: linear-gradient(135deg, #0d9488 0%, #14b8a6 100%);
  --gradient-ai: linear-gradient(135deg, #22D3EE 0%, #0d9488 100%);
  --gradient-glow: radial-gradient(circle, rgba(13, 148, 136, 0.35) 0%, transparent 70%);
  --gradient-mesh: 
    radial-gradient(at 40% 20%, rgba(13, 148, 136, 0.18) 0px, transparent 50%),
    radial-gradient(at 80% 0%, rgba(34, 211, 238, 0.1) 0px, transparent 50%),
    radial-gradient(at 0% 50%, rgba(13, 148, 136, 0.12) 0px, transparent 50%),
    radial-gradient(at 80% 50%, rgba(20, 184, 166, 0.1) 0px, transparent 50%),
    radial-gradient(at 0% 100%, rgba(34, 211, 238, 0.1) 0px, transparent 50%);
  
  /* === TYPOGRAPHY === */
  
  /* Font Families */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.925rem + 0.375vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3.5rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 5rem);
  --text-6xl: clamp(3.75rem, 2.5rem + 6.25vw, 6rem);
  
  /* Font Weights */
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;
  --weight-black: 900;
  
  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --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-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-64: 16rem;
  
  /* === LAYOUT === */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  
  /* === EFFECTS === */
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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-glow: 0 0 40px rgba(13, 148, 136, 0.35);
  --shadow-glow-ai: 0 0 60px rgba(34, 211, 238, 0.2);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  
  /* Blur */
  --blur-sm: 4px;
  --blur-md: 8px;
  --blur-lg: 16px;
  --blur-xl: 24px;
  --blur-2xl: 40px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 600ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Easing */
  --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);
  
  /* Z-Index Scale */
  --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;
}

/* ----------------------------------------------------------------
   CSS RESET
   ---------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Remove default margins */
h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd {
  margin: 0;
}

/* Remove list styles */
ul, ol {
  list-style: none;
}

/* Set core root defaults */
html:focus-within {
  scroll-behavior: smooth;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
}

/* Media defaults */
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Inherit fonts for inputs and buttons */
input, button, textarea, select {
  font: inherit;
  color: inherit;
}

/* Remove animations for people who've turned them off */
@media (prefers-reduced-motion: reduce) {
  html:focus-within {
    scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ----------------------------------------------------------------
   TYPOGRAPHY STYLES
   ---------------------------------------------------------------- */

/* Display Headings - Space Grotesk */
.heading-display {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h1, .h1 {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-none);
  letter-spacing: var(--tracking-tighter);
}

h2, .h2 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h3, .h3 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
}

h4, .h4 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
}

h5, .h5 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
}

h6, .h6 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
}

/* Body Text */
.text-body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
}

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

.text-body-sm {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

/* Monospace / Code */
.text-mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

code, pre {
  font-family: var(--font-mono);
}

/* Text Colors */
.text-primary { color: var(--color-text); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-ai { color: var(--color-ai); }
.text-success { color: var(--color-success); }

/* Gradient Text */
.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.text-gradient-ai {
  background: var(--gradient-ai);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ----------------------------------------------------------------
   LAYOUT UTILITIES
   ---------------------------------------------------------------- */

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

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

/* Section Spacing */
.section {
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

.section-lg {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

/* Flex Utilities */
.flex { display: 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; }
.gap-1 { gap: var(--space-1); }
.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); }

/* Grid */
.grid { display: grid; }

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

/* ----------------------------------------------------------------
   SELECTION & SCROLLBAR
   ---------------------------------------------------------------- */

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

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

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

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

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

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-surface-elevated) var(--color-primary);
}