/* ============================================================
   VITALITY — DESIGN TOKENS
   Single source of truth for all CSS variables, reset, and base styles.
   Load this first on every page.
   ============================================================ */

/* ---- Font imports ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
@import url('https://api.fontshare.com/v2/css?f[]=clash-display@400,500,600,700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ---- All design tokens ---- */
:root {
  /* Base background — never pure black */
  --el-bg:  #0a0a0c;
  --el-bg-2: #0d0b12;

  /* Surface layers */
  --el-surface:        rgba(20, 16, 32, 0.55);
  --el-surface-strong: rgba(22, 18, 36, 0.78);

  /* Hairlines */
  --el-hairline:        rgba(255, 255, 255, 0.08);
  --el-hairline-strong: rgba(255, 255, 255, 0.14);

  /* Accent system */
  --el-violet:       #9147ff;
  --el-violet-bright: #b57bff;
  --el-violet-deep:  #6d28d9;
  --el-electric:     #38bdf8;
  --el-accent-rgb:   145, 71, 255;

  /* Legacy aliases (match older token names) */
  --primary:       #7534b3;
  --primary-light: #8b1cfb;
  --primary-dark:  #4a1c7a;
  --primary-rgb:   117, 52, 179;

  --accent:       #9147ff;
  --accent-light: #b57bff;
  --accent-dark:  #7225e3;
  --accent-rgb:   145, 71, 255;

  --color-violet:        #9147ff;
  --color-violet-bright: #b57bff;

  /* Background legacy aliases */
  --bg-dark:    #0a0a0c;
  --bg-darker:  #0d0b12;
  --bg-light:   #1a1a1a;
  --bg-lighter: #2a2a2a;

  /* Card system */
  --el-card-bg:     rgba(14, 11, 26, 0.62);
  --el-card-border: rgba(255, 255, 255, 0.08);
  --el-card-radius: 16px;
  --el-card-shadow: 0 2px 0 0 rgba(255,255,255,0.04) inset, 0 8px 32px -8px rgba(0,0,0,0.6);

  /* Text */
  --text-light: #f8f8f8;
  --text-dim:   rgba(255, 255, 255, 0.60);
  --text-muted: rgba(255, 255, 255, 0.40);

  /* Borders */
  --border-light:  rgba(255, 255, 255, 0.10);
  --border-medium: rgba(255, 255, 255, 0.20);
  --border-dark:   rgba(255, 255, 255, 0.05);

  /* Typography */
  --font-heading: 'Clash Display', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Spacing scale */
  --space-xs:  0.25rem;   /* 4px  */
  --space-sm:  0.5rem;    /* 8px  */
  --space-md:  1rem;      /* 16px */
  --space-lg:  1.5rem;    /* 24px */
  --space-xl:  2rem;      /* 32px */
  --space-2xl: 3rem;      /* 48px */
  --space-3xl: 4rem;      /* 64px */
  /* Legacy aliases */
  --spacing-xs:  var(--space-xs);
  --spacing-sm:  var(--space-sm);
  --spacing-md:  var(--space-md);
  --spacing-lg:  var(--space-lg);
  --spacing-xl:  var(--space-xl);
  --spacing-2xl: var(--space-2xl);
  --spacing-3xl: var(--space-3xl);
  --spacing-section-top:    120px;
  --spacing-section-bottom: 60px;
  --spacing-gap-large:  50px;
  --spacing-gap-medium: 30px;
  --spacing-gap-small:  20px;
  --spacing-gap-xs:     15px;

  /* Border radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.10);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.10);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.10);
  --shadow-xl:  0 20px 25px rgba(0,0,0,0.15);
  --shadow-2xl: 0 25px 35px rgba(0,0,0,0.20);
  --shadow-glow: 0 0 20px rgba(var(--accent-rgb), 0.30);

  /* Glow system */
  --el-glow-soft:   0 0 0 1px rgba(255,255,255,0.05), 0 20px 50px -20px rgba(0,0,0,0.7);
  --el-glow-violet: 0 0 60px -12px rgba(145, 71, 255, 0.45);
  --el-shadow-card: 0 24px 60px -28px rgba(0,0,0,0.85), inset 0 1px 0 rgba(255,255,255,0.06);

  /* Transitions */
  --transition-fast:   0.2s cubic-bezier(0.76, 0, 0.24, 1);
  --transition-medium: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow:   0.8s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s ease;
  --el-ease:           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;

  /* Status */
  --success: #10b981;
  --warning: #f59e0b;
  --error:   #ef4444;
  --info:    #3b82f6;

  /* Secondary accent */
  --secondary:       #0ea5e9;
  --secondary-light: #06b6d4;
  --secondary-dark:  #0369a1;

  /* Gradients */
  --gradient-primary:       linear-gradient(135deg, var(--primary), var(--primary-light), var(--accent-light));
  --gradient-primary-hover: linear-gradient(135deg, var(--primary-light), var(--accent), var(--accent-light));
  --gradient-accent:        linear-gradient(135deg, var(--accent), var(--accent-light));

  /* Layout */
  --el-maxw: 1240px;
}

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

/* ---- Disable text selection on all non-interactive elements ---- */
body {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
/* Re-enable selection only where it makes sense */
input, textarea, select, [contenteditable],
code, pre, .doc-section code, .doc-section pre {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}
/* Prevent iOS long-press callout on links/images */
a, img { -webkit-touch-callout: none; }

html {
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
  -webkit-text-size-adjust: 100%;
  min-height: 100%;
  /* Aurora gradient lives on html so the body can be transparent (lets shader canvas show) */
  background:
    radial-gradient(900px 600px at 70% -10%, rgba(145,71,255,0.10), transparent 55%),
    linear-gradient(180deg, var(--el-bg) 0%, var(--el-bg-2) 100%);
  background-attachment: fixed;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-light);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- Base typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.8rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }
h5 { font-size: 1.2rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--space-md);
  line-height: 1.7;
  color: var(--text-dim);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--text-light); }

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, .button {
  cursor: pointer;
  font-family: var(--font-body);
  border: none;
  background: none;
  color: inherit;
}

ul, ol { list-style: none; }
li { line-height: 1.6; }

strong { font-weight: 600; color: var(--text-light); }
em { font-style: italic; color: var(--text-dim); }

code {
  font-family: var(--font-mono);
  background: rgba(0,0,0,0.3);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  color: var(--accent-light);
}

pre {
  background: rgba(0,0,0,0.4);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--space-lg) 0;
  border: 1px solid var(--border-light);
}
pre code { background: none; padding: 0; color: var(--text-light); }

/* ---- Sticky footer ---- */
.footer { margin-top: auto; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--el-bg-2); }
::-webkit-scrollbar-thumb { background: var(--border-medium); border-radius: var(--radius-sm); }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ---- Selection ---- */
::selection { background: rgba(var(--accent-rgb), 0.3); color: var(--text-light); }
::-moz-selection { background: rgba(var(--accent-rgb), 0.3); color: var(--text-light); }

/* ---- Keyframe animations ---- */
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes fadeIn    { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp   { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn   { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

/* Scroll-reveal animation utility */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--el-ease), transform 0.7s var(--el-ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }

/* JS animation classes — all start hidden, .visible makes them appear */
.fade-in, .fade-in-up, .fade-in-left, .fade-in-right, .scale-in {
  opacity: 0;
  transition: opacity var(--transition-medium), transform var(--transition-medium);
}
.fade-in       { transform: translateY(30px); }
.fade-in-up    { transform: translateY(50px); }
.fade-in-left  { transform: translateX(-30px); }
.fade-in-right { transform: translateX(30px); }
.scale-in      { transform: scale(0.8); }

.fade-in.visible,
.fade-in-up.visible,
.fade-in-left.visible,
.fade-in-right.visible,
.scale-in.visible { opacity: 1; transform: none; }

/* Force these visible when modern.js is absent (no JS reveal gate) */
.fade-in, .fade-in-up, .fade-in-left, .fade-in-right, .scale-in,
[class*="-header"] h1,
.pricing-card-v2, .pricing-hero-header, .pricing-content,
.pcard-features, .pcard-header, .pcard-btn,
.revealed, [class*="-revealed"] {
  opacity: 1 !important;
  transform: none !important;
  animation: none !important;
}