/* ============================================================
   KunaBox Landing 2.0 — Base: reset, variables, keyframes, globals
   ============================================================ */

/* ── CSS variables ─────────────────────────────────────────── */
:root {
  /* colors */
  --color-bg:          #0A0814;
  --color-bg-card:     rgba(20, 18, 31, 0.72);
  --color-bg-card-hov: rgba(20, 18, 31, 0.95);
  --color-text:        #ffffff;
  --color-text-muted:  rgba(255, 255, 255, 0.66);
  --color-text-dim:    rgba(255, 255, 255, 0.42);
  --color-text-mid:    rgba(255, 255, 255, 0.75);

  --color-accent:      #7C3AED;
  --color-accent-dark: #6D28D9;
  --color-accent-deep: #5B21B6;
  --color-teal:        #2DD4BF;
  --color-purple-soft: #A78BFA;
  --color-purple-pale: #C4B5FD;

  --color-border:      rgba(255, 255, 255, 0.07);
  --color-border-mid:  rgba(255, 255, 255, 0.12);
  --color-border-accent: rgba(124, 58, 237, 0.3);
  --color-border-teal: rgba(45, 212, 191, 0.3);

  /* typography */
  --font-sans:  'Instrument Sans', sans-serif;
  --font-grotesk: 'Space Grotesk', sans-serif;
  --font-mono:  'JetBrains Mono', monospace;

  /* spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  32px;
  --space-xl:  48px;
  --space-2xl: 80px;
  --space-3xl: 100px;

  /* radii */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  /* shadows */
  --shadow-accent:     0 8px 28px rgba(124, 58, 237, 0.42);
  --shadow-accent-hov: 0 14px 38px rgba(124, 58, 237, 0.6);
  --shadow-card-hov:   0 16px 44px rgba(0, 0, 0, 0.45);
  --shadow-teal:       0 0 8px var(--color-teal);

  /* z-index layers */
  --z-canvas:   0;
  --z-content:  2;
  --z-nav:      50;
  --z-menu:     49;
  --z-progress: 100;
  --z-modal:    200;
  --z-loader:   400;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* ── Base body ─────────────────────────────────────────────── */
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  overflow-x: hidden;
  line-height: 1.5;
}

::selection {
  background: rgba(124, 58, 237, 0.5);
}

/* ── Utility: section wrapper ──────────────────────────────── */
.kb-section {
  position: relative;
  z-index: var(--z-content);
  padding: var(--space-3xl) var(--space-xl);
}

.kb-container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* ── Utility: section kicker (overline label) ──────────────── */
.kb-kicker {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-teal);
  margin-bottom: 14px;
}

/* ── Utility: section heading ──────────────────────────────── */
.kb-heading {
  font-family: var(--font-grotesk);
  font-weight: 600;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* ── Utility: card ─────────────────────────────────────────── */
.kb-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform 0.25s, border-color 0.25s, background 0.25s, box-shadow 0.25s;
}

/* ── Utility: primary button ───────────────────────────────── */
.kb-btn-primary {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: var(--color-text);
  border: none;
  border-radius: var(--radius-md);
  padding: 15px 30px;
  font-family: var(--font-grotesk);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.2, 0.9, 0.3, 1);
  box-shadow: var(--shadow-accent);
}

/* ── Utility: secondary button ─────────────────────────────── */
.kb-btn-secondary {
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--color-text);
  border-radius: var(--radius-md);
  padding: 15px 30px;
  font-family: var(--font-grotesk);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.25s;
}

/* ── Hero entrance fade classes (stepped by JS) ────────────── */
.kb-fade1,
.kb-fade2,
.kb-fade3,
.kb-fade4,
.kb-fade5 {
  opacity: 0;
}

/* ── Keyframes ─────────────────────────────────────────────── */
@keyframes kbPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

@keyframes kbBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

@keyframes kbDraw {
  0%   { stroke-dashoffset: 170; }
  60%  { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -170; }
}

@keyframes kbNode {
  0%, 100% { opacity: 0.25; }
  50%       { opacity: 1; }
}