/* === YOUNI SUMMER CAMP 2026 — Landing Page ===================== */

:root {
  /* Palette — dark ink base with magenta primary, indigo secondary, gold accent */
  --ink: oklch(0.14 0.025 290);
  --ink-2: oklch(0.18 0.028 290);
  --ink-3: oklch(0.22 0.032 290);
  --surface: oklch(0.20 0.030 285 / 0.65);
  --surface-2: oklch(0.24 0.034 285 / 0.55);
  --line: oklch(0.97 0.01 80 / 0.10);
  --line-2: oklch(0.97 0.01 80 / 0.18);

  --fg: oklch(0.97 0.012 80);
  --fg-muted: oklch(0.78 0.015 80);
  --fg-dim: oklch(0.60 0.018 80);

  --magenta: oklch(0.66 0.245 0);
  --magenta-soft: oklch(0.70 0.18 0);
  --magenta-glow: oklch(0.66 0.245 0 / 0.45);
  --indigo: oklch(0.66 0.21 268);
  --indigo-glow: oklch(0.66 0.21 268 / 0.40);
  --gold: oklch(0.84 0.14 82);
  --gold-soft: oklch(0.84 0.10 82);

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --shadow-card: 0 1px 0 0 oklch(0.97 0.01 80 / 0.06) inset, 0 30px 60px -30px oklch(0 0 0 / 0.6);
  --shadow-cta: 0 12px 40px -8px var(--magenta-glow), 0 1px 0 0 oklch(0.97 0.01 80 / 0.2) inset;

  --container: 1240px;
  --gutter: clamp(20px, 4vw, 56px);

  --ease: cubic-bezier(.2,.7,.2,1);
}

/* === Reset & base ============================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--fg);
  font-family: "Geist", "Inter", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }

/* Ambient color wash */
body::before {
  content: "";
  position: fixed;
  inset: -20% -10% auto -10%;
  height: 80vh;
  background:
    radial-gradient(50% 60% at 20% 20%, oklch(0.66 0.245 0 / 0.16), transparent 70%),
    radial-gradient(40% 50% at 85% 0%, oklch(0.66 0.21 268 / 0.18), transparent 70%);
  z-index: -1;
  pointer-events: none;
  filter: blur(20px);
}

/* === Typography ================================================ */
.display {
  font-family: "Instrument Serif", "Cormorant Garamond", "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.08;
}
.display em {
  font-style: italic;
  color: var(--gold);
  font-family: inherit;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}
.eyebrow.no-line::before { display: none; }
.mono { font-family: "Geist Mono", "JetBrains Mono", ui-monospace, monospace; }

/* === Layout helpers ============================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  position: relative;
  padding-block: clamp(72px, 10vw, 140px);
}
.section-tight { padding-block: clamp(56px, 7vw, 96px); }
.section-head {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 820px;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.section-head .lead {
  font-size: clamp(17px, 1.4vw, 19px);
  color: var(--fg-muted);
  max-width: 640px;
  text-wrap: pretty;
}

/* === Buttons =================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.005em;
  transition: transform .2s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn svg { width: 14px; height: 14px; }
.btn-primary {
  background: var(--magenta);
  color: white;
  box-shadow: var(--shadow-cta);
}
.btn-primary:hover { transform: translateY(-1px); background: oklch(0.70 0.245 0); }
.btn-ghost {
  background: transparent;
  border-color: var(--line-2);
  color: var(--fg);
}
.btn-ghost:hover { background: oklch(0.97 0.01 80 / 0.06); border-color: oklch(0.97 0.01 80 / 0.35); }
.btn-gold {
  background: var(--gold);
  color: oklch(0.20 0.05 60);
}
.btn-gold:hover { background: oklch(0.88 0.14 82); }
.btn-lg { padding: 18px 28px; font-size: 16px; }
.btn-block { width: 100%; }

/* === Cards ===================================================== */
.card {
  background: linear-gradient(180deg, oklch(0.22 0.030 285 / 0.55), oklch(0.18 0.028 290 / 0.55));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
}

/* === Badges / chips ============================================ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: oklch(0.97 0.01 80 / 0.03);
  font-size: 13px;
  color: var(--fg-muted);
  font-family: "Geist Mono", ui-monospace, monospace;
  letter-spacing: 0.01em;
}
.chip .dot {
  width: 6px; height: 6px; border-radius: 999px; background: var(--gold);
}
.chip.chip-magenta .dot { background: var(--magenta); }
.chip.chip-indigo .dot { background: var(--indigo); }

/* === Utility =================================================== */
.hide-mobile { display: initial; }
.show-mobile { display: none; }
@media (max-width: 760px) {
  .hide-mobile { display: none; }
  .show-mobile { display: initial; }
}