/* =============================================================================
   themiyan.github.io — cosmic design system
   Palette drawn from the JADC banner: JWST gold on deep-space blue-black.
   Structure:  1) tokens  2) reset/base  3) typography  4) layout/utilities
               5) nav  6) buttons/tags/cards  7) stats  8) footer
               9) reveal/motion  10) responsive
   Section- and widget-specific styles live in sections.css.
   ============================================================================= */

/* ---- 1. Design tokens ---------------------------------------------------- */
:root {
  /* deep space backgrounds */
  --space-900: #04060d;
  --space-850: #06080f;
  --space-800: #080b16;
  --space-700: #0c1120;
  --space-600: #121a30;
  --space-500: #1b2540;

  /* JWST gold */
  --gold:        #e8b84b;
  --gold-bright: #ffd277;
  --gold-deep:   #c8912f;
  --gold-glow:   rgba(232, 184, 75, 0.35);

  /* starlight / nebula blue */
  --star:  #dbe6ff;
  --blue:  #6d8fd6;
  --blue-deep: #3a5490;
  --cyan:  #7fd6e8;

  /* text */
  --text:       #e9edf8;
  --text-dim:   #9fadc9;
  --text-faint: #8c99b8;

  /* lines & surfaces */
  --border:      rgba(255, 255, 255, 0.10);
  --border-soft: rgba(255, 255, 255, 0.06);
  --card:        rgba(255, 255, 255, 0.028);
  --card-hover:  rgba(255, 255, 255, 0.055);

  /* type */
  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:    "Space Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* fluid type scale */
  --fs-hero:  clamp(2.6rem, 7vw, 5.6rem);
  --fs-h2:    clamp(1.9rem, 4vw, 3rem);
  --fs-h3:    clamp(1.15rem, 2vw, 1.45rem);
  --fs-lead:  clamp(1.05rem, 1.6vw, 1.3rem);
  --fs-body:  1.02rem;
  --fs-small: 0.86rem;

  /* spacing / rhythm */
  --pad-section: clamp(4.5rem, 10vw, 9rem);
  --container:   1180px;
  --radius:      16px;
  --radius-sm:   10px;

  --shadow:      0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --shadow-gold: 0 0 0 1px rgba(232,184,75,0.25), 0 20px 50px -20px rgba(232,184,75,0.25);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- 2. Reset / base ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text);
  background: var(--space-900);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* the whole page sits on a subtle vertical nebula gradient */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1200px 800px at 78% -5%, rgba(58, 84, 144, 0.28), transparent 60%),
    radial-gradient(1000px 700px at 8% 12%, rgba(232, 184, 75, 0.06), transparent 55%),
    linear-gradient(180deg, var(--space-900) 0%, var(--space-850) 40%, var(--space-900) 100%);
}

img { max-width: 100%; display: block; height: auto; }
a { color: var(--gold); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--gold-bright); }
ul { list-style: none; padding: 0; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }

::selection { background: var(--gold); color: var(--space-900); }

/* scrollbar */
::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--space-900); }
::-webkit-scrollbar-thumb { background: #23304e; border-radius: 10px; border: 3px solid var(--space-900); }
::-webkit-scrollbar-thumb:hover { background: var(--blue-deep); }

/* ---- 3. Typography ------------------------------------------------------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); letter-spacing: -0.01em; }
p { color: var(--text-dim); }
strong { color: var(--text); font-weight: 600; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.gold { color: var(--gold); }
.text-gradient {
  background: linear-gradient(120deg, var(--gold-bright), var(--gold) 45%, var(--blue) 120%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---- 4. Layout / utilities ---------------------------------------------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: clamp(1.2rem, 5vw, 2.5rem); }

.section { position: relative; padding-block: var(--pad-section); }
.section-alt { background: linear-gradient(180deg, transparent, rgba(9,13,24,0.6) 12%, rgba(9,13,24,0.6) 88%, transparent); }

.section-head { max-width: 720px; margin-bottom: 3rem; }
.section-head h2 { margin: 0.9rem 0 1rem; }
.section-head .lead { font-size: var(--fs-lead); color: var(--text-dim); }

.grid { display: grid; gap: clamp(1rem, 2.5vw, 1.6rem); }
.hr-glow { height: 1px; border: 0; background: linear-gradient(90deg, transparent, var(--border), transparent); margin: 0; }

/* thin decorative divider used between major bands */
.starline { height: 1px; background: linear-gradient(90deg, transparent, var(--gold-glow), transparent); }

/* ---- 5. Navigation ------------------------------------------------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem clamp(1.2rem, 5vw, 2.5rem);
  transition: background 0.3s var(--ease), backdrop-filter 0.3s, border-color 0.3s, padding 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(6, 8, 15, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border-soft);
  padding-block: 0.65rem;
}
.nav__brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; color: var(--text); }
.nav__brand img { width: 30px; height: 30px; }
.nav__brand span small { display: block; font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.2em; color: var(--text-faint); text-transform: uppercase; }
.nav__links { display: flex; align-items: center; gap: 0.35rem; }
.nav__links a {
  color: var(--text-dim); font-size: 0.9rem; padding: 0.45rem 0.8rem; border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.nav__links a:hover, .nav__links a.active { color: var(--text); background: rgba(255,255,255,0.05); }
.nav__toggle { display: none; background: none; border: 0; color: var(--text); width: 42px; height: 42px; border-radius: 8px; }
.nav__toggle svg { width: 24px; height: 24px; }

/* ---- 6. Buttons / tags / cards ------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.8rem 1.4rem; border-radius: 100px; font-weight: 600; font-size: 0.94rem;
  border: 1px solid transparent; transition: transform 0.2s var(--ease), box-shadow 0.2s, background 0.2s, color 0.2s;
  will-change: transform;
}
.btn--primary { background: linear-gradient(135deg, var(--gold-bright), var(--gold-deep)); color: #241a05; box-shadow: var(--shadow-gold); }
.btn--primary:hover { transform: translateY(-2px); color: #241a05; box-shadow: 0 0 0 1px var(--gold), 0 18px 40px -12px var(--gold-glow); }
.btn--ghost { background: rgba(255,255,255,0.04); color: var(--text); border-color: var(--border); }
.btn--ghost:hover { background: rgba(255,255,255,0.08); color: var(--text); transform: translateY(-2px); }
.btn svg { width: 17px; height: 17px; }

.tag {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.04em;
  padding: 0.28rem 0.62rem; border-radius: 100px;
  color: var(--blue); background: rgba(109, 143, 214, 0.10); border: 1px solid rgba(109,143,214,0.22);
}
.tag--gold { color: var(--gold); background: rgba(232,184,75,0.10); border-color: rgba(232,184,75,0.28); }

.card {
  background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: clamp(1.4rem, 2.5vw, 2rem);
  transition: transform 0.3s var(--ease), border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.card:hover { transform: translateY(-4px); border-color: var(--border); background: var(--card-hover); box-shadow: var(--shadow); }

/* ---- 7. Stat row --------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--border-soft); border: 1px solid var(--border-soft); border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--space-850); padding: 1.5rem 1.2rem; text-align: center; }
.stat__value { font-family: var(--font-display); font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 600; color: var(--gold); line-height: 1; }
.stat__label { font-size: 0.86rem; color: var(--text); margin-top: 0.5rem; font-weight: 500; }
.stat__note { font-size: 0.72rem; color: var(--text-faint); margin-top: 0.2rem; }

/* ---- 8. Footer ----------------------------------------------------------- */
.footer { padding: 4rem 0 3rem; border-top: 1px solid var(--border-soft); text-align: center; position: relative; }
.footer__socials { display: flex; justify-content: center; gap: 0.8rem; margin: 1.6rem 0; flex-wrap: wrap; }
.footer__socials a {
  width: 46px; height: 46px; display: grid; place-items: center; border-radius: 50%;
  background: var(--card); border: 1px solid var(--border); color: var(--text-dim);
  transition: all 0.25s var(--ease);
}
.footer__socials a:hover { color: var(--gold); border-color: var(--gold); transform: translateY(-3px); box-shadow: var(--shadow-gold); }
.footer__socials svg { width: 20px; height: 20px; }
.footer small { color: var(--text-faint); font-size: 0.8rem; }

/* ---- 9. Reveal on scroll ------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { 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; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* ---- 10. Responsive ------------------------------------------------------ */
@media (max-width: 860px) {
  .nav__links { position: fixed; top: 0; right: 0; left: auto; height: 100vh; height: 100dvh; width: min(78vw, 320px); overflow-y: auto; flex-direction: column; align-items: stretch; justify-content: flex-start; gap: 0.2rem; padding: 5rem 1.4rem 2rem; background: rgba(6,8,15,0.97); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-left: 1px solid var(--border); transform: translateX(100%); visibility: hidden; transition: transform 0.35s var(--ease), visibility 0s linear 0.35s; }
  .nav__links.open { transform: none; visibility: visible; transition: transform 0.35s var(--ease), visibility 0s; }
  .nav__links a { font-size: 1.05rem; padding: 0.85rem 1rem; }
  .nav__toggle { display: grid; place-items: center; z-index: 101; }
}