/* ==========================================================================
   MadWest Rocketry × NASA OSDR — shared styles
   Theme: deep-space night sky + botanical green growth
   ========================================================================== */

:root {
  --space-900: #0a0e1a;
  --space-800: #111729;
  --space-700: #1a2238;
  --space-600: #26324f;
  --ink: #e8edf7;
  --ink-soft: #aab6cf;
  --ink-faint: #6f7d9c;
  --leaf-500: #36c97f;
  --leaf-400: #5ee0a0;
  --leaf-300: #8af2bf;
  --sky-400: #5aa9ff;
  --flame-400: #ff8a4c;
  --flame-300: #ffb27a;
  --line: rgba(255, 255, 255, 0.08);
  --radius: 14px;
  --shadow: 0 18px 50px -20px rgba(0, 0, 0, 0.6);
  --maxw: 1080px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  line-height: 1.65;
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(54, 201, 127, 0.10), transparent 60%),
    radial-gradient(900px 500px at 10% 0%, rgba(90, 169, 255, 0.10), transparent 55%),
    var(--space-900);
  background-attachment: fixed;
}

a { color: var(--leaf-400); text-decoration: none; }
a:hover { color: var(--leaf-300); text-decoration: underline; }

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

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---- Site header / nav ---------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(10, 14, 26, 0.78);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: linear-gradient(160deg, var(--leaf-500), var(--sky-400));
  font-size: 17px;
}
.brand small { display: block; font-weight: 400; font-size: 11px; color: var(--ink-faint); letter-spacing: 1.5px; text-transform: uppercase; }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  display: inline-block;
  padding: 8px 13px;
  border-radius: 9px;
  color: var(--ink-soft);
  font-size: 14.5px;
  font-weight: 500;
}
.nav-links a:hover { background: var(--space-700); color: var(--ink); text-decoration: none; }
.nav-links a.active { color: var(--leaf-300); background: rgba(54, 201, 127, 0.12); }

.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--line);
  color: var(--ink); border-radius: 9px;
  width: 42px; height: 38px; font-size: 18px; cursor: pointer;
}

/* ---- Hero ----------------------------------------------------------------- */
.hero {
  padding: 84px 0 64px;
  text-align: center;
  position: relative;
}
.eyebrow {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--leaf-300);
  border: 1px solid rgba(54, 201, 127, 0.35);
  background: rgba(54, 201, 127, 0.08);
  padding: 5px 13px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  margin: 0 auto 18px;
  max-width: 16ch;
  letter-spacing: -0.5px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--leaf-400), var(--sky-400));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0 auto 30px;
}

/* ---- Buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  border-radius: 11px;
  font-weight: 600; font-size: 15px;
  cursor: pointer; border: 1px solid transparent;
  transition: transform 0.08s ease, box-shadow 0.2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: linear-gradient(120deg, var(--leaf-500), var(--leaf-400)); color: #04140c; box-shadow: 0 12px 30px -12px rgba(54, 201, 127, 0.7); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { background: var(--space-700); color: var(--ink); }
.btn-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---- Sections & generic content ------------------------------------------ */
section { padding: 44px 0; }
.section-title { font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 8px; letter-spacing: -0.3px; }
.section-sub { color: var(--ink-soft); margin: 0 0 30px; max-width: 65ch; }

.lead-page-head { padding: 64px 0 8px; }
.lead-page-head h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin: 0 0 12px; letter-spacing: -0.5px; }
.lead-page-head p { color: var(--ink-soft); font-size: 1.12rem; max-width: 62ch; margin: 0; }

/* ---- Cards ---------------------------------------------------------------- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: linear-gradient(180deg, var(--space-800), var(--space-700));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 8px; font-size: 1.2rem; }
.card p { margin: 0; color: var(--ink-soft); }
.card .ico { font-size: 26px; margin-bottom: 12px; display: block; }
a.card { color: inherit; }
a.card:hover { border-color: rgba(54, 201, 127, 0.45); text-decoration: none; transform: translateY(-2px); transition: transform 0.1s ease, border-color 0.2s ease; }

/* ---- Steps (build guide) -------------------------------------------------- */
.steps { counter-reset: step; display: grid; gap: 18px; }
.step {
  position: relative;
  background: linear-gradient(180deg, var(--space-800), var(--space-700));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 24px 24px 78px;
  box-shadow: var(--shadow);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 22px; top: 22px;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 11px;
  font-weight: 700; font-size: 18px;
  color: #04140c;
  background: linear-gradient(135deg, var(--leaf-500), var(--sky-400));
}
.step h3 { margin: 2px 0 8px; font-size: 1.22rem; }
.step p { margin: 0 0 10px; color: var(--ink-soft); }
.step ul { margin: 8px 0 0; padding-left: 18px; color: var(--ink-soft); }
.step ul li { margin-bottom: 5px; }

/* ---- Callouts / notes ----------------------------------------------------- */
.note {
  border-left: 3px solid var(--leaf-500);
  background: rgba(54, 201, 127, 0.07);
  padding: 12px 16px;
  border-radius: 8px;
  margin: 16px 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.note.warn { border-left-color: var(--flame-400); background: rgba(255, 138, 76, 0.08); }
.note.safety { border-left-color: var(--flame-400); background: rgba(255, 138, 76, 0.10); }
.note strong { color: var(--ink); }
.todo {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.5px;
  text-transform: uppercase; color: var(--flame-300);
  border: 1px dashed rgba(255, 138, 76, 0.5); border-radius: 6px;
  padding: 2px 7px; margin-left: 6px; vertical-align: middle;
}

/* ---- Pipeline / connector ------------------------------------------------- */
.pipeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; align-items: stretch; margin-top: 18px; }
.pipe-node {
  text-align: center; padding: 22px 14px; position: relative;
  background: var(--space-800); border: 1px solid var(--line);
}
.pipe-node:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.pipe-node:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.pipe-node .big { font-size: 28px; display: block; margin-bottom: 8px; }
.pipe-node h4 { margin: 0 0 4px; font-size: 1rem; }
.pipe-node p { margin: 0; font-size: 0.85rem; color: var(--ink-faint); }
.pipe-node:not(:last-child)::after {
  content: "→"; position: absolute; right: -11px; top: 50%; transform: translateY(-50%);
  z-index: 2; color: var(--leaf-400); font-size: 20px;
  background: var(--space-900); border-radius: 50%; width: 22px; height: 22px; display: grid; place-items: center;
}

/* ---- Tables --------------------------------------------------------------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 460px; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); font-size: 0.95rem; }
th { color: var(--leaf-300); font-weight: 600; background: var(--space-800); }
td { color: var(--ink-soft); }
tr:last-child td { border-bottom: none; }

/* ---- Stats band ----------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: center; }
.stat .num { font-size: 2.2rem; font-weight: 800; background: linear-gradient(120deg, var(--leaf-400), var(--sky-400)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .lbl { color: var(--ink-faint); font-size: 0.9rem; }

/* ---- CTA band ------------------------------------------------------------- */
.cta-band {
  text-align: center;
  background: linear-gradient(135deg, rgba(54, 201, 127, 0.14), rgba(90, 169, 255, 0.12));
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 48px 24px;
  margin: 24px 0;
}
.cta-band h2 { margin: 0 0 10px; font-size: clamp(1.5rem, 3vw, 2rem); }
.cta-band p { color: var(--ink-soft); max-width: 52ch; margin: 0 auto 22px; }

/* ---- Footer --------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 36px 0; color: var(--ink-faint); }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 28px; }
.foot-grid h4 { color: var(--ink); margin: 0 0 10px; font-size: 0.95rem; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; }
.foot-grid li { margin-bottom: 6px; }
.foot-grid a { color: var(--ink-soft); }
.foot-bottom { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 0.85rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---- Slideshow ------------------------------------------------------------ */
.slideshow {
  background: linear-gradient(180deg, var(--space-800), var(--space-700));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}
.ss-stage {
  position: relative;
  background: #05070d;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
}
.ss-stage img { width: 100%; height: 100%; object-fit: contain; display: block; }
.ss-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid var(--line); background: rgba(10, 14, 26, 0.7);
  color: var(--ink); font-size: 20px; cursor: pointer; z-index: 3;
  display: grid; place-items: center; backdrop-filter: blur(4px);
}
.ss-btn:hover { background: var(--space-600); }
.ss-prev { left: 10px; } .ss-next { right: 10px; }
.ss-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 12px; }
.ss-count { font-size: 13px; color: var(--ink-faint); font-variant-numeric: tabular-nums; white-space: nowrap; }
.ss-caption { color: var(--ink-soft); font-size: 0.95rem; flex: 1; }
.ss-dots { display: flex; gap: 6px; flex-wrap: wrap; }
.ss-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--space-600); border: none; cursor: pointer; padding: 0; }
.ss-dot.active { background: var(--leaf-400); }
.ss-thumbs { display: flex; gap: 6px; overflow-x: auto; margin-top: 10px; padding-bottom: 4px; }
.ss-thumbs img { height: 46px; width: auto; border-radius: 5px; opacity: 0.5; cursor: pointer; border: 1px solid transparent; }
.ss-thumbs img.active { opacity: 1; border-color: var(--leaf-400); }

/* ---- Responsive ----------------------------------------------------------- */
@media (max-width: 860px) {
  .grid-3, .grid-2, .stats, .foot-grid { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: 1fr 1fr; }
  .pipe-node:nth-child(2)::after, .pipe-node:nth-child(2n)::after { display: none; }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: rgba(10, 14, 26, 0.97);
    border-bottom: 1px solid var(--line);
    padding: 10px 16px 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
}