/* Terminal Space Program — "mission console" theme.
   Dark instrument panel. Semantic palette (each colour means something, the way
   the game uses colour). Display in Space Grotesk, every readout in JetBrains
   Mono. The signature is the braille-plotted orbit; everything else stays quiet. */

/* ---- self-hosted type (latin subset, ~82KB total) ---- */
@font-face { font-family: 'Space Grotesk'; font-style: normal; font-weight: 400; font-display: swap; src: url(../assets/fonts/SpaceGrotesk-400.woff2) format('woff2'); }
@font-face { font-family: 'Space Grotesk'; font-style: normal; font-weight: 500; font-display: swap; src: url(../assets/fonts/SpaceGrotesk-500.woff2) format('woff2'); }
@font-face { font-family: 'Space Grotesk'; font-style: normal; font-weight: 700; font-display: swap; src: url(../assets/fonts/SpaceGrotesk-700.woff2) format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url(../assets/fonts/JetBrainsMono-400.woff2) format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 700; font-display: swap; src: url(../assets/fonts/JetBrainsMono-700.woff2) format('woff2'); }

:root {
  --void: #070b12;          /* deep space background */
  --void-2: #090f18;        /* alternate band */
  --panel: #0d131c;         /* card / panel surface */
  --panel-2: #111a26;       /* raised surface (inputs, chips) */
  --line: #1b2735;          /* hairline border */
  --line-bright: #2a3a4d;   /* brighter border / hover */

  --cyan: #5fd7ff;          /* structure · info · primary · apoapsis */
  --amber: #ffaf00;         /* key numbers · highlight · periapsis */
  --green: #3ddc84;         /* go · install · success */
  --violet: #d75fff;        /* calculators · secondary */
  --red: #ff5f5f;           /* alert (used sparingly) */
  --craft: #ffd93d;         /* the craft marker */

  --ink: #e7eef6;           /* primary text */
  --ink-dim: #93a3b5;       /* secondary text */
  --ink-faint: #5a6a7c;     /* tertiary / captions */

  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --display: 'Space Grotesk', system-ui, -apple-system, Segoe UI, sans-serif;
  --wrap: 1140px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1100px 520px at 88% -8%, rgba(95, 215, 255, 0.10), transparent 62%),
    radial-gradient(900px 480px at 6% 12%, rgba(215, 95, 255, 0.05), transparent 60%),
    var(--void);
  color: var(--ink);
  font-family: var(--display);
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: #9be8ff; }
code, kbd { font-family: var(--mono); font-size: 0.9em; }
strong { color: var(--ink); font-weight: 700; }
em { font-style: normal; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 3px; }

/* ---- layout primitives ---- */
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: clamp(1.2rem, 4vw, 2.2rem); }
.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section-alt { background: var(--void-2); border-block: 1px solid var(--line); }

.kicker {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--ink-faint);
}
.section-head { margin: 0 0 2rem; }
.section-head h2 {
  font-family: var(--display); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(1.6rem, 3.6vw, 2.3rem); margin: 0.4rem 0 0; color: var(--ink);
}
.section-head .kicker::before { content: '// '; color: var(--cyan); }

/* braille divider between bands */
.braille-rule {
  font-family: var(--mono); color: var(--cyan); opacity: 0.28;
  text-align: center; letter-spacing: 0.1em; user-select: none;
  font-size: 0.8rem; padding-block: 0.4rem; overflow: hidden; white-space: nowrap;
}

/* ---- status-line header ---- */
.statusline {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  font-family: var(--mono); font-size: 0.78rem;
  padding: 0.55rem clamp(1.2rem, 4vw, 2.2rem);
  background: rgba(7, 11, 18, 0.86); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.statusline .brand { color: var(--ink); letter-spacing: 0.04em; font-weight: 700; }
.statusline .brand b { color: var(--cyan); font-weight: 700; }
.statusline .lamp { color: var(--green); }
.statusline nav { display: flex; gap: clamp(0.7rem, 2.4vw, 1.5rem); flex-wrap: wrap; align-items: center; }
.statusline nav a { color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.72rem; }
.statusline nav a:hover, .statusline nav a[aria-current="page"] { color: var(--cyan); }
.cursor { color: var(--cyan); animation: blink 1.1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.bmc-wrap { display: inline-flex; align-items: center; line-height: 0; }
.bmc-wrap a { margin: 0 !important; }
.bmc-wrap img { box-shadow: none !important; }

/* ---- hero ---- */
.hero { padding-block: clamp(2.6rem, 6vw, 4.6rem); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(1.6rem, 4vw, 3.2rem); align-items: center; }
.hero-copy { animation: rise 0.6s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
.hero .prompt { font-family: var(--mono); color: var(--cyan); font-size: 0.92rem; margin: 0 0 0.9rem; }
.hero .prompt::before { content: '> '; color: var(--ink-faint); }
.hero h1 {
  font-family: var(--display); font-weight: 700; letter-spacing: -0.03em; line-height: 1.04;
  font-size: clamp(2.4rem, 6.2vw, 4.1rem); margin: 0 0 1.1rem; color: #fff;
}
.hero h1 .accent { color: var(--cyan); }
.hero .lede { font-size: 1.1rem; color: var(--ink-dim); max-width: 34rem; margin: 0 0 1.8rem; }
.hero .lede strong { color: var(--ink); }

.cta { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-bottom: 1.8rem; }
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--mono); font-size: 0.82rem; font-weight: 700; letter-spacing: 0.04em;
  padding: 0.62rem 1.05rem; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--line-bright); background: var(--panel-2); color: var(--ink);
  transition: transform 0.06s ease, border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); border-color: var(--cyan); color: #fff; box-shadow: 0 0 0 1px rgba(95, 215, 255, 0.25), 0 8px 24px rgba(0, 0, 0, 0.4); }
.btn-go { background: rgba(61, 220, 132, 0.12); border-color: rgba(61, 220, 132, 0.5); color: #9af0c0; }
.btn-go:hover { border-color: var(--green); color: #c9ffe2; box-shadow: 0 0 0 1px rgba(61, 220, 132, 0.3), 0 8px 24px rgba(0, 0, 0, 0.4); }
.btn-calc { border-color: rgba(215, 95, 255, 0.45); color: #e7b6ff; }
.btn-calc:hover { border-color: var(--violet); color: #f3d6ff; box-shadow: 0 0 0 1px rgba(215, 95, 255, 0.3), 0 8px 24px rgba(0, 0, 0, 0.4); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink-dim); }

.hero-points { list-style: none; margin: 0; padding: 0; font-family: var(--mono); font-size: 0.84rem; color: var(--ink-dim); display: grid; gap: 0.34rem; }
.hero-points li { padding-left: 1.4rem; position: relative; }
.hero-points li::before { content: '▸'; position: absolute; left: 0; color: var(--cyan); }

/* ---- orbit panel (the signature) ---- */
.orbit-panel {
  position: relative; background: linear-gradient(180deg, #0a1019, #070d14);
  border: 1px solid var(--line-bright); border-radius: 12px;
  padding: 1.1rem 1.1rem 0.9rem; box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.5), 0 20px 60px rgba(0, 0, 0, 0.45);
}
.orbit-panel::before, .orbit-panel::after {
  content: ''; position: absolute; width: 14px; height: 14px; pointer-events: none;
  border: 1px solid var(--cyan); opacity: 0.55;
}
.orbit-panel::before { top: 7px; left: 7px; border-right: 0; border-bottom: 0; }
.orbit-panel::after { bottom: 7px; right: 7px; border-left: 0; border-top: 0; }
.orbit-head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 0.5rem;
}
.orbit-head .dot { color: var(--green); }
.orbit-canvas {
  margin: 0; font-family: var(--mono); line-height: 1.0; white-space: pre;
  font-size: clamp(6px, 1.45vw, 11px); text-align: center;
  color: rgba(120, 205, 235, 0.5); text-shadow: 0 0 7px rgba(95, 215, 255, 0.22);
  overflow: hidden;
}
.orbit-canvas .orbit-body { color: #bfe6ff; text-shadow: 0 0 8px rgba(95, 215, 255, 0.6); }
.orbit-canvas .orbit-craft { color: var(--craft); text-shadow: 0 0 9px rgba(255, 217, 61, 0.7); }
.orbit-canvas .orbit-apo { color: var(--cyan); }
.orbit-canvas .orbit-peri { color: var(--amber); }
.orbit-legend {
  display: flex; flex-wrap: wrap; gap: 0.9rem; justify-content: center;
  font-family: var(--mono); font-size: 0.68rem; color: var(--ink-faint); margin-top: 0.5rem;
}
.orbit-legend b { font-weight: 400; }
.orbit-legend .l-apo { color: var(--cyan); } .orbit-legend .l-peri { color: var(--amber); }
.orbit-legend .l-body { color: #bfe6ff; } .orbit-legend .l-craft { color: var(--craft); }

/* ---- readout strip (stats) ---- */
.readout { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.readout .cell { background: var(--panel); padding: 1.1rem 1.2rem; }
.readout .num { font-family: var(--display); font-weight: 700; font-size: 1.7rem; line-height: 1; color: var(--amber); letter-spacing: -0.02em; }
.readout .num small { font-size: 0.95rem; color: var(--ink-dim); font-weight: 500; }
.readout .lbl { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-top: 0.45rem; }
.pitch-lead { font-size: 1.15rem; color: var(--ink-dim); max-width: 50rem; margin: 0 0 2rem; }
.pitch-lead strong { color: var(--ink); }

/* ---- feature cards (instruments) ---- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); gap: 1rem; }
.feature {
  --accent: var(--cyan);
  position: relative; background: var(--panel); border: 1px solid var(--line);
  border-top: 2px solid var(--accent); border-radius: 0 0 10px 10px;
  padding: 1.25rem 1.3rem; transition: transform 0.1s ease, border-color 0.15s ease, background 0.15s ease;
}
.feature:hover { transform: translateY(-3px); background: var(--panel-2); border-color: var(--line-bright); border-top-color: var(--accent); }
.feature .glyph { font-family: var(--mono); font-size: 1.2rem; color: var(--accent); line-height: 1; }
.feature h3 { font-family: var(--display); font-weight: 700; font-size: 1.08rem; margin: 0.6rem 0 0.4rem; color: var(--ink); letter-spacing: -0.01em; }
.feature p { margin: 0; color: var(--ink-dim); font-size: 0.93rem; line-height: 1.6; }
.feature p code { color: var(--accent); }
.feature--cyan { --accent: var(--cyan); }
.feature--amber { --accent: var(--amber); }
.feature--green { --accent: var(--green); }
.feature--violet { --accent: var(--violet); }
.feature--red { --accent: var(--red); }

/* ---- install ---- */
.install-grid { display: grid; gap: 1.1rem; }
.install-block { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 1.05rem 1.15rem; }
.install-block .head { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.7rem; flex-wrap: wrap; }
.install-block h3 { font-family: var(--mono); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); margin: 0; }
.tag { font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.12rem 0.45rem; border-radius: 4px; border: 1px solid var(--line-bright); color: var(--ink-faint); }
.tag-go { color: #9af0c0; border-color: rgba(61, 220, 132, 0.5); background: rgba(61, 220, 132, 0.08); }
.install-block .note { color: var(--ink-dim); font-size: 0.9rem; margin: 0 0 0.7rem; }
.install-block .note a { color: var(--cyan); }
.cmd {
  position: relative; margin: 0; padding: 0.85rem 3.4rem 0.85rem 1rem;
  background: #060a10; border: 1px solid var(--line); border-radius: 8px;
  font-family: var(--mono); font-size: 0.82rem; line-height: 1.6; color: #cfe0ef;
  overflow-x: auto; white-space: pre;
}
.cmd code { color: inherit; font-size: inherit; white-space: pre; }
.cmd .p { color: var(--green); user-select: none; }
.copy {
  position: absolute; top: 0.5rem; right: 0.5rem;
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.06em; cursor: pointer;
  color: var(--cyan); background: var(--panel-2); border: 1px solid var(--line-bright);
  border-radius: 5px; padding: 0.22rem 0.5rem; transition: all 0.12s ease;
}
.copy:hover { border-color: var(--cyan); }
.copy.copied { color: #062; background: var(--green); border-color: var(--green); }
.install-tip { margin-top: 1.5rem; padding: 1rem 1.2rem; background: rgba(95, 215, 255, 0.06); border: 1px solid rgba(95, 215, 255, 0.2); border-radius: 9px; color: var(--ink-dim); font-size: 0.93rem; }
.install-tip code, .install-tip kbd { color: var(--cyan); font-weight: 700; }

/* ---- calculators teaser (index) ---- */
.calc-teaser { display: grid; grid-template-columns: auto 1fr; gap: 1.6rem; align-items: center; background: var(--panel); border: 1px solid var(--line); border-left: 2px solid var(--violet); border-radius: 0 10px 10px 0; padding: 1.5rem 1.6rem; }
.calc-teaser .mini { font-family: var(--mono); font-size: 0.8rem; line-height: 1.1; color: rgba(215, 95, 255, 0.55); white-space: pre; }
.calc-teaser h3 { font-family: var(--display); font-weight: 700; font-size: 1.3rem; margin: 0 0 0.4rem; color: var(--ink); }
.calc-teaser p { margin: 0 0 1rem; color: var(--ink-dim); font-size: 0.95rem; }
.tool-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.1rem; }
.tool-chips span { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.04em; color: var(--ink-dim); border: 1px solid var(--line-bright); border-radius: 20px; padding: 0.22rem 0.7rem; }

/* ============================================================
   CALCULATORS PAGE
   ============================================================ */
.calc-intro h1 { font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; font-size: clamp(1.9rem, 4.6vw, 2.8rem); margin: 0.5rem 0 0.8rem; color: #fff; }
.calc-intro p { color: var(--ink-dim); max-width: 52rem; }
.calc-intro .note { border-left: 2px solid var(--amber); padding-left: 1rem; font-size: 0.95rem; }
.calc-list { display: flex; flex-direction: column; gap: 1.4rem; }

.calc {
  --accent: var(--cyan);
  background: var(--panel); border: 1px solid var(--line); border-top: 2px solid var(--accent);
  border-radius: 0 0 12px 12px; padding: 1.4rem clamp(1.1rem, 3vw, 1.7rem);
}
.calc--phasing { --accent: var(--amber); }
.calc--basics { --accent: var(--cyan); }
.calc--coverage { --accent: var(--green); }
.calc--commnet { --accent: var(--violet); }
.calc-head h2 { font-family: var(--display); font-weight: 700; font-size: 1.3rem; margin: 0 0 0.35rem; color: var(--ink); }
.calc-head h2 .n { color: var(--accent); font-family: var(--mono); font-size: 1rem; margin-right: 0.4rem; }
.calc-head p { margin: 0 0 1.1rem; color: var(--ink-dim); font-size: 0.93rem; max-width: 60rem; }
.calc-head em { color: var(--accent); font-weight: 600; }
.calc-body { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 1.3rem; align-items: start; }
.calc-inputs { display: grid; gap: 0.75rem; align-content: start; }
.calc-inputs label { display: grid; gap: 0.3rem; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-faint); }
.calc-inputs input, .calc-inputs select {
  font-family: var(--mono); font-size: 0.92rem; padding: 0.5rem 0.6rem;
  border: 1px solid var(--line-bright); border-radius: 7px; background: var(--panel-2); color: var(--ink);
}
.calc-inputs input:focus, .calc-inputs select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(95, 215, 255, 0.15); }
.calc-inputs select { appearance: none; }

.calc-output { font-family: var(--mono); font-size: 0.88rem; background: #060a10; border: 1px solid var(--line); border-radius: 9px; padding: 0.95rem 1.05rem; }
.out-row { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; }
.out-label { color: var(--ink-dim); }
.out-val { color: var(--cyan); font-weight: 700; text-align: right; }
.out-val strong { color: var(--amber); }
.out-sub { color: var(--ink-faint); font-size: 0.74rem; margin: 0.05rem 0 0.5rem; }
.out-hr { border: none; border-top: 1px dashed var(--line-bright); margin: 0.55rem 0; }
.out-warn { color: var(--red); font-weight: 700; }
.calc-foot { font-size: 0.8rem; color: var(--ink-faint); margin: 1rem 0 0; }
.calc-foot code { color: var(--amber); }

.ref-table { width: 100%; border-collapse: collapse; margin-top: 1.2rem; font-size: 0.84rem; }
.ref-table caption { text-align: left; color: var(--ink-faint); font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 0.5rem; }
.ref-table th, .ref-table td { text-align: left; padding: 0.4rem 0.7rem; border-bottom: 1px solid var(--line); color: var(--ink-dim); }
.ref-table th { color: var(--ink-faint); font-family: var(--mono); font-weight: 400; text-transform: uppercase; font-size: 0.72rem; letter-spacing: 0.06em; }
.ref-table td:first-child { font-family: var(--mono); color: var(--ink); }

/* ---- footer ---- */
.site-footer { border-top: 1px solid var(--line); background: var(--void); padding-block: 2.2rem; }
.site-footer .links { display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; font-family: var(--mono); font-size: 0.78rem; }
.site-footer .links a { color: var(--ink-dim); }
.site-footer .links a:hover { color: var(--cyan); }
.site-footer .fine { color: var(--ink-faint); font-size: 0.8rem; margin-top: 0.8rem; max-width: 50rem; }
.site-footer .fine a { color: var(--ink-dim); }

/* ---- responsive ---- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .orbit-panel { order: -1; }
  .calc-body { grid-template-columns: 1fr; }
  .calc-teaser { grid-template-columns: 1fr; }
  .calc-teaser .mini { display: none; }
}

/* ---- motion / a11y floor ---- */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; transition: none !important; }
  .cursor { opacity: 1; }
}