/* Horizon Planner — warm "Field Notebook" light theme + a first-class dark
   "Night Mode" for use at the eyepiece. Fully variable-driven so the theme is a
   token swap on [data-theme="dark"]. Mirrors the sibling apps' conventions:
   :root tokens (never hex-in-place), IBM Plex with mono for every number. */
:root {
  --bg: #ebe1cf; --bg2: #f2ead9; --card: #faf4e8; --card2: #f2ead9;
  --ink: #2c2318; --dim: #8a7b64; --line: #e2d6bf; --track: #e6dcc7;
  --accent: #b07bd6; --accent-ink: #5a3580; --accent-wash: #efe4f6; --accent2: #7b57c4;
  --slate: #3f77a4; --slate-wash: #dbe7f0; --warn: #a9781f; --live: #c0563a;
  --danger: #9c3320; --danger-dim: #7a2e2e;
  /* Tab dock — its own neutral surface with light glyphs, so it can't be
     mistaken for the cards or the page in either theme. */
  --dock: #6a5f7e;
  --dock-line: #4c4360;
  --dock-shadow: 0 1px 2px rgba(30,20,40,.22), 0 8px 18px rgba(30,20,40,.18), 0 22px 44px rgba(30,20,40,.24);
  --dock-lip: inset 0 1px 0 rgba(255,255,255,.16);
  --tab-ink: #efe6f4;
  --tab-ink-active: #d9b8f5;
  /* Type superfamily — IBM Plex (serif = wordmark/titles, sans = chrome,
     mono = every number). */
  --sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --serif: 'IBM Plex Serif', Georgia, "Times New Roman", serif;
  --mono: 'IBM Plex Mono', ui-monospace, "SFMono-Regular", Menlo, monospace;
  --r: 16px; --tab-h: 60px;
  --col-edge: max(10px, (100% - 760px) / 2 + 12px);
}

/* Night Mode — a deep, low-glare palette for the field (never green). */
[data-theme="dark"] {
  --bg: #12131c; --bg2: #1c1e2c; --card: #191b28; --card2: #23263a;
  --ink: #e9ecf7; --dim: #9aa0bd; --line: #2a2d40; --track: #23263a;
  --accent: #c39be8; --accent-ink: #e6d4f6; --accent-wash: #2a2140; --accent2: #b48ce0;
  --slate: #7fb0da; --slate-wash: #1e2c38; --warn: #e0a94e; --live: #e8795a;
  --danger: #e58b8b; --danger-dim: #7a2e2e;
  --dock: #35304a;
  --dock-line: #4a4468;
  --dock-shadow: 0 1px 2px rgba(0,0,0,.45), 0 8px 20px rgba(0,0,0,.5), 0 22px 46px rgba(0,0,0,.55);
  --dock-lip: inset 0 1px 0 rgba(255,255,255,.08);
  --tab-ink: #d7d2e8;
  --tab-ink-active: #c39be8;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 15px; line-height: 1.45; }
/* Clear the floating dock: its height + 10px float + a little breathing room. */
body { padding-bottom: calc(var(--tab-h) + 24px + env(safe-area-inset-bottom)); }
.view { max-width: 760px; margin: 0 auto; padding: 12px 12px 24px; }

h1 { font-size: 22px; margin: 0; font-family: var(--serif); font-weight: 600; }
h2 { font-size: 16px; margin: 0 0 6px; }
h3 { font-size: 14px; margin: 14px 0 4px; }
a { color: var(--accent); }
.dim { color: var(--dim); }
.small { font-size: 12px; }
.empty { color: var(--dim); text-align: center; padding: 40px 0; }

/* Numbers are IBM Plex Mono, tabular — wherever they land later. */
.mono, .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* Placeholder / scaffold views — honest "coming soon" rather than a blank. */
.placeholder { background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r); padding: 22px 18px; margin: 10px 0; }
.placeholder h1 { margin-bottom: 8px; }
.placeholder p { margin: 0 0 12px; max-width: 52ch; }
.scaffold-note { display: inline-block; font-family: var(--mono); font-size: 12px;
  color: var(--accent-ink); background: var(--accent-wash);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 999px; padding: 4px 12px; }

/* buttons */
.btn { background: var(--card2); border: 1px solid var(--line); color: var(--ink);
  border-radius: 8px; padding: 7px 12px; font-size: 13px; cursor: pointer;
  text-decoration: none; display: inline-block; }
.btn.ghost { background: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #12131c; font-weight: 700; }
.btn:active { transform: translateY(1px); }

/* toast (undo notices etc.) */
.toast { position: fixed; left: 50%; bottom: calc(var(--tab-h) + env(safe-area-inset-bottom) + 26px);
  transform: translate(-50%, 8px); max-width: 88vw; padding: 10px 16px; z-index: 20;
  background: var(--card2); color: var(--ink); border: 1px solid var(--accent2); border-radius: 999px;
  font-size: 13px; box-shadow: 0 8px 26px rgba(0, 0, 0, .45); opacity: 0; transition: opacity .25s, transform .25s;
  pointer-events: none; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.has-action { display: inline-flex; align-items: center; gap: 12px; padding: 8px 8px 8px 16px; pointer-events: auto; }
.toast-action { flex: 0 0 auto; background: var(--accent); color: #12131c; border: 0; border-radius: 999px;
  padding: 6px 14px; font-size: 13px; font-weight: 700; cursor: pointer; }
.toast-action:active { transform: translateY(1px); }

/* tab bar — a floating dock in the same card language as the content. */
.tabs { position: fixed; bottom: calc(10px + env(safe-area-inset-bottom)); left: 0; right: 0;
  margin-inline: auto; width: min(736px, calc(100% - 24px)); height: var(--tab-h);
  background: color-mix(in srgb, var(--dock) 97%, transparent);
  -webkit-backdrop-filter: blur(12px) saturate(1.04); backdrop-filter: blur(12px) saturate(1.04);
  border: 1px solid var(--dock-line); border-radius: var(--r); overflow: hidden;
  box-shadow: var(--dock-shadow), var(--dock-lip);
  display: grid; grid-template-columns: repeat(5, 1fr); z-index: 10; }
.tab { background: none; border: 0; color: var(--tab-ink); display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 2px; cursor: pointer; font-size: 11px; }
.tab.active { color: var(--tab-ink-active); }
.tab-icon { display: flex; align-items: center; justify-content: center; line-height: 0; }

/* Floating corner buttons hug the content column on wide screens, fall back to
   the screen corner on narrow ones. */
.about-btn { position: fixed; top: calc(8px + env(safe-area-inset-top)); right: var(--col-edge); z-index: 8;
  width: 30px; height: 30px; padding: 0; border-radius: 50%; border: 1px solid var(--line);
  background: var(--card2); color: var(--dim); font-size: 15px; line-height: 1; cursor: pointer;
  display: grid; place-content: center; opacity: .55; transition: opacity .15s, color .15s, border-color .15s; }
.about-btn:hover, .about-btn:focus-visible { opacity: 1; color: var(--accent); border-color: var(--accent); outline: none; }
.about-btn:active { transform: translateY(1px); }

/* Night Mode toggle — floating moon/sun, just left of the About button. */
.theme-btn { position: fixed; top: calc(8px + env(safe-area-inset-top)); right: calc(var(--col-edge) + 38px); z-index: 8;
  width: 30px; height: 30px; padding: 0; border-radius: 50%; border: 1px solid var(--line);
  background: var(--card2); color: var(--dim); cursor: pointer;
  display: grid; place-content: center; opacity: .55; transition: opacity .15s, color .15s, border-color .15s; }
.theme-btn:hover, .theme-btn:focus-visible { opacity: 1; color: var(--accent); border-color: var(--accent); outline: none; }
.theme-btn:active { transform: translateY(1px); }
.theme-btn svg { display: block; }

/* about modal */
.about-dialog { position: fixed; inset: 0; margin: auto; width: min(92vw, 560px); max-height: 84vh;
  padding: 0; overflow: hidden; background: var(--card); color: var(--ink);
  border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.about-dialog::backdrop { background: rgba(10,8,16,.55); -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px); }
.about-body { padding: 22px 22px 8px; overflow-y: auto; max-height: calc(84vh - 64px); }
.about-body h2 { font-family: var(--serif); font-size: 19px; }
.about-body p { max-width: 52ch; color: var(--ink); }
.about-scaffold { font-family: var(--mono); font-size: 12px; color: var(--dim); }
.about-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 22px 16px;
  border-top: 1px solid var(--line); }

/* ── Targets view ────────────────────────────────────────────────────────── */
.filters { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.filters-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.inst-tag { font-family: var(--mono); font-size: 11px; color: var(--accent-ink);
  background: var(--accent-wash); border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
  border-radius: 999px; padding: 3px 10px; }
.search { width: 100%; background: var(--bg2); border: 1px solid var(--line); color: var(--ink);
  border-radius: 10px; padding: 10px 12px; font-size: 15px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { background: var(--card2); border: 1px solid var(--line); color: var(--dim);
  border-radius: 999px; padding: 5px 12px; font-size: 13px; cursor: pointer; }
.chip.active { background: var(--accent); border-color: var(--accent); color: #12131c; font-weight: 600; }
.filters-row { display: flex; flex-wrap: wrap; align-items: end; gap: 12px; }
.filters-labelrow { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.fl { font-size: 12px; color: var(--dim); min-width: 56px; }
.fld { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--dim); }
.sel { background: var(--bg2); border: 1px solid var(--line); color: var(--ink);
  border-radius: 8px; padding: 6px 8px; font-size: 14px; font-family: var(--mono); }
.count { font-family: var(--mono); font-size: 12px; color: var(--dim); margin: 2px 0 6px; }

.target-list { display: flex; flex-direction: column; gap: 6px; }
.target-row { display: flex; align-items: center; gap: 10px; padding: 9px 12px;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.fav { flex: 0 0 auto; width: 30px; height: 30px; border: 0; background: none; cursor: pointer;
  color: var(--dim); font-size: 18px; line-height: 1; border-radius: 8px; }
.fav.on { color: var(--accent); }
.target-main { flex: 1 1 auto; min-width: 0; }
.target-name { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.mbadge { font-family: var(--mono); font-size: 11px; font-weight: 700; color: #12131c;
  background: var(--accent); border-radius: 6px; padding: 1px 6px; }
.tname { font-weight: 600; }
.tsub { font-family: var(--mono); font-size: 11px; color: var(--dim); }
.target-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 2px; font-size: 12px; color: var(--dim); }
.target-meta .tnum { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tier { flex: 0 0 auto; font-family: var(--mono); font-size: 12px; font-weight: 600;
  border-radius: 999px; padding: 3px 10px; }
.tier.fits { color: var(--park, #5fae79); background: color-mix(in srgb, #5fae79 16%, var(--card));
  border: 1px solid color-mix(in srgb, #5fae79 34%, transparent); }
.tier.mosaic { color: var(--accent-ink); background: var(--accent-wash);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); }

/* ── Settings view ───────────────────────────────────────────────────────── */
.settings-block { margin: 14px 0 20px; }
.settings-block h2 { font-family: var(--serif); }
.inst-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; margin-top: 8px; }
.inst-card { text-align: left; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 14px; cursor: pointer; color: var(--ink); }
.inst-card.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.inst-card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.inst-name { font-weight: 600; font-size: 15px; }
.inst-active { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: .05em;
  color: #12131c; background: var(--accent); border-radius: 999px; padding: 2px 8px; }
.inst-specs { display: flex; flex-direction: column; gap: 3px; }
.spec { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; }
.spec-k { color: var(--dim); }
.spec-v { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.toggle-row { display: flex; align-items: center; gap: 10px; font-size: 15px; }
.toggle-row input { width: 20px; height: 20px; accent-color: var(--accent); }
.settings-foot { color: var(--dim); font-size: 12px; margin-top: 10px; }