/* Shared look for the visual roadmap views (skill-tree.html, mind-map.html).
   Same tokens as the list pages: "scs0x00 Night" (default) and "Ishtar Shield". */
:root, [data-theme="night"] {
  --bg: #07080B; --panel: #0D0F14; --panel-2: #12151C; --bar: rgba(7, 8, 11, 0.92);
  --bd: rgba(255, 255, 255, 0.08); --bd-2: rgba(255, 255, 255, 0.14);
  --text: #E9ECF2; --soft: #B3BBC9; --meta: #858E9F;
  --gold: #FFB13B; --on-gold: #07080B; --teal: #35F0E0; --hover: rgba(53, 240, 224, 0.08);
  --scrim: rgba(3, 4, 6, 0.78); --edge: rgba(255, 255, 255, 0.16);
  --sh-1: 0 1px 2px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  --sh-2: 0 2px 6px rgba(0, 0, 0, 0.45), 0 12px 30px -18px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  --texture: radial-gradient(90% 40% at 50% 0%, rgba(27, 59, 232, 0.18), transparent 70%);
  --f-gen: #FFB13B; --f-off: #FF5C7A; --f-def: #4C7BFF; --f-app: #9B7BFF; --f-cld: #35F0E0;
  --f-idc: #4FE3A5; --f-grc: #FFB13B; --f-fir: #FF8A4C; --f-ot: #A8E05F; --f-emg: #FF6BC1;
  color-scheme: dark;
}
[data-theme="ishtar"] {
  --bg: #f8f4ec; --panel: #fffdf7; --panel-2: #f3ecdf; --bar: rgba(248, 244, 236, 0.93);
  --bd: #e6dcc8; --bd-2: #dccfb5;
  --text: #14100c; --soft: #5b5245; --meta: #857c68;
  --gold: #8a6a1f; --on-gold: #fffdf7; --teal: #25776d; --hover: rgba(176, 141, 87, 0.1);
  --scrim: rgba(38, 30, 18, 0.5); --edge: rgba(90, 70, 30, 0.2);
  --sh-1: 0 1px 2px rgba(58, 46, 32, 0.06);
  --sh-2: 0 2px 4px rgba(58, 46, 32, 0.05), 0 10px 28px -14px rgba(58, 46, 32, 0.16);
  --texture: radial-gradient(90% 40% at 50% 0%, rgba(176, 141, 87, 0.16), transparent 70%);
  --f-gen: #8a6a1f; --f-off: #a83c3c; --f-def: #2c6b8c; --f-app: #68519f; --f-cld: #25776d;
  --f-idc: #4a7a35; --f-grc: #96701f; --f-fir: #a95f26; --f-ot: #5f7530; --f-emg: #95436b;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }
body {
  margin: 0; background: var(--bg); background-image: var(--texture); background-repeat: no-repeat;
  color: var(--text); font: 15px/1.55 'Space Grotesk', system-ui, sans-serif; min-height: 100vh;
}
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }
.kicker { font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 0.32em; text-transform: uppercase; color: var(--gold); }
.wrap { max-width: 1400px; margin: 0 auto; padding: 0 32px; }

/* top bar */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 0; }
.brand { font-family: 'JetBrains Mono', monospace; font-size: 14px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--gold); text-decoration: none; }
.themes { display: flex; align-items: center; gap: 10px; }
.themes .name { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--meta); }
.swatch { width: 24px; height: 24px; border-radius: 50%; border: 0; padding: 0; cursor: pointer; box-shadow: 0 0 0 2px transparent; }
.swatch[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--gold); }

/* view switcher — same groups as the list pages */
.views { display: flex; flex-wrap: wrap; gap: 10px; }
.views .grp { display: inline-flex; align-items: center; gap: 4px; padding: 4px; border-radius: 8px; border: 1px solid var(--bd-2); background: var(--panel); }
.views .vlab { padding: 0 8px; font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--meta); }
.views a { padding: 8px 12px; border-radius: 5px; font-size: 13px; font-weight: 500; text-decoration: none; color: var(--text); }
.views a:hover { background: var(--hover); }
.views a { white-space: nowrap; }
.vl-short { display: none; }
@media (max-width: 440px) { .vl-long { display: none; } .vl-short { display: inline; } }
.views a[aria-current="page"] { background: var(--gold); color: var(--on-gold); font-weight: 700; }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: end; padding: 18px 0 8px; }
.hero h1 { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; font-size: clamp(38px, 5vw, 64px); line-height: 1.02; letter-spacing: -0.01em; margin: 14px 0 0; }
.hero p { font-size: 17px; line-height: 1.65; color: var(--soft); max-width: 760px; margin: 14px 0 0; text-wrap: pretty; }
.hero p strong { color: var(--gold); font-weight: 600; }
.hero-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; }

/* toolbar */
.toolbar { position: sticky; top: 0; z-index: 40; margin-top: 26px; background: var(--bar); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-top: 1px solid var(--bd); border-bottom: 1px solid var(--bd); }
.toolbar .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding-top: 10px; padding-bottom: 10px; }
.input { flex: 1 1 220px; min-width: 0; height: 40px; padding: 0 13px; font: 13px 'JetBrains Mono', monospace; border-radius: 6px; border: 1px solid var(--bd-2); background: var(--panel-2); color: var(--text); outline: none; }
.input:focus { border-color: var(--gold); }
.btn { height: 40px; padding: 0 14px; border-radius: 6px; border: 1px solid var(--bd-2); background: transparent; font: 12px 'JetBrains Mono', monospace; color: var(--soft); cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--gold); color: var(--text); }
.btn[aria-pressed="true"] { background: var(--gold); border-color: var(--gold); color: var(--on-gold); }
.btn.primary { background: var(--gold); border-color: var(--gold); color: var(--on-gold); font-weight: 700; }
.chips { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; max-width: 100%; }
.chips::-webkit-scrollbar { display: none; }

/* drawer (desktop: right side; mobile: bottom sheet) */
.scrim { position: fixed; inset: 0; z-index: 90; background: var(--scrim); opacity: 0; pointer-events: none; transition: opacity 200ms ease; }
.scrim.on { opacity: 1; pointer-events: auto; }
.drawer { position: fixed; z-index: 100; top: 0; inset-inline-end: 0; bottom: 0; width: min(460px, 100vw); background: var(--panel); border-inline-start: 1px solid var(--bd-2); box-shadow: var(--sh-2); transform: translateX(105%); transition: transform 260ms cubic-bezier(0.2, 0.8, 0.2, 1); display: flex; flex-direction: column; }
.drawer.on { transform: none; }
[dir="rtl"] .drawer:not(.on) { transform: translateX(-105%); }
.drawer-head { position: relative; padding-inline-end: 60px !important; }
.drawer-head { flex: 0 0 auto; padding: 20px 22px 14px; border-bottom: 1px solid var(--bd); border-top: 3px solid var(--fc, var(--gold)); }
.drawer-body { flex: 1 1 auto; overflow-y: auto; padding: 6px 22px 28px; overscroll-behavior: contain; }
.drawer .grab { display: none; }
.drawer h2 { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; font-size: 30px; line-height: 1.1; margin: 6px 0 0; }
.close { position: absolute; top: 14px; inset-inline-end: 14px; width: 34px; height: 34px; border-radius: 6px; border: 1px solid var(--bd-2); background: var(--panel-2); cursor: pointer; font-size: 18px; line-height: 1; color: var(--soft); }
.sec { margin-top: 20px; }
.sec-t { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--meta); margin-bottom: 8px; }
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border-radius: 999px; font: 11px 'JetBrains Mono', monospace; letter-spacing: 0.06em; border: 1px solid var(--bd-2); color: var(--soft); background: transparent; }
.topic { display: inline-block; margin: 0 6px 6px 0; padding: 4px 9px; border-radius: 4px; font-size: 13px; background: color-mix(in srgb, var(--fc, var(--gold)) 12%, transparent); color: var(--text); text-decoration: none; }
a.topic:hover { background: var(--fc, var(--gold)); color: var(--on-gold); }
.lab { padding: 12px 14px; border-radius: 6px; border-inline-start: 3px solid var(--gold); background: var(--hover); font-size: 14px; line-height: 1.55; }
.lab b { font: 10px 'JetBrains Mono', monospace; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); display: block; margin-bottom: 4px; }
details.sub { border: 1px solid var(--bd); border-radius: 6px; margin-bottom: 8px; background: var(--panel-2); }
details.sub summary { cursor: pointer; padding: 11px 14px; font-weight: 600; font-size: 14px; list-style: none; display: flex; justify-content: space-between; gap: 10px; }
details.sub summary::-webkit-details-marker { display: none; }
details.sub summary::after { content: '▸'; color: var(--fc, var(--gold)); transition: transform 150ms; }
details.sub[open] summary::after { transform: rotate(90deg); }
details.sub .in { padding: 0 14px 12px; }

/* Q&A modal */
.modal { position: fixed; inset: 0; z-index: 120; display: none; align-items: flex-start; justify-content: center; padding: 6vh 16px 16px; background: var(--scrim); }
.modal.on { display: flex; }
.modal-box { width: 100%; max-width: 820px; max-height: 86vh; display: flex; flex-direction: column; border-radius: 10px; background: var(--panel); border: 1px solid var(--bd-2); border-top: 3px solid var(--fc, var(--gold)); position: relative; }
.modal-head { padding-block: 18px 12px; padding-inline: 22px 56px; border-bottom: 1px solid var(--bd); }
.modal-head h3 { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; font-size: 28px; margin: 4px 0 0; line-height: 1.15; }
.modal-list { overflow-y: auto; padding: 4px 22px 22px; overscroll-behavior: contain; }
.qa { display: flex; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--bd); }
.qa .n { flex: 0 0 26px; font: 12px 'JetBrains Mono', monospace; color: var(--fc, var(--gold)); padding-top: 2px; }
.qa .q { font-weight: 600; }
.qa .a { margin-top: 5px; color: var(--soft); }

.foot { margin: 56px auto 0; padding: 22px 0 40px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font: 12px 'JetBrains Mono', monospace; color: var(--meta); border-top: 1px solid var(--bd); }

@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .topbar { flex-wrap: wrap; padding: 16px 0 6px; }
  .brand { font-size: 12px; letter-spacing: 0.2em; }
  .hero { grid-template-columns: 1fr; gap: 22px; }
  .hero p { font-size: 16px; }
  .views { width: 100%; }
  .views .grp { flex: 1 1 100%; justify-content: space-between; }
  .drawer { top: auto; inset-inline: 0; width: 100%; height: 86vh; border-inline-start: 0; border-top: 1px solid var(--bd-2); border-radius: 14px 14px 0 0; transform: translateY(105%); }
  .drawer .grab { display: block; width: 44px; height: 5px; border-radius: 3px; background: var(--bd-2); margin: 8px auto 0; }
  .drawer-head { border-radius: 14px 14px 0 0; padding: 10px 18px 12px; }
  .drawer-body { padding: 4px 18px 28px; }
  .drawer h2 { font-size: 26px; padding-inline-end: 36px; }
  .modal { padding: 0; align-items: stretch; }
  .modal-box { max-height: none; border-radius: 0; }
}
@media (max-width: 760px) { [dir="rtl"] .drawer:not(.on) { transform: translateY(105%); } }

/* language button */
.lang-btn { height: 30px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--bd-2); background: var(--panel); color: var(--text); cursor: pointer; font: 600 13px 'IBM Plex Sans Arabic', 'Space Grotesk', sans-serif; }
.lang-btn:hover { border-color: var(--gold); }

/* where to learn */
.res { display: flex; flex-direction: column; gap: 6px; }
.res-a { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 2px 10px; align-items: center; padding: 10px 12px; border-radius: 6px; border: 1px solid var(--bd); background: var(--panel-2); text-decoration: none; }
.res-a:hover { border-color: var(--fc, var(--gold)); }
.res-k { grid-row: span 2; font: 10px 'JetBrains Mono', monospace; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 7px; border-radius: 4px; border: 1px solid var(--bd-2); color: var(--soft); white-space: nowrap; }
.res-k.k-lab { color: var(--teal); border-color: color-mix(in srgb, var(--teal) 45%, transparent); }
.res-k.k-course { color: var(--gold); border-color: color-mix(in srgb, var(--gold) 45%, transparent); }
.res-t { font-size: 14px; font-weight: 600; color: var(--text); }
.res-h { font: 11px 'JetBrains Mono', monospace; color: var(--meta); text-align: start; }

/* Arabic: a typeface with Arabic glyphs, and no letter-spacing (it breaks joined letters) */
[lang="ar"] .input { font-family: 'IBM Plex Sans Arabic', sans-serif; }
[lang="ar"] body { font-family: 'IBM Plex Sans Arabic', 'Space Grotesk', system-ui, sans-serif; }
[lang="ar"] .hero h1, [lang="ar"] .drawer h2, [lang="ar"] .modal-head h3, [lang="ar"] .band h2 { font-family: 'Amiri', 'Instrument Serif', Georgia, serif; }
[lang="ar"] .kicker, [lang="ar"] .sec-t, [lang="ar"] .vlab, [lang="ar"] .btn, [lang="ar"] .tag, [lang="ar"] .state,
[lang="ar"] .legend, [lang="ar"] .zig a, [lang="ar"] .zig-cap, [lang="ar"] .bprog, [lang="ar"] .hint, [lang="ar"] .res-k,
[lang="ar"] .node .mt, [lang="ar"] .bhours, [lang="ar"] .band h2 small, [lang="ar"] .band .gate b, [lang="ar"] .band .ms b, [lang="ar"] .lab b, [lang="ar"] .elx {
  letter-spacing: 0 !important; text-transform: none !important; font-family: 'IBM Plex Sans Arabic', 'JetBrains Mono', sans-serif;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}