*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);font-family:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;-webkit-font-smoothing:antialiased}
[data-theme]{
  --bg:#0b0d10; --surface:#15181e; --surface-2:#1b1f26; --border:#242932;
  --text:#eef1f5; --muted:#8b93a2; --faint:#5f6774;
  --accent:oklch(0.86 0.2 128); --accent-ink:#0c1206; --accent-dim:#15230f; --accent-border:#243d18;
  --dose-empty:#2a303a; --shadow:0 22px 55px -34px rgba(0,0,0,.75); --overlay:rgba(6,8,11,.74);
}
[data-theme="light"]{
  --bg:#f3f4f0; --surface:#ffffff; --surface-2:#eceee9; --border:#e0e2dc;
  --text:#14171c; --muted:#545d6e; --faint:#767e8c;
  --accent:oklch(0.66 0.19 131); --accent-ink:#0c1206; --accent-dim:#eef6da; --accent-border:#cde29e;
  --dose-empty:#dde1d8; --shadow:0 18px 44px -30px rgba(40,50,20,.26); --overlay:rgba(20,23,28,.42);
}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:8px}
input{font-family:inherit}
@keyframes irisspin{to{transform:rotate(360deg)}}
@keyframes irisfade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes irispop{from{opacity:0;transform:translateY(10px) scale(.99)}to{opacity:1;transform:none}}
@media print{
  [data-theme]{--bg:#fff;--surface:#fff;--surface-2:#fff;--text:#000;--muted:#333;--faint:#555;--border:#bbb;--shadow:none;--dose-empty:#ddd}
  [data-noprint]{display:none!important}
  [data-printonly]{display:block!important}
  [data-rec]{break-inside:avoid;border:1px solid #999!important;box-shadow:none!important}
}

/* ============ LAYOUT / SHELL ============ */
.app-root{min-height:100vh;background:var(--bg);color:var(--text)}
.app-shell{max-width:100%;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;position:relative}
.app-header{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:color-mix(in srgb, var(--bg) 82%, transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:11px;cursor:pointer}
.brand-mark{width:32px;height:32px;border-radius:50%;border:2.5px solid var(--accent);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.brand-text{display:flex;flex-direction:column;line-height:1}
.brand-name{font:700 19px 'Space Grotesk',sans-serif;letter-spacing:.13em}
.brand-sub{font:500 8.5px 'IBM Plex Mono',monospace;color:var(--faint);letter-spacing:.1em;margin-top:3px}
.header-actions{display:flex;align-items:center;gap:6px}
.icon-btn{width:38px;height:38px;border-radius:11px;border:1px solid var(--border);background:var(--surface);color:var(--muted);font-size:15px;cursor:pointer}
.app-main{flex:1;padding:0 20px 48px}

/* ============ SHARED TEXT / UTILITY ============ */
.eyebrow{font:600 11px 'IBM Plex Mono',monospace;letter-spacing:.16em;color:var(--faint)}
.eyebrow-sm{font:500 11px 'IBM Plex Mono',monospace;letter-spacing:.1em;color:var(--faint)}
.mono-faint-11{font:500 11px 'IBM Plex Mono',monospace;color:var(--faint)}
.accent-icon{color:var(--accent);font-size:18px}
.txt-muted{color:var(--muted)}
.txt-strong{color:var(--text)}
.b600{font-weight:600}
.flex1{flex:1}
.mt10{margin-top:10px}
.mt26{margin-top:26px}
.center-row{display:flex;justify-content:center;margin-top:2px}
.chev{color:var(--faint);font-size:16px}
.chip-row{display:flex;gap:8px;flex-wrap:wrap}
.dots-row{display:flex;gap:4px;margin-top:10px}
.dots-trail{margin-left:auto;display:flex;gap:4px}
.meta-row{display:flex;align-items:center;gap:8px;margin-top:11px;flex-wrap:wrap}
.list-col{display:flex;flex-direction:column;gap:10px}
.list-col-9{display:flex;flex-direction:column;gap:9px}
.list-col-13{display:flex;flex-direction:column;gap:13px}

/* ============ BUTTONS / LINKS ============ */
.link-btn{border:0;background:transparent;color:var(--faint);font:600 10px 'IBM Plex Mono',monospace;letter-spacing:.08em;cursor:pointer}
.link-btn:hover{color:var(--text)}
.pill-btn{border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:11px;padding:9px 14px;font:600 12.5px 'Space Grotesk',sans-serif;cursor:pointer}
.pill-btn:hover{border-color:var(--accent-border);color:var(--text)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:15px;padding:15px 16px;cursor:pointer}
.card:hover{border-color:var(--accent-border)}
.row-card{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px 16px;cursor:pointer}
.row-card:hover{border-color:var(--accent-border)}
.link-card{display:flex;align-items:center;gap:12px;background:var(--surface-2);border:1px solid var(--border);border-radius:14px;padding:14px 15px;text-decoration:none;color:inherit}
.link-card:hover{border-color:var(--accent-border)}
.link-accent{color:var(--accent);text-decoration:none}
.btn-accent{border:0;background:var(--accent);color:var(--accent-ink);font:600 13px 'Space Grotesk',sans-serif;padding:9px 16px;border-radius:11px;cursor:pointer;flex:0 0 auto}
.btn-accent-sm{background:var(--accent);color:var(--accent-ink);border:none;border-radius:10px;padding:9px 14px;font:600 12.5px 'Space Grotesk',sans-serif;cursor:pointer;white-space:nowrap}

/* ============ HOME ============ */
.hero{padding:34px 4px 22px}
.hero-title{font:700 34px/1.12 'Space Grotesk',sans-serif;letter-spacing:-.02em;margin:0 0 12px;text-wrap:balance;max-width:640px}
.hero-sub{font-size:15px;line-height:1.6;color:var(--muted);margin:0;max-width:520px}
.search-trigger{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px 17px;cursor:text;box-shadow:var(--shadow)}
.search-trigger-text{font-size:15px;color:var(--faint)}
.kbd{margin-left:auto;font:600 10px 'IBM Plex Mono',monospace;background:var(--surface-2);border:1px solid var(--border);color:var(--faint);padding:4px 7px;border-radius:6px}
.try-label{font:600 11px 'IBM Plex Mono',monospace;letter-spacing:.14em;color:var(--faint);margin:20px 4px 10px}
.try-label-intro{font:600 11px 'IBM Plex Mono',monospace;letter-spacing:.14em;color:var(--faint);margin-bottom:12px}
.recent-head{display:flex;align-items:center;justify-content:space-between;margin:32px 4px 12px}
.recent-rail{display:flex;gap:10px;overflow-x:auto;margin:0 -20px;padding:2px 20px 8px}
.recent-card{flex:0 0 232px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:13px 14px;cursor:pointer;display:flex;flex-direction:column}
.recent-card:hover{border-color:var(--accent-border)}
.recent-crumb{font:500 9.5px 'IBM Plex Mono',monospace;color:var(--faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.recent-name{font:600 14px/1.32 'Space Grotesk',sans-serif;margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:37px}
.browse-head{display:flex;align-items:center;justify-content:space-between;margin:34px 4px 14px}
.chapters-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(158px,1fr));gap:11px}
.home-footer{margin:40px 4px 0;padding-top:20px}
.source-head{display:flex;align-items:center;justify-content:space-between;margin:0 0 12px}
.source-note{font-size:12.5px;line-height:1.6;color:var(--faint);margin:0 0 12px;max-width:560px}

/* ============ SEARCH ============ */
.view-pad{padding-top:20px}
.searchbar{display:flex;align-items:center;gap:11px;background:var(--surface);border:1px solid var(--accent-border);border-radius:16px;padding:14px 16px;box-shadow:var(--shadow)}
.search-input{flex:1;border:0;outline:0;background:transparent;color:var(--text);font-size:16px}
.clear-btn{border:0;background:transparent;color:var(--faint);font-size:18px;cursor:pointer}
.ai-row{display:flex;align-items:center;gap:10px;margin-top:11px}
.ai-note{margin-top:11px;background:var(--accent-dim);border:1px solid var(--accent-border);border-radius:12px;padding:11px 13px;font-size:13px;color:var(--text)}
.intro-note{margin-top:22px;font-size:13.5px;line-height:1.6;color:var(--muted);max-width:520px}
.results-label{font:600 11px 'IBM Plex Mono',monospace;letter-spacing:.12em;color:var(--faint);margin:22px 2px 12px}
.card-crumb{font:500 10px 'IBM Plex Mono',monospace;color:var(--faint);letter-spacing:.04em;margin-bottom:6px}
.result-name{font:600 16px/1.25 'Space Grotesk',sans-serif;color:var(--text)}
.empty{margin-top:40px;text-align:center;color:var(--muted)}
.empty-icon{font-size:30px;margin-bottom:10px;opacity:.5}
.empty-title{font:600 16px 'Space Grotesk',sans-serif;color:var(--text)}
.empty-sub{font-size:13.5px;margin-top:8px}

/* ============ CHAPTER / SUB / SIT ============ */
.crumbbar{display:flex;align-items:center;gap:8px;padding:20px 2px 4px}
.crumbbar-9{display:flex;align-items:center;gap:9px;padding:20px 2px 4px}
.back-btn{border:0;background:transparent;color:var(--muted);font-size:22px;line-height:1;cursor:pointer;padding:0;display:inline-flex;align-items:center}
.crumb-static{font:500 11px 'IBM Plex Mono',monospace;letter-spacing:.08em;color:var(--faint);line-height:1}
.crumb-wrap{display:flex;align-items:center;flex-wrap:wrap;line-height:1.5}
.crumb-sep{color:var(--faint);opacity:.5;margin:0 5px;font:500 11px 'IBM Plex Mono',monospace}
.crumb-link{font:500 11px 'IBM Plex Mono',monospace;letter-spacing:.05em;color:var(--faint);cursor:pointer}
.crumb-link:hover{color:var(--accent)}
.title-ch{font:700 28px/1.1 'Space Grotesk',sans-serif;margin:8px 2px 4px;letter-spacing:-.01em}
.title-sub{font:700 26px/1.12 'Space Grotesk',sans-serif;margin:8px 2px 4px;letter-spacing:-.01em}
.title-sit{font:700 27px/1.14 'Space Grotesk',sans-serif;margin:10px 2px 16px;letter-spacing:-.01em}
.title-favs{font:700 26px 'Space Grotesk',sans-serif;margin:8px 2px 20px;letter-spacing:-.01em}
.view-meta{font:500 12px 'IBM Plex Mono',monospace;color:var(--faint);margin:0 2px 20px}
.row-num{font:600 12px 'IBM Plex Mono',monospace;color:var(--faint);width:24px}
.row-name{font:500 16px 'Space Grotesk',sans-serif;flex:1}
.sit-name{font:600 15.5px/1.3 'Space Grotesk',sans-serif}

/* ---- situation actions / banners ---- */
.action-row{display:flex;gap:8px;margin:0 0 22px;flex-wrap:nowrap;overflow-x:auto}
.action-btn{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:11px;padding:9px 14px;font:600 13px 'Space Grotesk',sans-serif;cursor:pointer}

.nudge-banner{display:flex;align-items:center;gap:9px;margin:0 0 16px;padding:11px 14px;border-radius:12px;background:oklch(0.55 0.11 155 / .12);border:1px solid oklch(0.6 0.12 155 / .32)}
.nudge-icon{font-size:14px;flex:0 0 auto}
.nudge-text{font-size:12.5px;line-height:1.5;color:var(--text);opacity:.92}

/* ---- recommendation cards ---- */
.rec-card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:17px 17px 16px;position:relative;overflow:hidden}
.rec-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.rec-title-group{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.rec-exam{font:600 16px 'Space Grotesk',sans-serif}
.grade-chip{font:700 10px 'IBM Plex Mono',monospace;border:1px solid var(--border);color:var(--muted);padding:5px 8px;border-radius:7px;white-space:nowrap}
.rec-comments{font-size:13.5px;line-height:1.6;color:var(--text);opacity:.86;margin:13px 0 0;white-space:pre-line}
.rec-other{margin-top:12px;background:var(--surface-2);border-radius:11px;padding:11px 13px}
.rec-other-label{font:600 9.5px 'IBM Plex Mono',monospace;letter-spacing:.1em;color:var(--faint);margin-bottom:5px}
.rec-other-text{font-size:12.5px;line-height:1.55;color:var(--muted);margin:0;white-space:pre-line}
.dose-row{display:flex;align-items:center;gap:10px;margin-top:14px;padding-top:13px;border-top:1px solid var(--border)}
.dose-segs{display:flex;gap:3px}

/* ---- print-only ---- */
.print-head{display:none;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid #000}
.print-brand-row{display:flex;align-items:baseline;gap:10px}
.print-brand{font:700 22px 'Space Grotesk',sans-serif;letter-spacing:.14em;color:#000}
.print-sub{font:500 11px 'IBM Plex Mono',monospace;color:#333}
.print-crumb{font:500 11px 'IBM Plex Mono',monospace;color:#444;margin-top:8px}
.print-eyebrow{display:none;font:600 15px 'IBM Plex Mono',monospace;letter-spacing:.03em;color:#333;margin:0 2px 6px;text-transform:uppercase}
.print-foot{display:none;margin-top:20px;padding-top:10px;border-top:1px solid #000;font:500 10px/1.55 'IBM Plex Mono',monospace;color:#333}

/* ============ FAVORITES ============ */
.favs-head-pad{padding:22px 2px 4px}
.fav-crumb{font:500 10px 'IBM Plex Mono',monospace;color:var(--faint);margin-bottom:6px}
.fav-meta-row{display:flex;align-items:center;gap:8px;margin-top:10px}
.empty-2{margin-top:44px;text-align:center;color:var(--muted)}
.empty-icon-2{font-size:30px;opacity:.4;margin-bottom:10px}

/* ============ BOTTOM NAV ============ */
.app-nav{position:sticky;bottom:0;z-index:30;display:flex;background:color-mix(in srgb, var(--bg) 88%, transparent);backdrop-filter:blur(14px);border-top:1px solid var(--border)}
.nav-icon-17{font-size:17px}
.nav-icon-15{font-size:15px}
.nav-label{font:600 9.5px 'IBM Plex Mono',monospace;letter-spacing:.06em}

/* ============ TOAST / SNACKBARS ============ */
.toast{position:fixed;left:50%;bottom:84px;transform:translateX(-50%);z-index:60;background:var(--accent);color:var(--accent-ink);font:600 13px 'Space Grotesk',sans-serif;padding:11px 18px;border-radius:12px;box-shadow:var(--shadow)}
.update-card{position:fixed;left:12px;right:12px;bottom:calc(72px + env(safe-area-inset-bottom));z-index:70;background:var(--surface);border:1px solid var(--accent-border);border-radius:16px;padding:14px 16px;display:flex;align-items:center;gap:12px;box-shadow:0 12px 32px rgba(0,0,0,.3);max-width:440px;margin:0 auto}
.install-card{position:fixed;left:12px;right:12px;bottom:calc(72px + env(safe-area-inset-bottom));z-index:70;background:var(--surface);border:1px solid var(--accent-border);border-radius:16px;box-shadow:var(--shadow);padding:14px 15px;display:flex;align-items:center;gap:13px;max-width:520px;margin:0 auto}
.snack-icon{width:38px;height:38px;border-radius:10px;background:var(--accent-dim);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:19px;flex:0 0 auto}
.snack-body{flex:1;min-width:0}
.snack-title-135{font:600 13.5px 'Space Grotesk',sans-serif;color:var(--text)}
.snack-title-14{font:600 14px 'Space Grotesk',sans-serif;color:var(--text)}
.snack-sub-faint{font-size:11.5px;color:var(--faint);margin-top:2px}
.snack-sub-muted{font-size:11.5px;color:var(--muted);margin-top:1px}
.snack-dismiss{border:0;background:transparent;color:var(--faint);font-size:13px;cursor:pointer;padding:6px 4px}
.snack-close{border:0;background:transparent;color:var(--faint);font-size:16px;cursor:pointer;padding:6px 4px;flex:0 0 auto}

/* ============ OVERLAYS / MODALS ============ */
.overlay{position:fixed;inset:0;z-index:80;background:var(--overlay);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:max(20px,env(safe-area-inset-top)) 16px max(20px,env(safe-area-inset-bottom))}
.modal{width:100%;max-width:540px;max-height:100%;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px 14px;border-bottom:1px solid var(--border);flex:0 0 auto}
.modal-title{font:700 20px 'Space Grotesk',sans-serif;margin:0}
.modal-close{width:34px;height:34px;border-radius:10px;border:1px solid var(--border);background:var(--surface-2);color:var(--muted);font-size:16px;cursor:pointer}
.modal-body{overflow-x:hidden;overflow-y:auto;padding:18px 22px 24px}
.modal-body-2{overflow:auto;padding:18px 22px 24px}
.legend-label{font:600 10px 'IBM Plex Mono',monospace;letter-spacing:.12em;color:var(--faint);margin:0 0 10px}
.ll-first{margin:6px 0 10px}
.ll-grad{margin:16px 0 8px}
.al-first{margin:6px 0 8px}
.al-8{margin:0 0 8px}
.al-20{margin:20px 0 10px}
.legend-list{display:flex;flex-direction:column;gap:7px;margin-bottom:20px}
.hl{background:var(--accent-dim);color:var(--accent);border-radius:3px;padding:0 1px;font-weight:600}
.legend-ind-row{display:flex;align-items:flex-start;gap:10px}
.legend-desc{font-size:12.5px;color:var(--muted);flex:1}
@media (max-width:420px){
  .legend-ind-row{flex-direction:column;gap:4px}
}
.legend-dose-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.legend-dose-segs{display:flex;gap:3px;width:97px;flex:0 0 auto}
.legend-est{font-size:12px;color:var(--muted)}
.legend-mod-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:6px}
.legend-mod-row{display:flex;align-items:center;gap:9px}
.legend-mod-name{font-size:12.5px;color:var(--text)}
.legend-grad-text{font-size:12.5px;color:var(--muted);line-height:1.7}
.about-p{font-size:13.5px;line-height:1.65;color:var(--text);opacity:.9;margin:0 0 18px}
.about-rows{display:flex;flex-direction:column;gap:2px;margin-bottom:12px}
.about-row{display:flex;align-items:baseline;gap:8px;font-size:13px;color:var(--text)}
.about-key{font:500 10.5px 'IBM Plex Mono',monospace;color:var(--faint);width:88px;flex:0 0 auto}
.link-icon{font-size:20px;color:var(--accent)}
.link-title{display:block;font:600 13.5px 'Space Grotesk',sans-serif;color:var(--text)}
.link-meta{display:block;font:500 11px 'IBM Plex Mono',monospace;color:var(--faint);margin-top:4px}