/* Chavrusa — tokens */
:root {
  --paper: #ECEEE9;        /* Vilna-page grey-green paper */
  --paper-2: #E2E5DE;
  --ink: #1D2433;          /* blue-black ink */
  --ink-soft: #4A5368;
  --binding: #6B1E2A;      /* oxblood sefer binding */
  --gilt: #A9823A;         /* gold-stamped spine */
  --rule: #C7CCC2;
  --ok: #2F6B4F;
  --danger: #9B2C2C;
  --focus: #2B59C3;
  --radius-s: 4px;
  --radius-l: 14px;
  --he: 'Frank Ruhl Libre', 'Times New Roman', serif;
  --rashi: 'Noto Rashi Hebrew', 'Frank Ruhl Libre', serif;
  --ui: 'Rubik', system-ui, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #161B25; --paper-2: #1E2431; --ink: #E7E9E3; --ink-soft: #A9B0BF;
    --binding: #C66B78; --gilt: #D2AE63; --rule: #333B4A; --ok: #6FBF96; --danger: #E07A7A; --focus: #8EA9F0;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.55 var(--ui);
  height: 100dvh;
  display: flex;
  flex-direction: column;
}
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[hidden] { display: none !important; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3 { font-family: var(--he); font-weight: 700; line-height: 1.15; margin: 0 0 .5em; }
.small { font-size: .875rem; color: var(--ink-soft); }
.lede { color: var(--ink-soft); max-width: 60ch; }

/* Header */
.top {
  display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap;
  padding: .75rem 1.25rem; border-bottom: 1px solid var(--rule);
}
.brand { display: flex; align-items: baseline; gap: .5rem; text-decoration: none; color: var(--ink); }
.brand-he { font: 700 1.6rem/1 var(--he); color: var(--binding); }
.brand-en { font-weight: 500; letter-spacing: .02em; }
.today { margin: 0; font-size: .875rem; color: var(--ink-soft); }
.today b { color: var(--ink); font-weight: 500; }
.tabs { margin-inline-start: auto; display: flex; gap: .25rem; }
.tab {
  background: none; border: 0; padding: .45rem .8rem; border-radius: 999px; cursor: pointer; color: var(--ink-soft);
}
.tab[aria-current="page"] { background: var(--ink); color: var(--paper); }
@media (min-width: 1100px) { .tab[data-view="daf"] { display: none; } }

/* Buttons */
.primary, .secondary, .destructive, .send, .mic-small {
  border-radius: 999px; padding: .6rem 1.2rem; cursor: pointer; border: 1px solid transparent; font-weight: 500;
}
.primary, .send { background: var(--binding); color: #fff; }
.secondary, .mic-small { background: transparent; border-color: var(--ink-soft); }
.destructive { background: var(--danger); color: #fff; }
button:disabled { opacity: .5; cursor: progress; }

/* Intake */
.intake { flex: 1; display: grid; place-items: center; padding: 2rem 1rem; }
.intake-inner { width: min(640px, 100%); }
.intake h1 { font-size: clamp(2rem, 5vw, 2.8rem); }
.intake textarea, .manual input, .manual select, .email-row input {
  width: 100%; background: var(--paper-2); border: 1px solid var(--rule); border-radius: var(--radius-s); padding: .7rem .8rem;
}
.intake textarea { font-size: 1.05rem; resize: vertical; }
.intake-actions { display: flex; justify-content: flex-end; gap: .75rem; margin: .75rem 0 1.5rem; }
.manual summary { cursor: pointer; color: var(--ink-soft); }
.manual label { display: block; margin-top: .75rem; font-size: .9rem; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
.chips { border: 0; padding: 0; margin: .75rem 0 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.chips legend { font-size: .9rem; margin-bottom: .4rem; }
.chip input { position: absolute; opacity: 0; }
.chip span { display: inline-block; border: 1px solid var(--rule); border-radius: 999px; padding: .3rem .75rem; cursor: pointer; font-size: .9rem; }
.chip input:checked + span { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.chip input:focus-visible + span { outline: 2px solid var(--focus); }
.form-error { color: var(--danger); }

/* App layout */
.app { flex: 1; display: grid; min-height: 0; grid-template-rows: minmax(0, 1fr); }
.pane { padding: 1.25rem; min-width: 0; min-height: 0; overflow-y: auto; }
.intake { overflow-y: auto; }
@media (min-width: 1100px) {
  .app { grid-template-columns: minmax(360px, 1fr) minmax(520px, 1.35fr); grid-template-rows: 1fr; }
  .pane.learn { grid-column: 1; border-inline-end: 1px solid var(--rule); display: flex; flex-direction: column; overflow: hidden; }
  .pane.daf-pane { grid-column: 2; }
  .pane.level-pane, .pane.partners-pane { grid-column: 1 / -1; grid-row: 1; }
  .app:not([data-view="level"]) .level-pane, .app:not([data-view="partners"]) .partners-pane { display: none; }
  .app[data-view="level"] .learn, .app[data-view="level"] .daf-pane,
  .app[data-view="partners"] .learn, .app[data-view="partners"] .daf-pane { display: none; }
}
@media (max-width: 1099px) {
  .app .pane { display: none; }
  .app[data-view="learn"] .learn { display: flex; flex-direction: column; overflow: hidden; padding-bottom: .5rem; }
  .app[data-view="daf"] .daf-pane, .app[data-view="level"] .level-pane, .app[data-view="partners"] .partners-pane { display: block; }
  .tabs { width: 100%; overflow-x: auto; margin-inline-start: 0; }
  .tab { white-space: nowrap; padding: .4rem .7rem; font-size: .9rem; }
  .top { gap: .4rem 1rem; padding: .6rem 1rem; }
}

/* Conversation */
.talk { list-style: none; margin: 0; padding: 0 .25rem 1rem; flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 1rem; }
.turn { max-width: 62ch; }
.turn.learner { align-self: flex-end; background: var(--paper-2); padding: .6rem .9rem; border-radius: var(--radius-l) var(--radius-l) var(--radius-s) var(--radius-l); }
.turn.tutor p { margin: 0 0 .4rem; }
.turn.tutor .q { font-family: var(--he); font-size: 1.15rem; color: var(--binding); }
.turn .src-chips { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .3rem; }
.src-chip { font-size: .8rem; border: 1px solid var(--rule); border-radius: 999px; padding: .15rem .6rem; background: none; cursor: pointer; color: var(--ink-soft); }
.evidence-note { font-size: .8rem; color: var(--ok); margin-top: .25rem; }
.turn.error { color: var(--danger); }
.starter { padding: 1rem .25rem; }
.starter p { font-family: var(--he); font-size: 1.3rem; margin: 0 0 .6rem; }
.starter-chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.starter-chips button { border: 1px solid var(--ink-soft); background: none; border-radius: 999px; padding: .45rem .9rem; cursor: pointer; text-align: start; }

.shtender { display: flex; align-items: flex-end; gap: .6rem; padding-top: .75rem; border-top: 1px solid var(--rule); }
.shtender textarea { flex: 1; resize: none; max-height: 9rem; background: var(--paper-2); border: 1px solid var(--rule); border-radius: 22px; padding: .6rem 1rem; }
.mic { position: relative; flex: none; width: 52px; height: 52px; border-radius: 50%; border: 0; background: var(--ink); color: var(--paper); cursor: pointer; display: grid; place-items: center; }
.mic svg { width: 24px; height: 24px; fill: currentColor; position: relative; }
.mic-ring { position: absolute; inset: -4px; border-radius: 50%; border: 2px solid var(--binding); opacity: 0; }
.mic[aria-pressed="true"] { background: var(--binding); }
.mic[data-state="listening"] .mic-ring { animation: breathe 1.6s ease-in-out infinite; }
.mic[data-state="speaking"] { background: var(--gilt); }
@keyframes breathe { 0%,100% { transform: scale(1); opacity: .2; } 50% { transform: scale(1.12); opacity: .9; } }
@media (prefers-reduced-motion: reduce) { .mic-ring { animation: none !important; opacity: .7 !important; } }
.status { min-height: 1.4em; margin: .4rem 0 0; font-size: .85rem; color: var(--ink-soft); }

/* The daf — tzuras hadaf */
.daf-empty { max-width: 46ch; margin: 18vh auto 0; text-align: center; font-family: var(--he); font-size: 1.15rem; color: var(--ink-soft); }
.daf { max-width: 980px; margin: 0 auto; }
.daf-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; border-bottom: 2px solid var(--ink); padding-bottom: .35rem; margin-bottom: .9rem; }
.daf-head h2 { font-size: 1.4rem; margin: 0; }
.daf-head span { font: 700 1.4rem var(--he); }
.daf-body { display: grid; grid-template-columns: 1fr 1.7fr 1fr; gap: 1.1rem; align-items: start; }
.daf-main { direction: rtl; }
.daf-main .he { font: 400 1.32rem/1.75 var(--he); text-align: justify; margin: 0; }
.daf-main .en { direction: ltr; font: 400 .95rem/1.6 var(--he); color: var(--ink-soft); margin: .9rem 0 0; text-align: start; }
.daf-main .heading-word { font-weight: 700; font-size: 1.6em; }
.margin { font-family: var(--rashi); font-size: .88rem; line-height: 1.6; text-align: justify; }
.comment { margin: 0 0 1rem; }
.comment-head { display: block; font-family: var(--he); font-weight: 700; font-size: .95rem; margin-bottom: .1rem; }
.comment-head button { all: unset; cursor: pointer; border-bottom: 1px dotted var(--ink-soft); }
.comment-head button:focus-visible { outline: 2px solid var(--focus); }
.comment-why { display: block; direction: ltr; text-align: left; font-family: var(--ui); font-size: .75rem; color: var(--ink-soft); }
.comment-more { all: unset; cursor: pointer; font-family: var(--ui); font-size: .75rem; color: var(--binding); }
.daf-foot { margin-top: 1.25rem; border-top: 1px solid var(--rule); padding-top: .75rem; }
.links { display: flex; flex-wrap: wrap; gap: .5rem 1rem; }
.links a { color: var(--binding); }
.credit { font-size: .75rem; color: var(--ink-soft); }
@media (max-width: 760px) {
  .daf-body { grid-template-columns: 1fr; }
  .daf-main { order: -1; }
}
.related { max-width: 980px; margin: 2rem auto 0; }
.related h3 { font-size: 1.15rem; }
.layer { margin-bottom: .9rem; }
.layer-name { font-size: .85rem; color: var(--ink-soft); margin: 0 0 .3rem; }
.layer-list { display: flex; flex-wrap: wrap; gap: .35rem; }

/* Ladders — four sefer spines */
.ladders { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.25rem; margin-top: 1rem; }
.spine { background: var(--paper-2); border-radius: var(--radius-s); border-top: 6px solid var(--binding); padding: 1rem; }
.spine h3 { font-size: 1.3rem; display: flex; justify-content: space-between; align-items: baseline; }
.spine h3 small { font: 500 .8rem var(--ui); color: var(--ink-soft); }
.rungs { list-style: none; margin: .5rem 0 .75rem; padding: 0; display: flex; flex-direction: column-reverse; gap: 2px; }
.rung { position: relative; font-size: .78rem; padding: .3rem .5rem .3rem 1.6rem; color: var(--ink-soft); border-inline-start: 3px solid var(--rule); }
.rung.reached { border-inline-start-color: var(--gilt); color: var(--ink); }
.rung.here { background: color-mix(in srgb, var(--gilt) 18%, transparent); font-weight: 500; }
.rung .n { position: absolute; inset-inline-start: .45rem; font-weight: 600; }
.meters { display: grid; grid-template-columns: auto 1fr; gap: .2rem .6rem; font-size: .78rem; align-items: center; }
.meter { height: 6px; background: var(--rule); border-radius: 3px; overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--ink); }
.conf { font-size: .78rem; color: var(--ink-soft); margin: .6rem 0 .3rem; }
.ev { font-size: .8rem; margin: .35rem 0 0; padding-inline-start: .6rem; border-inline-start: 2px solid var(--rule); }
.ev q { font-family: var(--he); }

/* Partners */
.share-box { max-width: 560px; background: var(--paper-2); padding: 1rem; border-radius: var(--radius-s); margin-bottom: 1.5rem; }
.switch { display: flex; gap: .6rem; align-items: center; font-weight: 500; cursor: pointer; }
.switch input { width: 1.1rem; height: 1.1rem; accent-color: var(--binding); }
.email-row { display: block; font-size: .9rem; margin: .75rem 0; }
.match { display: grid; grid-template-columns: 4rem 1fr; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--rule); max-width: 760px; }
.match .score { font: 700 1.8rem/1 var(--he); color: var(--binding); }
.match h3 { font-size: 1.15rem; margin-bottom: .2rem; }
.match ul { margin: .3rem 0; padding-inline-start: 1.1rem; font-size: .9rem; }
.danger { margin-top: 2.5rem; max-width: 560px; }
.danger summary { cursor: pointer; color: var(--danger); }

.boot { position: fixed; inset: 0; display: grid; place-items: center; background: var(--paper); font-family: var(--he); font-size: 1.2rem; color: var(--ink-soft); z-index: 10; }

body.intaking .tabs { display: none; }

/* Page view: printed page + highlighted text */
.daf-head { flex-wrap: wrap; }
.daf-titles { display: flex; align-items: baseline; gap: 1rem; flex: 1; justify-content: space-between; min-width: 0; }
.view-toggle { display: inline-flex; border: 1px solid var(--rule); border-radius: 999px; padding: 2px; flex: none; }
.view-toggle button { border: 0; background: none; padding: .3rem .8rem; border-radius: 999px; cursor: pointer; font-size: .85rem; color: var(--ink-soft); }
.view-toggle button[aria-selected="true"] { background: var(--ink); color: var(--paper); }
.scan { margin: 0 auto 1rem; max-width: 820px; }
.scan a { display: block; background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-s); overflow: hidden; }
.scan img { display: block; width: 100%; height: auto; }
.scan figcaption { font-size: .75rem; color: var(--ink-soft); margin-top: .4rem; }
.page-text .seg { margin: 0 0 .5rem; font: 400 1.18rem/1.75 var(--he); text-align: justify; color: var(--ink-soft); }
.page-text .seg.hl { color: var(--ink); background: color-mix(in srgb, var(--gilt) 20%, transparent); box-shadow: -.4rem 0 0 color-mix(in srgb, var(--gilt) 20%, transparent), .4rem 0 0 color-mix(in srgb, var(--gilt) 20%, transparent); border-radius: 2px; }
.daf-main { max-height: none; }

/* Live progress while the chavrusa works */
.turn.working { color: var(--ink-soft); }
.work-title { font-family: var(--he); font-size: 1.05rem; margin: 0 0 .3rem; color: var(--ink); }
.work-steps { list-style: none; margin: 0; padding: 0; font-size: .88rem; }
.work-steps li { padding: .1rem 0 .1rem 1.1rem; position: relative; }
.work-steps li::before { content: ''; position: absolute; left: .2rem; top: .6em; width: .45rem; height: .45rem; border-radius: 50%; background: var(--ok); }
.work-steps li.now::before { background: var(--gilt); animation: pulse 1.1s ease-in-out infinite; }
.work-steps li.now { color: var(--ink); }
@keyframes pulse { 50% { opacity: .25; } }
@media (prefers-reduced-motion: reduce) { .work-steps li.now::before { animation: none; } }
.prep { margin-top: .35rem; font-size: .8rem; color: var(--ink-soft); }
.prep summary { cursor: pointer; }
.prep ol { margin: .3rem 0 0; padding-inline-start: 1.2rem; }
.show-page { margin-top: .4rem; border: 1px solid var(--binding); color: var(--binding); background: none; border-radius: 999px; padding: .3rem .9rem; cursor: pointer; font-size: .85rem; }
@media (min-width: 1100px) { .show-page { display: none; } }
@media (max-width: 760px) {
  .daf-head { gap: .5rem; }
  .daf-titles { flex-basis: 100%; }
  .daf-head h2, .daf-head .daf-titles span { font-size: 1.15rem; }
}

/* Sign in */
.login { flex: 1; display: grid; place-items: center; padding: 2rem 1rem; overflow-y: auto; }
.login-inner { width: min(560px, 100%); }
.login-he { font: 700 3rem/1 var(--he); color: var(--binding); margin: 0 0 .6rem; }
.login h1 { font-size: clamp(1.7rem, 4.5vw, 2.4rem); }
.google { display: flex; align-items: center; justify-content: center; gap: .7rem; width: 100%; padding: .8rem 1rem; margin: 1.4rem 0 1rem; border-radius: 999px; border: 1px solid var(--rule); background: #fff; color: #1f1f1f; font-weight: 500; cursor: pointer; }
.google svg { width: 20px; height: 20px; }
.email-login { margin: .5rem 0; }
.email-login label { display: block; font-size: .9rem; color: var(--ink-soft); margin-bottom: .35rem; }
.email-login .row { display: flex; gap: .5rem; }
.email-login input { flex: 1; min-width: 0; background: var(--paper-2); border: 1px solid var(--rule); border-radius: 999px; padding: .65rem 1rem; }
.link-btn { all: unset; cursor: pointer; color: var(--binding); font-size: .85rem; text-decoration: underline; text-underline-offset: 2px; }
.link-btn:focus-visible { outline: 2px solid var(--focus); }
.login .small a { color: var(--binding); }

/* Account + credit */
.account { display: flex; align-items: center; gap: .8rem; }
.balance { border: 1px solid var(--rule); background: var(--paper-2); border-radius: 999px; padding: .3rem .8rem; font-size: .85rem; cursor: pointer; color: var(--ink); }
.balance.low { border-color: var(--binding); color: var(--binding); }
@media (min-width: 1100px) { .account { order: 3; } }

/* Bit top-up */
.paywall { border: 1px solid var(--binding); background: var(--paper-2); border-radius: var(--radius-l); padding: 1rem 1.1rem; margin: .5rem 0 .75rem; }
.paywall h2 { font-size: 1.25rem; margin-bottom: .3rem; }
.pw-lead { margin: 0 0 .6rem; color: var(--ink-soft); font-size: .95rem; }
.pw-steps { margin: 0 0 .8rem; padding-inline-start: 1.2rem; }
.pw-steps li { margin: .25rem 0; }
.pw-code { font-size: 1.15rem; letter-spacing: .12em; }
.pw-status { margin: .6rem 0 0; font-size: .9rem; color: var(--ok); min-height: 1.2em; }

.pw-phone, .pw-code { white-space: nowrap; }