/* ===== Design tokens ===== */
:root {
  --bg: #faf6ee;
  --bg-elevated: #ffffff;
  --ink: #2b241b;
  --ink-soft: #5c5347;
  --line: #e4d9c4;
  --accent: #8a4b2e;
  --accent-soft: #f1e3d1;
  --accent-strong: #6d3a22;
  --shen: #a0522d;
  --regel: #6b7f3f;
  --bor: #3f6f7f;
  --esh: #b23b2e;
  --shadow: 0 4px 16px rgba(43, 36, 27, 0.08);
  --radius: 14px;
  --font-head: "Frank Ruhl Libre", "David Libre", serif;
  --font-body: "Heebo", "Arial Hebrew", sans-serif;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
  direction: rtl;
  transition: background .2s ease, color .2s ease;
}

img, svg { max-width: 100%; }

a { color: var(--accent-strong); }

h1, h2, h3 { font-family: var(--font-head); color: var(--ink); margin: 0 0 .4em; }

/* ===== Layout ===== */
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

/* ===== Site header ===== */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg-elevated);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 14px;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
}
.brand .mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 1.1rem;
}

/* ===== Auth (login / register) ===== */
.auth-area {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-inline-start: auto;
}
.auth-link {
  font-size: .9rem;
  color: var(--ink-soft);
  text-decoration: none;
  background: none;
  border: none;
  font-family: inherit;
  cursor: pointer;
  padding: 0;
}
.auth-link:hover { color: var(--accent-strong); }
.auth-link-primary {
  background: var(--accent);
  color: #fff;
  padding: 7px 16px;
  border-radius: 999px;
}
.auth-link-primary:hover { color: #fff; opacity: .9; }

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.auth-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: .9rem;
  color: var(--ink-soft);
}
.auth-form input {
  font-family: inherit;
  font-size: 1rem;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-elevated);
  color: var(--ink);
}
.auth-form input:focus {
  outline: none;
  border-color: var(--accent);
}
.auth-submit {
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
.auth-submit:hover { opacity: .9; }
.auth-submit:disabled { opacity: .6; cursor: default; }
.auth-error {
  color: #b23b2e;
  font-size: .88rem;
  margin: 0;
}

/* ===== Hero ===== */
.hero {
  padding: 44px 0 30px;
  border-bottom: 1px solid var(--line);
}
.hero p.lead {
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 60ch;
}
.breadcrumbs {
  font-size: .85rem;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.breadcrumbs a { color: var(--ink-soft); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }

/* ===== Lesson cards (index) ===== */
.group-title {
  margin-top: 30px;
  font-size: 1rem;
  color: var(--ink-soft);
}
.lesson-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
  padding: 30px 0 60px;
}
.lesson-card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform .15s ease, border-color .15s ease;
}
.lesson-card:hover { transform: translateY(-3px); border-color: var(--accent); }
.lesson-card h3 { font-size: 1.15rem; }
.lesson-card p { margin: 0; color: var(--ink-soft); font-size: .92rem; }
.lesson-card .meta { font-size: .8rem; color: var(--ink-soft); }

/* ===== Lesson page ===== */
.lesson-title-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.lesson-title {
  font-size: 2rem;
  margin: 0;
}
.lesson-source {
  color: var(--ink-soft);
  font-size: .95rem;
}
.intro-box {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 20px 0 34px;
  box-shadow: var(--shadow);
}
.intro-box h2 { font-size: 1.1rem; margin-bottom: 8px; }
.intro-box h3 {
  font-size: 1rem;
  margin: 22px 0 6px;
  color: var(--accent-strong);
}
.intro-box h3:first-of-type { margin-top: 8px; }
.intro-box p { margin: 0 0 10px; }

.table-scroll {
  overflow-x: auto;
  margin-top: 18px;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  min-width: 560px;
}
.data-table th, .data-table td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: center;
}
.data-table th {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}
.data-table td:nth-child(2) { text-align: start; color: var(--ink-soft); }
.data-table td:first-child { font-weight: 600; }
.avot-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}
.avot-list li {
  padding: 5px 14px;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 600;
  color: #fff;
}
.avot-list li[data-kind="shen"] { background: var(--shen); }
.avot-list li[data-kind="regel"] { background: var(--regel); }
.avot-list li[data-kind="bor"] { background: var(--bor); }
.avot-list li[data-kind="esh"] { background: var(--esh); }

/* Accordion sections for each Av Nezikin */
.nezek {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}
.nezek > summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-head);
  font-size: 1.3rem;
  border-inline-start: 6px solid var(--accent);
}
.nezek[data-kind="shen"] > summary { border-color: var(--shen); }
.nezek[data-kind="regel"] > summary { border-color: var(--regel); }
.nezek[data-kind="bor"] > summary { border-color: var(--bor); }
.nezek[data-kind="esh"] > summary { border-color: var(--esh); }

.nezek > summary::-webkit-details-marker { display: none; }
.nezek > summary .icon {
  font-size: 1.4rem;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  flex-shrink: 0;
}
.nezek > summary .title-wrap { display: flex; flex-direction: column; gap: 2px; }
.nezek > summary .subtitle { font-family: var(--font-body); font-size: .82rem; color: var(--ink-soft); font-weight: 400; }
.nezek > summary .chevron {
  margin-inline-start: auto;
  transition: transform .2s ease;
  color: var(--ink-soft);
}
.nezek[open] > summary .chevron { transform: rotate(180deg); }

.nezek-body { padding: 4px 22px 24px; }
.nezek-body p { margin: 0 0 14px; }
.nezek-body .definition {
  font-weight: 600;
  color: var(--ink);
}

.example {
  border-top: 1px dashed var(--line);
  padding-top: 16px;
  margin-top: 16px;
  display: grid;
  gap: 14px;
}
@media (min-width: 640px) {
  .example.with-media { grid-template-columns: 1.3fr 1fr; align-items: start; }
}
.example h4 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: var(--accent-strong);
}
.example p { margin: 0 0 8px; color: var(--ink); font-size: .96rem; }
.example p:last-child { margin-bottom: 0; }

/* Media placeholder box: swap for a real <img>/<video> once assets are ready */
.media-slot {
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--ink-soft);
  min-height: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  padding: 14px;
  font-size: .8rem;
}
.media-slot .icon { font-size: 1.6rem; }
.media-slot code {
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 6px;
  direction: ltr;
  display: inline-block;
  font-size: .72rem;
}

.progress-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}
.progress-toggle {
  font-family: inherit;
  font-size: .85rem;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: var(--bg-elevated);
  color: var(--accent-strong);
  cursor: pointer;
}
.progress-toggle:disabled { cursor: default; opacity: .6; }
.progress-toggle.done {
  background: var(--accent);
  color: #fff;
}
.progress-hint {
  font-size: .8rem;
  color: var(--ink-soft);
}

.headline-quotes {
  list-style: none;
  padding: 0;
  margin: 0 0 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.headline-quotes li {
  background: var(--accent-soft);
  border-inline-start: 3px solid var(--accent);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: .9rem;
  color: var(--ink-soft);
}

.glossary-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}
.glossary-list li {
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: .9rem;
}

footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 0 50px;
  color: var(--ink-soft);
  font-size: .85rem;
  text-align: center;
}