/* Kursor Education — sayt stilləri. Bütün rəng/ölçü/radius dəyərləri
   design/tokens.css-dən gəlir, burada yeni hex yazılmır. */

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* ---------- Is sehifeleri tipoqrafiyasi (030) ---------- */
/* design/tokens.css-deki t-display/t-h2/t-h3 landing (marketinq, /
   /haqqimizda /telimler) ucun nezerde tutulub - kabinet/admin/auth/
   elaqe/elanlar kimi IS sehifelerinde eyni klasslar hesabat/sixilmish
   sehifelerde chox iri gorunurdu. Bu klasslar YALNIZ o sehifelerde
   istifade olunur, tokens.css-e toxunulmayib (brend-bukdan gelir). */
.t-page-title { font-family: var(--font-sans); font-size: 28px; line-height: 34px; font-weight: 700; }
.t-task-title { font-family: var(--font-sans); font-size: 26px; line-height: 32px; font-weight: 700; }
.t-group-title { font-family: var(--font-sans); font-size: 22px; line-height: 28px; font-weight: 700; }
.t-subgroup-title { font-family: var(--font-sans); font-size: 18px; line-height: 24px; font-weight: 700; }
.t-section-title { font-family: var(--font-sans); font-size: 18px; line-height: 24px; font-weight: 700; }

@media (max-width: 640px) {
  .t-page-title { font-size: 24px; line-height: 30px; }
  .t-task-title { font-size: 22px; line-height: 28px; }
  .t-group-title { font-size: 20px; line-height: 26px; }
  .t-subgroup-title { font-size: 17px; line-height: 23px; }
  /* Landing sehifeleri (/, /haqqimizda, /telimler) - masaustu olchu
     deyishmir, yalniz mobil ~33% kicildilir (030-un teleb etdiyi kimi). */
  .t-display { font-size: 30px; line-height: 38px; }
  .t-h2 { font-size: 24px; line-height: 30px; }
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .2s;
}
.site-header.scrolled { box-shadow: var(--shadow-header); }
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand .logo { height: 40px; width: auto; }
.logo-dark { display: block; }
.logo-light { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .logo-dark { display: none; }
  :root:not([data-theme="light"]) .logo-light { display: block; }
}
:root[data-theme="dark"] .logo-dark { display: none; }
:root[data-theme="dark"] .logo-light { display: block; }

.nav-links { display: flex; align-items: center; gap: var(--space-4); }
.nav-links a { color: var(--ink); text-decoration: none; }
.nav-links a:hover { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: var(--space-2); }
.theme-toggle {
  width: 36px; height: 36px; border-radius: var(--radius-sm); border: 1px solid var(--border-strong);
  background: transparent; color: var(--ink); cursor: pointer; font-size: 16px; line-height: 1;
}
.theme-toggle:hover { background: var(--surface); }

@media (max-width: 860px) {
  .site-header { height: auto; position: static; }
  .header-inner { flex-wrap: wrap; padding-block: var(--space-2); row-gap: var(--space-2); }
  .nav-links { order: 3; width: 100%; justify-content: center; gap: var(--space-3); flex-wrap: wrap; }
}

/* ---------- Main / layout ---------- */
main { flex: 1; }
.page { padding-top: var(--space-6); padding-bottom: var(--space-8); }
.page.narrow { max-width: 440px; margin-inline: auto; }
.page h1 { margin-top: 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--band); color: var(--on-band); margin-top: auto; }
.footer-inner {
  padding-block: var(--space-6);
  display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-3);
}
.footer-inner .logo { height: 32px; width: auto; }
.footer-contact { display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; }
.footer-contact a { color: var(--on-band-muted); text-decoration: none; }
.footer-contact a:hover { color: var(--on-band); }
.footer-whatsapp { display: inline-flex; align-items: center; gap: var(--space-2); }
.footer-copy { color: var(--on-band-muted); margin: 0; }

/* ---------- Elaqe (contact) ---------- */
.contact-card {
  margin-top: var(--space-5); display: flex; flex-direction: column; align-items: center;
  gap: var(--space-3); padding: var(--space-6) var(--space-4); text-align: center;
}
.contact-whatsapp-btn { gap: var(--space-2); height: 52px; padding: 0 var(--space-6); font-size: 16px; }
.contact-whatsapp-number { color: var(--ink-muted); margin: 0; }
.contact-email { margin-top: var(--space-4); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: var(--control-height); padding: 0 var(--space-5);
  border-radius: var(--radius-sm); border: 1px solid transparent;
  font-family: var(--font-sans); font-size: 15px; line-height: 20px; font-weight: 700;
  text-decoration: none; cursor: pointer; white-space: nowrap;
}
.btn-sm { height: 40px; padding: 0 var(--space-4); }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--surface); color: var(--ink); }
.btn-onband { background: var(--on-band); color: var(--slate-950); }
.btn-onband:hover { background: var(--on-band); opacity: .9; color: var(--slate-950); }
.btn-ghost-band { background: transparent; color: var(--on-band); border-color: var(--on-band-muted); }
.btn-ghost-band:hover { background: rgba(255,255,255,.08); color: var(--on-band); }
.btn-google {
  display: flex; align-items: center; justify-content: center;
  height: var(--control-height); padding: 0 var(--space-5);
  border-radius: var(--radius-sm); border: 1px solid var(--border-strong);
  color: var(--ink); background: var(--surface-raised); text-decoration: none;
  font-family: var(--font-sans); font-size: 15px; font-weight: 700;
}
.btn-google:hover { background: var(--surface); color: var(--ink); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

/* ---------- Hero ---------- */
.hero { text-align: center; padding: var(--space-8) 0; }
.hero .lead { color: var(--ink-muted); margin: var(--space-3) 0 var(--space-5); }
.hero-actions { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }

/* ---------- Cards / grid ---------- */
.card-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6);
  margin-top: var(--space-6);
}
@media (max-width: 900px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .card-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--surface-raised); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: var(--space-4);
  transition: box-shadow .2s;
}
.card:hover { box-shadow: var(--shadow-raised); }
.card h3, .card h4 { margin-top: 0; }

.features { margin-top: var(--space-6); }

/* ---------- Forms ---------- */
.form { display: flex; flex-direction: column; gap: var(--space-4); max-width: 440px; }
.form label {
  display: flex; flex-direction: column; gap: var(--space-2);
  font-family: var(--font-sans); font-size: 13px; line-height: 20px; font-weight: 500; color: var(--ink);
}
.form input, .form textarea {
  box-sizing: border-box; width: 100%;
  padding: 0 var(--space-4); font-family: var(--font-sans); font-size: 15px; line-height: 22px;
  color: var(--ink); background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
}
.form input { height: var(--control-height); }
.form textarea { padding-top: var(--space-3); padding-bottom: var(--space-3); min-height: 56px; }
.form input::placeholder, .form textarea::placeholder { color: var(--ink-muted); }
.code-input { font-family: var(--font-mono); font-size: 14px; line-height: 22px; background: var(--code-bg); }
.divider { text-align: center; color: var(--ink-muted); margin: var(--space-2) 0; font-size: 13px; }
.btn-row { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* ---------- Tapshiriq sehifesi - evvelki/novbeti naviqasiya (016) ---------- */
.task-head-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; }
.task-pos-nav { display: flex; align-items: center; gap: var(--space-2); white-space: nowrap; }
.task-pos-nav a { font-weight: 600; }
.task-pos-nav-disabled { color: var(--ink-muted); opacity: .4; }
.task-nav-buttons { margin-top: var(--space-6); }

/* ---------- Tapshiriq ishchi sahesi ("Icra et" paneli, 010/013) ---------- */
/* Duymeler basliq setrine (workspace-head) kechirilib ki, textarea
   OZ huceyresinde TEK olsun - beleliklə onun border-box-u ile
   result-panel-in border-box-u HEM yuxari, HEM asagi serhedde
   ust-uste dusur (013; evvelki versiyada duymeler textarea-nin
   altinda eyni huceyrede idi, sag teref isti qeder uzanmirdi). */
.task-workspace {
  display: grid; gap: var(--space-3) var(--space-6); align-items: stretch; margin-top: var(--space-4);
  grid-template-columns: 1fr 1fr;
  grid-template-areas: "sql-label result-label" "sql-input result-panel";
}
.task-workspace .form { max-width: none; }
.task-form-contents { display: contents; }
.workspace-head { grid-area: sql-label; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; }
.workspace-label { margin: 0; }
.area-result-label { grid-area: result-label; }
.area-sql-input { grid-area: sql-input; resize: none; }
.area-result-panel { grid-area: result-panel; }
.result-panel {
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-raised);
  padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2);
  max-height: 360px; overflow: hidden;
}
.result-table-wrap { overflow: auto; flex: 1; min-height: 0; }
.result-table { border-collapse: collapse; width: 100%; font-family: var(--font-mono); font-size: 13px; white-space: nowrap; }
.result-table th {
  position: sticky; top: 0; background: var(--surface-raised); text-align: left;
  padding: var(--space-2) var(--space-3); border-bottom: 1px solid var(--border-strong);
}
.result-table td { padding: var(--space-2) var(--space-3); border-bottom: 1px solid var(--border); }
.result-null { color: var(--ink-muted); font-style: italic; }
@media (min-width: 861px) {
  /* Masaustunde "sql-input"/"result-panel" setri SABIT hundurlukdedir -
     her iki teref bu setre qeder stretch olunur. Netice chox olanda
     (mes. 107 setir) .result-table-wrap daxilde scroll olunur, setrin
     ozu ise deyishmir (.result-panel-in max-height-i artiq lazim deyil,
     setrin ozu onu bu olchude saxlayir). */
  .task-workspace { grid-template-rows: auto 320px; }
  .result-panel { max-height: none; }
}
@media (max-width: 860px) {
  .task-workspace {
    grid-template-columns: 1fr;
    grid-template-areas: "sql-label" "sql-input" "result-label" "result-panel";
  }
  .area-sql-input { resize: vertical; }
}

.flash { padding: var(--space-3) var(--space-4); border-radius: var(--radius-sm); margin-bottom: var(--space-4); }
.flash-error { background: var(--danger-bg); color: var(--danger); }
.session-banner { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.session-banner span { flex: 1; min-width: 200px; }

/* ---------- Dashboard stats ---------- */
.stat-row { display: flex; gap: var(--space-4); margin: var(--space-5) 0; flex-wrap: wrap; }
.stat-tile {
  background: var(--surface-raised); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: var(--space-4) var(--space-5); text-align: center; min-width: 140px;
}
.stat-tile b { display: block; font-family: var(--font-sans); font-size: 36px; line-height: 43px; font-weight: 700; }
.stat-tile span { color: var(--ink-muted); font-size: 13px; }

/* ---------- Tapşırıqlar ---------- */
.topic-accordion {
  margin-bottom: var(--space-3); border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface-raised); overflow: hidden;
}
.topic-accordion summary {
  cursor: pointer; padding: var(--space-3) var(--space-4); list-style: none;
  display: flex; align-items: center; justify-content: space-between; color: var(--ink);
}
.topic-accordion summary::-webkit-details-marker { display: none; }
.topic-accordion summary::after {
  content: "›"; transform: rotate(90deg); display: inline-block; font-size: 20px;
  color: var(--ink-muted); transition: transform .15s; line-height: 1;
}
.topic-accordion[open] summary::after { transform: rotate(-90deg); }
.topic-accordion summary:hover { background: var(--surface); }
.topic-accordion-body { padding: 0 var(--space-4) var(--space-4); border-top: 1px solid var(--border); padding-top: var(--space-3); }
.count-badge {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--code-bg); color: var(--ink-muted); font-weight: 600;
  font-size: 12px; line-height: 1; padding: 3px 9px; border-radius: var(--radius-pill);
  margin-left: var(--space-2); vertical-align: middle;
}
.accordion-head { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; flex: 1; min-width: 0; }
.progress-chips { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.progress-chip {
  display: inline-flex; align-items: center; gap: 3px; font-family: var(--font-sans);
  font-size: 12px; font-weight: 600; line-height: 1; padding: 3px 8px; border-radius: var(--radius-pill);
}
.progress-chip.chip-correct { background: var(--success-bg); color: var(--success); }
.progress-chip.chip-incorrect { background: var(--danger-bg); color: var(--danger); }
.progress-chip.chip-pending { background: var(--warning-bg); color: var(--warning); }
.progress-chip.chip-none { background: var(--code-bg); color: var(--ink-muted); border: 1px dashed var(--border-strong); }
.category-accordion { border: none; margin-top: var(--space-3); }
.category-accordion summary {
  cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-sans); font-size: 13px; line-height: 20px; font-weight: 500;
  color: var(--ink-muted); padding: var(--space-2) 0;
  text-transform: uppercase; letter-spacing: .04em;
}
.category-accordion summary::-webkit-details-marker { display: none; }
.category-accordion summary::after {
  content: "›"; transform: rotate(90deg); display: inline-block; font-size: 16px;
  color: var(--ink-muted); transition: transform .15s; line-height: 1; margin-left: auto;
}
.category-accordion[open] summary::after { transform: rotate(-90deg); }
.category-accordion summary:hover { color: var(--ink); }
.task-list, .vacancy-list, .submission-list { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-3); }
.task-row, .vacancy-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-3) var(--space-4); border: 1px solid var(--border); border-radius: var(--radius-sm);
  text-decoration: none; color: var(--ink); background: var(--surface-raised);
  transition: background-color .3s ease; font-size: 15px;
}
.task-row:hover { background: var(--surface); }
.task-row-highlight { background: var(--warning-bg); }
.tag {
  background: var(--code-bg); color: var(--accent); padding: 2px var(--space-2);
  border-radius: var(--radius-sm); font-size: 13px; margin-left: var(--space-2);
}
.status-auto_correct { border-left: 3px solid var(--success); }
.status-auto_incorrect { border-left: 3px solid var(--danger); }
.status-pending_review { border-left: 3px solid var(--warning); }
.status-reviewed { border-left: 3px solid var(--accent); }

.status-icon {
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  width: 26px; height: 26px; border-radius: 50%;
  font-size: 14px; font-weight: 700; line-height: 1;
}
.status-icon.icon-auto_correct { background: var(--success-bg); color: var(--success); }
.status-icon.icon-auto_incorrect { background: var(--danger-bg); color: var(--danger); }
.status-icon.icon-pending_review { background: var(--warning-bg); color: var(--warning); }
.status-icon.icon-reviewed { background: var(--code-bg); color: var(--accent); }
.status-icon.icon-none { color: var(--ink-muted); border: 1.5px dashed var(--border-strong); }

/* ---------- SqlFeedback ---------- */
.submission-row { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: var(--space-4); background: var(--surface-raised); }
.submission-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-2); gap: var(--space-2); }
.submission-content {
  background: var(--code-bg); padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
  overflow-x: auto; font-family: var(--font-mono); font-size: 14px; line-height: 22px; color: var(--ink);
  white-space: pre-wrap; margin: 0;
}
.feedback-box { border-radius: var(--radius-md); padding: var(--space-3) var(--space-4); margin-top: var(--space-2); }
.feedback-box.ok { background: var(--success-bg); }
.feedback-box.bad { background: var(--danger-bg); }
.feedback-box.part { background: var(--warning-bg); }
.feedback-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-sans); font-size: 13px; line-height: 20px; font-weight: 700;
  padding: 2px 10px; border-radius: var(--radius-pill); border: 1.5px solid currentColor;
}
.feedback-box.ok .feedback-chip { color: var(--success); }
.feedback-box.bad .feedback-chip { color: var(--danger); }
.feedback-box.part .feedback-chip { color: var(--warning); }
.feedback-box p {
  margin: var(--space-2) 0 0; font-size: 15px; line-height: 25px; color: var(--ink);
  overflow-wrap: break-word;
}
.explain-toggle { margin-top: var(--space-3); }
.explain-detail { margin-top: var(--space-3); max-width: 100%; overflow-x: auto; }
.explain-detail p { font-size: 14px; }
.explain-table { background: var(--surface); border-radius: var(--radius-sm); }
.explain-table td, .explain-table th { white-space: nowrap; max-width: 280px; overflow: hidden; text-overflow: ellipsis; }

/* ---------- Admin ---------- */
.admin-table { width: 100%; border-collapse: collapse; margin-top: var(--space-4); }
.admin-table th, .admin-table td {
  text-align: left; padding: var(--space-3); border-bottom: 1px solid var(--border);
  font-size: 15px; vertical-align: top;
}
.admin-table th { color: var(--ink-muted); font-weight: 600; }
.admin-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.admin-actions form { display: inline; }
.btn-small {
  padding: 5px var(--space-3); font-size: 13px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong); background: var(--surface-raised); color: var(--ink); cursor: pointer;
}
.btn-small:hover { background: var(--surface); }
.btn-small.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-small.btn-danger:hover { background: var(--danger-bg); }

/* ---------- Pagination ---------- */
.pagination { display: flex; align-items: center; justify-content: center; gap: var(--space-4); margin-top: var(--space-6); }
.pagination span[aria-disabled] { opacity: .4; pointer-events: none; }

/* ---------- Util ---------- */
.muted { color: var(--ink-muted); font-size: 15px; }