/* Hallmark · genre: editorial · macrostructure: Stat-Led · theme: custom (defter) · enrichment: Tier-A CSS ruled paper
 * nav: N6 masthead (public) / N3 side-rail (panel) · footer: Ft1 mast-headed
 * pre-emit critique: P4 H4 E4 S5 R4 V4
 */

*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 350;
  line-height: 1.6;
  cursor: var(--cursor-default);
  -webkit-font-smoothing: antialiased;
}
a, button, summary, label[for], select, [role="button"], input[type="checkbox"], input[type="radio"],
input[type="submit"], input[type="file"] { cursor: var(--cursor-pointer); }
input:not([type]), input[type="text"], input[type="email"], input[type="password"], input[type="tel"], input[type="number"],
input[type="date"], input[type="time"], textarea { cursor: text; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  font-style: normal;
  line-height: 1.12;
  letter-spacing: -0.012em;
  margin: 0 0 var(--space-sm);
  overflow-wrap: anywhere;
  min-width: 0;
  text-wrap: balance;
}
h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-md); }
p { margin: 0 0 var(--space-sm); max-width: var(--measure); text-wrap: pretty; }
small, .small { font-size: var(--text-sm); }
.muted { color: var(--color-muted); }
.tnum { font-variant-numeric: tabular-nums; }
strong, b { font-weight: 700; }
img { max-width: 100%; display: block; }
hr { border: 0; border-top: var(--rule-hair) solid var(--color-rule); margin: var(--space-lg) 0; }

a { color: var(--color-accent); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { color: var(--color-accent-hover); text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; border-radius: 2px; }

mark {
  background: linear-gradient(transparent 55%, var(--color-highlight) 55%, var(--color-highlight) 92%, transparent 92%);
  color: inherit;
  padding: 0 0.1em;
}

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* ------------------------------------------------------------------ defter zemini */
.ruled {
  /* Kırmızı çift kenar çizgisi, içerik sütununun sol kenarıyla hizalı. */
  --margin-x: calc(50% - min(50% - var(--page-gutter), 38rem) + 0.75rem);
  background-color: var(--color-surface);
  background-image:
    linear-gradient(90deg,
      transparent var(--margin-x), var(--color-margin) var(--margin-x),
      var(--color-margin) calc(var(--margin-x) + 2px), transparent calc(var(--margin-x) + 2px),
      transparent calc(var(--margin-x) + 5px), var(--color-margin) calc(var(--margin-x) + 5px),
      var(--color-margin) calc(var(--margin-x) + 6px), transparent calc(var(--margin-x) + 6px)),
    repeating-linear-gradient(to bottom, transparent 0, transparent calc(var(--ruled) - 1px), var(--color-ruled-line) calc(var(--ruled) - 1px), var(--color-ruled-line) var(--ruled));
}
@media (max-width: 40rem) { .ruled { --margin-x: 0.5rem; } }

/* ------------------------------------------------------------------ düzen */
.wrap { width: min(100% - 2 * var(--page-gutter), 76rem); margin-inline: auto; }
.wrap-narrow { width: min(100% - 2 * var(--page-gutter), 44rem); margin-inline: auto; }
.stack > * + * { margin-top: var(--space-md); }
.stack-sm > * + * { margin-top: var(--space-xs); }
.row { display: flex; flex-wrap: wrap; gap: var(--space-xs); align-items: center; }
.row-between { display: flex; flex-wrap: wrap; gap: var(--space-sm); align-items: baseline; justify-content: space-between; }
.grid-2 { display: grid; gap: var(--space-lg); grid-template-columns: minmax(0, 1fr); align-items: start; }
@media (min-width: 60rem) {
  .grid-2 { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); }
  .grid-2.even { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.section { padding-block: var(--space-2xl); }
.section + .section { border-top: var(--rule-hair) solid var(--color-rule); }

/* ------------------------------------------------------------------ masthead (N6) */
.mast { padding: var(--space-sm) var(--page-gutter) 0; background: var(--color-paper); }
/* büyük logo ortada, menü altında, giriş sağda */
.mast-bar {
  display: grid; align-items: center; gap: var(--space-xs) var(--space-lg); padding-bottom: var(--space-xs);
  grid-template-columns: 1fr auto 1fr; grid-template-areas: ". logo auth" "nav nav nav";
}
.mast-logo { display: inline-block; grid-area: logo; line-height: 0; }
.mast-logo img { height: clamp(2.6rem, 4.5vw, 3.75rem); width: auto; }
.mast-auth { grid-area: auth; justify-self: end; display: flex; align-items: center; gap: var(--space-sm); font-size: var(--text-sm); }
.mast-nav { grid-area: nav; }
.mast-nav ul {
  display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-2xs) var(--space-lg);
  list-style: none; margin: 0; padding: 0;
}
.mast-nav a {
  color: var(--color-ink); text-decoration: none; font-family: var(--font-display); font-size: var(--text-md);
  white-space: nowrap; padding-block: var(--space-3xs); border-bottom: 2px solid transparent;
  transition: border-color var(--dur-short) var(--ease-out);
}
.mast-nav a:hover, .mast-nav a.is-active { border-bottom-color: var(--color-brand); }
.mast-rule {
  border: 0; margin: 0; height: 5px;
  border-top: var(--rule-hair) solid var(--color-ink); border-bottom: var(--rule-hair) solid var(--color-ink);
}

@media (max-width: 48rem) {
  .mast-bar { grid-template-columns: auto 1fr; grid-template-areas: "logo auth" "nav nav"; }
  .mast-logo img { height: 2.3rem; }
  .mast-nav ul { justify-content: flex-start; gap: var(--space-2xs) var(--space-md); }
  .mast-nav a { font-size: var(--text-base); }
}

/* ------------------------------------------------------------------ butonlar */
.btn {
  --btn-bg: var(--color-accent); --btn-fg: var(--color-on-accent); --btn-border: var(--color-accent);
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2xs);
  min-height: 2.75rem; padding: 0.55rem 1.15rem;
  background: var(--btn-bg); color: var(--btn-fg); border: 1.5px solid var(--btn-border); border-radius: var(--radius-sm);
  font-family: var(--font-display); font-size: var(--text-base); font-weight: 600; line-height: 1.1;
  text-decoration: none; white-space: nowrap;
  transition: background-color var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out),
              border-color var(--dur-micro) var(--ease-out), color var(--dur-micro) var(--ease-out);
}
.btn:hover { --btn-bg: var(--color-accent-hover); --btn-border: var(--color-accent-hover); color: var(--btn-fg); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.45; pointer-events: none; }
.btn[data-state="loading"] { pointer-events: none; opacity: 0.8; }
.btn[data-state="loading"]::after {
  content: ""; width: 0.9em; height: 0.9em; border-radius: 50%;
  border: 2px solid currentColor; border-right-color: transparent; animation: spin 700ms linear infinite;
}
.btn-outline { --btn-bg: transparent; --btn-fg: var(--color-ink); --btn-border: var(--color-ink); }
.btn-outline:hover { --btn-bg: var(--color-ink); --btn-fg: var(--color-paper); --btn-border: var(--color-ink); }
.btn-quiet { --btn-bg: transparent; --btn-fg: var(--color-accent); --btn-border: transparent; padding-inline: 0.5rem; }
.btn-quiet:hover { --btn-bg: var(--color-accent-soft); --btn-fg: var(--color-accent-hover); --btn-border: transparent; }
.btn-danger { --btn-bg: transparent; --btn-fg: var(--color-danger); --btn-border: var(--color-danger); }
.btn-danger:hover { --btn-bg: var(--color-danger); --btn-fg: var(--color-on-accent); --btn-border: var(--color-danger); }
.btn-sm { min-height: 2.1rem; padding: 0.3rem 0.75rem; font-size: var(--text-sm); }
.btn-block { width: 100%; }
@media (pointer: coarse) { .btn { min-height: 3rem; } }
@keyframes spin { to { transform: rotate(360deg); } }

.link-arrow { font-family: var(--font-display); font-weight: 600; text-decoration: none; white-space: nowrap; }
.link-arrow::after { content: " →"; display: inline-block; transition: transform var(--dur-short) var(--ease-out); }
.link-arrow:hover::after { transform: translateX(3px); }

/* ------------------------------------------------------------------ formlar */
.field { display: grid; gap: var(--space-3xs); }
.field + .field, .field + .field-row, .field-row + .field { margin-top: var(--space-sm); }
.field-row { display: grid; gap: var(--space-sm); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 40rem) { .field-row { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
label, .label { font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); }
.help { font-size: var(--text-xs); color: var(--color-muted); margin: 0; }
input:not([type]), input[type="text"], input[type="email"], input[type="password"], input[type="tel"], input[type="number"],
input[type="date"], input[type="time"], input[type="file"], select, textarea {
  width: 100%; min-height: 2.75rem; padding: 0.55rem 0.75rem;
  font: inherit; font-size: var(--text-base); color: var(--color-ink);
  background: var(--color-surface); border: 1px solid var(--color-rule-strong); border-radius: var(--radius-sm);
  transition: border-color var(--dur-micro) var(--ease-out), box-shadow var(--dur-micro) var(--ease-out);
}
input:hover, select:hover, textarea:hover { border-color: var(--color-neutral); }
input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px var(--color-accent-soft);
}
input:disabled, select:disabled, textarea:disabled { background: var(--color-paper-2); color: var(--color-neutral); }
input[aria-invalid="true"] { border-color: var(--color-danger); }
textarea { min-height: 7rem; resize: vertical; line-height: 1.5; }
.check { display: flex; gap: var(--space-2xs); align-items: flex-start; font-family: var(--font-body); font-weight: 350; font-size: var(--text-sm); }
.check input { margin-top: 0.3em; accent-color: var(--color-accent); width: 1.05rem; height: 1.05rem; flex: none; }
fieldset { border: 0; padding: 0; margin: 0; }
legend { font-family: var(--font-display); font-weight: 600; margin-bottom: var(--space-2xs); padding: 0; }

.choice-grid { display: grid; gap: var(--space-xs); grid-template-columns: repeat(auto-fill, minmax(min(100%, 13rem), 1fr)); }
.choice { position: relative; display: block; }
.choice input { position: absolute; opacity: 0; inset: 0; }
.choice > span {
  display: block; height: 100%; padding: var(--space-sm); border: 1.5px solid var(--color-rule-strong);
  border-radius: var(--radius-md); background: var(--color-surface); font-weight: 350;
  transition: border-color var(--dur-micro) var(--ease-out), background-color var(--dur-micro) var(--ease-out);
}
.choice input:checked + span { border-color: var(--color-accent); background: var(--color-accent-soft); }
.choice input:focus-visible + span { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.choice:hover > span { border-color: var(--color-neutral); }

/* ------------------------------------------------------------------ bildirim şeritleri */
.flashes { display: grid; gap: var(--space-2xs); margin-block: var(--space-sm); }
.flash {
  display: flex; gap: var(--space-2xs); align-items: baseline;
  padding: var(--space-xs) var(--space-sm); border-radius: var(--radius-sm); font-size: var(--text-sm);
  background: var(--color-info-soft); color: var(--color-info); border: 1px solid currentColor;
  animation: flash-in var(--dur-long) var(--ease-out);
}
.flash p { margin: 0; color: var(--color-ink); }
.flash::before { content: "i"; font-family: var(--font-display); font-weight: 700; }
.flash-success { background: var(--color-success-soft); color: var(--color-success); }
.flash-success::before { content: "✓"; }
.flash-error { background: var(--color-danger-soft); color: var(--color-danger); }
.flash-error::before { content: "!"; }
@keyframes flash-in { from { opacity: 0; transform: translateY(-4px); } }

.note {
  padding: var(--space-sm) 0; border-block: var(--rule-hair) solid var(--color-ink);
  margin-block: var(--space-md);
}
.note > :last-child { margin-bottom: 0; }
.note-warn { border-top: var(--rule-thick) solid var(--color-danger); }

/* Yapışkan not (post-it): public sayfalardaki yan bilgiler */
.memo {
  position: relative; padding: calc(var(--space-lg) + 0.5rem) var(--space-md) var(--space-lg);
  background:
    linear-gradient(to bottom, var(--color-memo-glue), var(--color-memo-glue) 1.6rem, transparent 2.1rem),
    linear-gradient(170deg, var(--color-memo) 60%, oklch(92.5% 0.1 96) 100%);
  color: var(--color-ink);
  box-shadow: 0 1px 1px oklch(40% 0.06 80 / 0.2), 0 6px 10px -6px oklch(35% 0.06 75 / 0.35);
  transform: rotate(-1.4deg);
}
.memo::after { /* kalkık alt köşelerin yere düşen gölgesi (transform yüzünden notun altına konamıyor, dışına konur) */
  content: ""; position: absolute; top: 100%; left: 2%; right: 2%; height: 0.9rem; pointer-events: none;
  background:
    radial-gradient(ellipse 50% 100% at 12% 0, oklch(30% 0.05 70 / 0.32), transparent 75%),
    radial-gradient(ellipse 50% 100% at 88% 0, oklch(30% 0.05 70 / 0.32), transparent 75%),
    radial-gradient(ellipse 60% 60% at 50% 0, oklch(30% 0.05 70 / 0.12), transparent 80%);
  filter: blur(2px);
}
.memo::before { /* yapışkan şeridin alt kenarı */
  content: ""; position: absolute; top: 1.6rem; left: 0; right: 0; height: 1px;
  background: linear-gradient(to right, transparent, oklch(80% 0.1 90 / 0.5) 15%, oklch(80% 0.1 90 / 0.5) 85%, transparent);
}
.memo:nth-child(even) { transform: rotate(1.1deg); }
.memo h3 { font-size: var(--text-lg); margin-bottom: var(--space-2xs); }
.memo p { color: oklch(30% 0.02 60); }
.memo > :last-child { margin-bottom: 0; }
.memo .memo-foot { font-size: var(--text-sm); color: oklch(42% 0.04 70); border-top: var(--rule-hair) dashed var(--color-memo-edge); padding-top: var(--space-2xs); }

/* ------------------------------------------------------------------ yaprak (sheet) & listeler */
.sheet {
  background: var(--color-surface); border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-md); padding: var(--space-md); box-shadow: var(--shadow-paper);
}
.sheet > :last-child { margin-bottom: 0; }
.sheet-head { display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-sm); flex-wrap: wrap; margin-bottom: var(--space-sm); }
.sheet-head h2, .sheet-head h3 { margin: 0; }

.list { list-style: none; margin: 0; padding: 0; }
.list > li { padding-block: var(--space-sm); border-top: var(--rule-hair) solid var(--color-rule); }
.list > li:first-child { border-top: 0; padding-top: 0; }
.list > li:last-child { padding-bottom: 0; }
.empty { color: var(--color-muted); font-size: var(--text-sm); padding-block: var(--space-sm); margin: 0; }

.lesson-row { position: relative; display: grid; gap: var(--space-3xs) var(--space-sm); grid-template-columns: 3.25rem minmax(0, 1fr) auto; align-items: baseline; }
.lesson-date { display: grid; justify-items: start; line-height: 1.1; }
.lesson-date .d { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 400; line-height: 1; letter-spacing: -0.03em; }
.lesson-date .m { font-size: var(--text-xs); color: var(--color-muted); }
.lesson-main { min-width: 0; }
.lesson-main .title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-md); margin: 0; }
.lesson-main .meta { font-size: var(--text-sm); color: var(--color-muted); margin: 0; }
/* Satırın tamamı tek bağlantı: başlıktaki a, satırı kaplar */
.stretch::after { content: ""; position: absolute; inset: 0; }
.stretch { color: inherit; text-decoration: none; }
.stretch:hover, .stretch:focus-visible { color: var(--color-accent); }
.trail { font-size: var(--text-sm); color: var(--color-muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
a.trail { position: relative; z-index: 1; color: var(--color-accent); font-weight: 600; text-decoration: underline; text-underline-offset: 0.2em; }
@media (max-width: 40rem) {
  .lesson-row { grid-template-columns: 2.75rem minmax(0, 1fr); }
  .lesson-row .trail { grid-column: 2; }
}

/* Ödev satırı: durum yazıyla anlatılır, solda defter kutucuğu */
.hw-row { position: relative; display: grid; grid-template-columns: 1.1rem minmax(0, 1fr) auto; gap: var(--space-sm); align-items: baseline; }
.hw-main { min-width: 0; }
.hw-main .title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-md); }
.hw-main .meta { font-size: var(--text-sm); color: var(--color-muted); margin: 0; }
.hw-mark { align-self: start; margin-top: 0.3em; width: 1rem; height: 1rem; border: 1.5px solid var(--color-ink); border-radius: 2px; position: relative; }
.hw-submitted .hw-mark::after, .hw-reviewed .hw-mark::after {
  content: ""; position: absolute; left: 0.28rem; top: 0.04rem; width: 0.3rem; height: 0.58rem;
  border: solid var(--color-ink); border-width: 0 2px 2px 0; transform: rotate(40deg);
}
.hw-reviewed .hw-mark { background: var(--color-ink); }
.hw-reviewed .hw-mark::after { border-color: var(--color-surface); }
.hw-overdue .hw-mark { border-color: var(--color-danger); }
.hw-overdue .trail { color: var(--color-danger); font-weight: 600; }
.hw-open .trail { color: var(--color-ink); }
@media (max-width: 40rem) { .hw-row .trail { grid-column: 2; } }

.badge { font-family: var(--font-display); font-weight: 600; color: var(--color-muted); white-space: nowrap; }
.badge-accent { color: var(--color-accent); }
.badge-success { color: var(--color-success); }
.badge-warn { color: var(--color-warning); }
.badge-danger { color: var(--color-danger); }
.badge-info { color: var(--color-info); }

.chips { display: flex; flex-wrap: wrap; gap: var(--space-3xs) var(--space-2xs); margin: 0; padding: 0; list-style: none; }
.chip {
  font-size: var(--text-xs); padding: 0.15rem 0.6rem; border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: 999px; color: var(--color-muted); background: var(--color-surface); white-space: nowrap; text-decoration: none;
}
a.chip:hover, .chip.is-active { border-color: var(--color-accent); color: var(--color-accent); background: var(--color-accent-soft); }

/* Ders × kategori seçimi (öğretmen başvurusu, admin) */
.subject-picker { display: flex; flex-direction: column; border-top: var(--rule-hair) solid var(--color-rule-strong); }
.subject-row { display: grid; grid-template-columns: 7.5rem 1fr; gap: var(--space-2xs) var(--space-sm); align-items: center; padding-block: var(--space-2xs); border-bottom: var(--rule-hair) solid var(--color-rule-strong); }
.subject-row .chips { gap: var(--space-2xs) var(--space-sm); }
.subject-branch { font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); }
@media (max-width: 30rem) { .subject-row { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------------ tablolar */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.data { width: 100%; border-collapse: collapse; font-size: var(--text-sm); font-variant-numeric: tabular-nums; }
table.data th {
  text-align: left; font-family: var(--font-display); font-weight: 600; color: var(--color-muted);
  font-size: var(--text-xs); letter-spacing: 0.02em; padding: var(--space-2xs) var(--space-xs);
  border-bottom: var(--rule-hair) solid var(--color-ink); white-space: nowrap;
}
table.data td { padding: var(--space-xs); border-bottom: var(--rule-hair) solid var(--color-rule); vertical-align: top; }
table.data tbody th { border-bottom-color: var(--color-rule); vertical-align: top; width: 1%; }
table.data tr:hover td { background: var(--color-paper-2); }
table.data .num { text-align: right; }

/* ------------------------------------------------------------------ bölüm (kartsız) ve döküm */
.block { margin-bottom: var(--space-xl); }
.block-head { display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-sm); flex-wrap: wrap; padding-bottom: var(--space-2xs); border-bottom: var(--rule-hair) solid var(--color-ink); margin-bottom: var(--space-sm); }
.block-head h2 { font-size: var(--text-lg); margin: 0; }
.more { font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); color: var(--color-ink); text-underline-offset: 0.2em; white-space: nowrap; }
.more:hover { color: var(--color-accent); }
.ledger { margin: 0; display: grid; gap: var(--space-2xs); }
.ledger > div { display: flex; align-items: baseline; gap: var(--space-2xs); }
.ledger dt { color: var(--color-muted); }
.ledger dd { margin: 0; font-family: var(--font-display); font-weight: 600; font-variant-numeric: tabular-nums; }
.ledger .lead { flex: 1; min-width: 1rem; border-bottom: 1px dotted var(--color-neutral); }

/* ------------------------------------------------------------------ büyük rakamlar */
.figure {
  font-family: var(--font-display); font-weight: 300; font-variant-numeric: tabular-nums; line-height: 0.92;
  letter-spacing: -0.035em; margin: 0;
}
.stat { display: grid; gap: var(--space-3xs); }
.stat .figure { font-size: var(--text-3xl); font-weight: 400; }
.stat .label { font-weight: 400; color: var(--color-muted); font-size: var(--text-sm); }
.stats { display: grid; gap: var(--space-md); grid-template-columns: repeat(auto-fit, minmax(min(100%, 10rem), 1fr)); }

/* ------------------------------------------------------------------ public: hero (Stat-Led) */
.hero { padding-block: var(--space-xl) var(--space-2xl); --ruled: 2.25rem; }
.hero-inner { display: grid; gap: var(--space-lg); align-items: end; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 60rem) { .hero-inner { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: var(--space-2xl); } }
.hero .figure {
  font-family: var(--font-figure); font-optical-sizing: auto; font-weight: 300; letter-spacing: -0.015em;
  font-variant-numeric: lining-nums tabular-nums; font-size: var(--text-display); color: var(--color-ink);
}
.hero .figure .unit { font-size: 0.42em; letter-spacing: 0; font-weight: 400; margin-left: 0.08em; }
.hero-figure-caption { font-family: var(--font-display); font-size: var(--text-md); color: var(--color-muted); margin-top: var(--space-2xs); }
.hero h1 { font-size: var(--text-4xl); font-weight: 600; margin: 0 0 var(--space-sm); max-width: 16ch; }
.hero .lede { font-size: var(--text-md); color: var(--color-muted); max-width: 42ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-top: var(--space-md); }
@media (min-width: 40rem) { .hero-copy { padding-left: var(--space-lg); } }

.fact-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr)); border-top: var(--rule-hair) solid var(--color-ink); }
.fact { padding: var(--space-md) var(--space-md) var(--space-md) 0; }
.fact + .fact { border-left: var(--rule-hair) solid var(--color-rule); padding-left: var(--space-md); }
@media (max-width: 40rem) { .fact + .fact { border-left: 0; border-top: var(--rule-hair) solid var(--color-rule); padding-left: 0; } }
.fact .figure { font-size: var(--text-3xl); font-weight: 400; }
.fact p { margin: var(--space-2xs) 0 0; color: var(--color-muted); font-size: var(--text-sm); }

/* Fiyat tablosu */
.price-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.price-table th, .price-table td { padding: var(--space-sm) var(--space-xs); border-bottom: var(--rule-hair) solid var(--color-rule); text-align: left; vertical-align: baseline; }
.price-table thead th { font-family: var(--font-display); font-size: var(--text-xs); color: var(--color-muted); font-weight: 600; border-bottom-color: var(--color-ink); }
.price-table .plan { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600; }
.price-table .plan .name { white-space: nowrap; }
.price-table .big { font-family: var(--font-figure); font-size: var(--text-xl); font-weight: 500; white-space: nowrap; font-variant-numeric: lining-nums tabular-nums; letter-spacing: -0.01em; }
.price-table .big del { font-weight: 400; }
.price-table .per, .price-table .vat { font-family: var(--font-figure); font-variant-numeric: lining-nums tabular-nums; }
.price-table .per { font-size: var(--text-md); }
.price-table .num { text-align: right; white-space: nowrap; }
.price-table .count { white-space: nowrap; }
.price-table tr.is-featured td { background: var(--color-accent-soft); }
.price-table del { color: var(--color-neutral); }
/* Dar alanda (telefonda ya da iki sütunlu düzende dar sütunda) satırlar kart olur. Pencereye değil
   tablonun kapsayıcısına bakar; böylece ana sayfada yanındaki nota taşmaz. */
.price-table-wrap { container-type: inline-size; }
@container (max-width: 43rem) {
  .price-table thead { display: none; }
  .price-table tr {
    display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-3xs) var(--space-sm); align-items: baseline;
    padding: var(--space-sm); border-bottom: var(--rule-hair) solid var(--color-rule);
  }
  .price-table tr.is-featured { background: var(--color-accent-soft); border-radius: var(--radius-sm); }
  .price-table tr.is-featured td { background: transparent; }
  .price-table td { border: 0; padding: 0; }
  .price-table td.plan { grid-column: 1; grid-row: 1; }
  .price-table td.big { grid-column: 2; grid-row: 1; }
  .price-table td.big del { display: none; }
  .price-table td.plan .badge { display: table; margin-top: var(--space-3xs); }
  .price-table td.count { grid-column: 1; grid-row: 2; color: var(--color-muted); }
  .price-table td.per { grid-column: 2; grid-row: 2; }
  .price-table td.vat { grid-column: 1 / -1; grid-row: 3; text-align: left; font-size: var(--text-sm); }
  .price-table td.action { grid-column: 1 / -1; grid-row: 4; margin-top: var(--space-2xs); text-align: left; }
  .price-table td[data-label]::before { content: attr(data-label) " "; color: var(--color-muted); font-size: var(--text-xs); font-family: var(--font-body); }
}
@supports not (container-type: inline-size) { /* kapsayıcı sorgusu bilmeyen eski tarayıcılar */
  @media (max-width: 48rem) {
    .price-table thead { display: none; }
    .price-table tr {
      display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-3xs) var(--space-sm); align-items: baseline;
      padding: var(--space-sm); border-bottom: var(--rule-hair) solid var(--color-rule);
    }
    .price-table tr.is-featured { background: var(--color-accent-soft); border-radius: var(--radius-sm); }
    .price-table tr.is-featured td { background: transparent; }
    .price-table td { border: 0; padding: 0; }
    .price-table td.plan { grid-column: 1; grid-row: 1; }
    .price-table td.big { grid-column: 2; grid-row: 1; }
    .price-table td.big del { display: none; }
    .price-table td.plan .badge { display: table; margin-top: var(--space-3xs); }
    .price-table td.count { grid-column: 1; grid-row: 2; color: var(--color-muted); }
    .price-table td.per { grid-column: 2; grid-row: 2; }
    .price-table td.vat { grid-column: 1 / -1; grid-row: 3; text-align: left; font-size: var(--text-sm); }
    .price-table td.action { grid-column: 1 / -1; grid-row: 4; margin-top: var(--space-2xs); text-align: left; }
    .price-table td[data-label]::before { content: attr(data-label) " "; color: var(--color-muted); font-size: var(--text-xs); font-family: var(--font-body); }
  }
}

/* Kurallar listesi (numaralı) */
.rules { counter-reset: rule; list-style: none; padding: 0; margin: 0; display: grid; gap: 0; }
.rules li { counter-increment: rule; display: grid; grid-template-columns: 3rem minmax(0, 1fr); gap: var(--space-sm); padding-block: var(--space-md); border-top: var(--rule-hair) solid var(--color-rule); }
.rules li::before { content: counter(rule); font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 300; color: var(--color-brand); line-height: 1; }
.rules h3 { margin-bottom: var(--space-3xs); }
.rules p { margin: 0; color: var(--color-muted); }

/* "Nasıl çalışır": masaüstünde 6 adım tek ekrana sığsın diye sıkı, iki sütunlu düzen */
.rules-compact li { grid-template-columns: 2rem minmax(0, 1fr); gap: var(--space-xs); padding-block: var(--space-sm); }
.rules-compact li::before { font-size: var(--text-xl); }
.rules-compact h3 { font-size: var(--text-md); }
.rules-compact p { font-size: var(--text-sm); line-height: 1.5; }
.how-page .page-head { padding-block: var(--space-md) var(--space-sm); }
.how-page .page-head h1 { font-size: var(--text-3xl); }
.how-page .memo h3 { font-size: var(--text-xl); }
.how-page .section { padding-block: var(--space-md); }
@media (min-width: 60rem) {
  .how-grid { grid-template-columns: minmax(0, 2.4fr) minmax(0, 1fr); }
  .rules-compact { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(3, auto); grid-auto-flow: column; column-gap: var(--space-lg); }
}

/* Öğretmen listesi */
.teacher-list { list-style: none; margin: 0; padding: 0; }
.teacher-item { display: grid; gap: var(--space-sm) var(--space-md); grid-template-columns: 5rem minmax(0, 1fr); padding-block: var(--space-md); border-top: var(--rule-hair) solid var(--color-rule); }
@media (min-width: 60rem) { .teacher-item { grid-template-columns: 6rem minmax(0, 1fr) 15rem; align-items: start; } }
.teacher-item h3 { margin: 0; }
.teacher-item h3 a { color: var(--color-ink); text-decoration: none; }
.teacher-item h3 a:hover { color: var(--color-accent); }
.teacher-item .side { grid-column: 2; display: grid; gap: var(--space-2xs); justify-items: start; }
@media (min-width: 60rem) { .teacher-item .side { grid-column: 3; justify-items: end; text-align: right; } }
.avatar {
  width: 100%; aspect-ratio: 1; border-radius: 50%; object-fit: cover; background: var(--color-paper-3);
  display: grid; place-items: center; font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-accent);
  border: var(--rule-hair) solid var(--color-rule-strong);
}
.avatar-sm { width: 2.25rem; font-size: var(--text-sm); flex: none; }
.rating { font-family: var(--font-display); font-size: var(--text-sm); white-space: nowrap; }
.rating .star { color: var(--color-brand); }

.filters { display: grid; gap: var(--space-xs); padding-block: var(--space-md); }

/* ------------------------------------------------------------------ takvim */
.week { display: grid; grid-template-columns: repeat(7, minmax(7.5rem, 1fr)); gap: 0; border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-md); background: var(--color-surface); min-width: 52rem; }
.week-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: var(--space-2xs); }
.week-day { border-left: var(--rule-hair) solid var(--color-rule); min-height: 12rem; }
.week-day:first-child { border-left: 0; }
.week-day header { padding: var(--space-2xs) var(--space-xs); border-bottom: var(--rule-hair) solid var(--color-rule); background: var(--color-paper-2); }
.week-day header .dname { font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); display: block; }
.week-day header .ddate { font-size: var(--text-xs); color: var(--color-muted); }
.week-day.is-today header { background: var(--color-accent-soft); }
.week-day.is-today header .dname { color: var(--color-accent); }
.week-day ol { list-style: none; margin: 0; padding: var(--space-2xs); display: grid; gap: var(--space-3xs); }
.slot {
  display: block; width: 100%; text-align: center; padding: 0.4rem 0.25rem; border-radius: var(--radius-sm);
  font-family: var(--font-display); font-variant-numeric: tabular-nums; font-size: var(--text-sm); font-weight: 600;
  text-decoration: none; color: var(--color-accent); border: 1px solid var(--color-accent); background: var(--color-surface);
  transition: background-color var(--dur-micro) var(--ease-out), color var(--dur-micro) var(--ease-out);
}
a.slot:hover, button.slot:hover { background: var(--color-accent); color: var(--color-on-accent); }
.slot.is-taken { color: var(--color-neutral); border-color: var(--color-rule); background: var(--color-paper-2); text-decoration: line-through; }
.slot.is-selected { background: var(--color-accent); color: var(--color-on-accent); }
.week-day .none { font-size: var(--text-xs); color: var(--color-neutral); padding: var(--space-2xs); text-align: center; }
.week-nav { display: flex; justify-content: space-between; align-items: center; gap: var(--space-sm); margin-bottom: var(--space-sm); }

/* Müsaitlik editörü */
.avail { border-collapse: separate; border-spacing: 3px; font-variant-numeric: tabular-nums; min-width: 40rem; width: 100%; user-select: none; }
.avail th { font-family: var(--font-display); font-size: var(--text-xs); font-weight: 600; color: var(--color-muted); padding: 0 var(--space-2xs); }
.avail td { padding: 0; }
.avail label { display: block; }
.avail input { position: absolute; opacity: 0; pointer-events: none; }
.avail span {
  display: block; width: 100%; min-width: 3.5rem; height: 2rem; border-radius: var(--radius-sm);
  background: var(--color-paper-2); border: 1px solid var(--color-rule);
  transition: background-color var(--dur-micro) var(--ease-out);
}
.avail label:hover span { border-color: var(--color-accent); }
.avail input:checked + span { background: var(--color-accent); border-color: var(--color-accent); }
.avail input:focus-visible + span { outline: 2px solid var(--color-focus); outline-offset: 1px; }

/* Puan seçimi */
.stars { display: inline-flex; flex-direction: row-reverse; gap: 2px; }
.stars input { position: absolute; opacity: 0; }
.stars label { font-size: 2rem; line-height: 1; color: var(--color-rule-strong); transition: color var(--dur-micro) var(--ease-out); padding: 0 2px; }
.stars input:checked ~ label, .stars label:hover, .stars label:hover ~ label { color: var(--color-brand); }
.stars input:focus-visible + label { outline: 2px solid var(--color-focus); border-radius: 2px; }

/* ------------------------------------------------------------------ panel düzeni (N3 side-rail) */
.app { display: grid; grid-template-columns: minmax(0, 1fr); min-height: 100dvh; }
@media (min-width: 60rem) { .app { grid-template-columns: 16rem minmax(0, 1fr); } }
.rail {
  background: var(--color-paper-2); border-right: var(--rule-hair) solid var(--color-rule);
  padding: var(--space-md) var(--space-sm); display: flex; flex-direction: column; gap: var(--space-md);
}
@media (min-width: 60rem) { .rail { position: sticky; top: 0; height: 100dvh; overflow-y: auto; } }
.rail-brand img { height: 1.8rem; width: auto; }
.rail-who { display: flex; gap: var(--space-2xs); align-items: center; font-size: var(--text-sm); }
.rail-who .name { font-family: var(--font-display); font-weight: 600; display: block; line-height: 1.2; }
.rail nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.rail nav a {
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-2xs);
  padding: 0.5rem 0.75rem; border-radius: var(--radius-sm); color: var(--color-ink); text-decoration: none;
  font-family: var(--font-display); font-size: var(--text-base); white-space: nowrap;
  transition: background-color var(--dur-micro) var(--ease-out);
}
.rail nav a:hover { background: var(--color-paper-3); }
.rail nav a.is-active { background: var(--color-surface); box-shadow: 0 0 0 1px var(--color-rule); }
.rail .count { font-size: var(--text-xs); background: var(--color-accent); color: var(--color-on-accent); border-radius: 999px; padding: 0 0.45rem; font-weight: 700; }
.rail-foot { margin-top: auto; display: grid; gap: var(--space-2xs); font-size: var(--text-sm); }
.rail-foot form { margin: 0; }
.rail-toggle { display: none; }
@media (max-width: 59.99rem) {
  .rail { position: sticky; top: 0; z-index: 20; flex-direction: row; align-items: center; justify-content: space-between; padding: var(--space-2xs) var(--space-sm); gap: var(--space-sm); border-right: 0; border-bottom: var(--rule-hair) solid var(--color-rule); }
  .rail-brand img { height: 1.6rem; }
  .rail-who, .rail-foot { display: none; }
  .rail details { position: static; }
  .rail summary { list-style: none; display: inline-flex; align-items: center; gap: var(--space-2xs); font-family: var(--font-display); font-weight: 600; padding: 0.4rem 0.75rem; border: 1px solid var(--color-rule-strong); border-radius: var(--radius-sm); background: var(--color-surface); }
  .rail summary::-webkit-details-marker { display: none; }
  .rail details[open] nav { position: absolute; left: 0; right: 0; top: 100%; background: var(--color-paper-2); border-bottom: var(--rule-hair) solid var(--color-rule); padding: var(--space-sm); box-shadow: var(--shadow-paper); }
  .rail details:not([open]) nav { display: none; }
  .rail details nav .mobile-extra { display: grid; gap: var(--space-2xs); margin-top: var(--space-sm); padding-top: var(--space-sm); border-top: var(--rule-hair) solid var(--color-rule); }
}
@media (min-width: 60rem) {
  .rail details > summary { display: none; }
  .rail details nav .mobile-extra { display: none; }
}
.main { padding: var(--space-lg) var(--page-gutter) var(--space-2xl); min-width: 0; }
.main-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: var(--space-sm); margin-bottom: var(--space-lg); padding-bottom: var(--space-sm); border-bottom: var(--rule-hair) solid var(--color-ink); }
.main-head h1 { font-size: var(--text-3xl); margin: 0; }
.main-head p { margin: var(--space-3xs) 0 0; color: var(--color-muted); }
/* Detay sayfalarının başında bir üst sayfaya dönüş */
.back { display: inline-block; font-family: var(--font-display); font-weight: 600; font-size: var(--text-sm); color: var(--color-muted); text-decoration: none; margin-bottom: var(--space-2xs); }
.back::before { content: "←"; display: inline-block; margin-right: 0.35em; transition: transform var(--dur-short) var(--ease-out); }
.back:hover, .back:focus-visible { color: var(--color-accent); }
.back:hover::before { transform: translateX(-3px); }
.panel-grid { display: grid; gap: var(--space-lg); grid-template-columns: minmax(0, 1fr); align-items: start; }
@media (min-width: 72rem) { .panel-grid { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); } }
.credit-box { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-sm); flex-wrap: wrap; }
.credit-box .figure { font-size: clamp(3rem, 6vw, 4.5rem); color: var(--color-ink); }
.credit-box .figure small { font-size: var(--text-md); letter-spacing: 0; color: var(--color-muted); font-weight: 400; margin-left: var(--space-3xs); }

/* Ders odası */
.room { position: relative; width: 100%; height: calc(100dvh - 9rem); min-height: 28rem; border-radius: var(--radius-md); overflow: hidden; border: var(--rule-hair) solid var(--color-rule-strong); background: var(--color-ink); }
.room iframe { width: 100%; height: 100%; border: 0; }

/* Bildirimler */
.notif { display: grid; grid-template-columns: 0.6rem minmax(0, 1fr) auto; gap: var(--space-sm); align-items: baseline; text-decoration: none; color: inherit; }
.notif .dot { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: transparent; }
.notif.is-unread .dot { background: var(--color-brand); }
.notif .t { font-family: var(--font-display); font-weight: 600; display: block; color: var(--color-ink); }
.notif:hover .t { color: var(--color-accent); }
.notif .b { font-size: var(--text-sm); color: var(--color-muted); }
.notif time { font-size: var(--text-xs); color: var(--color-neutral); white-space: nowrap; }

.push-banner { display: none; }
.push-banner.is-visible { display: flex; }

/* ------------------------------------------------------------------ public içerik */
.page-head { padding-block: var(--space-xl) var(--space-lg); border-bottom: var(--rule-hair) solid var(--color-rule); }
.page-head h1 { margin-bottom: var(--space-2xs); }
.page-head p { font-size: var(--text-md); color: var(--color-muted); margin: 0; }
.prose { max-width: var(--measure); }
.prose h2 { font-size: var(--text-xl); margin-top: var(--space-xl); }
.prose > h2:first-child { margin-top: 0; }
.prose h3 { margin-top: var(--space-lg); }
.prose ul { padding-left: 1.2rem; }
.prose li + li { margin-top: var(--space-3xs); }

.faq details { border-top: var(--rule-hair) solid var(--color-rule); padding-block: var(--space-sm); }
.faq details:last-child { border-bottom: var(--rule-hair) solid var(--color-rule); }
.faq summary { font-family: var(--font-display); font-weight: 600; font-size: var(--text-md); list-style: none; display: flex; justify-content: space-between; gap: var(--space-sm); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--color-brand); font-weight: 400; font-size: var(--text-xl); line-height: 1; transition: transform var(--dur-short) var(--ease-out); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: var(--space-2xs) 0 0; color: var(--color-muted); }

.auth-page { min-height: 100dvh; display: grid; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 60rem) { .auth-page { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); } }
.auth-side { padding: var(--space-xl) var(--page-gutter); display: flex; flex-direction: column; justify-content: space-between; gap: var(--space-xl); --ruled: 2.25rem; }
.auth-side.ruled { --margin-x: 1.25rem; padding-left: calc(1.25rem + var(--space-lg)); }
.auth-side img { height: 2.6rem; width: auto; }
.auth-side .figure { font-size: clamp(3rem, 7vw, 6rem); }
.auth-form { padding: var(--space-xl) var(--page-gutter); display: flex; align-items: center; }
.auth-form > div { width: min(100%, 30rem); margin-inline: auto; }
@media (max-width: 59.99rem) { .auth-side .hide-sm { display: none; } .auth-side { padding-block: var(--space-md); } }
.auth-side:has(.apply-side) { justify-content: flex-start; }
.auth-side:has(.apply-side) > p:last-child { margin-top: auto; }
.apply-steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-md); }
.apply-steps li { display: flex; gap: var(--space-sm); align-items: flex-start; }
.apply-steps strong { font-family: var(--font-display); }
.apply-step-no { flex: none; width: 1.9rem; height: 1.9rem; border-radius: 50%; border: var(--rule-hair) solid var(--color-ink); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); line-height: 1; }

/* ------------------------------------------------------------------ footer (Ft1) */
.foot { margin-top: var(--space-2xl); border-top: var(--rule-hair) solid var(--color-ink); padding-block: var(--space-lg); background: var(--color-paper-2); }
.foot-inner { display: grid; gap: var(--space-md); grid-template-columns: minmax(0, 1fr); align-items: center; }
@media (min-width: 60rem) { .foot-inner { grid-template-columns: auto minmax(0, 1fr) auto; } }
.foot img { height: 1.75rem; width: auto; }
.foot .tagline { margin: 0; color: var(--color-muted); font-size: var(--text-sm); }
.foot .links { display: flex; flex-wrap: wrap; gap: var(--space-2xs) var(--space-md); font-size: var(--text-sm); margin: 0; padding: 0; list-style: none; }
.foot .links a { color: var(--color-muted); white-space: nowrap; }
.foot .links a:hover { color: var(--color-accent); }

/* ------------------------------------------------------------------ hareket */
.reveal { opacity: 0; transform: translateY(8px); animation: reveal var(--dur-long) var(--ease-out) forwards; animation-delay: calc(var(--i, 0) * 70ms); }
@keyframes reveal { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-delay: 0ms !important; transition-duration: 1ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .rail, .mast, .foot, .btn { display: none !important; }
  .app { display: block; }
}

/* Ön görüşme saat seçici: gün başına satır, saatler yan yana */
.slot-days { display: grid; gap: var(--space-sm); }
.slot-day { display: grid; grid-template-columns: 10rem 1fr; gap: var(--space-xs); align-items: start; }
.slot-day .slots { display: flex; flex-wrap: wrap; gap: var(--space-2xs); }
.slot-day .slot { width: auto; min-width: 4.25rem; cursor: inherit; }
@media (max-width: 40rem) { .slot-day { grid-template-columns: 1fr; } }
.trial-line { margin-top: var(--space-sm); font-size: var(--text-sm); color: var(--color-muted); }
.trial-line strong { color: var(--color-ink); }
mark.placeholder { background: var(--color-warning-soft); color: var(--color-ink); padding: 0 0.2em; border-radius: 2px; }