/* Tek başına çalışan öğrencinin ilk programı (onboarding). Uygulamanın paleti: lacivert, beyaz, altın; her zaman açık tema.
   Sınıflar "ob-" önekli ve #screen-onb altında: uygulamanın kendi stilleriyle çakışmaz. */
#screen-onb {
  --bg: #FFFFFF; --sunk: #F6F5F1; --ink: #0F1E45; --muted: #5B6478; --faint: #8A90A2;
  --line: #E7E4DB; --line-strong: #C9C4B4; --gold: #D4AF5F; --gold-ink: #9A7412;
  --tyt: #1B3A6B; --ayt: #9A7412;
  --btn: #0F1E45; --btn-ink: #FFFFFF; --sel: #0F1E45; --sel-ink: #FFFFFF;
  --display: "Familjen Grotesk", "Segoe UI", system-ui, sans-serif;
  --body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
  color-scheme: light; position: fixed; inset: 0; z-index: 50; overflow-y: auto; -webkit-overflow-scrolling: touch;
  background: var(--bg); color: var(--ink); font: 17px/1.55 var(--body); -webkit-font-smoothing: antialiased;
}
#screen-onb * { box-sizing: border-box; }
#screen-onb button, #screen-onb input, #screen-onb select { font: inherit; color: inherit; }
#screen-onb button { cursor: pointer; -webkit-tap-highlight-color: transparent; }
#screen-onb :focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 6px; }
#screen-onb [hidden] { display: none !important; }
/* Her zaman beyaz (tek tema). Uygulamanın kendi paleti: lacivert, beyaz, altın. Tek sütun, her ekranda tek soru, bol boşluk. Altın yalnızca ince vurgularda. */
  --bg: #FFFFFF; --sunk: #F6F5F1; --ink: #0F1E45; --muted: #5B6478; --faint: #8A90A2;
  --line: #E7E4DB; --line-strong: #C9C4B4; --gold: #D4AF5F; --gold-ink: #9A7412;
  --tyt: #1B3A6B; --ayt: #9A7412;
  --btn: #0F1E45; --btn-ink: #FFFFFF; --sel: #0F1E45; --sel-ink: #FFFFFF;
  --display: "Familjen Grotesk", "Segoe UI", system-ui, sans-serif;
  --body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
  color-scheme: light;
}
#screen-onb .ob-proto { text-align: center; font-size: 12px; letter-spacing: .06em; color: var(--faint); padding-block: 8px; border-bottom: 1px solid var(--line); }
#screen-onb .ob-wrap { max-width: 520px; margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); padding-block: 8px 190px; }

#screen-onb .ob-top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: var(--bg); padding-block: 14px 18px; display: grid; gap: 12px; }
#screen-onb .ob-prog-row { display: flex; justify-content: space-between; align-items: center; min-height: 24px; }
#screen-onb .ob-back { background: none; border: 0; padding: 0; color: var(--muted); font-size: 15px; }
#screen-onb .ob-prog-label { font-size: 13px; color: var(--faint); font-variant-numeric: tabular-nums; }
#screen-onb .ob-prog-label b { color: var(--gold-ink); font-weight: 600; }
#screen-onb .ob-track { height: 2px; background: var(--line); border-radius: 2px; overflow: hidden; }
#screen-onb .ob-track i { display: block; height: 100%; width: 0; background: var(--gold); transition: width .9s var(--ease); }

#screen-onb h1, #screen-onb h2 { font-family: var(--display); font-weight: 500; letter-spacing: -.02em; text-wrap: balance; margin: 0; }
#screen-onb h1 { font-size: clamp(36px, 10vw, 46px); line-height: 1.04; }
#screen-onb h2 { font-size: clamp(27px, 7.4vw, 32px); line-height: 1.1; }
#screen-onb .ob-lead { color: var(--muted); margin: 10px 0 0; font-size: 16px; }
#screen-onb .ob-eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--gold-ink); }
#screen-onb .ob-step { display: grid; gap: 28px; }
#screen-onb .ob-step > * { min-width: 0; animation: ob-enter .6s var(--ease) both; animation-delay: calc(var(--i, 0) * 70ms); }
@keyframes ob-enter { from { opacity: 0; transform: translateY(8px); } }

/* Giriş */
#screen-onb .ob-hero { padding-top: 7vh; gap: 26px; }
#screen-onb .ob-rule { width: 36px; height: 2px; background: var(--gold); }
#screen-onb .ob-plain { margin: 0; padding: 0; list-style: none; display: grid; }
#screen-onb .ob-plain li { display: grid; grid-template-columns: 28px 1fr; padding-block: 14px; border-top: 1px solid var(--line); color: var(--ink); }
#screen-onb .ob-plain li:last-child { border-bottom: 1px solid var(--line); }
#screen-onb .ob-plain li span { font: 500 14px/1.6 var(--display); color: var(--gold-ink); font-variant-numeric: tabular-nums; }

/* Seçenek satırları */
#screen-onb .ob-options { display: grid; gap: 10px; }
#screen-onb .ob-option { display: flex; align-items: center; justify-content: space-between; gap: 14px; width: 100%; text-align: left; background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 18px 18px; transition: border-color .25s, box-shadow .25s; }
#screen-onb .ob-option b { display: block; font: 500 20px/1.2 var(--display); letter-spacing: -.01em; }
#screen-onb .ob-option small { display: block; color: var(--muted); font-size: 14px; margin-top: 2px; }
#screen-onb .ob-radio { flex: none; width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--line-strong); display: grid; place-items: center; transition: border-color .25s, background .25s; }
#screen-onb .ob-radio::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--btn-ink); transform: scale(0); transition: transform .3s var(--ease); }
#screen-onb .ob-option[aria-pressed="true"] { border-color: var(--ink); box-shadow: 0 0 0 1px var(--ink); }
#screen-onb .ob-option[aria-pressed="true"] .ob-radio { background: var(--btn); border-color: var(--btn); }
#screen-onb .ob-option[aria-pressed="true"] .ob-radio::after { transform: scale(1); }

/* Büyük rakam */
#screen-onb .ob-figure { display: grid; gap: 6px; padding-top: 4px; }
#screen-onb .ob-figure .ob-n { font: 500 56px/1 var(--display); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
#screen-onb .ob-figure .ob-n small { font-size: 22px; letter-spacing: 0; color: var(--muted); margin-left: 6px; }
#screen-onb .ob-figure p { margin: 0; color: var(--muted); font-size: 15px; max-width: 36ch; }
#screen-onb .ob-figure .ob-rule { margin-bottom: 8px; }

/* Zaman */
#screen-onb .ob-field { display: grid; gap: 12px; }
#screen-onb .ob-label { font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
#screen-onb .ob-stepper { display: flex; align-items: center; justify-content: space-between; border: 1px solid var(--line); border-radius: 14px; padding: 8px; }
#screen-onb .ob-stepper button { width: 48px; height: 48px; border-radius: 10px; border: 0; background: var(--sunk); font-size: 22px; line-height: 1; color: var(--ink); }
#screen-onb .ob-stepper button:disabled { opacity: .35; cursor: default; }
#screen-onb .ob-stepper output { font: 500 26px/1 var(--display); font-variant-numeric: tabular-nums; }
#screen-onb .ob-stepper output small { font-size: 15px; color: var(--muted); margin-left: 4px; font-family: var(--body); }
#screen-onb .ob-days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
#screen-onb .ob-day-b { aspect-ratio: 1; max-width: 100%; border-radius: 50%; border: 1px solid var(--line-strong); background: var(--bg); font-size: 13px; font-weight: 600; color: var(--muted); padding: 0; transition: background .25s, color .25s, border-color .25s; }
#screen-onb .ob-day-b[aria-pressed="true"] { background: var(--sel); border-color: var(--sel); color: var(--sel-ink); }

/* Konular: ders başına açılır satır */
#screen-onb .ob-subjects { border-top: 1px solid var(--line); }
#screen-onb .ob-subj { border-bottom: 1px solid var(--line); }
#screen-onb .ob-subj-h { display: flex; align-items: center; gap: 12px; width: 100%; background: none; border: 0; padding: 18px 2px; text-align: left; }
#screen-onb .ob-subj-h .ob-nm { flex: 1; font: 500 18px/1.2 var(--display); }
#screen-onb .ob-ex { font-size: 11px; font-weight: 600; letter-spacing: .1em; color: var(--tyt); margin-right: 8px; }
#screen-onb .ob-ex.ob-ayt { color: var(--ayt); }
#screen-onb .ob-cnt { font-size: 14px; color: var(--faint); font-variant-numeric: tabular-nums; white-space: nowrap; }
#screen-onb .ob-cnt.ob-has { color: var(--ink); font-weight: 600; }
#screen-onb .ob-chev { width: 9px; height: 9px; border-right: 1.5px solid var(--faint); border-bottom: 1.5px solid var(--faint); transform: rotate(45deg) translateY(-3px); transition: transform .35s var(--ease); flex: none; }
#screen-onb .ob-subj.ob-open .ob-chev { transform: rotate(225deg) translate(-2px, -1px); }
#screen-onb .ob-subj-b { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .4s var(--ease); }
#screen-onb .ob-subj.ob-open .ob-subj-b { grid-template-rows: 1fr; }
#screen-onb .ob-subj-b > div { overflow: hidden; }
#screen-onb .ob-subj-in { display: grid; gap: 14px; padding: 0 2px 20px; }
#screen-onb .ob-chips { display: flex; flex-wrap: wrap; gap: 8px; }
#screen-onb .ob-chip { border: 1px solid var(--line-strong); background: var(--bg); border-radius: 99px; padding: 8px 14px; font-size: 15px; line-height: 1.2; color: var(--ink); transition: background .25s, color .25s, border-color .25s; }
#screen-onb .ob-chip[aria-pressed="true"] { background: var(--sel); color: var(--sel-ink); border-color: var(--sel); }
#screen-onb .ob-link { background: none; border: 0; padding: 0; color: var(--muted); font-size: 14px; text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 4px; justify-self: start; }

/* Kitap ve kamp */
#screen-onb .ob-rows { border-top: 1px solid var(--line); }
#screen-onb .ob-rowx { display: grid; gap: 12px; padding-block: 18px; border-bottom: 1px solid var(--line); }
#screen-onb .ob-rowx-h { font: 500 18px/1.2 var(--display); }
#screen-onb .ob-note { font-size: 14px; color: var(--muted); }
#screen-onb .ob-note.ob-ok { color: var(--ink); }
#screen-onb .ob-note.ob-ok::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); margin-right: 8px; vertical-align: 2px; }
#screen-onb select, #screen-onb input[type="text"] { width: 100%; min-width: 0; background: var(--bg); border: 1px solid var(--line-strong); border-radius: 12px; padding: 13px 14px; font-size: 16px; }
#screen-onb .ob-own { display: flex; gap: 8px; }
#screen-onb .ob-own button { flex: none; border: 1px solid var(--line-strong); background: var(--bg); border-radius: 12px; padding: 0 18px; font-weight: 600; }

/* Alt alan */
#screen-onb .ob-foot { position: fixed; left: 0; right: 0; bottom: 0; z-index: 6; background: var(--bg); border-top: 1px solid var(--line); padding-top: 14px; padding-bottom: calc(14px + env(safe-area-inset-bottom, 0px)); padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
#screen-onb .ob-foot.ob-bare { border-top-color: transparent; }
#screen-onb .ob-foot-in { max-width: 520px; margin: 0 auto; display: grid; gap: 10px; }
#screen-onb .ob-cta { width: 100%; border: 0; border-radius: 14px; padding: 17px 18px; background: var(--btn); color: var(--btn-ink); font: 500 18px/1 var(--display); letter-spacing: -.01em; transition: opacity .25s, transform .15s; }
#screen-onb .ob-cta:active { transform: scale(.985); }
#screen-onb .ob-cta:disabled { opacity: .28; cursor: default; }
#screen-onb .ob-cta.ob-gold { background: var(--gold); color: #0F1E45; }
#screen-onb .ob-cta-sub { text-align: center; font-size: 13px; color: var(--faint); }
#screen-onb .ob-need { display: grid; gap: 8px; }
#screen-onb .ob-need-row { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; font-size: 14px; color: var(--muted); }
#screen-onb .ob-need-row b { color: var(--ink); font: 500 17px/1 var(--display); font-variant-numeric: tabular-nums; }
#screen-onb .ob-meter { height: 3px; background: var(--line); border-radius: 3px; overflow: hidden; }
#screen-onb .ob-meter i { display: block; height: 100%; width: 0; background: var(--ink); transition: width .7s var(--ease); }
#screen-onb .ob-meter i.ob-tight { background: var(--gold); }
#screen-onb .ob-verdict { color: var(--ink); font-weight: 600; }
#screen-onb .ob-verdict.ob-tight { color: var(--gold-ink); }
#screen-onb .ob-est { font-size: 12px; color: var(--faint); margin: 0; }

/* Hazırlanıyor */
#screen-onb .ob-ringbox { display: grid; place-items: center; padding-block: 10px 0; }
#screen-onb .ob-ring { position: relative; width: 132px; height: 132px; }
#screen-onb .ob-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
#screen-onb .ob-ring circle { fill: none; stroke-width: 2.5; }
#screen-onb .ob-ring .ob-trk { stroke: var(--line); }
#screen-onb .ob-ring .ob-val { stroke: var(--gold); stroke-linecap: round; stroke-dasharray: 377; stroke-dashoffset: 377; transition: stroke-dashoffset 1s var(--ease); }
#screen-onb .ob-ring span { position: absolute; inset: 0; display: grid; place-items: center; font: 500 30px/1 var(--display); font-variant-numeric: tabular-nums; }
#screen-onb .ob-checks { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
#screen-onb .ob-checks li { display: grid; grid-template-columns: 24px 1fr; gap: 14px; align-items: start; padding-block: 14px; border-bottom: 1px solid var(--line); opacity: .3; transition: opacity .5s var(--ease); }
#screen-onb .ob-checks li.ob-on { opacity: 1; }
#screen-onb .ob-checks small { display: block; color: var(--muted); font-size: 14px; }
#screen-onb .ob-tick { width: 22px; height: 22px; margin-top: 1px; }
#screen-onb .ob-tick circle { fill: none; stroke: var(--line-strong); stroke-width: 1.5; transition: stroke .3s; }
#screen-onb .ob-tick path { fill: none; stroke: var(--gold-ink); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 14; stroke-dashoffset: 14; transition: stroke-dashoffset .45s var(--ease) .05s; }
#screen-onb li.ob-done .ob-tick circle { stroke: var(--gold); }
#screen-onb li.ob-done .ob-tick path { stroke-dashoffset: 0; }

/* Önizleme */
#screen-onb .ob-stats { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
#screen-onb .ob-stats div { padding: 16px 4px 14px; display: grid; gap: 4px; min-width: 0; }
#screen-onb .ob-stats div + div { border-left: 1px solid var(--line); padding-left: 14px; }
#screen-onb .ob-stats b { font: 500 30px/1 var(--display); letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
#screen-onb .ob-stats span { font-size: 13px; color: var(--muted); }
#screen-onb .ob-finish { margin: 0; }
#screen-onb .ob-finish b { font-weight: 600; color: var(--ink); border-bottom: 2px solid var(--gold); }
#screen-onb .ob-day { border: 1px solid var(--line); border-radius: 16px; padding: 4px 18px; background: var(--bg); }
#screen-onb .ob-day-h { display: flex; justify-content: space-between; align-items: baseline; padding-block: 14px 10px; font: 500 18px/1.2 var(--display); }
#screen-onb .ob-day-h span { font: 400 14px/1 var(--body); color: var(--muted); }
#screen-onb .ob-task { display: grid; grid-template-columns: 3px 1fr; gap: 14px; padding-block: 12px; border-top: 1px solid var(--line); }
#screen-onb .ob-task::before { content: ""; border-radius: 3px; background: var(--tyt); }
#screen-onb .ob-task.ob-ayt::before { background: var(--ayt); }
#screen-onb .ob-task b { display: block; font-weight: 600; font-size: 16px; line-height: 1.3; }
#screen-onb .ob-task span { font-size: 14px; color: var(--muted); }
#screen-onb .ob-locked { position: relative; display: grid; gap: 12px; }
#screen-onb .ob-locked .ob-day { filter: blur(6px); opacity: .55; user-select: none; pointer-events: none; }
#screen-onb .ob-lock { position: absolute; inset: 0; display: grid; place-items: center; padding: 16px; }
#screen-onb .ob-lock div { background: var(--bg); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; display: grid; justify-items: center; gap: 6px; text-align: center; max-width: 300px; box-shadow: 0 18px 40px -20px rgba(15, 30, 69, .35); }
#screen-onb .ob-lock svg { width: 22px; height: 22px; stroke: var(--gold-ink); fill: none; stroke-width: 1.6; margin-bottom: 4px; }
#screen-onb .ob-lock b { font: 500 19px/1.2 var(--display); }
#screen-onb .ob-lock span { font-size: 14px; color: var(--muted); }

/* Ödeme */
#screen-onb .ob-plan-card { border: 1px solid var(--line); border-radius: 18px; padding: 24px 22px; display: grid; gap: 18px; }
#screen-onb .ob-plan-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
#screen-onb .ob-badge { font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--gold-ink); border: 1px solid var(--gold); border-radius: 99px; padding: 5px 10px; }
#screen-onb .ob-price { font: 500 52px/1 var(--display); letter-spacing: -.03em; }
#screen-onb .ob-price small { font: 400 16px/1 var(--body); color: var(--muted); letter-spacing: 0; margin-left: 4px; }
#screen-onb .ob-incl { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; border-top: 1px solid var(--line); padding-top: 18px; }
#screen-onb .ob-incl li { display: grid; grid-template-columns: 18px 1fr; gap: 12px; align-items: baseline; }
#screen-onb .ob-incl li::before { content: ""; width: 10px; height: 5px; border: solid var(--gold-ink); border-width: 0 0 1.6px 1.6px; transform: rotate(-45deg) translateY(-3px); }

/* Bitti */
#screen-onb .ob-done-mark { width: 64px; height: 64px; }
#screen-onb .ob-done-mark circle { fill: none; stroke: var(--gold); stroke-width: 2; stroke-dasharray: 189; stroke-dashoffset: 189; animation: ob-draw .9s var(--ease) .2s forwards; }
#screen-onb .ob-done-mark path { fill: none; stroke: var(--gold-ink); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 34; stroke-dashoffset: 34; animation: ob-draw .5s var(--ease) .9s forwards; }
@keyframes ob-draw { to { stroke-dashoffset: 0; } }
.again { justify-self: center; }
#screen-onb .ob-q { margin-top: 10px; }
#screen-onb .ob-links { display: flex; gap: 22px; }
#screen-onb .ob-option.ob-sm { padding: 14px 16px; border-radius: 12px; }
#screen-onb .ob-option.ob-sm b { font-size: 17px; }
#screen-onb .ob-option.ob-sm small { font-size: 13px; }
#screen-onb .ob-sumline { font: 500 22px/1.2 var(--display); letter-spacing: -.01em; }
#screen-onb .ob-fine { margin: -8px 0 0; font-size: 14px; color: var(--muted); }
#screen-onb .ob-perks { margin: 0; padding: 18px 0 0; list-style: none; display: grid; gap: 16px; border-top: 1px solid var(--line); }
#screen-onb .ob-perks li { display: grid; grid-template-columns: 20px 1fr; gap: 12px; align-items: start; }
#screen-onb .ob-perks svg { width: 20px; height: 20px; margin-top: 1px; fill: none; stroke: var(--gold-ink); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
#screen-onb .ob-perks b { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font: 500 17px/1.3 var(--display); }
#screen-onb .ob-perks span { display: block; font-size: 14px; color: var(--muted); margin-top: 2px; }
#screen-onb .ob-perks .ob-free { display: inline-block; margin: 0; font: 600 10px/1 var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-ink); border: 1px solid var(--gold); border-radius: 99px; padding: 4px 8px; }
#screen-onb .ob-iab { margin-block: 4px 18px; padding: 14px 16px; border: 1px solid var(--gold); border-radius: 12px; background: #FBF6EA; font-size: 15px; line-height: 1.45; }
#screen-onb .ob-iab b { font-weight: 600; }
@media (prefers-reduced-motion: reduce) {
  #screen-onb *, #screen-onb *::before, #screen-onb *::after { animation: none !important; transition: none !important; }
  #screen-onb .ob-done-mark circle, #screen-onb .ob-done-mark path { stroke-dashoffset: 0; }
}