/* =====================================================================
   DersAtölye — stil dosyası
   MEB ortak sınav arayüzünden esinlenilmiş, yeşil–beyaz kurumsal tema
   ===================================================================== */
:root{
  --green:#1f6f4a; --green-2:#2e8b5e; --green-3:#e8f3ed; --green-4:#f3f9f5;
  --ink:#16221d; --ink-2:#3d5248; --muted:#6c8378;
  --line:#d9e5de; --paper:#ffffff; --bg:#f4f7f5;
  --amber:#b45309; --red:#c0392b; --blue:#1d4ed8; --purple:#7e22ce;
  --radius:14px; --shadow:0 10px 30px rgba(20,60,40,.08);
  --shadow-s:0 2px 8px rgba(20,60,40,.07);
  --font:'Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
  --mono:'Cambria','Georgia',serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  -webkit-text-size-adjust:100%;font-size:16px;line-height:1.55;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 18px}
.accent-bar{height:6px;background:linear-gradient(90deg,var(--green),#5cb87f 45%,#e8b23a)}

/* ---------------- üst menü ---------------- */
.topbar{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60;
  box-shadow:0 2px 10px rgba(20,60,40,.05)}
.topbar-in{display:flex;align-items:center;gap:18px;height:70px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(140deg,var(--green),#3f9d6d);
  color:#fff;display:grid;place-items:center;font:700 22px/1 var(--mono);box-shadow:var(--shadow-s)}
.brand-txt b{display:block;font-size:18px;letter-spacing:-.2px}
.brand-txt small{display:block;color:var(--muted);font-size:11.5px;margin-top:-2px}
.mainnav{margin-left:auto;display:flex;gap:4px;align-items:center}
.mainnav a{padding:9px 13px;border-radius:9px;font-weight:600;font-size:14.5px;color:var(--ink-2);
  transition:.15s;display:flex;align-items:center;gap:6px}
.mainnav a:hover{background:var(--green-3);color:var(--green)}
.mainnav a.active{background:var(--green);color:#fff;box-shadow:var(--shadow-s)}
.badge{font-style:normal;background:#fff;color:var(--green);border-radius:20px;padding:0 6px;font-size:11px;
  font-weight:800;border:1px solid var(--line)}
.mainnav a.active .badge{background:rgba(255,255,255,.25);color:#fff;border-color:transparent}
.hamburger{display:none;margin-left:auto;background:var(--green-3);border:1px solid var(--line);color:var(--green);
  font-size:20px;width:42px;height:42px;border-radius:11px;cursor:pointer}
.mobile-nav{display:none;flex-direction:column;border-top:1px solid var(--line);background:#fff;padding:8px 18px 14px}
.mobile-nav a{padding:11px 6px;border-bottom:1px dashed var(--line);font-weight:600;color:var(--ink-2)}
.mobile-nav.open{display:flex}

/* ---------------- ortak bileşenler ---------------- */
main{min-height:60vh;padding:26px 0 60px}
h1,h2,h3{margin:0;letter-spacing:-.4px;line-height:1.2}
h1{font-size:30px}
h2{font-size:22px}
.lead{color:var(--ink-2);font-size:16px;margin:8px 0 0;max-width:70ch}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:14px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.crumbs a{color:var(--green);font-weight:700}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-s)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin:0 0 14px}
.btn{display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer;font:inherit;font-weight:700;
  padding:11px 18px;border-radius:11px;background:var(--green);color:#fff;transition:.15s;box-shadow:var(--shadow-s)}
.btn:hover{background:var(--green-2);transform:translateY(-1px)}
.btn.ghost{background:#fff;color:var(--green);border:1.5px solid var(--green)}
.btn.ghost:hover{background:var(--green-3)}
.btn.sm{padding:7px 12px;font-size:13.5px;border-radius:9px}
.btn.amber{background:var(--amber)}
.btn.grey{background:#eef3f0;color:var(--ink-2);border:1px solid var(--line)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.pill{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:800;padding:3px 9px;border-radius:30px;
  background:#eef3f0;color:var(--ink-2);border:1px solid var(--line);white-space:nowrap}
.pill.kolay{background:#e7f7ec;color:#166534;border-color:#bfe8cd}
.pill.orta{background:#fff5db;color:#92400e;border-color:#f6dfa3}
.pill.zor{background:#fde9e5;color:#9f2417;border-color:#f6c2b9}
.pill.cok-zor{background:#efe2fb;color:#6b21a8;border-color:#dcc3f5}
.pill.ok{background:#e7f7ec;color:#166534;border-color:#bfe8cd}
.pill.erase{background:#fde9e5;color:#9f2417;border-color:#f6c2b9}
.pill.kaz{background:var(--green-3);color:var(--green);border-color:#cfe6db;font-family:var(--mono)}

/* ---------------- ana sayfa ---------------- */
.hero{display:grid;grid-template-columns:1.35fr .95fr;gap:22px;align-items:stretch;margin-bottom:26px}
.hero-card{background:linear-gradient(150deg,#f7fbf8,#eaf4ee);border:1px solid var(--line);
  border-radius:20px;padding:30px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero-card:before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(46,139,94,.22),transparent 70%)}
.hero-card h1{font-size:34px;max-width:22ch}
.hero-card p{color:var(--ink-2);margin:12px 0 20px;max-width:52ch}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap}
.hero-side{display:grid;gap:14px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--shadow-s);
  display:flex;gap:14px;align-items:center}
.stat-card .num{font:800 26px/1 var(--font);color:var(--green);min-width:58px}
.stat-card .lbl{font-size:13px;color:var(--ink-2);font-weight:600}

.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.ders-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow-s);
  position:relative;overflow:hidden;transition:.18s;display:flex;flex-direction:column;gap:10px}
.ders-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.ders-card .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:21px;color:#fff}
.ders-card h3{font-size:17px}
.ders-card .meta{font-size:13px;color:var(--muted)}
.ders-card .go{margin-top:auto;font-weight:800;font-size:13.5px;color:var(--green);display:flex;align-items:center;gap:6px}
.ders-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px}

/* ---------------- soru bankası ---------------- */
.bank-layout{display:grid;grid-template-columns:290px 1fr;gap:22px;align-items:start}
.side{position:sticky;top:86px;display:grid;gap:14px}
.side .card{padding:14px}
.side h4{margin:0 0 8px;font-size:12px;text-transform:uppercase;letter-spacing:.8px;color:var(--muted)}
.chip-list{display:flex;flex-direction:column;gap:5px}
.chip-list a{padding:9px 11px;border-radius:9px;font-size:14px;font-weight:600;color:var(--ink-2);
  display:flex;align-items:center;justify-content:space-between;gap:8px}
.chip-list a:hover{background:var(--green-4)}
.chip-list a.active{background:var(--green-3);color:var(--green);font-weight:800}
.chip-list a span.c{font-size:11.5px;color:var(--muted);font-weight:700}
.filter-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.fbtn{border:1.5px solid var(--line);background:#fff;padding:7px 13px;border-radius:30px;font:inherit;font-weight:700;
  font-size:13px;color:var(--ink-2);cursor:pointer;transition:.15s}
.fbtn:hover{border-color:var(--green-2);color:var(--green)}
.fbtn.active{background:var(--green);border-color:var(--green);color:#fff}

/* ---------------- soru kartı ---------------- */
.q-card{background:#fff;border:1px solid var(--line);border-left-width:6px;border-radius:14px;padding:18px 20px;
  margin-bottom:16px;box-shadow:var(--shadow-s)}
.q-card[data-z="kolay"]{border-left-color:#2e9e5b}
.q-card[data-z="orta"]{border-left-color:#e0a92c}
.q-card[data-z="zor"]{border-left-color:#d9543c}
.q-card[data-z="cok-zor"]{border-left-color:#8b46c9}
.q-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.q-no{width:30px;height:30px;border-radius:9px;background:var(--green-3);color:var(--green);display:grid;place-items:center;
  font-weight:800;font-size:14px;flex:0 0 auto}
.q-body{font-family:var(--mono);font-size:17px;line-height:1.75;color:var(--ink);white-space:pre-wrap}
.q-body em{font-style:normal;font-weight:700;color:#0f5132;background:linear-gradient(transparent 62%,#d8f0e3 62%);
  padding:0 2px;border-radius:2px}
.q-body sup{font-size:.72em}
.q-body sub{font-size:.72em}
.q-tools{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;padding-top:12px;border-top:1px dashed var(--line)}
.ans-box{margin-top:12px;border-radius:11px;border:1px dashed var(--line);background:var(--green-4);padding:13px 15px;
  font-size:14.5px;color:var(--ink-2);display:none}
.ans-box.open{display:block}
.ans-box b{color:var(--green)}
.ans-box .sol{white-space:pre-wrap;font-family:var(--mono);font-size:15px;color:var(--ink);margin-top:6px}

/* ---------------- sınav modu ---------------- */
.exam-head{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin-bottom:18px;
  box-shadow:var(--shadow-s);display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.timer{font:800 22px/1 var(--font);color:var(--green);background:var(--green-3);padding:10px 16px;border-radius:11px;
  border:1px solid #cfe6db;min-width:98px;text-align:center}
.timer.warn{color:#9f2417;background:#fde9e5;border-color:#f6c2b9}

/* ---------------- defter ---------------- */
.note-grid{display:grid;gap:16px}
.note-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:var(--shadow-s)}
.note-card .nc-head{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:10px;
  flex-wrap:wrap}
.note-card .thumb{width:100%;border:1px solid var(--line);border-radius:10px;background:
  repeating-linear-gradient(#fff,#fff 27px,#eef3f0 27px,#eef3f0 28px);display:block}
.empty{padding:40px 20px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--line);
  border-radius:14px}

/* ---------------- kalem araç çubuğu ---------------- */
.pen-wrap{position:relative}
.pen-canvas{width:100%;display:block;background:#fff;border-radius:12px;touch-action:none;
  background-image:linear-gradient(#f0f5f2 1px,transparent 1px);background-size:100% 30px;
  box-shadow:inset 0 0 0 1px var(--line)}
.pen-canvas.plain{background-image:none}
.pen-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);
  border-radius:13px;padding:9px 11px;box-shadow:var(--shadow-s);margin-bottom:10px}
.pen-bar .sep{width:1px;height:24px;background:var(--line)}
.tool{width:38px;height:38px;border-radius:10px;border:1.5px solid var(--line);background:#fff;cursor:pointer;
  display:grid;place-items:center;font-size:17px;transition:.15s;position:relative}
.tool:hover{border-color:var(--green-2);background:var(--green-4)}
.tool.active{background:var(--green);color:#fff;border-color:var(--green)}
.swatch{width:26px;height:26px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1.5px var(--line);cursor:pointer;
  transition:.15s}
.swatch:hover{transform:scale(1.12)}
.swatch.active{box-shadow:0 0 0 2.5px var(--green);transform:scale(1.1)}
.size-dot{border:1.5px solid var(--line);background:#fff;border-radius:50%;cursor:pointer;display:grid;
  place-items:center;width:32px;height:32px}
.size-dot i{display:block;background:var(--ink);border-radius:50%}
.size-dot.active{border-color:var(--green);background:var(--green-4)}
.pen-hint{font-size:12.5px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.pen-hint kbd{background:#fff;border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;
  padding:1px 6px;font:inherit;font-size:11.5px;font-weight:700;color:var(--ink-2)}
.fab-pen{position:fixed;right:18px;bottom:18px;z-index:70;background:var(--green);color:#fff;border:none;
  padding:13px 18px;border-radius:40px;font:inherit;font-weight:800;box-shadow:0 10px 26px rgba(31,111,74,.35);
  cursor:pointer;display:flex;align-items:center;gap:8px}

/* kalem testi sayfası */
.test-layout{display:grid;grid-template-columns:1fr 300px;gap:18px;align-items:start}
.test-info{font-size:13.5px;color:var(--ink-2)}
.test-info .row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--line);gap:10px}
.test-info .row b{font-family:var(--mono);color:var(--green)}
.support-list{list-style:none;padding:0;margin:10px 0 0;font-size:14px;color:var(--ink-2)}
.support-list li{padding:7px 0;border-bottom:1px dashed var(--line);display:flex;gap:8px;align-items:flex-start}
.support-list li:before{content:"✓";color:var(--green);font-weight:900}

/* ---------------- toast & footer ---------------- */
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,140%);background:#16221d;color:#fff;
  padding:12px 20px;border-radius:12px;font-size:14px;font-weight:600;z-index:200;transition:.3s;
  box-shadow:0 12px 30px rgba(0,0,0,.24);max-width:90vw}
.toast.show{transform:translate(-50%,0)}
.foot{background:#0f2119;color:#cfe0d7;padding:30px 0;font-size:13.5px;margin-top:30px}
.foot-in{display:flex;justify-content:space-between;gap:22px;flex-wrap:wrap}
.foot b{color:#fff}
.foot-note{color:#a9c3b6;max-width:52ch}
@media (max-width:1000px){
  .hero{grid-template-columns:1fr}
  .bank-layout{grid-template-columns:1fr}
  .side{position:static}
  .test-layout{grid-template-columns:1fr}
}
@media (max-width:760px){
  .mainnav{display:none}
  .hamburger{display:grid;place-items:center}
  .brand-txt small{display:none}
  h1{font-size:24px}
  .hero-card{padding:22px}
  .hero-card h1{font-size:26px}
  .q-body{font-size:16px}
  main{padding:18px 0 70px}
  .mobile-nav a:last-child{border-bottom:none}
}
@media print{
  .topbar,.foot,.pen-bar,.fab-pen,.q-tools,.fbtn,.side{display:none!important}
  body{background:#fff}
}