/* =========================================================
   İlk Sınıfım — "defter & çıkartma" tasarım sistemi
   Krem kâğıt zemin, kalın mürekkep kontur, kaydırılmış gölge
   ========================================================= */
:root {
  --ink: #1b1b3a;
  --ink-soft: #4a4a6a;
  --muted: #6e6e8a;
  --paper: #fffaf0;
  --paper-2: #fff3dc;
  --card: #ffffff;
  --line: #e9e2cf;
  --tomato: #ff6b4a;
  --sun: #ffc93c;
  --mint: #2ec4b6;
  --sky: #4d96ff;
  --grape: #9b5de5;
  --pink: #ff8fab;
  --leaf: #22a06b;
  --danger: #e5383b;
  --primary: var(--sky);
  --radius: 18px;
  --radius-sm: 12px;
  --bd: 2px solid var(--ink);
  --sh: 4px 4px 0 var(--ink);
  --sh-lg: 7px 7px 0 var(--ink);
  --font-head: 'Fredoka', 'Nunito', system-ui, sans-serif;
  --font-body: 'Nunito', system-ui, -apple-system, 'Segoe UI', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font-body); font-size: 16px; line-height: 1.6; color: var(--ink);
  background-color: var(--paper);
  background-image: radial-gradient(rgba(27, 27, 58, .07) 1px, transparent 1px);
  background-size: 22px 22px;
}
a { color: var(--ink); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:hover { color: var(--tomato); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; margin: 0 0 .5em; font-weight: 600; letter-spacing: -.01em; }
h1 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h2 { font-size: clamp(1.35rem, 2.4vw, 1.8rem); }
h3 { font-size: 1.1rem; }
code { background: var(--paper-2); padding: 2px 6px; border-radius: 6px; font-size: .9em; }
.container { width: 100%; max-width: 1220px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.center { text-align: center; }
.right { text-align: right; }
.mt { margin-top: 32px; }
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 660px; margin: 0 auto 1rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 2px; border-radius: 6px; }

/* İşaretleyici (marker) vurgusu */
.mark { background: linear-gradient(transparent 58%, var(--sun) 58%, var(--sun) 90%, transparent 90%); padding: 0 .1em; }
.mark-mint { background: linear-gradient(transparent 58%, #9ff0e6 58%, #9ff0e6 90%, transparent 90%); }
.scribble { font-family: 'Caveat', cursive; font-size: 1.35em; color: var(--tomato); font-weight: 700; }

/* ================= Butonlar ================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; border: var(--bd); border-radius: 999px;
  background: var(--sky); color: #fff; font: inherit; font-weight: 800;
  cursor: pointer; text-decoration: none; box-shadow: 3px 3px 0 var(--ink);
  transition: transform .12s, box-shadow .12s, background .12s; white-space: nowrap;
}
.btn:hover { color: #fff; transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ink); text-decoration: none; }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.btn-sm { padding: 6px 14px; font-size: .875rem; box-shadow: 2px 2px 0 var(--ink); }
.btn-lg { padding: 13px 26px; font-size: 1.05rem; }
.btn-block { display: flex; width: 100%; margin-top: 10px; }
.btn-ghost { background: #fff; color: var(--ink); }
.btn-ghost:hover { color: var(--ink); background: var(--paper-2); }
.btn-premium, .btn-sun { background: var(--sun); color: var(--ink); }
.btn-premium:hover, .btn-sun:hover { color: var(--ink); }
.btn-success { background: var(--leaf); }
.btn-tomato { background: var(--tomato); }
.btn-danger { background: #fff; color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }

/* ================= Header ================= */
.site-header { background: var(--paper); border-bottom: var(--bd); position: sticky; top: 0; z-index: 50; }
.header-top { display: flex; align-items: center; gap: 18px; padding-top: 12px; padding-bottom: 12px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.logo:hover { color: var(--ink); }
.logo-mark { width: 46px; height: 46px; display: grid; place-items: center; background: var(--sun); border: var(--bd); border-radius: 14px; font-size: 1.4rem; box-shadow: 3px 3px 0 var(--ink); transform: rotate(-6deg); transition: transform .2s; }
.logo:hover .logo-mark { transform: rotate(6deg) scale(1.05); }
.logo-text { display: flex; flex-direction: column; line-height: 1; font-family: var(--font-head); font-weight: 700; font-size: 1.45rem; }
.logo-text small { font-family: var(--font-body); font-size: .72rem; font-weight: 700; color: var(--muted); margin-top: 4px; letter-spacing: .02em; }
.logo-light { color: #fff; }
.logo-light:hover { color: #fff; }
.header-search { flex: 1; display: flex; max-width: 470px; margin-left: auto; border: var(--bd); border-radius: 999px; background: #fff; overflow: hidden; box-shadow: 3px 3px 0 var(--ink); }
.header-search input { flex: 1; min-width: 0; padding: 10px 16px; border: 0; font: inherit; background: transparent; }
.header-search input:focus { outline: none; }
.header-search button { padding: 0 16px; border: 0; border-left: var(--bd); background: var(--sun); cursor: pointer; font-size: 1rem; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.mini-star { font-size: .8em; }
.nav-toggle { display: none; background: #fff; border: var(--bd); border-radius: 12px; font-size: 1.25rem; padding: 4px 12px; cursor: pointer; box-shadow: 2px 2px 0 var(--ink); }
.main-nav { border-top: 1.5px dashed rgba(27, 27, 58, .25); }
.nav-inner { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; padding-top: 8px; padding-bottom: 8px; }
.nav-inner a { padding: 6px 14px; color: var(--ink); font-weight: 800; white-space: nowrap; border: 2px solid transparent; border-radius: 999px; text-decoration: none; font-size: .95rem; }
.nav-inner a:hover, .nav-inner a.active { border-color: var(--ink); background: #fff; color: var(--ink); }
.nav-inner .nav-oy { background: var(--tomato); color: #fff; border-color: var(--ink); }
.nav-inner .nav-oy:hover { background: var(--tomato); color: #fff; }
.nav-inner .nav-premium { margin-left: auto; background: var(--sun); border-color: var(--ink); }

/* ================= Uyarılar ================= */
.flashes { padding-top: 16px; }
.alert { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 12px; border: var(--bd); font-weight: 600; background: #fff; box-shadow: 3px 3px 0 var(--ink); }
.alert-success { background: #e5f8ee; }
.alert-error { background: #ffe9e6; }
.alert-warning { background: #fff4d1; }
.alert-info { background: #e6f0ff; }
.alert.inline { display: inline-block; margin-top: 12px; }

/* ================= Hero ================= */
.hero { padding: 48px 0 56px; position: relative; overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.hero-kicker { display: inline-flex; align-items: center; gap: 6px; background: #fff; padding: 4px 14px; border: var(--bd); border-radius: 999px; font-weight: 800; font-size: .85rem; box-shadow: 2px 2px 0 var(--ink); margin-bottom: 16px; }
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.5rem); font-weight: 700; line-height: 1.08; margin-bottom: 16px; }
.hero p.hero-sub { font-size: 1.15rem; color: var(--ink-soft); max-width: 560px; }
.hero-search { display: flex; gap: 0; background: #fff; border: var(--bd); border-radius: 999px; box-shadow: var(--sh); margin-top: 22px; overflow: hidden; }
.hero-search select, .hero-search input { border: 0; font: inherit; padding: 14px 16px; background: transparent; min-width: 0; color: var(--ink); }
.hero-search select { border-right: var(--bd); font-weight: 700; max-width: 160px; }
.hero-search input { flex: 1; }
.hero-search input:focus, .hero-search select:focus { outline: none; }
.hero-search button { border: 0; border-left: var(--bd); background: var(--tomato); color: #fff; font: inherit; font-weight: 800; padding: 0 24px; cursor: pointer; }
.hero-search button:hover { background: #f2532f; }
.quick-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; align-items: center; font-size: .9rem; }
.quick-tags a { padding: 3px 12px; border: 1.5px solid var(--ink); border-radius: 999px; background: #fff; text-decoration: none; font-weight: 700; }
.quick-tags a:hover { background: var(--sun); color: var(--ink); }
.hero-stats { display: flex; gap: 14px; margin-top: 24px; flex-wrap: wrap; }
.hero-stats div { background: #fff; border: var(--bd); border-radius: 14px; padding: 8px 16px; box-shadow: 3px 3px 0 var(--ink); }
.hero-stats strong { display: block; font-family: var(--font-head); font-size: 1.5rem; line-height: 1.1; }
.hero-stats span { color: var(--muted); font-size: .85rem; font-weight: 700; }

/* Kapak kolajı: bantla yapıştırılmış kâğıtlar */
.collage { position: relative; height: 440px; }
.collage a { position: absolute; width: 230px; background: #fff; border: var(--bd); border-radius: 6px; box-shadow: var(--sh-lg); overflow: hidden; transition: transform .25s; }
.collage a img { width: 100%; aspect-ratio: 210 / 297; object-fit: cover; object-position: top; }
.collage a::before { content: ''; position: absolute; top: -8px; left: 50%; width: 90px; height: 26px; transform: translateX(-50%) rotate(-3deg); background: rgba(255, 201, 60, .75); border: 1px solid rgba(27, 27, 58, .2); z-index: 2; }
.collage a:nth-child(1) { left: 0; top: 50px; transform: rotate(-7deg); }
.collage a:nth-child(2) { left: 32%; top: 0; transform: rotate(3deg); z-index: 2; }
.collage a:nth-child(3) { right: 0; top: 90px; transform: rotate(8deg); }
.collage a:hover { transform: rotate(0) scale(1.04); z-index: 5; }
.doodle { position: absolute; font-size: 2.4rem; animation: bob 4s ease-in-out infinite; }
@keyframes bob { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-10px) rotate(6deg); } }
@media (prefers-reduced-motion: reduce) { .doodle { animation: none; } * { transition: none !important; } }

/* ================= Bölümler ================= */
.section { padding: 44px 0; }
.section-alt { background: #fff; border-top: var(--bd); border-bottom: var(--bd); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.section-head h2 { margin: 0; }
.section-head p { margin: 4px 0 0; color: var(--muted); font-weight: 600; }
.section-head > a { font-weight: 800; text-decoration: none; border-bottom: 2px solid var(--ink); }
.empty { text-align: center; padding: 48px 16px; background: #fff; border: 2px dashed var(--ink); border-radius: var(--radius); color: var(--ink-soft); }

/* Sınıf kartları */
.grade-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grade-card { --c: var(--sky); position: relative; overflow: hidden; display: flex; flex-direction: column; padding: 22px 22px 18px; border-radius: var(--radius); background: var(--c); border: var(--bd); box-shadow: var(--sh); color: var(--ink); text-decoration: none; min-height: 190px; transition: transform .15s, box-shadow .15s; }
.grade-card:hover { transform: translate(-3px, -3px); box-shadow: var(--sh-lg); color: var(--ink); }
.grade-num { position: absolute; right: 10px; bottom: -34px; font-family: var(--font-head); font-size: 9rem; font-weight: 700; color: rgba(255, 255, 255, .55); line-height: 1; -webkit-text-stroke: 2px var(--ink); }
.grade-name { font-family: var(--font-head); font-size: 1.6rem; font-weight: 700; }
.grade-count { font-weight: 800; background: #fff; border: var(--bd); border-radius: 999px; padding: 1px 10px; font-size: .82rem; align-self: flex-start; margin-top: 6px; }
.grade-links { margin-top: auto; display: flex; flex-direction: column; gap: 2px; position: relative; z-index: 1; font-weight: 700; font-size: .9rem; }

/* Okuma yazma treni */
.train { display: flex; gap: 12px; overflow-x: auto; padding: 6px 4px 18px; scroll-snap-type: x mandatory; }
.wagon { --c: var(--tomato); flex: 0 0 auto; scroll-snap-align: start; background: #fff; border: var(--bd); border-radius: 16px 16px 10px 10px; box-shadow: var(--sh); padding: 12px 12px 22px; position: relative; min-width: 220px; }
.wagon::before, .wagon::after { content: ''; position: absolute; bottom: -13px; width: 24px; height: 24px; border-radius: 50%; background: var(--ink); border: 4px solid var(--paper); }
.wagon::before { left: 28px; } .wagon::after { right: 28px; }
.wagon-head { font-family: var(--font-head); font-weight: 700; display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.wagon-head span { background: var(--c); color: #fff; border: var(--bd); border-radius: 999px; padding: 0 10px; font-size: .8rem; }
.letters { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.letter { display: grid; place-items: center; aspect-ratio: 1; border: var(--bd); border-radius: 12px; background: var(--c); color: #fff; font-family: var(--font-head); font-weight: 700; font-size: 1.7rem; text-decoration: none; box-shadow: 2px 2px 0 var(--ink); transition: transform .12s; line-height: 1; }
.letter small { font-size: .9rem; font-family: var(--font-body); }
.letter:hover { color: #fff; transform: translateY(-3px) rotate(-4deg); }
.engine { flex: 0 0 auto; display: grid; place-items: center; font-size: 4.5rem; padding: 0 6px; }

/* Konu çipleri */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { --c: #fff; display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 999px; background: var(--c); color: var(--ink); font-weight: 800; border: var(--bd); text-decoration: none; font-size: .92rem; box-shadow: 2px 2px 0 var(--ink); transition: transform .12s; }
.chip:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); color: var(--ink); }
.chip.active { background: var(--ink); color: #fff; }
.chip small { font-weight: 700; opacity: .7; }
.type-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }
.type-chip { --c: var(--sky); display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 14px; background: #fff; color: var(--ink); font-weight: 800; border: var(--bd); text-decoration: none; box-shadow: 3px 3px 0 var(--ink); transition: transform .12s; }
.type-chip span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 10px; background: color-mix(in srgb, var(--c) 22%, #fff); border: 1.5px solid var(--ink); font-size: 1.2rem; flex-shrink: 0; }
.type-chip:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ink); color: var(--ink); }

.subject-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.subject-card { --c: var(--sky); display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: 14px; background: #fff; color: var(--ink); font-weight: 800; border: var(--bd); text-decoration: none; transition: background .12s; }
.subject-card:hover { background: color-mix(in srgb, var(--c) 14%, #fff); color: var(--ink); }
.subject-icon { width: 40px; height: 40px; flex-shrink: 0; display: grid; place-items: center; border-radius: 10px; background: color-mix(in srgb, var(--c) 22%, #fff); border: 1.5px solid var(--ink); font-size: 1.2rem; }

/* Öne çıkan şerit (belirli günler / matematik köşesi) */
.band { border: var(--bd); border-radius: 24px; box-shadow: var(--sh-lg); padding: 28px; background: var(--c, var(--mint)); position: relative; overflow: hidden; }
.band h2 { margin-bottom: 4px; }
.band-grid { display: grid; grid-template-columns: 1fr 2.2fr; gap: 28px; align-items: center; }
.band .doc-grid { grid-template-columns: repeat(3, 1fr); }

.premium-band { background: var(--ink); color: #fff; border-top: var(--bd); border-bottom: var(--bd); }
.premium-band-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; align-items: center; }
.premium-band h2 { font-size: 1.9rem; color: #fff; }
.premium-band .hero-kicker { color: var(--ink); }
.check-list { list-style: none; padding: 0; margin: 16px 0 24px; }
.check-list li { padding-left: 30px; position: relative; margin-bottom: 8px; font-weight: 600; }
.check-list li::before { content: '✓'; position: absolute; left: 0; top: 1px; width: 21px; height: 21px; display: grid; place-items: center; background: var(--mint); border: 1.5px solid var(--ink); border-radius: 6px; color: var(--ink); font-weight: 900; font-size: .8rem; }

/* ================= Doküman kartları ================= */
.doc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.doc-grid-3 { grid-template-columns: repeat(3, 1fr); }
.doc-grid-2 { grid-template-columns: repeat(2, 1fr); }
.doc-card { position: relative; background: #fff; border: var(--bd); border-radius: var(--radius); box-shadow: var(--sh); overflow: hidden; display: flex; flex-direction: column; transition: transform .15s, box-shadow .15s; color: var(--ink); }
.doc-card:hover { transform: translate(-3px, -3px); box-shadow: var(--sh-lg); }
.doc-thumb { position: relative; aspect-ratio: 4 / 3; display: flex; flex-direction: column; align-items: center; justify-content: center; background: var(--paper-2); overflow: hidden; border-bottom: var(--bd); text-decoration: none; }
.doc-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform .4s; }
.doc-card:hover .doc-thumb img { transform: scale(1.04); }
.thumb-icon { font-size: 2.8rem; }
.thumb-icon.big { font-size: 5rem; }
.ext-label { margin-top: 6px; font-weight: 900; font-size: .78rem; letter-spacing: .08em; padding: 2px 10px; border-radius: 6px; background: #fff; border: 1.5px solid var(--ink); }
.ext-pdf { background: #ffe1da; } .ext-doc { background: #dce9ff; } .ext-ppt { background: #ffe7cc; }
.ext-xls { background: #d9f5e6; } .ext-zip { background: #ece1ff; } .ext-img { background: #ffe3ec; }
.badge { position: absolute; top: 10px; left: 10px; font-size: .74rem; font-weight: 900; padding: 2px 10px; border-radius: 999px; border: 1.5px solid var(--ink); z-index: 1; }
.badge-premium { background: var(--sun); color: var(--ink); }
.badge-free { background: #fff; color: var(--leaf); }
.badge-ext { left: auto; right: 10px; background: #fff; color: var(--ink); }
.doc-body { padding: 12px 14px 14px; display: flex; flex-direction: column; flex: 1; }
.doc-body h3 { font-size: 1rem; margin: 8px 0 10px; font-family: var(--font-body); font-weight: 800; line-height: 1.35; }
.doc-body h3 a { color: var(--ink); text-decoration: none; }
.doc-body h3 a::after { content: ''; position: absolute; inset: 0; z-index: 0; }
.doc-tags { display: flex; flex-wrap: wrap; gap: 6px; position: relative; z-index: 1; }
.tag { --c: var(--sky); display: inline-block; font-size: .74rem; font-weight: 800; padding: 1px 9px; border-radius: 999px; background: color-mix(in srgb, var(--c) 25%, #fff); color: var(--ink); border: 1.5px solid var(--ink); text-decoration: none; }
.tag-soft { background: #fff; }
a.tag:hover { background: var(--sun); color: var(--ink); }
.doc-foot { margin-top: auto; display: flex; justify-content: space-between; color: var(--muted); font-size: .8rem; font-weight: 700; border-top: 1.5px dashed var(--line); padding-top: 8px; }

/* ================= Listeleme ================= */
.page-head { padding: 30px 0 22px; border-bottom: var(--bd); background: #fff; }
.page-head-premium { background: var(--sun); padding: 48px 0; }
.page-head-oy { background: var(--tomato); color: #fff; }
.page-head-oy .breadcrumb, .page-head-oy .breadcrumb a, .page-head-oy p { color: #fff; }
.breadcrumb { font-size: .875rem; color: var(--muted); margin-bottom: 10px; font-weight: 700; }
.breadcrumb a { color: var(--muted); }
.grade-tabs { display: flex; gap: 8px; overflow-x: auto; margin-top: 14px; padding-bottom: 4px; }
.grade-tabs a { padding: 7px 16px; font-weight: 800; color: var(--ink); border: var(--bd); border-radius: 999px; background: #fff; white-space: nowrap; text-decoration: none; }
.grade-tabs a.active, .grade-tabs a:hover { background: var(--ink); color: #fff; }
.filterbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; background: #fff; border: var(--bd); border-radius: var(--radius); box-shadow: var(--sh); padding: 14px; margin: 24px 0 16px; }
.filterbar label { display: flex; flex-direction: column; font-weight: 800; font-size: .78rem; gap: 4px; flex: 1 1 150px; }
.filterbar label.grow { flex: 2 1 220px; }
.filterbar .actions-row { display: flex; gap: 8px; }
.topic-strip { margin-bottom: 22px; }
.topic-strip h3 { font-size: .95rem; margin-bottom: 8px; }
.result-meta { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 14px; font-weight: 700; color: var(--ink-soft); flex-wrap: wrap; }
.listing { padding-bottom: 48px; }
.filters form { position: sticky; top: 130px; background: #fff; padding: 18px; border-radius: var(--radius); border: var(--bd); box-shadow: var(--sh); }

.pagination { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 32px; }
.pagination a, .pagination span { padding: 7px 14px; border-radius: 10px; background: #fff; border: var(--bd); color: var(--ink); font-weight: 800; text-decoration: none; }
.pagination a:hover { background: var(--sun); color: var(--ink); }
.pagination .current { background: var(--ink); color: #fff; }

/* ================= Formlar ================= */
input[type=text], input[type=email], input[type=password], input[type=search], input[type=number], input[type=url], select, textarea {
  font: inherit; padding: 10px 12px; border: var(--bd); border-radius: 12px; background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 3px solid color-mix(in srgb, var(--sky) 45%, transparent); outline-offset: 1px; }
textarea { resize: vertical; }
.form label { display: block; font-weight: 800; margin-bottom: 14px; }
.form label input:not([type=checkbox]), .form label select, .form label textarea { display: block; width: 100%; margin-top: 6px; font-weight: 500; }
.form label small { display: block; font-weight: 500; margin-top: 4px; }
.form .check { display: flex; gap: 10px; align-items: flex-start; font-weight: 700; }
.form .check input { margin-top: 5px; width: 18px; height: 18px; accent-color: var(--tomato); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.card { background: #fff; border-radius: var(--radius); border: var(--bd); box-shadow: var(--sh); padding: 24px; }
.card.no-pad { padding: 0; overflow: hidden; }
.auth-wrap { padding: 48px 16px; display: flex; justify-content: center; }
.auth-card { width: 100%; max-width: 470px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

/* ================= Doküman detay ================= */
.doc-detail { display: grid; grid-template-columns: 1fr 360px; gap: 32px; align-items: start; }
.doc-hero { display: grid; grid-template-columns: 300px 1fr; gap: 28px; align-items: start; margin-bottom: 24px; }
.doc-preview { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 280px; border: var(--bd); border-radius: 6px; overflow: visible; background: #fff; box-shadow: var(--sh-lg); transform: rotate(-2deg); }
.doc-preview::before { content: ''; position: absolute; top: -10px; left: 50%; width: 110px; height: 28px; transform: translateX(-50%) rotate(2deg); background: rgba(255, 201, 60, .8); border: 1px solid rgba(27, 27, 58, .2); z-index: 2; }
.doc-preview img { width: 100%; height: auto; border-radius: 4px; }
.doc-title { margin-bottom: 12px; font-size: clamp(1.5rem, 3vw, 2.2rem); }
.doc-desc { margin-top: 16px; font-size: 1.02rem; color: var(--ink-soft); }
.doc-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
.doc-steps div { background: #fff; border: var(--bd); border-radius: 14px; padding: 10px 12px; font-size: .88rem; font-weight: 700; }
.doc-steps b { display: block; font-family: var(--font-head); font-size: 1.3rem; }
.download-card { position: sticky; top: 140px; }
.file-info { margin: 0 0 12px; }
.file-info div { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1.5px dashed var(--line); }
.file-info dt { color: var(--muted); font-weight: 700; }
.file-info dd { margin: 0; font-weight: 900; }
.lock-box { background: #fff4d1; border: var(--bd); border-radius: 12px; padding: 14px; margin-top: 8px; }
.lock-box p { margin: 6px 0 0; font-size: .9rem; }

/* ================= Hesap ================= */
.account-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 20px; }
.tabs { display: flex; gap: 8px; margin-bottom: 24px; overflow-x: auto; padding-bottom: 4px; }
.tabs a { padding: 8px 16px; font-weight: 800; color: var(--ink); border: var(--bd); border-radius: 999px; background: #fff; white-space: nowrap; text-decoration: none; }
.tabs a.active, .tabs a:hover { background: var(--ink); color: #fff; }
.status-card.is-premium { background: #fff4d1; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; background: #fff; }
.table th, .table td { padding: 11px 14px; text-align: left; border-bottom: 1.5px solid var(--line); vertical-align: middle; }
.table th { font-size: .76rem; text-transform: uppercase; letter-spacing: .05em; color: var(--ink); background: var(--paper-2); border-bottom: var(--bd); }
.table td.right, .table th.right { text-align: right; }
.table td.center { text-align: center; }
.status { display: inline-block; padding: 1px 10px; border-radius: 999px; font-size: .76rem; font-weight: 900; border: 1.5px solid var(--ink); }
.status-beklemede { background: #fff4d1; }
.status-onaylandi { background: #d9f5e6; }
.status-reddedildi { background: #ffe1da; }
.badge-inline { display: inline-block; font-size: .7rem; font-weight: 900; padding: 0 8px; border-radius: 999px; margin-left: 4px; border: 1.5px solid var(--ink); }
.badge-inline.premium { background: var(--sun); }
.badge-inline.free { background: #d9f5e6; }
.badge-inline.danger { background: #ffe1da; }

/* ================= Premium ================= */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; margin-bottom: 32px; }
.plan { position: relative; background: #fff; border-radius: var(--radius); border: var(--bd); box-shadow: var(--sh); padding: 28px; display: flex; flex-direction: column; }
.plan .check-list { flex: 1; }
.plan-featured { background: #fff9e6; box-shadow: var(--sh-lg); transform: translateY(-6px); }
.plan-ribbon { position: absolute; top: -14px; left: 50%; transform: translateX(-50%) rotate(-2deg); background: var(--tomato); color: #fff; border: var(--bd); font-weight: 900; font-size: .78rem; padding: 3px 14px; border-radius: 999px; white-space: nowrap; }
.plan-price { margin: 12px 0; }
.plan-price del { color: var(--muted); display: block; font-size: .9rem; }
.plan-price strong { font-family: var(--font-head); font-size: 2.2rem; }
.plan-price span { color: var(--muted); margin-left: 6px; font-weight: 700; }
.compare { margin-bottom: 32px; }
.payment { scroll-margin-top: 140px; }
.steps { padding-left: 20px; }
.steps li { margin-bottom: 6px; }
.bank { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; background: var(--paper-2); border: var(--bd); border-radius: 14px; padding: 16px; margin: 16px 0 24px; }
.bank span { display: block; font-size: .8rem; color: var(--muted); font-weight: 700; }
.iban { cursor: copy; letter-spacing: .03em; }

/* ================= Footer ================= */
.site-footer { background: var(--ink); color: #d6d6e8; padding: 52px 0 0; margin-top: 56px; border-top: var(--bd); position: relative; }
.site-footer::before { content: ''; position: absolute; top: -14px; left: 0; right: 0; height: 14px; background: radial-gradient(circle at 10px 14px, var(--ink) 9px, transparent 10px) repeat-x; background-size: 20px 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.site-footer h4 { color: var(--sun); margin: 0 0 12px; }
.site-footer a { display: block; color: #d6d6e8; margin-bottom: 6px; text-decoration: none; font-weight: 600; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.site-footer a.logo { display: flex; margin-bottom: 12px; }
.site-footer p a { display: inline; }
.muted-light { color: #a5a5c2; }
.footer-bottom { border-top: 1.5px dashed rgba(255, 255, 255, .2); margin-top: 32px; padding-top: 18px; padding-bottom: 22px; font-size: .85rem; color: #a5a5c2; }

/* ================= Okuma yazma sayfası ================= */
.oy-groups { display: grid; gap: 22px; }
.oy-group { --c: var(--tomato); background: #fff; border: var(--bd); border-radius: 22px; box-shadow: var(--sh); padding: 20px; display: grid; grid-template-columns: 220px 1fr; gap: 20px; align-items: start; }
.oy-group-head { background: var(--c); color: #fff; border: var(--bd); border-radius: 16px; padding: 16px; }
.oy-group-head h2 { font-size: 1.3rem; margin: 0 0 6px; color: #fff; }
.oy-group-head .seq { font-family: var(--font-head); font-size: 1.8rem; letter-spacing: .1em; line-height: 1.1; }
.oy-group-head .btn { margin-top: 12px; }
.oy-letters { display: grid; grid-template-columns: repeat(auto-fill, minmax(124px, 1fr)); gap: 10px; }
.oy-letter { border: var(--bd); border-radius: 16px; padding: 10px; display: flex; flex-direction: column; gap: 6px; background: color-mix(in srgb, var(--c) 10%, #fff); }
.oy-letter-top { display: flex; align-items: center; justify-content: space-between; }
.oy-letter-top b { font-family: var(--font-head); font-size: 2.2rem; line-height: 1; }
.oy-letter-top span { font-size: 1.8rem; }
.oy-letter a { display: block; font-size: .82rem; font-weight: 800; text-decoration: none; background: #fff; border: 1.5px solid var(--ink); border-radius: 8px; padding: 3px 8px; }
.oy-letter a:hover { background: var(--sun); color: var(--ink); }
.oy-letter .no { font-size: .72rem; font-weight: 800; color: var(--muted); }

/* ================= Yönetim paneli ================= */
body.admin { background-image: none; }
.admin-layout { display: grid; grid-template-columns: 250px 1fr; min-height: 100vh; }
.admin-side { background: var(--ink); padding: 20px 14px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.admin-side .logo { margin-bottom: 24px; padding: 0 8px; }
.admin-side nav a { display: flex; align-items: center; gap: 6px; padding: 9px 12px; border-radius: 10px; color: #d6d6e8; font-weight: 700; margin-bottom: 2px; text-decoration: none; }
.admin-side nav a:hover, .admin-side nav a.active { background: rgba(255, 255, 255, .1); color: #fff; }
.admin-side hr { border: 0; border-top: 1px dashed rgba(255, 255, 255, .2); margin: 12px 0; }
.count { margin-left: auto; background: var(--sun); color: var(--ink); border-radius: 999px; padding: 0 8px; font-size: .78rem; font-weight: 900; }
.admin-main { padding: 24px 28px 48px; min-width: 0; }
.admin-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.admin-top h1 { margin: 0; font-size: 1.7rem; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; }
.stat { background: #fff; border-radius: var(--radius); border: var(--bd); box-shadow: var(--sh); padding: 16px 18px; color: var(--ink); text-decoration: none; }
.stat span { display: block; color: var(--muted); font-weight: 800; font-size: .82rem; }
.stat strong { display: block; font-family: var(--font-head); font-size: 1.9rem; }
.stat small { color: var(--muted); font-weight: 700; }
.stat-link:hover { transform: translate(-2px, -2px); box-shadow: var(--sh-lg); color: var(--ink); }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.inline-form { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0; }
.inline-form input, .inline-form select { padding: 6px 10px; }
.actions { white-space: nowrap; text-align: right; }
.actions form { display: inline; }
.actions .inline-form { display: inline-flex; flex-wrap: nowrap; }
.table input { padding: 6px 8px; width: 100%; min-width: 80px; }
.table input[type=color] { width: 48px; min-width: 48px; padding: 2px; height: 34px; }
.w-xs { max-width: 70px; min-width: 50px !important; }
.w-sm { max-width: 170px; }
.row-new td { background: #eafaf2; }
.row-muted td { opacity: .55; }
.grid-main-side { display: grid; grid-template-columns: 1fr 320px; gap: 20px; align-items: start; }
.cover-current { display: flex; gap: 16px; align-items: center; }
.cover-current img { width: 120px; border-radius: 8px; border: var(--bd); }
.premium-check { background: #fff4d1; padding: 12px; border-radius: 12px; border: var(--bd); }
.plan-admin-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.row-actions { display: flex; gap: 8px; }

/* ================= Reklam alanları (AdSense uyumlu) ================= */
.ad-header-slot { margin: 14px auto 4px; }
.ad-footer-slot { margin: 28px auto 0; }
.ad-middle-slot { margin: 12px auto; }
.ad-listing-slot { margin-bottom: 20px; }
.ad-banner-wrapper { position: relative; background: #fff; border: 1.5px dashed rgba(27, 27, 58, .35); border-radius: 14px; padding: 8px 12px 12px; text-align: center; }
.ad-label { font-size: .62rem; letter-spacing: .1em; font-weight: 900; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; user-select: none; }
.ad-code-inner { display: flex; justify-content: center; align-items: center; overflow: hidden; min-height: 50px; }
.ad-placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; background: repeating-linear-gradient(45deg, #fffaf0, #fffaf0 10px, #fff3dc 10px, #fff3dc 20px); border-radius: 10px; padding: 14px 12px; color: var(--ink-soft); }
.ad-placeholder .ad-icon { font-size: 1.3rem; }
.ad-placeholder .ad-text { font-size: .86rem; }
.ad-placeholder .ad-note { font-size: .74rem; color: var(--muted); max-width: 480px; }
.ad-header .ad-placeholder { min-height: 80px; }
.ad-dokuman_ici { margin-top: 18px; }
.ad-dokuman_ici .ad-placeholder { min-height: 180px; }
.ad-liste .ad-placeholder, .ad-footer .ad-placeholder { min-height: 90px; }

/* ================= Duyarlı tasarım ================= */
@media (max-width: 1080px) {
  .doc-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-inner, .premium-band-inner, .band-grid { grid-template-columns: 1fr; }
  .collage { height: 330px; max-width: 560px; margin: 0 auto; width: 100%; }
  .collage a { width: 180px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-main-side, .doc-detail { grid-template-columns: 1fr; }
  .download-card { position: static; }
  .grade-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .header-search { order: 3; flex-basis: 100%; max-width: none; }
  .header-top { flex-wrap: wrap; gap: 12px; }
  .header-actions { margin-left: auto; }
  .nav-toggle { display: block; }
  .main-nav { display: none; }
  .main-nav.open { display: block; }
  .nav-inner { flex-direction: column; gap: 4px; }
  .nav-inner .nav-premium { margin-left: 0; }
  .doc-grid, .doc-grid-3, .band .doc-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2, .doc-hero, .oy-group { grid-template-columns: 1fr; }
  .doc-hero .doc-preview { max-width: 280px; margin: 0 auto; }
  .filters form { position: static; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-side { position: static; height: auto; }
  .admin-side nav { display: flex; flex-wrap: wrap; gap: 4px; }
  .admin-side hr { display: none; }
  .admin-main { padding: 16px; }
  .band { padding: 20px; }
}
@media (max-width: 540px) {
  .logo-text { font-size: 1.2rem; }
  .logo-text small { display: none; }
  .header-actions .btn-ghost { display: none; }
  .hero { padding: 28px 0 36px; }
  .doodle { display: none; }
  .hero-search { flex-wrap: wrap; border-radius: 20px; }
  .hero-search select { max-width: none; flex: 1 1 100%; border-right: 0; border-bottom: var(--bd); }
  .hero-search button { padding: 12px 20px; }
  .collage { height: 250px; }
  .collage a { width: 130px; }
  .grade-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .grade-card { min-height: 150px; padding: 16px; }
  .grade-num { font-size: 6rem; bottom: -22px; }
  .grade-links { display: none; }
  .doc-grid, .doc-grid-3, .doc-grid-2, .band .doc-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .doc-body { padding: 10px 10px 12px; }
  .doc-body h3 { font-size: .9rem; }
  .doc-steps { grid-template-columns: 1fr; }
  .footer-grid, .form-row { grid-template-columns: 1fr; }
  .account-head { flex-direction: column; align-items: flex-start; }
}

/* ================= Eğitici Oyunlar Sayfası ================= */
.games-head { background: radial-gradient(circle at 50% 20%, #eff6ff 0%, #f8fafc 100%); }
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 20px;
}
.game-card {
  position: relative;
  background: #ffffff;
  border: 3px solid var(--border);
  border-radius: 24px;
  padding: 30px 24px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.game-card:hover {
  transform: translateY(-6px);
  border-color: var(--c, var(--primary));
  box-shadow: 0 16px 32px -8px rgba(0,0,0,0.12);
  text-decoration: none;
}
.game-card-icon {
  font-size: 4rem;
  margin-bottom: 12px;
  display: inline-block;
  transition: transform 0.2s;
}
.game-card:hover .game-card-icon {
  transform: scale(1.15) rotate(-6deg);
}
.game-card h2 {
  font-size: 1.5rem;
  font-weight: 900;
  margin: 0 0 10px;
  color: #1e293b;
}
.game-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 20px;
  flex: 1;
}
.game-card .btn {
  background: var(--c, var(--primary));
  color: #ffffff;
  border-radius: 12px;
  font-size: 1.1rem;
}
.games-tips {
  background: #f8fafc;
  border-radius: 20px;
  padding: 24px 30px;
  border: 2px solid var(--border);
}
.games-tips h2 {
  font-size: 1.3rem;
  margin-top: 0;
  margin-bottom: 14px;
}

/* ================= Duyuru, çerez bandı, kurumsal sayfalar ================= */
.duyuru-bandi { background: var(--sun); border-bottom: var(--bd); font-weight: 800; text-align: center; padding: 7px 0; font-size: .92rem; }
.duyuru-bandi a { text-decoration: none; }
.footer-social { display: flex; gap: 12px; flex-wrap: wrap; }
.footer-social a { display: inline-block; border: 1.5px solid rgba(255, 255, 255, .35); border-radius: 999px; padding: 2px 12px; }
.footer-bottom a { color: var(--sun); }
.cerez-bandi { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 200; display: flex; justify-content: center; }
.cerez-bandi[hidden], .cerez-bandi [hidden] { display: none !important; }
.cerez-ic { max-width: 760px; width: 100%; background: #fff; border: var(--bd); border-radius: var(--radius); box-shadow: var(--sh-lg); padding: 16px 18px; }
.cerez-ic p { margin: 0 0 10px; font-size: .92rem; }
.cerez-secim { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 10px; font-weight: 700; font-size: .9rem; }
.cerez-secim input { accent-color: var(--tomato); width: 17px; height: 17px; vertical-align: -3px; }
.cerez-btn { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.prose { max-width: 820px; font-size: 1.02rem; }
.prose h2 { font-size: 1.25rem; margin-top: 1.4em; }
.prose table { margin: 10px 0; }
.kunye { display: grid; grid-template-columns: 200px 1fr; gap: 6px 16px; margin: 0; }
.kunye dt { font-weight: 800; color: var(--muted); }
.kunye dd { margin: 0; }

/* ================= Öğretim programı gezgini ================= */
.op-secim { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.op-temalar { display: grid; gap: 16px; }
.op-tema { --c: var(--sky); background: #fff; border: var(--bd); border-radius: var(--radius); box-shadow: var(--sh); overflow: hidden; }
.op-tema > summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; padding: 14px 18px; }
.op-tema > summary::-webkit-details-marker { display: none; }
.op-no { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 14px; background: var(--c); color: #fff; font-family: var(--font-head); font-weight: 700; font-size: 1.3rem; border: var(--bd); }
.op-ad { font-family: var(--font-head); font-weight: 600; font-size: 1.15rem; line-height: 1.25; }
.op-ad small { display: block; font-family: var(--font-body); font-size: .82rem; color: var(--muted); font-weight: 700; margin-top: 2px; }
.op-ok { font-size: 1.3rem; transition: transform .2s; }
.op-tema[open] .op-ok { transform: rotate(180deg); }
.op-icerik { border-top: 1.5px dashed var(--line); padding: 14px 18px 18px; display: grid; gap: 14px; }
.op-cikti { display: grid; grid-template-columns: 110px 1fr; gap: 10px; padding: 7px 10px; border-radius: 10px; background: var(--paper); border: 1.5px solid var(--line); }
.op-cikti code { background: #fff; border: 1.5px solid var(--ink); font-weight: 800; font-size: .8rem; text-align: center; align-self: start; }
.op-not { background: #fff4d1; border: 1.5px solid var(--ink); border-radius: 10px; padding: 8px 12px; font-weight: 700; font-size: .92rem; }
.op-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.op-ozet { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 20px; }
.op-ozet div { background: #fff; border: var(--bd); border-radius: 14px; padding: 10px 14px; }
.op-ozet b { display: block; font-family: var(--font-head); font-size: 1.6rem; }

/* ================= Yönetim paneli: grafikler ve kartlar ================= */
.admin-grup { color: #8f8fb0; font-size: .7rem; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; margin: 14px 12px 4px; }
.admin-main details > summary { cursor: pointer; }
.donem-sec { display: flex; gap: 6px; flex-wrap: wrap; }
.stat .degisim { font-size: .78rem; font-weight: 800; }
.stat .degisim.artis { color: #15803d; }
.stat .degisim.azalis { color: #b91c1c; }
.grafik { position: relative; }
.grafik-alan { display: flex; align-items: flex-end; gap: 3px; height: 180px; border-bottom: 1.5px solid var(--ink); padding-top: 8px; }
.grafik-alan .cubuk { flex: 1; min-width: 4px; background: var(--grafik-renk, #4d96ff); border-radius: 4px 4px 0 0; position: relative; transition: opacity .15s; }
.grafik-alan .cubuk:hover, .grafik-alan .cubuk:focus { opacity: .75; outline: none; }
.grafik-alan .cubuk.bos { background: transparent; }
.grafik-eksen { display: flex; justify-content: space-between; font-size: .72rem; color: var(--muted); font-weight: 700; margin-top: 4px; }
.grafik-ipucu { position: absolute; pointer-events: none; background: var(--ink); color: #fff; font-size: .78rem; font-weight: 700; padding: 4px 8px; border-radius: 8px; white-space: nowrap; transform: translate(-50%, -110%); z-index: 5; }
.yatay-cubuk { display: grid; grid-template-columns: minmax(90px, 32%) 1fr auto; gap: 8px; align-items: center; font-size: .88rem; margin-bottom: 6px; }
.yatay-cubuk .iz { height: 12px; background: var(--paper-2); border-radius: 6px; overflow: hidden; }
.yatay-cubuk .iz span { display: block; height: 100%; background: #4d96ff; border-radius: 6px; }
.yatay-cubuk .ad { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ayar-sekme { display: none; }
.ayar-sekme.aktif { display: block; }
.ayar-alan { display: grid; gap: 4px; margin-bottom: 14px; }
.panel-uyari { background: #fff4d1; border: var(--bd); border-radius: 12px; padding: 10px 14px; font-weight: 600; margin-bottom: 16px; }
.kontrol-listesi { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.kontrol-listesi li { display: flex; gap: 10px; align-items: flex-start; }
.kontrol-listesi li > span { font-size: 1.1rem; line-height: 1.3; }
.kod-onizleme { background: #1b1b3a; color: #9ff0e6; padding: 10px 14px; border-radius: 10px; font-size: .85rem; overflow-x: auto; white-space: pre-wrap; word-break: break-all; }
@media (max-width: 640px) {
  .kunye { grid-template-columns: 1fr; }
  .op-cikti { grid-template-columns: 1fr; }
  .cerez-btn { justify-content: stretch; }
  .cerez-btn .btn { flex: 1 1 45%; }
}