/* ============ Tokenlar ============ */
:root {
  --bg: #f6f6f4;
  --surface: #ffffff;
  --surface-2: #f0f0ed;
  --line: #e4e4df;
  --text: #16171a;
  --muted: #6b6d72;
  --accent: #2f5bea;
  --accent-ink: #ffffff;
  --accent-soft: #e8eefd;
  --danger: #d6372b;
  --danger-soft: #fdecea;
  --ok: #18865a;
  --ok-soft: #e5f5ee;
  --shadow: 0 1px 2px rgba(16,18,24,.04), 0 8px 24px -12px rgba(16,18,24,.12);
  --radius: 14px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0b0d10;
  --surface: #13161b;
  --surface-2: #1a1e24;
  --line: #262b33;
  --text: #eceef1;
  --muted: #8b919b;
  --accent: #6b8cff;
  --accent-ink: #0b0d10;
  --accent-soft: #1a2340;
  --danger: #ff6b5e;
  --danger-soft: #3a1714;
  --ok: #3ccf8e;
  --ok-soft: #0f2b20;
  --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 12px 32px -16px rgba(0,0,0,.6);
  color-scheme: dark;
}

/* ============ Temel ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html.noscroll { overflow: hidden; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 var(--font); letter-spacing: -.005em;
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s, color .25s;
  min-height: 100vh; min-height: 100dvh;
}
a { color: var(--accent); text-decoration: none; }
svg { display: block; }
code, .mono { font-family: var(--mono); font-size: .92em; letter-spacing: 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.h1 { font-size: clamp(26px, 5vw, 34px); line-height: 1.15; font-weight: 700; letter-spacing: -.03em; margin: 0 0 6px; }
.h2 { font-size: 20px; font-weight: 650; letter-spacing: -.02em; margin: 0; }
.h3 { font-size: 16px; font-weight: 600; margin: 0; }
.grow { flex: 1; min-width: 0; }
.spacer { flex: 1; }
.row { display: flex; align-items: center; gap: 8px; }
.row.gap { gap: 10px; justify-content: flex-end; margin-top: 18px; }
.stack { display: grid; gap: 18px; }
.inline { display: inline; margin: 0; }
[hidden] { display: none !important; }

.wrap { width: 100%; max-width: 920px; margin: 0 auto; padding: 0 16px; }
.narrowwrap { max-width: 640px; padding-top: 24px; padding-bottom: 48px; }

/* ============ Kart / form ============ */
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px); padding: 24px; box-shadow: var(--shadow);
}
.card.narrow { width: 100%; max-width: 420px; }
body.center { display: grid; place-items: center; padding: 20px 16px; }

.lbl { display: block; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 18px 0 8px; }
.input {
  width: 100%; height: 46px; padding: 0 14px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--surface-2); color: var(--text);
  font: inherit; font-size: 16px; outline: none; transition: border-color .15s, box-shadow .15s, background .15s;
  -webkit-appearance: none; appearance: none;
}
textarea.input { height: auto; padding: 12px 14px; resize: none; }
select.input { background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 36px; }
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); background: var(--surface); }
.input::placeholder { color: var(--muted); opacity: .7; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 18px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--surface); color: var(--text); font: 600 15px var(--font); cursor: pointer;
  transition: transform .08s, background .15s, opacity .15s; white-space: nowrap;
}
.btn:active { transform: scale(.98); }
.btn.primary { background: var(--text); color: var(--bg); border-color: transparent; }
:root[data-theme="dark"] .btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { opacity: .9; }
.btn.block { width: 100%; margin-top: 14px; }
.btn:disabled { opacity: .6; cursor: wait; }
.link { background: none; border: 0; color: var(--accent); font: 500 13px var(--font); cursor: pointer; padding: 0; }

.icon-btn {
  width: 40px; height: 40px; display: grid; place-items: center; flex: none;
  border-radius: 11px; border: 1px solid transparent; background: transparent; color: var(--text);
  cursor: pointer; transition: background .15s, border-color .15s;
}
.icon-btn:hover { background: var(--surface-2); border-color: var(--line); }
.icon-btn svg, .theme-btn svg { width: 19px; height: 19px; }
.theme-btn.floating {
  position: fixed; top: max(14px, env(safe-area-inset-top)); right: 14px;
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 12px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer;
}

.alert { padding: 12px 14px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--line); font-size: 14px; margin: 14px 0; }
.alert.err { background: var(--danger-soft); border-color: transparent; color: var(--danger); }
.alert.ok { background: var(--ok-soft); border-color: transparent; color: var(--ok); }
.alert.ok a { color: inherit; font-weight: 600; }
.warn { color: var(--danger); font-size: 14px; margin-top: 16px; }

/* ============ Giriş ============ */
.brand { display: flex; align-items: center; gap: 14px; color: var(--text); }
.brand.sm { gap: 10px; font-weight: 600; font-size: 15px; }
.logo {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; flex: none;
  background: var(--text); color: var(--bg);
}
.logo svg { width: 24px; height: 24px; }
.brand.sm .logo { width: 34px; height: 34px; border-radius: 10px; }
.brand.sm .logo svg { width: 19px; height: 19px; }
.login .brand { margin-bottom: 8px; }
.keyinput { text-align: center; font-size: 15px; letter-spacing: .06em; height: 52px; text-transform: uppercase; }
.keybox {
  padding: 16px; border-radius: 12px; background: var(--accent-soft); color: var(--accent);
  font-size: 17px; text-align: center; letter-spacing: .06em; word-break: break-all; user-select: all;
}
.foot { display: flex; gap: 8px; align-items: flex-start; margin: 20px 0 0; line-height: 1.45; }
.foot svg { flex: none; margin-top: 2px; }

/* ============ Üst bar ============ */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(14px); backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top);
}
.topbar .row { height: 60px; gap: 4px; }
.timer {
  display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 10px; margin-right: 4px;
  border-radius: 999px; background: var(--surface-2); color: var(--muted); font-size: 13px;
  transition: background .2s, color .2s;
}
.timer svg { width: 15px; height: 15px; }
.timer.danger { background: var(--danger-soft); color: var(--danger); }
.progress { height: 2px; background: transparent; overflow: hidden; }
.progress span { display: block; height: 100%; background: var(--accent); transform-origin: left; transition: transform 1s linear; }

/* ============ Panel ============ */
.hero { padding: 32px 0 18px; }
.searchbar { position: relative; display: flex; gap: 8px; }
.searchbar .input { height: 52px; padding-left: 44px; font-size: 16px; border-radius: 14px; background: var(--surface); }
.searchbar .btn { height: 52px; border-radius: 14px; }
.sicon { position: absolute; left: 15px; top: 50%; width: 19px; height: 19px; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
input[type="search"]::-webkit-search-cancel-button { -webkit-appearance: none; }

.classes { margin-top: 22px; }
.classes-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.classes-head .lbl { margin: 0; }
.grid-classes { display: grid; gap: 8px; }
.grade-row { display: grid; grid-template-columns: 36px repeat(5, 1fr); gap: 8px; align-items: center; }
.grade { font: 600 13px var(--mono); color: var(--muted); }
.chip {
  display: flex; align-items: center; justify-content: space-between; gap: 6px;
  height: 44px; padding: 0 12px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--surface); color: var(--text); font: inherit; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, transform .08s;
}
.chip:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.chip:active { transform: scale(.97); }
.chip b { font-size: 15px; font-weight: 650; }
.chip small { font: 500 12px var(--mono); color: var(--muted); }
.chip.zero small { opacity: .5; }
.chip.active { background: var(--text); border-color: var(--text); color: var(--bg); }
.chip.active small { color: inherit; opacity: .7; }
:root[data-theme="dark"] .chip.active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.chip.static { cursor: default; height: 36px; gap: 10px; }
.kv-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.tag { font-size: 13px; padding: 6px 10px; border-radius: 8px; background: var(--surface-2); color: var(--muted); }
.tag b { color: var(--text); font-weight: 600; }

.results { margin: 26px 0 60px; }
.res-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.pill { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.list { list-style: none; margin: 0; padding: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.list li + li { border-top: 1px solid var(--line); }
.item {
  width: 100%; display: flex; align-items: center; gap: 12px; padding: 12px 14px;
  background: none; border: 0; color: inherit; font: inherit; text-align: left; cursor: pointer;
  transition: background .12s;
}
.item:hover { background: var(--surface-2); }
.item.loading { opacity: .5; }
.item .name { display: block; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item .meta { display: block; font-size: 13px; color: var(--muted); }
.chev { width: 18px; height: 18px; color: var(--muted); flex: none; }
.avatar {
  width: 52px; height: 52px; border-radius: 14px; flex: none; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 18px; letter-spacing: -.02em;
}
.avatar.sm { width: 38px; height: 38px; border-radius: 11px; font-size: 14px; }

.empty { display: grid; place-items: center; gap: 8px; padding: 48px 16px; color: var(--muted); text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); }
.empty svg { width: 30px; height: 30px; opacity: .6; }
.empty p { margin: 0; }
.skeleton { display: grid; gap: 1px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.skeleton div { height: 62px; background: linear-gradient(90deg, var(--surface) 0%, var(--surface-2) 50%, var(--surface) 100%); background-size: 200% 100%; animation: sh 1.1s infinite; }
@keyframes sh { to { background-position: -200% 0; } }

/* ============ Detay paneli (mobilde alttan açılır) ============ */
.sheet { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 16px; }
.sheet-bg { position: absolute; inset: 0; background: rgba(8,10,14,.45); opacity: 0; transition: opacity .2s; }
.sheet-panel {
  position: relative; width: 100%; max-width: 520px; max-height: 86vh; overflow: auto;
  background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 20px;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,.4);
  transform: translateY(12px) scale(.98); opacity: 0; transition: transform .22s cubic-bezier(.2,.8,.2,1), opacity .2s;
}
.sheet.open .sheet-bg { opacity: 1; }
.sheet.open .sheet-panel { transform: none; opacity: 1; }
.sheet-grip { display: none; }
.sheet-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.sheet-head .muted { margin: 2px 0 0; font-size: 14px; }
.fields { margin: 0 0 4px; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.fields > div { background: var(--surface); padding: 12px 14px; min-width: 0; }
.fields dt { font-size: 12px; color: var(--muted); margin-bottom: 2px; }
.fields dd { margin: 0; font-weight: 550; overflow-wrap: anywhere; }
.fields > div:last-child:nth-child(odd) { grid-column: 1 / -1; }

/* ============ İçe aktarma ============ */
.drop {
  position: relative; display: grid; place-items: center; gap: 10px; text-align: center;
  padding: 32px 16px; border: 1.5px dashed var(--line); border-radius: 16px; cursor: pointer;
  color: var(--muted); transition: border-color .15s, background .15s;
}
.drop svg { width: 34px; height: 34px; }
.drop b { color: var(--text); }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop.over, .drop:hover { border-color: var(--accent); background: var(--accent-soft); }
.drop.has { border-style: solid; border-color: var(--accent); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; margin-top: 14px; }
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th, .tbl td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.tbl th { font-size: 12px; color: var(--muted); font-weight: 600; background: var(--surface-2); }
.tbl tr:last-child td { border-bottom: 0; }

/* ============ Toast ============ */
.toast {
  position: fixed; left: 50%; bottom: max(20px, env(safe-area-inset-bottom)); z-index: 60;
  transform: translate(-50%, 20px); opacity: 0; transition: .25s;
  background: var(--text); color: var(--bg); padding: 12px 16px; border-radius: 12px; font-size: 14px; font-weight: 500;
  box-shadow: 0 12px 30px -10px rgba(0,0,0,.35); max-width: calc(100% - 32px);
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }


/* ============ Dönem seçimi (giriş) ============ */
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px; padding: 4px; border-radius: 13px; background: var(--surface-2); border: 1px solid var(--line); }
.seg label { position: relative; cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: grid; place-items: center; height: 40px; border-radius: 10px; font: 600 15px var(--mono); color: var(--muted); transition: background .15s, color .15s, box-shadow .15s; }
.seg input:checked + span { background: var(--surface); color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,.08), 0 0 0 1px var(--line); }
.seg input:focus-visible + span { box-shadow: 0 0 0 3px var(--accent-soft), 0 0 0 1px var(--accent); }
.term-pill { font: 600 12px var(--mono); padding: 5px 9px; border-radius: 8px; background: var(--accent-soft); color: var(--accent); margin-left: 6px; white-space: nowrap; }

/* ============ Sorgu formu ============ */
.qform { padding: 18px; }
.qgrid { display: grid; grid-template-columns: 1.1fr .8fr 1.5fr 1.5fr 1fr; gap: 12px; }
.qgrid .lbl { margin: 0 0 7px; }
.qactions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.qactions .btn.primary { min-width: 140px; }

/* ============ Sonuç listesi ============ */
.res-head .chips { display: flex; flex-wrap: wrap; gap: 6px; min-width: 0; }
.tablecard { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.rlist { list-style: none; margin: 0; padding: 0; }
.rlist li + li { border-top: 1px solid var(--line); }
.rrow { display: grid; grid-template-columns: 84px 84px 1fr 1fr 20px; align-items: center; gap: 12px; padding: 11px 16px; }
.rhead { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; background: var(--surface-2); border-bottom: 1px solid var(--line); padding-top: 10px; padding-bottom: 10px; }
button.rrow { width: 100%; border: 0; background: none; color: inherit; font: inherit; text-align: left; cursor: pointer; transition: background .12s; }
button.rrow:hover, button.rrow:focus-visible { background: var(--surface-2); outline: none; }
button.rrow.loading { opacity: .5; }
.c-name { display: contents; }
.c-first, .c-last { font-weight: 600; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.c-no { color: var(--muted); }
.cls { display: inline-block; font: 600 13px var(--mono); padding: 3px 8px; border-radius: 7px; background: var(--surface-2); border: 1px solid var(--line); }
.sec-title { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 18px 0 8px; }

@media (max-width: 760px) {
  .qgrid { grid-template-columns: 1fr 1fr; }
  .f-first, .f-last { grid-column: span 1; }
  .f-no { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .qform { padding: 16px; }
  .qactions { display: grid; grid-template-columns: 1fr 2fr; }
  .term-pill { margin-left: 2px; }
  .rhead { display: none; }
  .rrow { grid-template-columns: auto 1fr 18px; grid-template-areas: "name name chev" "cls no chev"; row-gap: 3px; column-gap: 8px; padding: 12px 14px; }
  .c-name { display: block; grid-area: name; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .c-first, .c-last { display: inline; }
  .c-cls { grid-area: cls; }
  .c-no { grid-area: no; font-size: 13px; }
  .c-no::before { content: "No "; font-family: var(--font); }
  .cls { font-size: 12px; padding: 1px 6px; }
  .rrow .chev { grid-area: chev; }
  .topbar .row { gap: 2px; }
  .topbar .icon-btn { width: 36px; height: 36px; }
  .timer { padding: 0 8px; margin-right: 2px; }
  .timer svg { display: none; }
}

/* ============ Mobil ============ */
@media (max-width: 640px) {
  .hide-sm { display: none; }
  .keyinput { letter-spacing: 0; padding: 0 8px; font-size: 16px; }
  .card { padding: 20px; }
  .hero { padding: 22px 0 14px; }
  .searchbar .btn { padding: 0 14px; }
  .grade-row { grid-template-columns: 26px repeat(5, 1fr); gap: 6px; }
  .grid-classes { gap: 6px; }
  .chip { flex-direction: column; justify-content: center; gap: 0; height: 52px; padding: 0 4px; }
  .chip small { font-size: 11px; }
  .sheet { place-items: end stretch; padding: 0; }
  .sheet-panel { max-width: none; border-radius: 22px 22px 0 0; max-height: 88vh; padding: 10px 16px calc(20px + env(safe-area-inset-bottom)); transform: translateY(100%); }
  .sheet-grip { display: block; width: 38px; height: 5px; border-radius: 9px; background: var(--line); margin: 0 auto 12px; }
  .fields { grid-template-columns: 1fr; }
  .fields > div:last-child:nth-child(odd) { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* Radyo seçenekleri */
.radio { display: flex; align-items: center; gap: 10px; padding: 10px 0; cursor: pointer; font-size: 15px; }
.radio input { width: 18px; height: 18px; accent-color: var(--accent); margin: 0; flex: none; }

.cls.x { background: var(--danger-soft); border-color: transparent; color: var(--danger); }
.form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.form-grid .lbl { margin: 0 0 7px; }
.form-grid .span2 { grid-column: span 2; }
.form-grid .span3 { grid-column: 1 / -1; }
.req { color: var(--danger); }
.hint { font-size: 12px; color: var(--muted); margin-top: 5px; }
fieldset.box { border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px 16px; margin: 0; }
fieldset.box legend { padding: 0 6px; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.copy-btn { margin-left: auto; }
.mini-list { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.mini-list li { display: flex; align-items: center; gap: 10px; padding: 10px 12px; font-size: 14px; }
.mini-list li + li { border-top: 1px solid var(--line); }
.mini-list .nm { font-weight: 600; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.btn.sm { height: 32px; padding: 0 10px; font-size: 13px; border-radius: 9px; }
.btn.danger { color: var(--danger); }
@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .form-grid .span2 { grid-column: 1 / -1; }
}

.hint.bad { color: var(--danger); }
.hint.flat { margin: 0; }
.copyrow { margin: -4px 0 10px; flex-wrap: wrap; }
.mt { margin-top: 24px; }
.input.bad { border-color: var(--danger); }