/* Tanıtım sayfası (tanitim.html). Uygulamadan bağımsız; açık/koyu tema: sistem ayarı, üst çubuktaki düğmeyle değiştirilir (data-theme). */
:root {
  --navy: #14275e; --head: #14275e; --accent: #1f5fbf; --soft: #e6eefb; --text: #1c2430; --muted: #5d6b80;
  --line: #e2e5ea; --line-2: #f0f2f5; --bg: #ffffff; --bg2: #f5f7fa; --card: #ffffff; --hdr: rgba(255, 255, 255, .92);
  --bar: #9db9e6; --bar-k: #f2b8b2; --ok: #1e7f4f; --warn: #c27a00; --bad: #b42318; --dot: #e4e7ec;
  --btn-p: #14275e; --btn-p-text: #fff; --btn-p-hover: #1f5fbf;
  --cta-bg: #14275e; --cta-text: #fff; --cta-muted: #c3cde3; --cta-in: #1b3270; --cta-line: #3a4e86; --cta-ph: #94a3c8;
  --shadow: 0 20px 50px rgba(20, 39, 94, .14); --shadow-sm: 0 10px 30px rgba(20, 39, 94, .08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --head: #e6ecf7; --accent: #6ea3ff; --soft: #1d2b44; --text: #e6e9ee; --muted: #98a2b3;
    --line: #2a313c; --line-2: #20262f; --bg: #0f1218; --bg2: #151a22; --card: #161b23; --hdr: rgba(15, 18, 24, .88);
    --bar: #2f4a78; --bar-k: #5a2e2b; --ok: #4cc38a; --warn: #f0b04d; --bad: #f97066; --dot: #2a313c;
    --btn-p: #e6ecf7; --btn-p-text: #0f1218; --btn-p-hover: #6ea3ff;
    --cta-bg: #18233a; --cta-text: #e6ecf7; --cta-muted: #9fb0cf; --cta-in: #0f1218; --cta-line: #2f3d5c; --cta-ph: #6b7a99;
    --shadow: 0 20px 50px rgba(0, 0, 0, .5); --shadow-sm: 0 10px 30px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --head: #e6ecf7; --accent: #6ea3ff; --soft: #1d2b44; --text: #e6e9ee; --muted: #98a2b3;
  --line: #2a313c; --line-2: #20262f; --bg: #0f1218; --bg2: #151a22; --card: #161b23; --hdr: rgba(15, 18, 24, .88);
  --bar: #2f4a78; --bar-k: #5a2e2b; --ok: #4cc38a; --warn: #f0b04d; --bad: #f97066; --dot: #2a313c;
  --btn-p: #e6ecf7; --btn-p-text: #0f1218; --btn-p-hover: #6ea3ff;
  --cta-bg: #18233a; --cta-text: #e6ecf7; --cta-muted: #9fb0cf; --cta-in: #0f1218; --cta-line: #2f3d5c; --cta-ph: #6b7a99;
  --shadow: 0 20px 50px rgba(0, 0, 0, .5); --shadow-sm: 0 10px 30px rgba(0, 0, 0, .35);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.55; }
a { color: inherit; text-decoration: none; }
.w { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.logo { width: 30px; height: 30px; color: var(--head); }
.logo .v { fill: var(--accent); }

header { position: sticky; top: 0; background: var(--hdr); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); z-index: 5; }
header .w { display: flex; align-items: center; gap: 12px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--head); margin-right: 16px; }
nav { display: flex; gap: 22px; font-size: 14.5px; color: var(--muted); margin-left: auto; margin-right: 8px; }
nav a:hover { color: var(--head); }
.tema { width: 38px; height: 38px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--muted); cursor: pointer; display: grid; place-items: center; }
.tema:hover { color: var(--head); }
.tema svg { width: 18px; height: 18px; }
.tema .ay { display: none; }
:root[data-theme="dark"] .tema .gunes { display: none; }
:root[data-theme="dark"] .tema .ay { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .tema .gunes { display: none; }
  :root:not([data-theme="light"]) .tema .ay { display: block; }
}

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 18px; border-radius: 8px; font: inherit; font-weight: 600; font-size: 14.5px; border: 1px solid transparent; cursor: pointer; white-space: nowrap; }
.btn.p { background: var(--btn-p); color: var(--btn-p-text); }
.btn.p:hover { background: var(--btn-p-hover); color: #fff; }
.btn.g { border-color: var(--line); color: var(--head); background: var(--card); }
.btn.g:hover { border-color: var(--accent); }

.hero { padding: 76px 0 48px; background: linear-gradient(180deg, var(--bg2), var(--bg)); }
.hero .w { display: grid; grid-template-columns: 1fr 1.15fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-block; font-size: 12.5px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); background: var(--soft); padding: 5px 10px; border-radius: 99px; }
h1 { font-size: 44px; line-height: 1.12; margin: 16px 0 18px; color: var(--head); letter-spacing: -.02em; }
h1 em { font-style: normal; color: var(--accent); }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 28px; max-width: 520px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.trust { margin-top: 28px; font-size: 13px; color: var(--muted); display: flex; gap: 18px; flex-wrap: wrap; }
.trust b { color: var(--head); }

/* Uygulama maketi */
.app { background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; font-size: 12px; min-width: 0; }
.app .bar { display: flex; gap: 6px; align-items: center; padding: 9px 12px; border-bottom: 1px solid var(--line); background: var(--bg2); }
.app .bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--dot); }
.app .bar span { margin-left: 8px; color: var(--muted); }
.app .tabs { display: flex; gap: 2px; padding: 0 10px; border-bottom: 1px solid var(--line); color: var(--muted); overflow: hidden; }
.app .tabs span { padding: 8px 10px; white-space: nowrap; }
.app .tabs .on { color: var(--accent); border-bottom: 2px solid var(--accent); font-weight: 600; }
.gantt { display: grid; grid-template-columns: 150px 1fr; }
.gantt .n { padding: 7px 10px; border-bottom: 1px solid var(--line-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gantt .t { position: relative; border-bottom: 1px solid var(--line-2); background: repeating-linear-gradient(90deg, transparent 0 39px, var(--line-2) 39px 40px); }
.gantt .b { position: absolute; top: 6px; height: 14px; border-radius: 4px; background: var(--bar); }
.gantt .b s { position: absolute; inset: 0 auto 0 0; border-radius: 4px; background: var(--accent); }
.gantt .b.k { background: var(--bar-k); }
.gantt .b.k s { background: var(--bad); }
.gantt .h { font-weight: 600; color: var(--head); background: var(--bg2); }
.gantt .today { position: absolute; top: 0; bottom: 0; left: 46%; width: 2px; background: var(--warn); }
.app .leg { display: flex; gap: 14px; padding: 8px 12px; color: var(--muted); border-top: 1px solid var(--line); }
.app .leg i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }

section { padding: 80px 0; }
.sec-h { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.sec-h h2 { font-size: 32px; color: var(--head); margin: 10px 0 12px; letter-spacing: -.01em; line-height: 1.2; }
.sec-h p { color: var(--muted); font-size: 16.5px; margin: 0; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 24px; background: var(--card); }
.card .ic { width: 40px; height: 40px; border-radius: 10px; background: var(--soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 14px; }
.card .ic svg { width: 20px; height: 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; color: var(--head); }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

.steps { background: var(--bg2); }
.st { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.st div { position: relative; padding-top: 52px; }
.st div::before { counter-increment: s; content: counter(s); position: absolute; top: 0; left: 0; width: 38px; height: 38px; border-radius: 50%; background: var(--btn-p); color: var(--btn-p-text); display: grid; place-items: center; font-weight: 700; }
.st h3 { margin: 0 0 6px; font-size: 16px; color: var(--head); }
.st p { margin: 0; color: var(--muted); font-size: 14.5px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split h2 { font-size: 30px; color: var(--head); margin: 10px 0 14px; line-height: 1.2; }
.split ul { list-style: none; padding: 0; margin: 0; }
.split li { padding: 8px 0 8px 28px; position: relative; color: var(--muted); }
.split li::before { content: ""; position: absolute; left: 0; top: 12px; width: 18px; height: 18px; border-radius: 50%; background: var(--soft); }
.split li::after { content: ""; position: absolute; left: 6px; top: 16px; width: 4px; height: 8px; border: solid var(--accent); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.split li b { color: var(--text); }
.split.ters > :first-child { order: 2; }

.ted { border: 1px solid var(--line); border-radius: 12px; padding: 18px; background: var(--card); box-shadow: var(--shadow-sm); font-size: 13px; min-width: 0; }
.ted .row { display: grid; grid-template-columns: 1.4fr repeat(5, 1fr); gap: 6px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line-2); }
.ted .row:last-child { border: 0; }
.ted .hd { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .03em; }
.dot { height: 8px; border-radius: 4px; background: var(--dot); }
.dot.ok { background: var(--ok); }
.dot.w { background: var(--warn); }
.dot.x { background: var(--bad); }

.takip { border: 1px solid var(--line); border-radius: 12px; background: var(--card); box-shadow: var(--shadow-sm); font-size: 13px; overflow: hidden; min-width: 0; }
.takip table { width: 100%; border-collapse: collapse; }
.takip th, .takip td { padding: 9px 12px; border-bottom: 1px solid var(--line-2); text-align: right; white-space: nowrap; }
.takip th:first-child, .takip td:first-child { text-align: left; white-space: normal; }
.takip th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .03em; font-weight: 600; background: var(--bg2); }
.takip tr:last-child td { border: 0; }
.takip .gun { color: var(--accent); font-weight: 600; }
.pbar { display: inline-block; width: 60px; height: 6px; border-radius: 3px; background: var(--dot); vertical-align: middle; margin-left: 6px; overflow: hidden; }
.pbar i { display: block; height: 100%; background: var(--ok); }

.form { background: var(--cta-bg); color: var(--cta-text); border-radius: 16px; padding: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.form h2 { margin: 0 0 12px; font-size: 30px; line-height: 1.2; }
.form p { color: var(--cta-muted); margin: 0 0 12px; }
.form form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-content: start; }
.form input, .form textarea { width: 100%; padding: 11px 12px; border-radius: 8px; border: 1px solid var(--cta-line); background: var(--cta-in); color: var(--cta-text); font: inherit; }
.form input:focus, .form textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.form textarea { grid-column: 1 / -1; min-height: 90px; resize: vertical; }
.form input::placeholder, .form textarea::placeholder { color: var(--cta-ph); }
.form .btn { grid-column: 1 / -1; background: #fff; color: #14275e; }
.form .btn:hover { background: var(--accent); color: #fff; }
.form .btn:disabled { opacity: .6; cursor: default; }
.form .not { grid-column: 1 / -1; font-size: 12.5px; color: var(--cta-muted); margin: 0; }
.form .durum { grid-column: 1 / -1; margin: 0; padding: 10px 12px; border-radius: 8px; font-size: 14px; }
.form .durum.ok { background: rgba(76, 195, 138, .16); color: #b9f0d3; }
.form .durum.bad { background: rgba(249, 112, 102, .16); color: #ffd0cb; }
.gizli { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; background: var(--bg2); }
footer a:hover { color: var(--head); }
.alt-k { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; padding: 48px 0 32px; }
.alt-k p { margin: 10px 0 0; max-width: 300px; }
.alt-k h4 { margin: 4px 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--head); }
.alt-k div > a:not(.brand) { display: block; padding: 3px 0; }
.alt-a { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 18px 0 28px; border-top: 1px solid var(--line); font-size: 13px; }

/* SSS */
.sss { max-width: 820px; }
.sss details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; margin-bottom: 10px; }
.sss summary { cursor: pointer; padding: 16px 48px 16px 20px; font-weight: 600; color: var(--head); list-style: none; position: relative; }
.sss summary::-webkit-details-marker { display: none; }
.sss summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 400; color: var(--accent); }
.sss details[open] summary::after { content: "−"; }
.sss details p { margin: 0; padding: 0 20px 18px; color: var(--muted); }
.sss a, .yasal a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

/* Yasal sayfalar ve 404 */
.yasal { padding: 56px 0 80px; }
.yasal .w { max-width: 820px; }
.yasal h1 { font-size: 36px; margin: 12px 0 6px; }
.yasal .tarih { color: var(--muted); font-size: 14px; margin: 0 0 32px; }
.yasal h2 { font-size: 20px; color: var(--head); margin: 36px 0 10px; }
.yasal h3 { font-size: 16px; color: var(--head); margin: 22px 0 6px; }
.yasal p, .yasal li { color: var(--text); font-size: 15.5px; }
.yasal ul, .yasal ol { padding-left: 22px; }
.yasal li { margin: 4px 0; }
.yasal table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14px; }
.yasal th, .yasal td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.yasal th { background: var(--bg2); color: var(--head); }
.yasal .kutu { border: 1px solid var(--line); background: var(--bg2); border-radius: 10px; padding: 16px 20px; margin: 16px 0; }
.yasal .kutu dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; }
.yasal .kutu dt { color: var(--muted); }
.yasal .kutu dd { margin: 0; }
.yasal .icindekiler { columns: 2; font-size: 14.5px; margin: 0 0 8px; }
.tablo-kap { overflow-x: auto; }
.bulunamadi { min-height: calc(100vh - 64px - 260px); display: grid; place-items: center; text-align: center; padding: 64px 0; }
.bulunamadi .kod { font-size: 96px; font-weight: 800; line-height: 1; color: var(--accent); letter-spacing: -.04em; }
.bulunamadi h1 { font-size: 30px; margin: 12px 0 10px; }
.bulunamadi p { color: var(--muted); margin: 0 0 24px; }
.bulunamadi .cta { justify-content: center; }

/* Çerez bilgilendirme bandı (tanitim.js) */
.cerez-bant { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 20; max-width: 560px; margin-left: auto; background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 16px 18px; display: flex; gap: 14px; align-items: center; font-size: 14px; }
.cerez-bant p { margin: 0; color: var(--muted); }
.cerez-bant a { color: var(--accent); text-decoration: underline; }
.cerez-bant .btn { padding: 8px 16px; flex: none; }

@media (max-width: 900px) {
  .hero .w, .split, .form { grid-template-columns: 1fr; }
  .split.ters > :first-child { order: 0; }
  .grid, .st { grid-template-columns: 1fr 1fr; }
  nav { display: none; }
  h1 { font-size: 34px; }
  .form { padding: 28px; }
  .hero { padding-top: 48px; }
}
@media (max-width: 560px) {
  .w { padding: 0 16px; }
  .grid, .st, .form form { grid-template-columns: 1fr; }
  .gantt { grid-template-columns: 108px 1fr; }
  .brand { margin-right: auto; }
  .giris-btn { display: none; }
  section { padding: 56px 0; }
  .sec-h h2 { font-size: 26px; }
  .ted .row { grid-template-columns: 1.6fr repeat(5, 1fr); font-size: 12px; }
  .ted .hd { font-size: 9px; letter-spacing: 0; }
  .takip .pbar { display: none; }
}
@media (max-width: 900px) {
  .alt-k { grid-template-columns: 1fr 1fr; }
  .alt-k > :first-child { grid-column: 1 / -1; }
  .yasal .icindekiler { columns: 1; }
}
@media (max-width: 560px) {
  .yasal h1 { font-size: 28px; }
  .yasal .kutu dl { grid-template-columns: 1fr; gap: 0 0; }
  .yasal .kutu dd { margin-bottom: 8px; }
  .cerez-bant { flex-direction: column; align-items: stretch; }
  .bulunamadi .kod { font-size: 72px; }
}