/* ============================================================
   NeYakar — Tasarım Sistemi
   ============================================================ */
:root {
  /* Yüzeyler & metin (açık tema) */
  --bg: #f6f7f9;
  --bg-soft: #eef0f4;
  --surface: #ffffff;
  --surface-2: #f7f8fa;
  --surface-3: #f1f2f6;
  --border: #e6e8ee;
  --border-strong: #d5d9e2;
  --text: #14161d;
  --text-soft: #4a4f5e;
  --text-muted: #8a90a1;

  /* Marka & vurgu */
  --primary: #4f46e5;
  --primary-600: #4338ca;
  --primary-700: #3730a3;
  --primary-soft: #eef0fe;
  --accent: #0d9488;      /* geçiş ücretleri */
  --accent-soft: #d7f0ec;
  --success: #059669;

  --ring: color-mix(in srgb, var(--primary) 28%, transparent);
  --shadow-sm: 0 1px 2px rgba(16, 20, 40, 0.04), 0 1px 3px rgba(16, 20, 40, 0.06);
  --shadow: 0 4px 12px -4px rgba(16, 20, 40, 0.10), 0 8px 28px -12px rgba(16, 20, 40, 0.12);
  --shadow-lg: 0 12px 32px -12px rgba(16, 20, 40, 0.18);

  --radius: 16px;
  --radius-sm: 11px;
  --radius-xs: 9px;

  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

:root[data-theme="dark"] {
  --bg: #0a0b10;
  --bg-soft: #0e1017;
  --surface: #14161f;
  --surface-2: #1a1d28;
  --surface-3: #20232f;
  --border: #262a37;
  --border-strong: #333849;
  --text: #eef0f6;
  --text-soft: #b3b8c7;
  --text-muted: #757c8f;

  --primary: #7c74ff;
  --primary-600: #6d64f5;
  --primary-700: #5b52e0;
  --primary-soft: #1c1b3a;
  --accent: #2dd4bf;
  --accent-soft: #10312d;
  --success: #34d399;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 8px 28px -12px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 20px 48px -16px rgba(0, 0, 0, 0.7);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.55;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Arka plan dokusu */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 500px at 85% -8%, color-mix(in srgb, var(--primary) 14%, transparent), transparent 70%),
    radial-gradient(700px 420px at 5% 0%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 65%);
}

.icon {
  width: 20px; height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 auto;
}

/* ---------- Topbar ---------- */
.topbar {
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.brand-mark {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  color: #fff;
  background: linear-gradient(145deg, var(--primary), var(--primary-700));
  border-radius: 12px;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.2);
}
.brand-mark svg { width: 24px; height: 24px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 800; font-size: 18px; letter-spacing: -0.03em; }
.brand-tag { font-size: 11.5px; color: var(--text-muted); font-weight: 500; letter-spacing: 0; }

.theme-toggle {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, color .18s ease, border-color .18s ease;
}
.theme-toggle:hover { transform: translateY(-1px); color: var(--primary); border-color: var(--border-strong); }

/* ---------- Container / Hero ---------- */
.container { max-width: 1120px; margin: 0 auto; padding: 28px 24px 48px; }

.hero { text-align: center; max-width: 720px; margin: 26px auto 40px; }
.hero-badge {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--primary-600);
  background: var(--primary-soft);
  border: 1px solid color-mix(in srgb, var(--primary) 22%, transparent);
  padding: 6px 13px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: 0;
}
.hero h1 {
  font-size: clamp(28px, 4.6vw, 46px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin: 0 0 14px;
}
.grad {
  background: linear-gradient(100deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  color: var(--text-soft);
  font-size: clamp(15px, 2vw, 17px);
  margin: 0 auto;
  max-width: 600px;
}

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
  align-items: start;
}
@media (max-width: 880px) { .layout { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.form-card { padding: 6px 26px 26px; }

/* ---------- Field groups ---------- */
.field-group { padding: 22px 0; border-bottom: 1px solid var(--border); }
.field-group:last-of-type { border-bottom: none; padding-bottom: 8px; }
.group-head { display: flex; align-items: center; gap: 13px; margin-bottom: 18px; }
.group-icon {
  width: 40px; height: 40px;
  flex: 0 0 auto;
  display: grid; place-items: center;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 11px;
}
.group-icon .icon { width: 21px; height: 21px; }
.group-head h2 { font-size: 16px; font-weight: 700; margin: 0; letter-spacing: -0.02em; }
.group-sub { font-size: 12.5px; color: var(--text-muted); margin: 1px 0 0; }

.row { display: flex; gap: 14px; }
.row .field { flex: 1; min-width: 0; }
@media (max-width: 440px) { .row { flex-direction: column; } }

.field { display: flex; flex-direction: column; gap: 7px; }
.field > span { font-size: 12.5px; font-weight: 600; color: var(--text-soft); }

input, select {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  font-weight: 500;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
  -webkit-appearance: none;
  appearance: none;
}
input::placeholder { color: var(--text-muted); font-weight: 400; }
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238a90a1' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 13px center;
  padding-right: 40px;
  cursor: pointer;
}
input:hover, select:hover { border-color: var(--border-strong); }
input:focus, select:focus {
  outline: none;
  background: var(--surface);
  border-color: var(--primary);
  box-shadow: 0 0 0 3.5px var(--ring);
}

/* Segment (mode) */
.seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 16px;
}
.seg-btn {
  border: none;
  background: transparent;
  color: var(--text-soft);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 12px;
  border-radius: 9px;
  cursor: pointer;
  transition: color .15s ease, background .15s ease, box-shadow .15s ease;
}
.seg-btn.active { background: var(--surface); color: var(--primary); box-shadow: var(--shadow-sm); }

/* Route row */
.route-row { display: flex; gap: 10px; align-items: flex-end; }
.route-row .field { flex: 1; min-width: 0; }
.swap-btn {
  flex: 0 0 auto;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--primary);
  cursor: pointer;
  transition: transform .35s cubic-bezier(.4,0,.2,1), background .15s ease, border-color .15s ease;
}
.swap-btn:hover { background: var(--primary-soft); border-color: color-mix(in srgb, var(--primary) 30%, transparent); transform: rotate(180deg); }
.swap-btn .icon { width: 18px; height: 18px; }
@media (max-width: 440px) {
  .route-row { flex-direction: column; align-items: stretch; }
  .swap-btn { align-self: center; transform: rotate(90deg); }
  .swap-btn:hover { transform: rotate(270deg); }
}

.hint { font-size: 12.5px; color: var(--text-muted); margin: 10px 0 0; line-height: 1.5; }
.hint em { color: var(--text-soft); font-style: normal; }
.link-btn {
  border: none; background: none; padding: 0;
  color: var(--primary); font: inherit; font-size: 12.5px;
  font-weight: 700; cursor: pointer; text-decoration: underline; text-underline-offset: 2px;
}

/* Checkbox */
.check { display: flex; align-items: center; gap: 11px; margin-top: 16px; cursor: pointer; }
.check input { position: absolute; opacity: 0; width: 0; height: 0; }
.check-box {
  width: 20px; height: 20px; flex: 0 0 auto;
  border: 1.8px solid var(--border-strong);
  border-radius: 6px;
  background: var(--surface-2);
  transition: all .15s ease;
  position: relative;
}
.check input:checked + .check-box {
  background: var(--primary); border-color: var(--primary);
}
.check input:checked + .check-box::after {
  content: ""; position: absolute;
  left: 6px; top: 2.5px; width: 5px; height: 10px;
  border: solid #fff; border-width: 0 2.2px 2.2px 0;
  transform: rotate(45deg);
}
.check input:focus-visible + .check-box { box-shadow: 0 0 0 3.5px var(--ring); }
.check-label { font-size: 13.5px; color: var(--text-soft); font-weight: 500; }
.check-label em { color: var(--text-muted); font-style: normal; font-size: 12.5px; }

/* Fuel tabs */
.fuel-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 18px; }
@media (max-width: 500px) { .fuel-tabs { grid-template-columns: repeat(2, 1fr); } }
.fuel-tab {
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-soft);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  padding: 11px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .15s ease;
}
.fuel-tab:hover { border-color: var(--border-strong); color: var(--text); }
.fuel-tab.active {
  background: var(--primary-soft);
  border-color: color-mix(in srgb, var(--primary) 35%, transparent);
  color: var(--primary-600);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--primary) 22%, transparent);
}

/* Stepper */
.stepper { display: inline-flex; align-items: center; gap: 8px; }
.stepper input { text-align: center; width: 84px; font-weight: 700; font-variant-numeric: tabular-nums; }
.step-btn {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 22px; font-weight: 500; line-height: 1;
  cursor: pointer;
  transition: all .15s ease;
}
.step-btn:hover { background: var(--primary-soft); color: var(--primary); border-color: color-mix(in srgb, var(--primary) 30%, transparent); }

/* Actions */
.form-actions { display: flex; gap: 12px; margin-top: 26px; }
.btn-primary {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border: none;
  background: linear-gradient(145deg, var(--primary), var(--primary-700));
  color: #fff;
  font-family: inherit;
  font-size: 15.5px; font-weight: 700;
  padding: 15px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: 0 10px 22px -10px color-mix(in srgb, var(--primary) 75%, transparent), inset 0 1px 0 rgba(255,255,255,.18);
  transition: transform .12s ease, box-shadow .2s ease, filter .2s ease;
}
.btn-primary .icon { width: 18px; height: 18px; transition: transform .2s ease; }
.btn-primary:hover { transform: translateY(-1px); filter: brightness(1.04); }
.btn-primary:hover .icon { transform: translateX(3px); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-soft);
  font-family: inherit;
  font-size: 14.5px; font-weight: 600;
  padding: 15px 22px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .15s ease;
}
.btn-ghost:hover { background: var(--surface-3); color: var(--text); }

/* ---------- Sonuç ---------- */
.result-wrap { position: sticky; top: 22px; display: flex; flex-direction: column; gap: 12px; }
@media (max-width: 880px) { .result-wrap { position: static; } }
.result-card { padding: 26px; overflow: hidden; }

.result-empty { text-align: center; padding: 48px 16px; }
.empty-icon {
  width: 60px; height: 60px;
  display: inline-grid; place-items: center;
  color: var(--text-muted);
  background: var(--surface-3);
  border-radius: 16px;
  margin-bottom: 18px;
}
.empty-icon .icon { width: 28px; height: 28px; stroke-width: 1.7; }
.empty-title { font-size: 16px; font-weight: 700; margin: 0 0 4px; }
.empty-desc { font-size: 13.5px; color: var(--text-muted); margin: 0; }

.hidden { display: none !important; }

.result-content { animation: fade-up .35s cubic-bezier(.2,.7,.3,1); }
@keyframes fade-up { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.result-total {
  text-align: center;
  padding: 22px 18px;
  background:
    radial-gradient(120% 140% at 50% 0%, color-mix(in srgb, var(--primary) 12%, transparent), transparent 70%),
    var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}
.result-total-label { display: block; font-size: 12.5px; color: var(--text-soft); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.result-total-value {
  display: block;
  font-family: var(--mono);
  font-size: clamp(38px, 8vw, 50px);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text);
  margin: 6px 0 3px;
}
.result-total-sub { display: block; font-size: 13px; color: var(--primary-600); font-weight: 600; }

.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.rstat {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 13px 15px;
}
.rstat-label { display: block; font-size: 11.5px; color: var(--text-muted); margin-bottom: 4px; font-weight: 500; }
.rstat-value { display: block; font-family: var(--mono); font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }

.result-bar {
  display: flex; height: 10px;
  border-radius: 999px; overflow: hidden;
  background: var(--surface-3);
  margin-bottom: 11px;
}
.bar-seg { height: 100%; transition: width .6s cubic-bezier(.4,0,.2,1); }
.bar-fuel { background: var(--primary); }
.bar-toll { background: var(--accent); }
.result-legend { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--text-soft); margin-bottom: 18px; }
.result-legend b { color: var(--text); font-weight: 700; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 6px; vertical-align: middle; }
.dot-fuel { background: var(--primary); }
.dot-toll { background: var(--accent); }

.result-breakdown { border-top: 1px solid var(--border); padding-top: 8px; }
.bd-row {
  display: flex; justify-content: space-between; gap: 12px;
  font-size: 13.5px; padding: 9px 0;
  color: var(--text-soft);
  border-bottom: 1px solid var(--border);
}
.bd-row:last-child { border-bottom: none; }
.bd-row span:last-child { font-weight: 700; color: var(--text); font-family: var(--mono); font-size: 13.5px; }
.bd-highlight span:first-child { color: var(--text); font-weight: 700; }
.bd-highlight span:last-child { color: var(--success); }

.disclaimer { font-size: 12px; color: var(--text-muted); text-align: center; margin: 0; padding: 0 8px; line-height: 1.5; }

/* ---------- Reklam alanları ---------- */
.ad-slot {
  display: block;
  max-width: 1080px;
  margin: 0 auto 24px;
  padding: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  text-align: center;
  overflow: hidden;
}
.ad-slot .ad-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.ad-slot .adsbygoogle {
  display: block;
  min-height: 90px;
}
/* Reklam yüklenmediyse (yayıncı kimliği ayarlı değilse) boş kutuyu gizle */
.ad-slot .adsbygoogle:not([data-ad-status="filled"]):empty {
  min-height: 0;
}
.ad-slot:not(:has([data-ad-status="filled"])) {
  display: none;
}

/* ---------- Paylaşım butonları ---------- */
.result-share {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
@media (max-width: 360px) { .result-share { grid-template-columns: 1fr; } }
.share-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: inherit;
  font-size: 13.5px; font-weight: 700;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .12s ease, filter .2s ease, background .15s ease, color .15s ease;
}
.share-btn:hover { transform: translateY(-1px); }
.share-btn .icon { width: 18px; height: 18px; }
.share-wa { background: #25d366; color: #06371b; }
.share-wa .icon { fill: currentColor; stroke: none; }
.share-wa:hover { filter: brightness(1.05); }
.share-copy { background: var(--surface-2); color: var(--text); border-color: var(--border-strong); }
.share-copy:hover { background: var(--surface-3); }
.share-copy.copied { background: var(--success); color: #fff; border-color: transparent; }

/* ---------- İçerik & SSS ---------- */
.content, .faq {
  max-width: 820px;
  margin: 40px auto 0;
}
.content-title {
  font-size: clamp(21px, 3.4vw, 27px);
  font-weight: 800;
  letter-spacing: -0.03em;
  text-align: center;
  margin: 0 0 18px;
}
.content-lead {
  color: var(--text-soft);
  font-size: 15.5px;
  text-align: center;
  margin: 0 auto 28px;
  max-width: 680px;
}
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }
.step {
  display: flex; gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.step-num {
  flex: 0 0 auto;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  font-family: var(--mono); font-weight: 700; font-size: 14px;
  color: #fff;
  background: linear-gradient(145deg, var(--primary), var(--primary-700));
  border-radius: 9px;
}
.step h3 { font-size: 15px; font-weight: 700; margin: 3px 0 6px; letter-spacing: -0.02em; }
.step p { font-size: 13.5px; color: var(--text-soft); margin: 0; line-height: 1.55; }

.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px 18px;
  font-size: 14.5px; font-weight: 700;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color .15s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-chevron { width: 18px; height: 18px; color: var(--text-muted); transition: transform .25s ease; }
.faq-item[open] .faq-chevron { transform: rotate(180deg); }
.faq-body { padding: 0 18px 16px; }
.faq-body p { margin: 0; font-size: 13.5px; color: var(--text-soft); line-height: 1.6; }

/* ---------- Footer ---------- */
.footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px 34px;
  text-align: center;
  font-size: 12.5px; color: var(--text-muted);
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.footer span:first-child { font-weight: 700; color: var(--text-soft); }
.footer-sep { opacity: .5; }