/* =============================================================================
   Samsun SMMM — stil sayfasi
   -----------------------------------------------------------------------------
   Duzen:  1. Tokenlar
           2. Reset / temel
           3. Tipografi
           4. Yerlesim yardimcilari
           5. Bilesenler
           6. Bolum bazli
           7. Yardimci siniflar
           8. Hareket / erisilebilirlik / baski
   Not:    Site bilincli olarak tek temali (acik). `color-scheme: light`
           sabitlenmistir; koyu tema varyanti yoktur.
============================================================================= */

/* -- 1. Tokenlar ---------------------------------------------------------- */

:root {
  /* Yuzeyler — kagit tonunda kirik beyaz, saf beyaz sadece yukseltilmis
     yuzeylerde kullanilir ki kartlar zeminden ayrissin. */
  --paper: #fcfcfa;
  --surface: #ffffff;
  --sunken: #f5f4ef;
  --navy-wash: #eef2f6;

  /* Metin — notrlar hafif sicak, saf gri degil. */
  --ink: #111a22;
  --ink-2: #3f4c58;
  --ink-3: #6d7a86;
  --ink-4: #929da7;

  /* Cizgiler */
  --line: #e4e2db;
  --line-2: #d3d0c6;
  --line-navy: #c9d6e2;

  /* Vurgu */
  --navy: #16334f;
  --navy-hover: #0f2439;
  --navy-soft: #dfe8f0;
  --gold: #9a7b34; /* ikincil vurgu — cok az yerde */

  /* Durum */
  --ok: #1f6b46;
  --warn: #8a5a12;

  /* Tipografi */
  --font-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Source Serif 4", ui-serif, Georgia, "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas,
    monospace;

  /* Tip olcegi — 1.25 orani, uc noktalarda clamp'li */
  --t-xs: 0.75rem;
  --t-sm: 0.8125rem;
  --t-base: 1rem;
  --t-md: 1.0625rem;
  --t-lg: clamp(1.125rem, 0.35vw + 1.05rem, 1.25rem);
  --t-xl: clamp(1.35rem, 0.7vw + 1.2rem, 1.6rem);
  --t-2xl: clamp(1.6rem, 1.2vw + 1.35rem, 2.1rem);
  --t-3xl: clamp(2rem, 2vw + 1.5rem, 2.9rem);
  --t-4xl: clamp(2.4rem, 3.4vw + 1.5rem, 4rem);

  /* Bosluk olcegi — 4px tabanli */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 2.5rem;
  --s-8: 3rem;
  --s-9: 4rem;
  --s-10: 5.5rem;
  --s-11: 7rem;

  /* Yerlesim */
  --container: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --measure: 68ch;
  --radius: 3px;
  --radius-lg: 5px;
  --header-h: 68px;

  /* Golgeler — cok kisitli. Yuzey ayrimi once cizgi ile yapilir. */
  --shadow-sm: 0 1px 2px rgba(17, 26, 34, 0.05);
  --shadow-pop: 0 12px 32px -12px rgba(17, 26, 34, 0.22),
    0 2px 6px rgba(17, 26, 34, 0.06);

  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  color-scheme: light;
}

/* -- 2. Reset / temel ----------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--s-5));
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--t-md);
  line-height: 1.62;
  font-feature-settings: "kern", "liga", "calt";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-wrap: break-word;
}

img,
svg,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

a {
  color: var(--navy);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--navy-hover);
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: var(--s-7) 0;
}

::selection {
  background: var(--navy);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 3px;
  border-radius: 2px;
}

/* -- 3. Tipografi --------------------------------------------------------- */

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.014em;
  color: var(--ink);
  margin: 0 0 var(--s-4);
  text-wrap: balance;
}

h1 {
  font-size: var(--t-4xl);
  line-height: 1.06;
  letter-spacing: -0.024em;
}

h2 {
  font-size: var(--t-3xl);
  letter-spacing: -0.02em;
}

h3 {
  font-size: var(--t-xl);
}

h4 {
  font-size: var(--t-lg);
  line-height: 1.3;
}

p {
  margin: 0 0 var(--s-4);
}

p:last-child {
  margin-bottom: 0;
}

strong {
  font-weight: 600;
  color: var(--ink);
}

small {
  font-size: var(--t-sm);
}

/* Bolum ust etiketi — mono, seyreltilmis, onunde kisa cizgi */
.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 var(--s-4);
}

.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: var(--line-2);
  flex: none;
}

.eyebrow--plain::before {
  display: none;
}

/* Giris paragrafi */
.lead {
  font-size: var(--t-lg);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 58ch;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: -0.01em;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* Uzun metin blogu */
.prose {
  max-width: var(--measure);
}

.prose > * + * {
  margin-top: var(--s-4);
}

.prose h2 {
  font-size: var(--t-2xl);
  margin-top: var(--s-8);
}

.prose h3 {
  font-size: var(--t-lg);
  margin-top: var(--s-6);
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.005em;
}

.prose ul,
.prose ol {
  padding-left: 1.15rem;
  margin: 0;
}

.prose li + li {
  margin-top: var(--s-2);
}

.prose li::marker {
  color: var(--ink-4);
}

.prose figure {
  margin: var(--s-6) 0;
}

.prose blockquote {
  margin: var(--s-6) 0;
  padding-left: var(--s-5);
  border-left: 2px solid var(--navy);
  font-family: var(--font-serif);
  font-size: var(--t-lg);
  line-height: 1.5;
  color: var(--ink-2);
}

/* -- 4. Yerlesim yardimcilari --------------------------------------------- */

.container {
  width: min(100% - (var(--gutter) * 2), var(--container));
  margin-inline: auto;
}

.container--narrow {
  --container: 860px;
}

.section {
  padding-block: clamp(3.5rem, 7vw, var(--s-11));
}

.section--tight {
  padding-block: clamp(2.5rem, 5vw, var(--s-9));
}

.section--sunken {
  background: var(--sunken);
}

.section--ruled {
  border-top: 1px solid var(--line);
}

.section__head {
  max-width: 62ch;
  margin-bottom: var(--s-8);
}

.section__head p {
  color: var(--ink-2);
  max-width: 56ch;
}

/* Basligin sagina hizalanan yan link */
.section__head--split {
  max-width: none;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s-5);
}

.section__head--split > div {
  max-width: 58ch;
}

.section__head--split h2 {
  margin-bottom: 0;
}

/* Cizgi izgarasi: hucreler arasi 1px, golgesiz kart dizilimi */
.rule-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.rule-grid > * {
  background: var(--paper);
}

.section--sunken .rule-grid > * {
  background: var(--sunken);
}

.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.stack {
  display: grid;
  gap: var(--s-4);
}

.stack--lg {
  gap: var(--s-6);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  align-items: center;
}

/* -- 5. Bilesenler -------------------------------------------------------- */

/* 5.1 Butonlar */

.btn {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: var(--line-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 0.72em 1.35em;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  font-size: var(--t-base);
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease),
    color 0.18s var(--ease), transform 0.18s var(--ease);
}

.btn:active {
  transform: translateY(1px);
}

.btn svg {
  flex: none;
  width: 1.05em;
  height: 1.05em;
}

.btn--primary {
  --btn-bg: var(--navy);
  --btn-fg: #fff;
  --btn-bd: var(--navy);
}

.btn--primary:hover {
  --btn-bg: var(--navy-hover);
  --btn-bd: var(--navy-hover);
  color: #fff;
}

.btn--ghost:hover {
  --btn-bd: var(--ink-3);
  --btn-bg: var(--surface);
}

.btn--sm {
  padding: 0.5em 0.9em;
  font-size: var(--t-sm);
}

.btn--full {
  width: 100%;
}

/* Ok'u kayan metin bagi */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font-weight: 500;
  font-size: var(--t-base);
  text-decoration: none;
  color: var(--navy);
}

.arrow-link svg {
  width: 1em;
  height: 1em;
  transition: transform 0.22s var(--ease);
}

.arrow-link:hover svg {
  transform: translateX(3px);
}

.arrow-link:hover {
  text-decoration: underline;
}

/* 5.2 Ust bar + baslik */

.skip-link {
  position: absolute;
  left: var(--s-4);
  top: var(--s-4);
  z-index: 200;
  padding: 0.6em 1em;
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius);
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  color: #fff;
}

.topbar {
  background: var(--navy);
  color: #c8d6e2;
  font-size: var(--t-sm);
  border-bottom: 1px solid var(--navy);
}

.topbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-2) var(--s-5);
  min-height: 38px;
  padding-block: 0.35rem;
}

.topbar a {
  color: #e6eef5;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
}

.topbar a:hover {
  color: #fff;
  text-decoration: underline;
}

.topbar svg {
  width: 0.95em;
  height: 0.95em;
  opacity: 0.7;
  flex: none;
}

.topbar__note {
  color: #9fb4c6;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.site-header[data-stuck="true"] {
  border-bottom-color: var(--line);
  background: color-mix(in srgb, var(--paper) 96%, transparent);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: var(--s-5);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
  flex: none;
  margin-right: auto;
}

.brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
  color: var(--navy);
}

.brand__text {
  display: grid;
  line-height: 1.1;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand__meta {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* 5.3 Gezinme */

.nav {
  display: flex;
  align-items: center;
  gap: var(--s-1);
}

.nav__link,
.nav__trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.5rem 0.7rem;
  border: 0;
  background: none;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s var(--ease), background-color 0.15s var(--ease);
}

.nav__link:hover,
.nav__trigger:hover,
.nav__item:focus-within .nav__trigger {
  color: var(--ink);
  background: var(--sunken);
}

.nav__link[aria-current="page"] {
  color: var(--navy);
}

.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  inset: auto 0.7rem -1px 0.7rem;
  height: 2px;
  background: var(--navy);
}

.nav__item {
  position: relative;
}

.nav__trigger svg {
  width: 0.7em;
  height: 0.7em;
  opacity: 0.6;
  transition: transform 0.18s var(--ease);
}

.nav__item[data-open="true"] .nav__trigger svg {
  transform: rotate(180deg);
}

.nav__panel {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: -0.4rem;
  min-width: 300px;
  padding: var(--s-2);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  display: grid;
  gap: 1px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.16s var(--ease), transform 0.16s var(--ease),
    visibility 0.16s;
}

.nav__item[data-open="true"] .nav__panel,
.nav__item:hover .nav__panel,
.nav__item:focus-within .nav__panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__panel a {
  display: block;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  color: var(--ink-2);
  text-decoration: none;
}

.nav__panel a:hover {
  background: var(--navy-wash);
  color: var(--navy);
}

.nav__panel a span {
  display: block;
  font-size: var(--t-xs);
  color: var(--ink-4);
  margin-top: 1px;
}

.nav__panel a:hover span {
  color: var(--ink-3);
}

.header__cta {
  flex: none;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  background: none;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  cursor: pointer;
  flex: none;
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

.nav-toggle .icon-close {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

.nav-toggle[aria-expanded="true"] .icon-menu {
  display: none;
}

/* Mobil panel */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: grid;
  grid-template-columns: 1fr min(88%, 380px);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav__scrim {
  background: rgba(17, 26, 34, 0.4);
  border: 0;
  padding: 0;
  cursor: pointer;
  animation: fade-in 0.2s var(--ease);
}

.mobile-nav__panel {
  background: var(--paper);
  border-left: 1px solid var(--line);
  overflow-y: auto;
  padding: var(--s-5) var(--s-5) var(--s-8);
  animation: slide-in 0.26s var(--ease);
}

.mobile-nav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--s-5);
}

.mobile-nav a {
  display: block;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
}

.mobile-nav a:hover {
  color: var(--navy);
}

.mobile-nav__group {
  padding-block: var(--s-3);
  border-bottom: 1px solid var(--line);
}

.mobile-nav__group > p {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 var(--s-1);
}

.mobile-nav__group a {
  border-bottom: 0;
  padding: 0.42rem 0;
  font-weight: 400;
  color: var(--ink-2);
  font-size: var(--t-base);
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
}

@keyframes slide-in {
  from {
    transform: translateX(100%);
  }
}

/* 5.4 Kartlar */

.card {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding: var(--s-6);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.2s var(--ease);
}

a.card:hover {
  background: var(--surface);
}

.section--sunken a.card:hover {
  background: var(--surface);
}

.card__icon {
  width: 26px;
  height: 26px;
  color: var(--navy);
  margin-bottom: var(--s-1);
}

.card h3 {
  font-family: var(--font-sans);
  font-size: var(--t-md);
  font-weight: 600;
  letter-spacing: -0.005em;
  line-height: 1.35;
  margin: 0;
}

.card p {
  font-size: var(--t-base);
  color: var(--ink-2);
  margin: 0;
}

.card__foot {
  margin-top: auto;
  padding-top: var(--s-3);
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--navy);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}

.card__foot svg {
  width: 0.9em;
  height: 0.9em;
  transition: transform 0.22s var(--ease);
}

a.card:hover .card__foot svg {
  transform: translateX(3px);
}

/* Numarali kart (surec adimlari) */
.step {
  padding: var(--s-6);
  display: grid;
  gap: var(--s-3);
  align-content: start;
}

.step__no {
  font-family: var(--font-mono);
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.06em;
}

.step h3 {
  font-family: var(--font-sans);
  font-size: var(--t-md);
  font-weight: 600;
  margin: 0;
}

.step p {
  font-size: var(--t-base);
  color: var(--ink-2);
  margin: 0;
}

/* 5.5 Istatistik seridi */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stat {
  padding: var(--s-6) var(--s-5);
  border-left: 1px solid var(--line);
}

.stat:first-child {
  border-left: 0;
  padding-left: 0;
}

.stat__val {
  font-family: var(--font-serif);
  font-size: var(--t-2xl);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.stat__lbl {
  margin-top: var(--s-2);
  font-size: var(--t-sm);
  color: var(--ink-3);
  line-height: 1.4;
}

/* 5.6 Kunye / veri listesi */

.spec {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
}

.spec__head {
  padding: var(--s-4) var(--s-5);
  border-bottom: 1px solid var(--line);
  background: var(--sunken);
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.spec__list {
  margin: 0;
  display: grid;
}

.spec__list > div {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: var(--s-4);
  padding: 0.7rem var(--s-5);
  border-top: 1px solid var(--line);
  font-size: var(--t-base);
}

.spec__list > div:first-child {
  border-top: 0;
}

.spec__list dt {
  color: var(--ink-3);
  font-size: var(--t-sm);
  padding-top: 0.15em;
}

.spec__list dd {
  margin: 0;
  color: var(--ink);
}

.spec__foot {
  padding: var(--s-4) var(--s-5);
  border-top: 1px solid var(--line);
  background: var(--sunken);
  font-size: var(--t-sm);
  color: var(--ink-3);
}

/* 5.7 Isaretli liste */

.ticks {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--s-3);
}

.ticks li {
  display: grid;
  grid-template-columns: 1.1rem 1fr;
  gap: var(--s-3);
  align-items: start;
  font-size: var(--t-base);
  color: var(--ink-2);
}

.ticks li::before {
  content: "";
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.32em;
  background: var(--navy);
  opacity: 0.9;
  -webkit-mask: var(--tick-mask) center / contain no-repeat;
  mask: var(--tick-mask) center / contain no-repeat;
}

.ticks--2 {
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-3) var(--s-6);
}

/* Etiket dizisi */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  list-style: none;
  padding: 0;
  margin: 0;
}

.tags li,
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: var(--t-sm);
  color: var(--ink-2);
  background: var(--surface);
}

/* 5.8 Akordiyon (SSS) */

.faq {
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--s-5);
  padding: var(--s-5) 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-size: var(--t-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--ink);
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary:hover {
  color: var(--navy);
}

.faq summary::after {
  content: "";
  flex: none;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.25em;
  background: currentColor;
  -webkit-mask: var(--plus-mask) center / contain no-repeat;
  mask: var(--plus-mask) center / contain no-repeat;
  transition: transform 0.2s var(--ease);
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq__body {
  padding-bottom: var(--s-5);
  max-width: var(--measure);
  color: var(--ink-2);
}

/* 5.9 Form */

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-2);
}

.field label .req {
  color: var(--gold);
}

.field input,
.field select,
.field textarea {
  padding: 0.7rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  font-size: var(--t-base);
  transition: border-color 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  border-color: var(--ink-4);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 0;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px var(--navy-soft);
}

.field textarea {
  resize: vertical;
  min-height: 130px;
}

.field__hint {
  font-size: var(--t-sm);
  color: var(--ink-3);
}

.field[data-invalid="true"] input,
.field[data-invalid="true"] textarea,
.field[data-invalid="true"] select {
  border-color: #a8332b;
}

.field__error {
  font-size: var(--t-sm);
  color: #a8332b;
}

.field__error[hidden] {
  display: none;
}

.checkbox {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-3);
  align-items: start;
  font-size: var(--t-sm);
  color: var(--ink-2);
}

.checkbox input {
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.25em;
  accent-color: var(--navy);
}

.form-note {
  padding: var(--s-4);
  border: 1px solid var(--line);
  border-left: 2px solid var(--navy);
  border-radius: var(--radius);
  background: var(--navy-wash);
  font-size: var(--t-sm);
  color: var(--ink-2);
}

/* 5.10 Kunye kutulari / uyari */

.callout {
  padding: var(--s-5);
  border: 1px solid var(--line);
  border-left: 2px solid var(--gold);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: var(--t-base);
  color: var(--ink-2);
}

.callout strong {
  display: block;
  margin-bottom: var(--s-1);
  color: var(--ink);
}

/* 5.11 Tablo */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--t-base);
  background: var(--surface);
}

th,
td {
  text-align: left;
  padding: 0.72rem 1rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  font-size: var(--t-sm);
  font-weight: 600;
  color: var(--ink-3);
  background: var(--sunken);
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: 0;
}

/* 5.12 Kirinti yolu */

.crumbs {
  padding-block: var(--s-4);
  font-size: var(--t-sm);
  color: var(--ink-3);
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.crumbs li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--ink-4);
}

.crumbs a {
  color: var(--ink-3);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--navy);
  text-decoration: underline;
}

/* 5.13 Alt bilgi */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--sunken);
  padding-block: var(--s-9) var(--s-6);
  font-size: var(--t-base);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--s-8) var(--s-6);
}

.footer__grid h4 {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: var(--s-4);
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.55rem;
}

.footer__links a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.9375rem;
}

.footer__links a:hover {
  color: var(--navy);
  text-decoration: underline;
}

.footer__about p {
  color: var(--ink-2);
  font-size: 0.9375rem;
  max-width: 34ch;
}

.footer__contact {
  display: grid;
  gap: var(--s-3);
  font-size: 0.9375rem;
  color: var(--ink-2);
}

.footer__contact a {
  color: var(--ink-2);
  text-decoration: none;
}

.footer__contact a:hover {
  color: var(--navy);
  text-decoration: underline;
}

.footer__contact div {
  display: grid;
  grid-template-columns: 1.05rem 1fr;
  gap: var(--s-3);
  align-items: start;
}

.footer__contact svg {
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.22em;
  color: var(--ink-4);
}

.footer__bottom {
  margin-top: var(--s-8);
  padding-top: var(--s-5);
  border-top: 1px solid var(--line-2);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-5);
  align-items: center;
  justify-content: space-between;
  font-size: var(--t-sm);
  color: var(--ink-3);
}

.footer__bottom nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
}

.footer__bottom a {
  color: var(--ink-3);
  text-decoration: none;
}

.footer__bottom a:hover {
  color: var(--navy);
  text-decoration: underline;
}

/* -- 6. Bolum bazli ------------------------------------------------------- */

/* 6.1 Ana sayfa hero — 7/5 asimetrik */

.hero {
  padding-block: clamp(3rem, 6vw, var(--s-10)) clamp(3rem, 6vw, var(--s-9));
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 5vw, var(--s-9));
  align-items: center;
}

.hero h1 {
  max-width: 15ch;
}

.hero .lead {
  margin-top: var(--s-5);
  max-width: 50ch;
}

.hero__actions {
  margin-top: var(--s-7);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
}

.hero__meta {
  margin-top: var(--s-7);
  padding-top: var(--s-5);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-6);
  font-size: var(--t-sm);
  color: var(--ink-3);
}

.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
}

.hero__meta svg {
  width: 0.95em;
  height: 0.95em;
  color: var(--navy);
  opacity: 0.75;
}

/* Sayfa basligi (ic sayfalar) */
.page-head {
  padding-block: var(--s-7) var(--s-8);
  border-bottom: 1px solid var(--line);
}

.page-head__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: var(--s-6) var(--s-8);
  align-items: end;
}

.page-head h1 {
  font-size: var(--t-3xl);
  max-width: 18ch;
}

.page-head .lead {
  margin: 0;
}

/* 6.2 Ayrilmis iki sutun (hakkimizda, hizmet detay) */

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, var(--s-9));
  align-items: start;
}

.split--wide-left {
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
}

.split--wide-right {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
}

.sticky-aside {
  position: sticky;
  top: calc(var(--header-h) + var(--s-5));
}

/* 6.3 Cagri seridi */

.cta-band {
  background: var(--navy);
  color: #dce6ef;
}

.cta-band .container {
  padding-block: clamp(3rem, 6vw, var(--s-9));
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: var(--s-6) var(--s-8);
  align-items: center;
}

.cta-band h2 {
  color: #fff;
  max-width: 20ch;
  margin-bottom: var(--s-3);
}

.cta-band p {
  color: #b8cadb;
  max-width: 48ch;
  margin: 0;
}

.cta-band .eyebrow {
  color: #93aec6;
}

.cta-band .eyebrow::before {
  background: #3b5d7d;
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  justify-content: flex-end;
}

.cta-band .btn--primary {
  --btn-bg: #fff;
  --btn-fg: var(--navy);
  --btn-bd: #fff;
}

.cta-band .btn--primary:hover {
  --btn-bg: #e6eef5;
  --btn-bd: #e6eef5;
  color: var(--navy);
}

.cta-band .btn--ghost {
  --btn-fg: #dce6ef;
  --btn-bd: #3b5d7d;
}

.cta-band .btn--ghost:hover {
  --btn-bd: #6f90ac;
  --btn-bg: rgba(255, 255, 255, 0.06);
  color: #fff;
}

/* 6.4 Vergi takvimi kutusu */

.deadlines {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
}

.deadlines li {
  display: grid;
  grid-template-columns: 3.4rem 1fr;
  gap: var(--s-4);
  padding: 0.7rem var(--s-5);
  border-top: 1px solid var(--line);
  font-size: var(--t-base);
}

.deadlines li:first-child {
  border-top: 0;
}

.deadlines b {
  font-family: var(--font-mono);
  font-size: var(--t-md);
  font-weight: 500;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
}

.deadlines span {
  color: var(--ink-2);
  font-size: var(--t-base);
  line-height: 1.45;
}

.deadlines small {
  display: block;
  color: var(--ink-4);
  font-size: var(--t-xs);
}

/* 6.5 Blog */

.post-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.post-item {
  display: grid;
  grid-template-columns: 9rem 1fr auto;
  gap: var(--s-5);
  align-items: baseline;
  padding: var(--s-6) 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.18s var(--ease);
}

.post-item:hover {
  background: var(--surface);
}

.post-item time {
  font-family: var(--font-mono);
  font-size: var(--t-sm);
  color: var(--ink-3);
  white-space: nowrap;
}

.post-item h3 {
  font-size: var(--t-xl);
  margin: 0 0 var(--s-2);
}

.post-item p {
  font-size: var(--t-base);
  color: var(--ink-2);
  margin: 0;
  max-width: 62ch;
}

.post-item .arrow-link svg {
  width: 1.1em;
  height: 1.1em;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  font-size: var(--t-sm);
  color: var(--ink-3);
  font-family: var(--font-mono);
}

/* 6.6 Iletisim */

.map-frame {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--sunken);
  aspect-ratio: 16 / 10;
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--s-6);
}

.map-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.map-frame__hint {
  max-width: 34ch;
  color: var(--ink-3);
  font-size: var(--t-sm);
}

/* -- 7. Yardimci siniflar ------------------------------------------------- */

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.text-muted {
  color: var(--ink-3);
}

.mt-0 {
  margin-top: 0;
}

.mt-4 {
  margin-top: var(--s-4);
}

.mt-5 {
  margin-top: var(--s-5);
}

.mt-6 {
  margin-top: var(--s-6);
}

.mt-7 {
  margin-top: var(--s-7);
}

.mb-0 {
  margin-bottom: 0;
}

.no-scroll {
  overflow: hidden;
}

/* Maskeler — ikonu CSS'ten cizmek yerine tek yerde tanimla */
:root {
  --tick-mask: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 10.5 8 14.5 16 5.5'/%3E%3C/svg%3E");
  --plus-mask: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%23000' stroke-width='1.6' stroke-linecap='round'%3E%3Cpath d='M10 4v12M4 10h12'/%3E%3C/svg%3E");
}

/* -- 8. Hareket / erisilebilirlik / baski --------------------------------- */

/* Gorunume girince tek seferlik, cok kisitli acilma */
[data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* JS yoksa icerik yine de gorunsun */
.no-js [data-reveal] {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* -- Duyarli kirilmalar --------------------------------------------------- */

@media (max-width: 1080px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav__link,
  .nav__trigger {
    padding-inline: 0.5rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 940px) {
  .nav,
  .header__cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero__grid,
  .split,
  .split--wide-left,
  .split--wide-right,
  .page-head__grid,
  .cta-band .container {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: 18ch;
  }

  .cta-band__actions {
    justify-content: flex-start;
  }

  .cols-3,
  .cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat {
    padding-inline: var(--s-4);
  }

  .stat:nth-child(odd) {
    border-left: 0;
    padding-left: 0;
  }

  .stat:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .sticky-aside {
    position: static;
  }

  .post-item {
    grid-template-columns: 1fr;
    gap: var(--s-2);
  }

  .post-item .arrow-link {
    margin-top: var(--s-2);
  }
}

@media (max-width: 640px) {
  :root {
    --t-md: 1rem;
  }

  .cols-2,
  .cols-3,
  .cols-4 {
    grid-template-columns: 1fr;
  }

  .ticks--2 {
    grid-template-columns: 1fr;
  }

  .topbar__note {
    display: none;
  }

  .spec__list > div {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .card,
  .step {
    padding: var(--s-5);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--s-6);
  }
}

@media print {
  .topbar,
  .site-header,
  .mobile-nav,
  .cta-band,
  .site-footer,
  .skip-link {
    display: none !important;
  }

  body {
    background: #fff;
    font-size: 11pt;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 9pt;
    color: #555;
  }

  .section {
    padding-block: 1rem;
    break-inside: avoid;
  }
}