:root {
  --ink: #071a2f;
  --text: #22334a;
  --muted: #56657a;
  --line: #e3e9f0;
  --bg: #f6f9fc;
  --blue: #1f5f99;
  --blue-2: #2f78b7;
  --brand: #2557a7;
  --green: #16823f;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--blue);
}

img {
  max-width: 100%;
  height: auto;
}

/* Üst bar */
.bh {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid #e4e2e0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
}

.bh-in {
  display: flex;
  align-items: center;
  gap: 28px;
  width: min(1180px, calc(100% - 32px));
  height: 64px;
  margin: 0 auto;
}

.bh-brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.bh-brand img {
  display: block;
  width: auto;
  height: 26px;
}

.bh-nav {
  display: flex;
  gap: 22px;
  margin: 0 auto;
}

.bh-nav a {
  color: #4b5563;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.bh-nav a:hover,
.bh-nav a.is-active {
  color: var(--brand);
}

.bh-cta {
  padding: 10px 18px;
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

/* Yazı */
.post-hero {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 10px;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 14px;
}

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

.crumbs a:hover {
  color: var(--blue);
}

.pill {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  background: #e8f1fa;
  color: var(--blue);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.post-hero h1 {
  margin: 14px 0 12px;
  color: var(--ink);
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.lead {
  margin: 0;
  color: #3c4c61;
  font-size: 19px;
  line-height: 1.6;
}

.meta {
  margin: 16px 0 24px;
  color: var(--muted);
  font-size: 14px;
}

.post-cover {
  display: block;
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(7, 26, 47, 0.16);
}

.post-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 56px;
  width: min(1180px, calc(100% - 32px));
  margin: 46px auto 0;
}

.post-body {
  max-width: 720px;
  font-size: 18px;
  line-height: 1.8;
}

.post-body h2 {
  margin: 48px 0 14px;
  color: var(--ink);
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.post-body h3 {
  margin: 30px 0 8px;
  color: var(--ink);
  font-size: 21px;
  line-height: 1.35;
}

.post-body p {
  margin: 0 0 18px;
}

.post-body ul,
.post-body ol {
  margin: 0 0 22px;
  padding-left: 24px;
}

.post-body li {
  margin-bottom: 8px;
}

.post-body li::marker {
  color: var(--blue-2);
}

.post-body strong {
  color: var(--ink);
}

.post-body blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--blue-2);
  border-radius: 0 12px 12px 0;
  background: var(--bg);
}

.table-wrap {
  overflow-x: auto;
  margin: 8px 0 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15.5px;
  line-height: 1.5;
}

.post-body th,
.post-body td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.post-body th {
  background: var(--bg);
  color: var(--ink);
  font-weight: 700;
}

.post-body tr:last-child td {
  border-bottom: 0;
}

.post-body a {
  font-weight: 600;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* Yan panel */
.post-side {
  display: grid;
  align-content: start;
  gap: 18px;
  position: sticky;
  top: 90px;
  height: fit-content;
}

.toc,
.side-cta,
.side-a1 {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.toc strong {
  color: var(--ink);
}

.toc ol {
  margin: 12px 0 0;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.5;
}

.toc li {
  margin-bottom: 8px;
}

.toc a {
  color: #3c4c61;
  text-decoration: none;
}

.toc a:hover {
  color: var(--blue);
}

.side-cta {
  background: linear-gradient(160deg, #0f2f52, #1f5f99);
  color: #fff;
}

.side-cta strong {
  font-size: 17px;
  line-height: 1.35;
}

.side-cta p {
  margin: 8px 0 16px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  line-height: 1.55;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  margin-top: 10px;
  border-radius: 12px;
  background: #fff;
  color: var(--blue);
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
}

.btn-wa {
  background: #16823f;
  color: #fff;
}

.side-a1 {
  display: grid;
  gap: 6px;
  background: #fff8e1;
  border-color: #ffe08a;
  text-decoration: none;
}

.side-a1 strong {
  color: #5c4a1a;
}

.side-a1 span {
  color: #5c4a1a;
  font-size: 14px;
  line-height: 1.5;
}

/* Kartlar */
.related {
  width: min(1180px, calc(100% - 32px));
  margin: 70px auto 0;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.related h2 {
  margin: 0 0 22px;
  color: var(--ink);
  font-size: 28px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  color: inherit;
  text-decoration: none;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 50px rgba(7, 26, 47, 0.12);
}

.card[hidden] {
  display: none;
}

.card img {
  display: block;
  aspect-ratio: 1200 / 630;
  object-fit: cover;
}

.card-body {
  display: grid;
  gap: 10px;
  padding: 18px 20px 22px;
}

.card-body .pill {
  justify-self: start;
}

.card strong {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.35;
}

.card-ex {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.55;
}

.card-meta {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

/* Blog listesi */
.blog-index {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.bi-hero {
  max-width: 780px;
  padding: 50px 0 30px;
}

.bi-hero h1 {
  margin: 14px 0 12px;
  color: var(--ink);
  font-size: clamp(32px, 4.6vw, 52px);
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.bi-hero p {
  margin: 0;
  color: #3c4c61;
  font-size: 18px;
  line-height: 1.65;
}

.pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.card-big strong {
  font-size: 22px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 40px 0 22px;
}

.filters button {
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #3c4c61;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.filters button.is-on {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}

/* Alt bilgi */
.bf {
  margin-top: 90px;
  padding: 44px 0 30px;
  background: #071a2f;
  color: rgba(255, 255, 255, 0.82);
}

.bf-in {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 28px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.bf-in strong {
  color: #fff;
  font-size: 18px;
}

.bf-logo {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  background: #fff;
}

.bf-logo img {
  display: block;
  width: auto;
  height: 22px;
}

.bf-in p {
  max-width: 460px;
  line-height: 1.6;
}

.bf-links {
  display: grid;
  gap: 10px;
}

.bf-links a {
  color: #fff;
  text-decoration: none;
}

.bf-note {
  width: min(1180px, calc(100% - 32px));
  margin: 26px auto 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
}

/* Hızlı iletişim */
.fab-wrap {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 30;
  display: grid;
  gap: 12px;
}

.fab {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  color: #fff;
  box-shadow: 0 14px 30px rgba(7, 26, 47, 0.25);
  transition: transform 260ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.fab:hover {
  transform: translateY(-4px) scale(1.05);
}

.fab-wa {
  background: linear-gradient(135deg, #16823f, #0b6e4f);
}

.fab-call {
  background: linear-gradient(135deg, #2f78b7, #143f6b);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid #8cc4f5;
  outline-offset: 3px;
}

@media (max-width: 1000px) {
  .bh-nav {
    display: none;
  }

  .bh-cta {
    margin-left: auto;
  }

  .post-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .post-side {
    position: static;
  }

  .toc {
    display: none;
  }

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

@media (max-width: 640px) {
  .post-body {
    font-size: 17px;
  }

  .post-body h2 {
    font-size: 24px;
  }

  .cards,
  .pillars {
    grid-template-columns: 1fr;
  }

  .fab {
    width: 52px;
    height: 52px;
  }
}