:root {
  --bg: #eef3f8;
  --surface: #ffffff;
  --text: #152238;
  --muted: #5a677a;
  --primary: #0f5ec7;
  --accent: #ef5a21;
  --dark: #0d1e38;
  --card: #ffffff;
  --ring: rgba(15, 94, 199, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -5%, #dce8f8 0 22%, transparent 46%),
    radial-gradient(circle at 90% 20%, #f8e8dd 0 18%, transparent 42%),
    var(--bg);
  line-height: 1.6;
}

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

.hero {
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.07), transparent 38%),
    linear-gradient(135deg, var(--dark), #173a71 58%, #1a4f96);
  color: #fff;
  padding-bottom: 3.8rem;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -8% -120px auto;
  width: 440px;
  height: 440px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2), transparent 60%);
  pointer-events: none;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  z-index: 2;
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand img {
  height: 66px;
  width: auto;
  display: block;
  filter: drop-shadow(0 8px 14px rgba(0, 0, 0, 0.15));
}

.nav ul {
  display: flex;
  list-style: none;
  gap: 1.3rem;
  margin: 0;
  padding: 0;
}

.nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible {
  opacity: 1;
}

.hero-content {
  padding: 4rem 0 1rem;
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.tag {
  opacity: 0.96;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #dbe9ff;
  margin: 0;
}

.hero-content h2 {
  margin: 0.65rem 0 0;
  max-width: 16ch;
  font-size: clamp(2rem, 4.8vw, 3.35rem);
  line-height: 1.15;
}

.hero-content p {
  margin: 1rem 0 0;
  color: #e6efff;
  max-width: 58ch;
}

.btn {
  display: inline-block;
  margin-top: 1.4rem;
  background: var(--primary);
  color: #fff;
  padding: 0.78rem 1.25rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: 0 10px 22px rgba(10, 36, 79, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  background: #0b53b0;
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(10, 36, 79, 0.38);
}

.secondary-btn {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  box-shadow: none;
}

.secondary-btn:hover,
.secondary-btn:focus-visible {
  background: rgba(15, 94, 199, 0.08);
  color: #0b53b0;
  box-shadow: none;
}

.section {
  padding: clamp(2.2rem, 6vw, 4rem) 0;
}

.section h3 {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
  color: #0f2547;
}

.section p {
  color: var(--muted);
}

#hakkimizda,
#iletisim {
  max-width: 900px;
}

#talimatlar {
  max-width: 900px;
}

.downloads {
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  border: 1px solid #d8e2f0;
  border-radius: 14px;
  background: var(--surface);
  box-shadow: 0 7px 18px rgba(9, 26, 49, 0.08);
}

.downloads h4 {
  margin: 0 0 0.6rem;
  color: #163865;
}

.downloads ul {
  margin: 0;
  padding-left: 1rem;
}

.downloads a {
  color: var(--primary);
  font-weight: 600;
}

.downloads a:hover,
.downloads a:focus-visible {
  color: #0b53b0;
}

.downloads .loading {
  color: var(--muted);
  font-style: italic;
  list-style: none;
}

#galeri p {
  margin: 0.65rem 0 1.2rem;
}

.slider {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  background: linear-gradient(180deg, #0f2546, #1b4a88);
  box-shadow: 0 16px 30px rgba(13, 30, 56, 0.2);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.slides {
  display: flex;
  transition: transform 0.45s ease;
  will-change: transform;
}

.slide {
  min-width: 100%;
  margin: 0;
  aspect-ratio: 16 / 9;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(12, 25, 49, 0.65);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.slider-btn:hover,
.slider-btn:focus-visible {
  background: rgba(12, 25, 49, 0.88);
  transform: translateY(-50%) scale(1.05);
}

.slider-btn.prev {
  left: 0.8rem;
}

.slider-btn.next {
  right: 0.8rem;
}

.slider-dots {
  position: absolute;
  left: 50%;
  bottom: 0.8rem;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: rgba(13, 30, 56, 0.55);
}

.slider-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 0;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  padding: 0;
}

.slider-dots button.is-active {
  background: var(--accent);
}

#faaliyetler {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.86));
  border-radius: 18px;
  margin-top: 1rem;
  margin-bottom: 1rem;
  padding-left: clamp(1rem, 3vw, 2rem);
  padding-right: clamp(1rem, 3vw, 2rem);
  box-shadow: 0 14px 28px rgba(13, 30, 56, 0.08);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.15rem;
  margin-top: 1rem;
}

.card {
  background: var(--card);
  padding: 1.1rem;
  border-radius: 14px;
  border: 1px solid #d8e2f0;
  box-shadow: 0 7px 18px rgba(9, 26, 49, 0.08);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.card h4 {
  margin: 0;
  color: #163865;
}

.card p {
  margin: 0.55rem 0 0;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--ring);
  box-shadow: 0 14px 24px rgba(9, 26, 49, 0.14);
}

.page-hero {
  padding-bottom: 2.4rem;
}

.page-hero-content {
  padding-top: 2.3rem;
}

.page-hero-content h1 {
  margin: 0.65rem 0 0;
  font-size: clamp(2rem, 4.8vw, 3.1rem);
  line-height: 1.15;
}

.about-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.about-card {
  background: var(--surface);
  border: 1px solid #d8e2f0;
  border-radius: 14px;
  padding: 1.1rem;
  box-shadow: 0 7px 18px rgba(9, 26, 49, 0.08);
}

.about-card h2,
.board-section h2 {
  margin: 0;
  color: #163865;
  font-size: clamp(1.25rem, 2.5vw, 1.6rem);
}

.about-card p {
  margin: 0.65rem 0 0;
}

.board-section p {
  margin: 0.65rem 0 1rem;
}

.table-wrap {
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid #d8e2f0;
  background: var(--surface);
  box-shadow: 0 7px 18px rgba(9, 26, 49, 0.08);
}

.board-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

.board-table th,
.board-table td {
  text-align: left;
  padding: 0.82rem 0.95rem;
  border-bottom: 1px solid #e5edf7;
}

.board-table thead th {
  background: #f2f6fd;
  color: #163865;
  font-weight: 700;
}

.board-table tbody tr:nth-child(even) {
  background: #fbfdff;
}

.board-table tbody tr:hover {
  background: #f5f9ff;
}

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

footer {
  background: #0c1525;
  color: #cfd8e6;
  text-align: center;
  padding: 1.15rem 0;
  margin-top: 1.25rem;
}

@media (max-width: 860px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.7rem;
  }

  .nav ul {
    width: 100%;
    flex-wrap: wrap;
    gap: 0.9rem 1.1rem;
  }

  .brand img {
    height: 58px;
  }

  .hero-content {
    padding-top: 2.8rem;
  }

  .hero-content h2 {
    max-width: 100%;
  }
}

@media (min-width: 861px) {
  .slider {
    max-width: 560px;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(1180px, 94%);
  }

  .slider-btn {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .board-table {
    min-width: 460px;
  }
}