:root {
  --navy: #061826;
  --deep-navy: #03111c;
  --cyan: #27d4e8;
  --cyan-soft: rgba(39, 212, 232, 0.18);
  --white: #ffffff;
  --muted: #b9cad6;
  --card: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.16);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Poppins", sans-serif;
  background: #f4f8fb;
  color: #102535;
}

.launch-header {
  min-height: 100vh;
  background:
    linear-gradient(rgba(3, 17, 28, 0.78), rgba(3, 17, 28, 0.88)),
    url("https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1600&q=80");
  background-size: cover;
  background-position: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.launch-header::after {
  content: "";
  position: absolute;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(39, 212, 232, 0.22), transparent 65%);
  right: -220px;
  top: 130px;
  pointer-events: none;
}

.navbar {
  width: min(1180px, 92%);
  margin: 0 auto;
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 2;
  transition: all 0.3s ease;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-circle {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), #ffffff);
  color: var(--navy);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 22px;
  box-shadow: 0 10px 30px rgba(39, 212, 232, 0.35);
}

.brand h1 {
  font-family: "Libre Baskerville", serif;
  font-size: 24px;
  line-height: 1.1;
}

.brand p {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links a {
  color: #eaf8fb;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--cyan);
}

.nav-login-btn,
.primary-btn,
.secondary-btn {
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  border-radius: 999px;
  transition: 0.25s ease;
}

.nav-login-btn {
  padding: 11px 20px;
  background: var(--cyan);
  color: var(--navy);
}

.primary-btn {
  padding: 15px 30px;
  background: var(--cyan);
  color: var(--navy);
  box-shadow: 0 14px 35px rgba(39, 212, 232, 0.28);
}

.secondary-btn {
  padding: 15px 30px;
  background: rgba(255, 255, 255, 0.08);
  color: white;
  border: 1px solid var(--border);
}

.primary-btn:hover,
.nav-login-btn:hover {
  transform: translateY(-2px);
  background: #65edfa;
}

.secondary-btn:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.hero {
  width: min(1180px, 92%);
  margin: 0 auto;
  min-height: calc(100vh - 110px);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 70px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  background: var(--cyan-soft);
  border: 1px solid rgba(39, 212, 232, 0.4);
  color: #bff8ff;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 13px;
  margin-bottom: 22px;
}

.hero h2 {
  font-size: clamp(42px, 5vw, 72px);
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero p {
  color: #d6e7ef;
  font-size: 18px;
  line-height: 1.8;
  max-width: 650px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-top: 34px;
  flex-wrap: wrap;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 32px;
  padding: 22px;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.mock-window {
  background: rgba(3, 17, 28, 0.82);
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.window-dots {
  padding: 18px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}

.window-dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.85;
}

.mock-content {
  padding: 26px;
}

.reading-card {
  background: linear-gradient(135deg, rgba(39, 212, 232, 0.22), rgba(255, 255, 255, 0.07));
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  margin-bottom: 20px;
}

.reading-card span {
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
}

.reading-card h3 {
  margin: 10px 0;
  font-size: 23px;
}

.reading-card p {
  font-size: 14px;
  color: #cddce4;
  line-height: 1.6;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.mini-grid div {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 14px;
  font-size: 13px;
  text-align: center;
}

.progress-box {
  margin-top: 22px;
  background: rgba(255, 255, 255, 0.08);
  padding: 18px;
  border-radius: 18px;
}

.progress-box span {
  font-size: 13px;
  color: var(--muted);
}

.progress-line {
  height: 8px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  margin: 12px 0;
  overflow: hidden;
}

.progress-line div {
  width: 72%;
  height: 100%;
  background: var(--cyan);
  border-radius: 20px;
}

.section {
  width: min(1180px, 92%);
  margin: 0 auto;
  padding: 95px 0;
}

.section-heading {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 52px;
}

.section-heading span,
.small-title {
  color: #008fa3;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  font-size: 13px;
}

.section-heading h2,
.split-section h2,
.final-cta h2 {
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.15;
  margin: 14px 0;
  color: var(--navy);
}

.section-heading p,
.split-section p {
  color: #526878;
  font-size: 17px;
  line-height: 1.8;
}

/* ... devamı mevcut dosyada olduğu gibi ... */
.mission-grid,
.steps-grid,
.student-grid,
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.info-card,
.step-card,
.student-card,
.testimonial-card,
.teacher-panel-card {
  background: white;
  border-radius: 26px;
  padding: 32px;
  box-shadow: 0 18px 45px rgba(6, 24, 38, 0.08);
  border: 1px solid rgba(6, 24, 38, 0.06);
}

.info-card h3,
.step-card h3,
.student-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  color: var(--navy);
}

.info-card p,
.step-card p,
.student-card p,
.testimonial-card p {
  color: #607482;
  line-height: 1.75;
}

.dark-section {
  width: 100%;
  max-width: none;
  background: var(--navy);
  color: white;
  padding: 90px max(4%, calc((100% - 1180px) / 2));
}

.dark-section .split-section h2,
.dark-section .split-section p {
  color: white;
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}

.vision-list {
  display: grid;
  gap: 14px;
}

.vision-list div {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  padding: 18px 22px;
  border-radius: 18px;
}

.step-card span {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  background: var(--cyan-soft);
  color: #008fa3;
  border-radius: 50%;
  font-weight: 800;
  margin-bottom: 18px;
}

.levels-section {
  background: #eaf6f9;
  width: 100%;
  max-width: none;
  padding-left: max(4%, calc((100% - 1180px) / 2));
  padding-right: max(4%, calc((100% - 1180px) / 2));
}

.levels-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}

.level-card {
  background: white;
  border-radius: 24px;
  padding: 30px 18px;
  text-align: center;
  font-size: 34px;
  font-weight: 800;
  color: var(--navy);
  box-shadow: 0 14px 35px rgba(6, 24, 38, 0.08);
}

.level-card span {
  display: block;
  font-size: 13px;
  color: #607482;
  margin-top: 8px;
  font-weight: 600;
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.activity-grid div {
  background: var(--navy);
  color: white;
  border-radius: 22px;
  padding: 26px;
  text-align: center;
  font-weight: 700;
  box-shadow: 0 16px 35px rgba(6, 24, 38, 0.15);
}

.teacher-section {
  background: linear-gradient(135deg, #eaf6f9, #ffffff);
  width: 100%;
  max-width: none;
  padding-left: max(4%, calc((100% - 1180px) / 2));
  padding-right: max(4%, calc((100% - 1180px) / 2));
}

.teacher-section .primary-btn {
  margin-top: 28px;
}

.teacher-panel-card h3 {
  font-size: 28px;
  color: var(--navy);
  margin-bottom: 24px;
}

.analytics-row {
  display: flex;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid #e1edf1;
}

.analytics-row span {
  color: #607482;
}

.analytics-row strong {
  color: #008fa3;
  font-size: 24px;
}

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

.stats-section {
  width: 100%;
  max-width: none;
  background: var(--deep-navy);
  padding-left: max(4%, calc((100% - 1180px) / 2));
  padding-right: max(4%, calc((100% - 1180px) / 2));
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
  gap: 20px;
}

.stats-grid div {
  color: white;
}

.stats-grid strong {
  display: block;
  font-size: 52px;
  color: var(--cyan);
}

.stats-grid span {
  color: var(--muted);
}

.testimonial-card {
  font-style: italic;
}

.testimonial-card strong {
  display: block;
  margin-top: 18px;
  color: var(--navy);
  font-style: normal;
}

.final-cta {
  text-align: center;
  padding: 100px 20px;
  background:
    linear-gradient(rgba(6, 24, 38, 0.84), rgba(6, 24, 38, 0.88)),
    url("https://images.unsplash.com/photo-1519681393784-d120267933ba?auto=format&fit=crop&w=1600&q=80");
  background-size: cover;
  background-position: center;
  color: white;
}

.final-cta h2 {
  color: white;
}

.final-cta p {
  color: #d6e7ef;
  margin-bottom: 32px;
  font-size: 18px;
}

.footer {
  background: #020b12;
  color: #9fb3bf;
  text-align: center;
  padding: 26px;
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .mission-grid,
  .steps-grid,
  .student-grid,
  .testimonial-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

@media (max-width: 640px) {
  .brand h1 {
    font-size: 18px;
  }

  .logo-circle {
    width: 48px;
    height: 48px;
  }

  .hero {
    gap: 36px;
  }

  .hero h2 {
    font-size: 38px;
  }

  .mission-grid,
  .steps-grid,
  .student-grid,
  .testimonial-grid,
  .levels-grid,
  .activity-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
  }
}