:root {
  --navy: #13477f;
  --blue: #1d8ff7;
  --deep-blue: #0f64cf;
  --sky: #dff5ff;
  --ocean: #63c6ff;
  --orange: #ff6f1a;
  --orange-deep: #ef4a00;
  --yellow: #ffe77a;
  --green: #9ce06c;
  --green-deep: #59b447;
  --white: #ffffff;
  --ink: #15385c;
  --shadow: 0 16px 35px rgba(23, 75, 135, 0.16);
  --soft-shadow: 0 12px 24px rgba(23, 75, 135, 0.1);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Nunito", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #e8f8ff 0%, #f7fdff 25%, #eefbff 100%);
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1120px, calc(100% - 1.5rem));
  margin: 0 auto;
}

.page-shell {
  overflow: hidden;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(19, 71, 127, 0.08);
}

.nav-wrap,
.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
  color: var(--navy);
}

.brand-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, #fff6a0, #ffd54c);
  border-radius: 50%;
  box-shadow: var(--soft-shadow);
  font-size: 1.5rem;
}

.brand strong,
.brand span {
  display: block;
}

.brand strong {
  font-family: "Fredoka", sans-serif;
  font-size: 1.2rem;
}

.brand span {
  color: #4b79a8;
  font-size: 0.9rem;
}

.nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--navy);
  font-weight: 800;
}

.hero-poster {
  position: relative;
  padding: 3rem 0 0;
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.75), transparent 20%),
    radial-gradient(circle at top right, rgba(255,255,255,0.8), transparent 16%),
    linear-gradient(180deg, #9edfff 0%, #d8f4ff 48%, #ebfbff 100%);
}

.hero-inner {
  position: relative;
  text-align: center;
  padding: 2rem 0 9rem;
}

.cloud {
  position: absolute;
  width: 150px;
  height: 60px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 999px;
  filter: blur(0.2px);
}

.cloud::before,
.cloud::after {
  content: "";
  position: absolute;
  background: inherit;
  border-radius: 50%;
}

.cloud::before {
  width: 64px;
  height: 64px;
  left: 18px;
  top: -18px;
}

.cloud::after {
  width: 72px;
  height: 72px;
  right: 14px;
  top: -26px;
}

.cloud-a { top: 50px; left: 6%; }
.cloud-b { top: 60px; right: 9%; }
.cloud-c { top: 130px; right: 28%; transform: scale(0.8); }

.sun {
  width: 88px;
  height: 88px;
  margin: 0 auto 0.8rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 2rem;
  background: radial-gradient(circle at 35% 30%, #fff5a0, #ffc72b 70%, #ffae00 100%);
  box-shadow: 0 0 0 12px rgba(255, 200, 41, 0.25), 0 0 0 24px rgba(255, 200, 41, 0.12);
}

.mini-kicker,
.section-label {
  margin: 0 0 0.8rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--orange-deep);
}

h1,
h2,
h3,
.cta-title {
  font-family: "Fredoka", sans-serif;
}

.hero-poster h1 {
  margin: 0;
  font-size: clamp(3.2rem, 9vw, 6.5rem);
  line-height: 0.95;
  text-shadow: 0 4px 0 rgba(255, 255, 255, 0.95), 0 10px 18px rgba(22, 74, 131, 0.12);
}

.hero-poster h1 span,
.hero-poster h1 small {
  display: block;
}

.blue-text {
  color: var(--blue);
  -webkit-text-stroke: 2px rgba(18, 89, 161, 0.25);
}

.orange-text {
  color: var(--orange);
  -webkit-text-stroke: 2px rgba(180, 62, 0, 0.18);
}

.hero-poster h1 small {
  font-size: clamp(1.5rem, 4vw, 2.6rem);
  color: var(--white);
  margin-top: 0.5rem;
  text-shadow: none;
  display: inline-block;
  padding: 0.45rem 1.4rem;
  border-radius: 999px;
  background: linear-gradient(180deg, #2d89ea, #0d5ec2);
  box-shadow: var(--soft-shadow);
}

.hero-copy {
  width: min(720px, calc(100% - 1rem));
  margin: 1.2rem auto 0;
  font-size: clamp(1.05rem, 2.2vw, 1.28rem);
  line-height: 1.7;
  color: #28537f;
}

.bubble-pills {
  margin: 2rem auto 0;
  display: grid;
  gap: 1rem;
  width: min(620px, 100%);
}

.pill {
  padding: 1rem 1.3rem;
  border-radius: 999px;
  font-family: "Fredoka", sans-serif;
  font-size: clamp(1rem, 2.8vw, 1.6rem);
  box-shadow: var(--soft-shadow);
  border: 4px solid rgba(255, 255, 255, 0.9);
}

.pill-yellow { background: linear-gradient(180deg, #fff4a8, #ffd85b); color: #9c5710; }
.pill-blue { background: linear-gradient(180deg, #c8f0ff, #94d8ff); color: #19558e; }
.pill-green { background: linear-gradient(180deg, #c8f5a1, #92dd5b); color: #245c2a; }

.hero-characters {
  margin: 2rem auto 1rem;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: clamp(1rem, 5vw, 5rem);
  font-size: clamp(2.6rem, 7vw, 5rem);
}

.character,
.dolphin {
  filter: drop-shadow(0 8px 14px rgba(15, 70, 128, 0.14));
}

.cta-stack {
  margin-top: 1.5rem;
}

.cta-title {
  margin: 0 0 0.7rem;
  color: var(--orange);
  font-size: clamp(2.3rem, 6vw, 4rem);
  text-shadow: 0 5px 0 rgba(255,255,255,0.85);
}

.cta-ribbon {
  width: min(640px, calc(100% - 1rem));
  margin: 0.8rem auto 0;
  padding: 1rem 1.3rem;
  border-radius: 20px;
  background: linear-gradient(180deg, #ff8c24, #f35e0e);
  color: var(--white);
  font-family: "Fredoka", sans-serif;
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  box-shadow: var(--soft-shadow);
}

.cta-ribbon.green {
  background: linear-gradient(180deg, #73cd4d, #3f9f34);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 190px;
  border: 0;
  border-radius: 999px;
  padding: 0.95rem 1.35rem;
  font-family: "Fredoka", sans-serif;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px) scale(1.01);
}

.btn-primary {
  color: var(--white);
  background: linear-gradient(180deg, #ff8e2b, #f25b0b);
  box-shadow: 0 14px 24px rgba(242, 91, 11, 0.22);
}

.btn-secondary {
  color: var(--navy);
  background: linear-gradient(180deg, #ffffff, #ecf8ff);
  box-shadow: var(--soft-shadow);
}

.btn-full {
  width: 100%;
}

.ocean-band {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 170px;
  background: linear-gradient(180deg, rgba(111, 206, 255, 0) 0%, rgba(111, 206, 255, 0.2) 100%);
}

.wave {
  position: absolute;
  left: -2%;
  right: -2%;
  border-radius: 45% 55% 0 0 / 100% 100% 0 0;
}

.wave-one {
  bottom: 0;
  height: 110px;
  background: linear-gradient(180deg, #4ebcff, #1798ef);
}

.wave-two {
  bottom: 38px;
  height: 72px;
  background: rgba(255, 255, 255, 0.55);
}

.bubble {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.58);
}

.bubble-one { width: 22px; height: 22px; right: 18%; bottom: 105px; }
.bubble-two { width: 14px; height: 14px; left: 14%; bottom: 82px; }
.bubble-three { width: 28px; height: 28px; left: 27%; bottom: 112px; }

.section {
  padding: 4.8rem 0;
}

.section-soft {
  background: linear-gradient(180deg, #fffdf4, #f3fbff);
}

.two-column,
.contact-grid,
.cta-panel,
.card-grid {
  display: grid;
  gap: 2rem;
}

.two-column,
.contact-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
}

.playful-panel,
.undersea-panel,
.contact-form,
.lesson-card,
.poster-card {
  background: rgba(255,255,255,0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.playful-panel {
  padding: 2rem;
}

.section h2 {
  margin: 0 0 1rem;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.section p,
.contact-points,
.feature-list,
.form-note,
.site-footer {
  color: #4a6c92;
  line-height: 1.75;
}

.poster-card {
  padding: 1rem;
  text-align: center;
}

.poster-card img {
  border-radius: 22px;
  border: 6px solid #ffffff;
}

.section-heading {
  margin-bottom: 2rem;
  text-align: center;
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.lesson-card {
  padding: 1.6rem;
  text-align: center;
  border: 4px solid rgba(255,255,255,0.85);
}

.lesson-card h3 {
  margin: 0 0 0.4rem;
  color: var(--navy);
  font-size: 1.7rem;
}

.price {
  margin: 0 0 0.8rem;
  font-family: "Fredoka", sans-serif;
  font-size: 1.1rem;
}

.orange-card { background: linear-gradient(180deg, #fff3e6, #ffe0c8); }
.blue-card { background: linear-gradient(180deg, #ebf8ff, #d3efff); }
.green-card { background: linear-gradient(180deg, #f1ffe8, #def9c8); }

.undersea-section {
  background:
    radial-gradient(circle at 10% 80%, rgba(111, 206, 255, 0.2), transparent 20%),
    radial-gradient(circle at 90% 15%, rgba(111, 206, 255, 0.16), transparent 22%),
    linear-gradient(180deg, #edfaff, #f9fffd);
}

.undersea-panel {
  grid-template-columns: 1.2fr 1fr;
  padding: 2rem;
  align-items: center;
}

.feature-list {
  margin: 0;
  padding-left: 1.2rem;
  font-weight: 800;
}

.contact-form {
  padding: 1.5rem;
}

.contact-form label {
  display: block;
  margin-bottom: 1rem;
  font-weight: 800;
  color: var(--navy);
}

input,
textarea {
  width: 100%;
  margin-top: 0.45rem;
  padding: 0.95rem 1rem;
  border-radius: 18px;
  border: 2px solid #d6ecfb;
  background: #fbfeff;
  font: inherit;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: #82cfff;
  box-shadow: 0 0 0 4px rgba(130, 207, 255, 0.18);
}

.site-footer {
  padding: 1rem 0 2rem;
}

@media (max-width: 900px) {
  .two-column,
  .contact-grid,
  .undersea-panel,
  .three-up {
    grid-template-columns: 1fr;
  }

  .nav-wrap,
  .footer-wrap {
    flex-direction: column;
    text-align: center;
  }

  .hero-inner {
    padding-bottom: 8rem;
  }
}

@media (max-width: 640px) {
  .nav {
    justify-content: center;
  }

  .hero-poster {
    padding-top: 2rem;
  }

  .sun {
    width: 72px;
    height: 72px;
    font-size: 1.5rem;
  }

  .pill,
  .cta-ribbon {
    border-radius: 22px;
  }

  .playful-panel,
  .undersea-panel,
  .contact-form,
  .lesson-card,
  .poster-card {
    border-radius: 24px;
  }
}