/* TapToLearn — shared styles */

:root {
  --green: #4A7C3F;
  --green-dark: #3a6431;
  --green-light: #e8f1e5;
  --red: #D93025;
  --red-dark: #b3261e;
  --charcoal: #2D2D2D;
  --text: #2D2D2D;
  --muted: #6b6b6b;
  --bg: #FAFAFA;
  --card: #ffffff;
  --gray-1: #F4F4F2;
  --gray-2: #E8E8E5;
  --border: #ECECE8;
  --yellow: #F5C842;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 3px rgba(20,20,20,0.06), 0 1px 2px rgba(20,20,20,0.04);
  --shadow:    0 4px 12px rgba(20,20,20,0.06), 0 2px 4px rgba(20,20,20,0.04);
  --shadow-lg: 0 18px 40px rgba(20,20,20,0.10), 0 6px 14px rgba(20,20,20,0.06);

  --container: 1180px;
  --font-display: 'Fredoka', 'Nunito', system-ui, sans-serif;
  --font-body: 'Nunito', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-dark); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--charcoal);
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); line-height: 1.05; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1.15; }
h3 { font-size: 1.3rem; line-height: 1.2; }
p  { margin: 0 0 1em; text-wrap: pretty; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Top utility bar ===== */
.topbar {
  background: var(--charcoal);
  color: #cdcdc9;
  font-size: 13px;
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 38px; gap: 16px;
}
.topbar .social { display: flex; gap: 8px; }
.topbar .social a {
  width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; color: #cdcdc9; transition: background .15s, color .15s;
}
.topbar .social a:hover { background: rgba(255,255,255,0.1); color: #fff; }
.topbar .topbar-search {
  position: relative;
}
.topbar input[type=search] {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: #fff;
  padding: 6px 12px 6px 32px;
  border-radius: 999px;
  font-size: 13px;
  width: 220px;
  font-family: inherit;
  outline: none;
}
.topbar input[type=search]::placeholder { color: #aaa; }
.topbar input[type=search]:focus { border-color: var(--green); background: rgba(255,255,255,0.12); }
.topbar .topbar-search svg {
  position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
  width: 14px; height: 14px; color: #aaa;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.nav-logo img { height: 44px; width: auto; }
.nav-links {
  display: flex; align-items: center; gap: 4px;
  list-style: none; padding: 0; margin: 0;
}
.nav-links a {
  display: inline-block;
  color: var(--charcoal);
  font-weight: 600;
  font-size: 15px;
  padding: 10px 16px;
  border-radius: 999px;
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: var(--gray-1); color: var(--green); }
.nav-links a.active {
  background: var(--green-light); color: var(--green-dark);
}
.nav-links .nav-cta {
  background: var(--green); color: #fff !important; margin-left: 6px;
}
.nav-links .nav-cta:hover { background: var(--green-dark); color: #fff !important; }

.nav-toggle {
  display: none;
  background: none; border: 0; padding: 8px;
  cursor: pointer; color: var(--charcoal);
}
.nav-toggle svg { width: 28px; height: 28px; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: #fff; padding: 12px 16px 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 16px; border-radius: var(--radius-sm); }
  .nav-links .nav-cta { margin-left: 0; margin-top: 4px; text-align: center; }
  .topbar input[type=search] { width: 140px; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--green); color: #fff;
  font-family: var(--font-body); font-weight: 700; font-size: 16px;
  padding: 13px 26px; border-radius: 10px; border: 0;
  cursor: pointer;
  transition: background .15s, transform .15s, box-shadow .15s;
  text-decoration: none;
}
.btn:hover { background: var(--green-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }
.btn-red { background: var(--red); }
.btn-red:hover { background: var(--red-dark); }
.btn-outline {
  background: #fff; color: var(--green); border: 1.5px solid var(--green);
}
.btn-outline:hover { background: var(--green-light); color: var(--green-dark); }
.btn-lg { padding: 16px 32px; font-size: 17px; }

/* ===== Page banner ===== */
.page-banner {
  position: relative;
  height: 220px;
  background-size: cover;
  background-position: center;
  display: flex; align-items: center;
  border-bottom: 1px solid var(--border);
}
.page-banner::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.18) 0%, rgba(0,0,0,0) 60%);
  pointer-events: none;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 {
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35), 0 0 1px rgba(0,0,0,0.4);
  -webkit-text-stroke: 1px rgba(0,0,0,0.15);
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0;
}
@media (max-width: 640px) { .page-banner { height: 160px; } }

/* ===== Cards ===== */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: #d8e6d2; }

/* ===== App icon styling ===== */
.app-icon {
  width: 96px; height: 96px;
  border-radius: 22px;
  box-shadow: 0 6px 14px rgba(20,20,20,0.12), 0 1px 3px rgba(20,20,20,0.08);
  background: #fff;
  object-fit: cover;
  transition: transform .2s ease, box-shadow .2s ease;
}
.app-icon-lg { width: 144px; height: 144px; border-radius: 30px; }
.app-icon-sm { width: 64px; height: 64px; border-radius: 16px; }
.card:hover .app-icon { transform: scale(1.05); }

/* ===== Sections ===== */
section { padding: 80px 0; }
section.tight { padding: 56px 0; }
section.alt { background: var(--gray-1); }
.section-eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 800;
  font-size: 12px;
  color: var(--green);
  margin-bottom: 12px;
}
.section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section-head p { color: var(--muted); font-size: 1.05rem; }

/* ===== Footer ===== */
.site-footer {
  background: var(--charcoal);
  color: #d6d6d2;
  padding: 56px 0 28px;
  margin-top: 80px;
}
.site-footer .footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px;
  margin-bottom: 36px;
}
@media (max-width: 720px) { .site-footer .footer-grid { grid-template-columns: 1fr; gap: 32px; } }
.site-footer h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 14px; font-family: var(--font-body); font-weight: 800; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-footer a { color: #d6d6d2; }
.site-footer a:hover { color: #fff; }
.site-footer .footer-brand img { height: 48px; margin-bottom: 14px; background: #fff; padding: 8px 14px; border-radius: 12px; }
.site-footer .footer-brand p { color: #a4a49f; font-size: 14px; max-width: 320px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 22px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px;
  font-size: 13px; color: #8a8a85;
}
.footer-bottom .social { display: flex; gap: 10px; }
.footer-bottom .social a {
  width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; background: rgba(255,255,255,0.06); color: #d6d6d2;
}
.footer-bottom .social a:hover { background: var(--green); color: #fff; }

/* ===== Carousel ===== */
.carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--gray-1);
}
.carousel-track {
  display: flex;
  transition: transform .55s cubic-bezier(.4,.1,.2,1);
  will-change: transform;
}
.carousel-slide {
  flex: 0 0 100%;
  min-width: 0;
}
.carousel-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,0.92);
  border: 0; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
  color: var(--charcoal);
  transition: background .15s, transform .15s;
  z-index: 3;
}
.carousel-btn:hover { background: #fff; transform: translateY(-50%) scale(1.05); }
.carousel-btn.prev { left: 14px; }
.carousel-btn.next { right: 14px; }
.carousel-btn svg { width: 20px; height: 20px; }
.carousel-dots {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; z-index: 3;
}
.carousel-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: rgba(255,255,255,0.55);
  border: 0; padding: 0; cursor: pointer;
  transition: background .2s, transform .2s, width .2s;
}
.carousel-dot:hover { background: #fff; }
.carousel-dot.active { background: #fff; width: 24px; border-radius: 999px; }

/* Hero carousel specific */
.hero-carousel { aspect-ratio: 24 / 10; min-height: 360px; max-height: 560px; }
.hero-carousel .carousel-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 640px) { .hero-carousel { aspect-ratio: 4 / 3; min-height: 0; } }

/* Screenshot carousel (phone-style) */
.screenshot-carousel { background: linear-gradient(180deg, #f7f7f4 0%, #ececea 100%); padding: 32px 0; }
.screenshot-carousel .carousel-slide {
  display: flex; align-items: center; justify-content: center;
  padding: 8px 24px;
}
.screenshot-carousel .carousel-slide img {
  max-height: 380px; max-width: 100%; width: auto;
  border-radius: 18px;
  box-shadow: 0 12px 28px rgba(20,20,20,0.18), 0 2px 6px rgba(20,20,20,0.10);
}
@media (max-width: 640px) {
  .screenshot-carousel .carousel-slide img { max-height: 260px; }
}

/* Thumbnail strip below carousel */
.thumb-strip {
  display: flex; gap: 10px; overflow-x: auto; padding: 14px 4px 4px;
  scrollbar-width: thin;
}
.thumb-strip button {
  flex: 0 0 auto; padding: 0; border: 2px solid transparent; border-radius: 10px;
  background: transparent; cursor: pointer; transition: border-color .15s, transform .15s;
}
.thumb-strip button img { height: 64px; width: auto; border-radius: 8px; display: block; }
.thumb-strip button:hover { transform: translateY(-2px); }
.thumb-strip button.active { border-color: var(--green); }

/* ===== Misc helpers ===== */
.eyebrow-pill {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--green-light); color: var(--green-dark);
  font-weight: 700; font-size: 13px;
  padding: 6px 12px; border-radius: 999px;
  text-transform: uppercase; letter-spacing: 0.08em;
}
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
@media (max-width: 960px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ===== Tag pills for product features ===== */
.feature-pills { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.feature-pills li {
  background: var(--green-light); color: var(--green-dark);
  padding: 7px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 700;
}