/* General */
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f5f5f5;
  color: #222;
  line-height: 1.6;
}

/* Header */
.hero {
  background-color: #000;
  color: #fff;
  text-align: center;
  padding: 60px 20px;
  position: relative;
  overflow: hidden;
}

.hero h1 {
  font-size: 36px;
  margin-bottom: 10px;
}

.hero p {
  font-size: 16px;
  margin-bottom: 20px;
}

/* Home icon (top-left) */
.home-link {
  position: absolute;
  left: 18px;
  top: 18px;
  display: block;
  z-index: 30;
}
.home-icon {
  width: 40px;
  height: 40px;
  display: block;
}

@media (max-width: 640px) {
  .home-link { left: 12px; top: 12px; }
  .home-icon { width: 34px; height: 34px; }
}

/* Home tooltip (shows site pages) */
.home-tooltip {
  position: absolute;
  left: 52px;
  top: 6px;
  min-width: 140px;
  background: #ffffff;
  color: #111;
  padding: 8px 10px;
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.14);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 180ms ease, transform 180ms ease;
  font-size: 14px;
  z-index: 40;
}
.home-tooltip ul { margin: 0; padding: 0; list-style: none; }
.home-tooltip li { padding: 6px 2px; }
.home-tooltip li + li { border-top: 1px solid rgba(0,0,0,0.06); }

/* show tooltip when hovering or focusing the home link */
.home-link:hover .home-tooltip,
.home-link:focus-within .home-tooltip {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 640px) {
  .home-tooltip { left: 46px; top: 8px; min-width: 120px; font-size: 13px; }
}

/* Button */
.btn {
  display: inline-block;
  background-color: #fff;
  color: #000;
  padding: 14px 28px;
  text-decoration: none;
  font-weight: bold;
  border-radius: 6px;
}

.btn:hover {
  background-color: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
}

/* Sections */
.section {
  max-width: 900px;
  margin: auto;
  padding: 40px 20px;
}

.section h2 {
  text-align: center;
  margin-bottom: 20px;
}

.section h2 {
  position: relative;
}
.section h2::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  background: #ffd54f;
  margin: 12px auto 0 auto;
  border-radius: 2px;
}

.light {
  background-color: #ffffff;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.card {
  background-color: #f0f0f0;
  padding: 20px;
  border-radius: 8px;
  text-align: center;
}

/* Text helpers */
.center {
  text-align: center;
}

.testimonial {
  text-align: center;
  font-style: italic;
}

/* Footer */
footer {
  text-align: center;
  padding: 20px;
  background-color: #e0e0e0;
  font-size: 14px;
}

/* Genres */
.genre-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.genre {
  background: #fafafa;
  padding: 14px;
  border-radius: 8px;
  text-align: center;
  font-weight: bold;
}

/* Top picks / book cards */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.book-card {
  background: #ffffff;
  padding: 16px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.book-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}
.book-card h3 {
  margin: 0 0 6px 0;
}
.muted {
  color: #666;
  font-size: 14px;
  margin-bottom: 8px;
}

/* Subscribe form */
.subscribe-form {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 12px;
}
.subscribe-form input[type="email"] {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  min-width: 220px;
}

/* Image styles */
.hero-img {
  display: block;
  max-width: 900px;
  width: 100%;
  height: auto;
  margin: 0 auto 18px auto;
  border-radius: 6px;
}
.book-thumb {
  display: block;
  width: 100%;
  max-width: 160px;
  height: auto;
  margin: 0 auto 12px auto;
}

/* Hero decorations */
.hero-decor {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 12px;
}
.hero-decor .decor {
  width: 120px;
  height: auto;
  opacity: 0.95;
  border-radius: 6px;
}

/* Sign-in styles */
.sign-in-wrapper {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 28px;
  align-items: center;
  justify-content: center;
}
.sign-in-img {
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: 8px;
}
.signin-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 320px;
  margin: 0 auto;
}
.signin-form label {
  font-size: 14px;
  color: #333;
}
.signin-form input[type="email"],
.signin-form input[type="password"] {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
}
.signin-row {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

@media (max-width: 840px) {
  .sign-in-wrapper { grid-template-columns: 1fr; }
  .sign-in-img { max-width: 320px; margin: 0 auto; }
}

/* Decorative hero layers using pseudo elements */
.hero::before {
  content: "";
  position: absolute;
  left: -8%;
  top: -28%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle at 20% 20%, rgba(99,102,241,0.16), transparent 40%);
  transform: rotate(-12deg);
}
.hero::after {
  content: "";
  position: absolute;
  right: -4%;
  bottom: -18%;
  width: 50%;
  height: 50%;
  background: radial-gradient(circle at 80% 80%, rgba(234,88,12,0.08), transparent 40%);
}

/* Responsive tweaks */
@media (max-width: 640px) {
  .hero-img { max-width: 100%; }
  .hero-decor { gap: 6px; }
  .hero-decor .decor { width: 88px; }
  .feature-icon { width: 40px; height: 40px; }
  .book-thumb { max-width: 120px; }
  .section { padding: 28px 12px; }
  .hero { padding: 40px 12px; }
}

/* Feature icons */
.feature-icon {
  width: 48px;
  height: 48px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 10px;
}
.card { 
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: #f0f0f0;
  padding: 16px;
  border-radius: 8px;
  text-align: left;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}