:root {
  --bg: #0b0d10;
  --panel: #161b22;
  --text: #f5f1e8;
  --muted: #b8b2a7;
  --subtle: #7d848c;
  --accent: #b08d57;
  --border: rgba(245, 241, 232, 0.12);
  --max-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Georgia, "Times New Roman", serif;
  background:
    radial-gradient(circle at top left, rgba(176, 141, 87, 0.12), transparent 30%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.035), transparent 25%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.hidden {
  display: none;
}

.site-header {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
}

.brand {
  display: grid;
  grid-template-columns: 56px auto;
  align-items: center;
  gap: 12px;
}

.brand-logo-wrap {
  width: 56px;
  height: 56px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-mark {
  width: 48px;
  height: 48px;
  max-width: 48px;
  max-height: 48px;
  object-fit: contain;
  display: block;
}

.brand-text {
  font-size: 0.95rem;
  line-height: 0.88;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  place-items: center;
  gap: 5px;
  padding: 10px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: 0.25s ease;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 22px;
  font-family: Arial, sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.main-nav a,
.powered-by a {
  transition: 0.25s ease;
}

.main-nav a:hover,
.powered-by a:hover {
  color: var(--accent);
}

.language-switcher {
  display: flex;
  gap: 6px;
}

.language-switcher button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 9px;
  cursor: pointer;
  font-size: 0.72rem;
}

.language-switcher button.active,
.language-switcher button:hover {
  color: var(--text);
  border-color: var(--accent);
}

.section {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
  padding: 96px 0;
}

.eyebrow {
  color: var(--accent);
  font-family: Arial, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

h1 {
  font-size: clamp(3.4rem, 8vw, 7.6rem);
  line-height: 0.92;
  letter-spacing: -0.06em;
  max-width: 920px;
}

h2 {
  font-size: clamp(2.2rem, 5vw, 4.8rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

h3 {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.hero-text,
.section p,
.feature-card p {
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 1rem;
  max-width: 680px;
}

.btn {
  display: inline-block;
  padding: 13px 18px;
  border: 1px solid var(--border);
  font-family: Arial, sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: 0.25s ease;
  cursor: pointer;
}

.btn.primary {
  background: var(--accent);
  color: #101010;
  border-color: var(--accent);
}

.btn.secondary {
  color: var(--text);
}

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

.hero {
  min-height: 78vh;
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  align-items: center;
  gap: 60px;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 28%, rgba(176, 141, 87, 0.16), transparent 28%),
    radial-gradient(circle at 15% 60%, rgba(0, 174, 239, 0.08), transparent 24%),
    linear-gradient(135deg, rgba(255,255,255,0.03), transparent 40%);
  pointer-events: none;
  z-index: -1;
}

.hero-text {
  margin-top: 28px;
  font-size: 1.1rem;
}

.hero-actions {
  margin-top: 36px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-visual {
  min-height: 540px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-mockup {
  width: min(360px, 100%);
  aspect-ratio: 0.72 / 1;
  padding: 42px 36px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.01)),
    #101317;
  border: 1px solid rgba(176, 141, 87, 0.35);
  box-shadow:
    0 40px 90px rgba(0,0,0,0.55),
    inset 18px 0 18px rgba(255,255,255,0.03);
  transform: rotate(5deg);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.book-seal {
  width: 44px;
  height: 44px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-weight: bold;
  margin-bottom: 40px;
}

.book-mockup h2 {
  font-size: clamp(2.4rem, 4vw, 4rem);
  line-height: 0.9;
  color: var(--text);
}

.book-edition {
  margin-top: auto;
  color: var(--accent);
  font-family: Arial, sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.book-description {
  margin-top: 18px;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.92rem;
  line-height: 1.45;
  max-width: 220px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
  border-top: 1px solid var(--border);
}

.grid-section {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-bottom: 96px;
}

.feature-card,
.dark-panel {
  background: var(--panel);
  border: 1px solid var(--border);
}

.feature-card {
  position: relative;
  overflow: hidden;
  padding: 32px;
  min-height: 260px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.012)),
    var(--panel);
}

.feature-card::before {
  content: "";
  display: block;
  height: 180px;
  margin: -32px -32px 28px;
  background:
    linear-gradient(180deg, rgba(176,141,87,0.18), rgba(0,0,0,0.65)),
    radial-gradient(circle at 50% 30%, rgba(245,241,232,0.18), transparent 35%),
    #0e1116;
  border-bottom: 1px solid var(--border);
}

.feature-card::after {
  content: "P";
  position: absolute;
  top: 48px;
  right: 42px;
  color: rgba(176,141,87,0.24);
  font-size: 4rem;
}

.dark-panel {
  position: relative;
  overflow: hidden;
  padding: 64px;
  background:
    linear-gradient(120deg, rgba(176,141,87,0.12), transparent 38%),
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01)),
    var(--panel);
}

.dark-panel::after {
  content: "";
  position: absolute;
  inset: auto -20% -40% auto;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(176,141,87,0.16), transparent 62%);
  pointer-events: none;
}

.philosophy {
  position: relative;
  min-height: 420px;
  display: grid;
  place-items: center;
  text-align: center;
  overflow: hidden;
}

.philosophy p {
  margin: 0 auto;
}

.philosophy::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(11,13,16,0.95), rgba(11,13,16,0.45)),
    radial-gradient(circle at 80% 50%, rgba(176,141,87,0.13), transparent 28%),
    linear-gradient(135deg, rgba(255,255,255,0.04), transparent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  z-index: -2;
}

.philosophy::after {
  content: "P";
  position: absolute;
  right: 8%;
  bottom: 10%;
  width: 190px;
  height: 190px;
  border: 1px solid rgba(176,141,87,0.2);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: rgba(176,141,87,0.13);
  font-size: 7rem;
  z-index: -1;
}

.contact {
  text-align: center;
  border-top: 1px solid var(--border);
}

.contact-form {
  max-width: 760px;
  margin: 36px auto 0;
  display: grid;
  gap: 18px;
  text-align: left;
  font-family: Arial, sans-serif;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  background: rgba(255,255,255,0.035);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 13px 14px;
  font: inherit;
  outline: none;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
}

.site-footer {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 56px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  color: var(--subtle);
  font-family: Arial, sans-serif;
  font-size: 0.85rem;
}

.footer-left {
  display: grid;
  gap: 8px;
}

.footer-socials {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

.footer-socials a {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--muted);
  transition: 0.25s ease;
  background: rgba(255,255,255,0.015);
}

.footer-socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

.footer-socials svg {
  width: 19px;
  height: 19px;
  fill: currentColor;
}

.whatsapp-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 50;
  background: var(--accent);
  color: #101010;
  padding: 13px 16px;
  border-radius: 999px;
  font-family: Arial, sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  transition: 0.25s ease;
}

.whatsapp-float:hover {
  transform: translateY(-3px);
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .menu-toggle {
    display: grid;
    justify-self: end;
  }

  .language-switcher {
    grid-column: 3;
  }

  .main-nav {
    grid-column: 1 / -1;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 0 8px;
    border-top: 1px solid var(--border);
  }

  .main-nav.open {
    display: flex;
  }

  .menu-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

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

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

  .hero-visual {
    min-height: 420px;
  }

  .book-mockup {
    transform: rotate(2deg);
  }

  .dark-panel {
    padding: 36px;
  }
}

@media (max-width: 620px) {
  .site-header {
    width: min(var(--max-width), calc(100% - 28px));
    gap: 18px;
  }

  .brand {
    grid-template-columns: 48px auto;
  }

  .brand-logo-wrap {
    width: 48px;
    height: 48px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    max-width: 42px;
    max-height: 42px;
  }

  .brand-text {
    font-size: 0.82rem;
  }

  .language-switcher {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .main-nav {
    gap: 14px;
    font-size: 0.72rem;
  }

  h1 {
    font-size: 3.1rem;
  }

  .section {
    padding: 72px 0;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }

  .footer-socials {
    justify-content: flex-start;
  }
  .contact-form select {
  background-color: #11151a;
  color: var(--text);
}

.contact-form select option {
  background-color: #11151a;
  color: var(--text);
}
.contact-form select,
.contact-form select option,
.contact-form select optgroup {
  background: #11151a !important;
  color: #f5f1e8 !important;
  }
}