/* ==========================================================================
   Angelika Biernat — Ebook landing page
   ========================================================================== */

:root {
  /* Palette */
  --color-bg: #fbf8f4;
  --color-surface: #ffffff;
  --color-muted: #f3ece3;
  --color-text: #2b2622;
  --color-text-soft: #6b6259;
  --color-accent: #b8794f;
  --color-accent-dark: #96603b;
  --color-accent-soft: #efe3d6;
  --color-border: #e7ddd0;

  /* Type */
  --font-heading: "Playfair Display", Georgia, serif;
  --font-body: "Jost", "Segoe UI", sans-serif;

  /* Layout */
  --container-width: 1120px;
  --radius: 14px;
  --transition: 0.3s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.5rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

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

.container-narrow {
  max-width: 760px;
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 0.9em;
}

.eyebrow.center,
h2.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section {
  padding: 100px 0;
}

.section-muted {
  background: var(--color-muted);
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 8px 20px -8px rgba(184, 121, 79, 0.6);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -8px rgba(184, 121, 79, 0.65);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

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

.btn-large {
  padding: 18px 44px;
  font-size: 1.05rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 248, 244, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 4px 20px -12px rgba(43, 38, 34, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.logo span {
  color: var(--color-accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--color-text-soft);
  position: relative;
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--color-text);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 9px 20px;
  border-radius: 999px;
  transition: background var(--transition), transform var(--transition);
}

.nav-cta::after { display: none; }

.nav-cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  padding: 90px 0 100px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--color-text-soft);
  max-width: 46ch;
}

.hero em {
  color: var(--color-accent);
  font-style: italic;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 32px 0 20px;
}

.hero-note {
  font-size: 0.85rem;
  color: var(--color-text-soft);
}

.hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

/* ---------- Book cover placeholder (pure CSS) ---------- */
.book-cover {
  width: 280px;
  height: 400px;
  border-radius: 6px 10px 10px 6px;
  background: linear-gradient(155deg, var(--color-accent) 0%, #d4a374 45%, var(--color-accent-dark) 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 32px 28px;
  box-shadow:
    -6px 0 0 rgba(0,0,0,0.08) inset,
    0 30px 50px -20px rgba(150, 96, 59, 0.55);
  position: relative;
  transform: rotate(-3deg);
  transition: transform var(--transition);
}

.hero-visual:hover .book-cover {
  transform: rotate(0deg) translateY(-4px);
}

.book-cover::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 3px;
  pointer-events: none;
}

.book-cover-eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.85;
}

.book-cover-title {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1.15;
}

.book-cover-sub {
  font-size: 0.85rem;
  font-style: italic;
  opacity: 0.9;
}

.book-cover--small {
  width: 220px;
  height: 310px;
  transform: rotate(-2deg);
  margin: 0 auto;
}

.book-shadow {
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  height: 30px;
  background: radial-gradient(ellipse at center, rgba(43,38,34,0.25) 0%, transparent 70%);
  filter: blur(4px);
}

/* ---------- Split sections ---------- */
.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.split-reverse {
  grid-template-columns: 1.1fr 0.9fr;
}

.split-reverse .split-visual {
  order: 2;
}

.split-reverse .split-text {
  order: 1;
}

.split-visual {
  display: flex;
  justify-content: center;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--color-text-soft);
}

.feature-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

/* ---------- Avatar placeholder ---------- */
.avatar {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: linear-gradient(155deg, var(--color-accent-soft), var(--color-accent));
  color: #fff;
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 30px 50px -24px rgba(150, 96, 59, 0.5);
  border: 6px solid var(--color-surface);
}

.signature {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--color-accent-dark);
  margin-top: 24px;
}

/* ---------- Pricing ---------- */
.pricing-card {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 56px 48px;
  box-shadow: 0 30px 60px -30px rgba(43, 38, 34, 0.18);
}

.price {
  margin: 12px 0 4px;
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent-dark);
}

.price-old {
  font-size: 1.2rem;
  color: var(--color-text-soft);
  text-decoration: line-through;
  margin-left: 12px;
}

.price-note {
  color: var(--color-text-soft);
  font-size: 0.9rem;
}

.price-note.small {
  margin-top: 18px;
  font-size: 0.8rem;
}

.pricing-list {
  list-style: none;
  padding: 0;
  margin: 28px 0 32px;
  display: inline-flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  color: var(--color-text-soft);
}

/* ---------- Testimonials ---------- */
.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 40px -24px rgba(43, 38, 34, 0.22);
}

.stars {
  color: var(--color-accent);
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.testimonial-text {
  color: var(--color-text-soft);
  font-style: italic;
}

.testimonial-author {
  font-weight: 500;
  margin: 0;
}

/* ---------- FAQ ---------- */
.faq-list {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 500;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--color-accent);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin: 14px 0 0;
  color: var(--color-text-soft);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #2b2622;
  color: #efe8df;
  padding: 64px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
  color: #fff;
  margin-bottom: 8px;
}

.footer-tagline {
  color: #b3a89a;
  font-style: italic;
}

.footer-inner h3 {
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #b3a89a;
  margin-bottom: 14px;
}

.footer-contact a {
  color: #efe8df;
  transition: color var(--transition);
}

.footer-contact a:hover {
  color: var(--color-accent);
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.social-links a {
  color: #efe8df;
  transition: color var(--transition);
}

.social-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.8rem;
  color: #8a7f70;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px) {
  .hero-inner,
  .split,
  .split-reverse {
    grid-template-columns: 1fr;
  }

  .split-reverse .split-visual,
  .split-reverse .split-text {
    order: initial;
  }

  .hero-visual {
    order: -1;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 78px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .main-nav.is-open {
    max-height: 420px;
  }

  .main-nav .nav-link,
  .main-nav .nav-cta {
    width: 100%;
    padding: 16px 24px;
    border-radius: 0;
  }

  .main-nav .nav-cta {
    margin: 8px 24px 16px;
    width: calc(100% - 48px);
    text-align: center;
  }

  .nav-toggle {
    display: flex;
  }

  .section {
    padding: 72px 0;
  }

  .pricing-card {
    padding: 40px 24px;
  }
}

@media (max-width: 480px) {
  .book-cover {
    width: 220px;
    height: 320px;
    padding: 24px 20px;
  }

  .book-cover-title {
    font-size: 1.7rem;
  }

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

  .btn {
    text-align: center;
  }
}