/* =============================================
   BUDAFÉ — Landing Page
   CSS Stylesheet — v2
   ============================================= */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=DM+Mono:wght@300;400&family=Syne:wght@400;600;700;800&display=swap');

/* --- CSS Variables — Paleta BUDAFÉ --- */
:root {
  --bg:          #080c10;
  --bg-surface:  #0d1117;
  --bg-card:     #111820;
  --accent:      #55afe3;        /* Azul */
  --accent-warm: #c38d39;        /* Amarelo torrado */
  --accent-dim:  #2d6a94;
  --text-1:      #f2f4f6;
  --text-2:      #8a96a3;
  --text-3:      #3a4550;
  --border:      rgba(85, 175, 227, 0.18);
  --border-soft: rgba(242, 244, 246, 0.07);
  --border-warm: rgba(195, 141, 57, 0.22);

  --font-display: 'Cormorant Garamond', serif;
  --font-ui:      'Syne', sans-serif;
  --font-mono:    'DM Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 28px;

  --transition:      0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --page-max: 1200px;
  --side-pad: clamp(1.2rem, 5vw, 4rem);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background-color: var(--bg);
  color: var(--text-1);
  font-family: var(--font-ui);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: var(--bg); }

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

/* --- Grain overlay --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.028;
  pointer-events: none;
  z-index: 9999;
}

/* ==============================================
   SCROLL REVEAL
   ============================================== */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ==============================================
   HEADER
   ============================================== */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem var(--side-pad);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), backdrop-filter var(--transition);
}

#header.scrolled {
  background: rgba(8, 12, 16, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-soft);
}

.logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Logo real (versão branca sobre fundo escuro) */
.logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
  transition: opacity var(--transition-fast);
}
.logo-img:hover { opacity: 0.78; }

/* ==============================================
   HERO
   ============================================== */
#hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem var(--side-pad) 4rem;
  position: relative;
  overflow: hidden;
}

/* Azul glow */
#hero::after {
  content: '';
  position: absolute;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(85,175,227,0.07) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: pulseGlow 7s ease-in-out infinite;
  z-index: 0;
}

/* Amarelo glow secundário */
#hero::before {
  content: '';
  position: absolute;
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(195,141,57,0.06) 0%, transparent 70%);
  bottom: 8%; right: 8%;
  pointer-events: none;
  z-index: 0;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50%       { opacity: 1;   transform: translate(-50%, -50%) scale(1.12); }
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--accent-warm);
  text-transform: uppercase;
  margin-bottom: 1.8rem;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 7rem);
  font-weight: 300;
  line-height: 1.05;
  color: var(--text-1);
  position: relative;
  z-index: 1;
  max-width: 900px;
}
.hero-title em { font-style: italic; color: var(--accent); }

.hero-subtitle {
  margin-top: 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-style: italic;
  color: var(--text-2);
  max-width: 520px;
  position: relative;
  z-index: 1;
}

.hero-divider {
  width: 60px; height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  margin: 2.5rem auto;
  position: relative; z-index: 1;
  transform-origin: left;
  animation: expandLine 1s cubic-bezier(0.22, 1, 0.36, 1) 0.6s both;
}
@keyframes expandLine {
  from { transform: scaleX(0); opacity: 0; }
  to   { transform: scaleX(1); opacity: 1; }
}

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast),
              background var(--transition-fast);
}
.btn-primary:hover {
  background: #78c4eb;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(85,175,227,0.35);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  background: transparent;
  color: var(--text-1);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-warm);
  cursor: pointer;
  transition: border-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast);
}
.btn-ghost:hover {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
  transform: translateY(-2px);
}

.scroll-hint {
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  opacity: 0.35;
  position: relative;
  z-index: 1;
  animation: floatHint 2.5s ease-in-out infinite;
}
@keyframes floatHint {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}
.scroll-hint span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.scroll-hint svg { width: 16px; height: 16px; }

/* ==============================================
   SECTION COMMON
   ============================================== */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.90rem;
  letter-spacing: 0.25em;
  color: var(--accent-warm);
  text-transform: uppercase;
  margin-bottom: 1rem;
  text-align: center;
  margin: 0 auto;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--text-1);
  margin-bottom: 1rem;
}
.section-title em { font-style: italic; color: var(--accent); }
.section-desc {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--text-2);
  max-width: 500px;
  text-align: center;
  margin: 0 auto; 
}

/* ==============================================
   E-BOOK READER — SISTEMA DE PAGINAÇÃO CORRIGIDO
   ============================================== */
#ebook {
  padding: 7rem var(--side-pad);
  position: relative;
}

.ebook-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.reader-shell {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
}

.reader-frame {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 40px 100px rgba(0,0,0,0.65),
              0 0 0 1px rgba(85,175,227,0.04);
}

/* Book Viewport */
.book-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 3/2;
  overflow: hidden;
  background: #080c10;
  cursor: grab;
  /* Impede selecção de texto durante swipe */
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
}
.book-viewport:active { cursor: grabbing; }

/* Fullscreen */
.reader-frame.fullscreen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  border-radius: 0;
  border: none;
  max-width: 100%;
  display: flex;
  flex-direction: column;
}
.reader-frame.fullscreen .book-viewport {
  flex: 1;
  aspect-ratio: unset;
  height: 100%;
}

/* ────────────────────────────────────────────
   PÁGINAS — SISTEMA INLINE-ONLY
   Toda a lógica de posição/transição é feita
   EXCLUSIVAMENTE via inline styles no JS.
   O CSS apenas define o contentor e o aspecto
   visual de cada página. Sem conflito possível.
   ──────────────────────────────────────────── */
.book-pages {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.book-page {
  position: absolute;
  inset: 0;
  /* Posição inicial gerida 100% por JS via inline style.
     O CSS não define transform nem opacity aqui. */
  pointer-events: none;
  will-change: transform, opacity;
}

/* Page inner */
.page-inner {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: #090d14;
  position: relative;
  overflow-y: auto;
}
.page-inner::-webkit-scrollbar { width: 3px; }
.page-inner::-webkit-scrollbar-track { background: transparent; }
.page-inner::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

/* Cover */
.page-cover {
  background: linear-gradient(155deg, #080c10 0%, #0d1624 60%, #050a0f 100%);
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1.2rem;
}
.page-cover .cover-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--accent-dim);
  text-transform: uppercase;
}
.page-cover .cover-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  font-weight: 300;
  line-height: 1.1;
  color: var(--text-1);
}
.page-cover .cover-title em { font-style: italic; color: var(--accent); }
.page-cover .cover-subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  color: var(--text-2);
}
.page-cover .cover-ornament {
  width: 48px; height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  margin: 0 auto;
}

/* Content pages */
.page-content .page-number {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-3);
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.page-content .page-number::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-soft);
}
.page-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-1);
  margin-bottom: 1rem;
}
.page-content h2 em { font-style: italic; color: var(--accent); }
.page-content p {
  font-family: var(--font-display);
  font-size: clamp(0.9rem, 1.8vw, 1.05rem);
  line-height: 1.75;
  color: var(--text-2);
  margin-bottom: 0.9rem;
}
.page-content blockquote {
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
  margin: 1.2rem 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--accent);
}

/* Reader Controls */
.reader-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border-soft);
  gap: 1rem;
}
.reader-nav { display: flex; align-items: center; gap: 0.6rem; }

.reader-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
  background: transparent;
  color: var(--text-1);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color var(--transition-fast),
              color var(--transition-fast),
              background var(--transition-fast);
}
.reader-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(85,175,227,0.06);
}
.reader-btn:disabled { opacity: 0.25; cursor: not-allowed; }
.reader-btn svg { width: 16px; height: 16px; pointer-events: none; }

.page-indicator {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.reader-progress {
  flex: 1;
  height: 2px;
  background: var(--border-soft);
  border-radius: 99px;
  overflow: hidden;
}
.reader-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  border-radius: 99px;
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.fullscreen-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}
.fullscreen-btn:hover { border-color: var(--accent-warm); color: var(--accent-warm); }
.fullscreen-btn svg { width: 15px; height: 15px; pointer-events: none; }

.fullscreen-close {
  display: none;
  position: fixed;
  top: 1rem; right: 1.2rem;
  z-index: 1001;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(8,12,16,0.85);
  color: var(--text-1);
  cursor: pointer;
  backdrop-filter: blur(10px);
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast);
}
.fullscreen-close.visible { display: flex; }
.fullscreen-close:hover { border-color: var(--accent); color: var(--accent); }

.swipe-hint {
  position: absolute;
  bottom: 3.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  pointer-events: none;
  animation: fadeHint 3s ease-in-out 2.5s forwards;
  z-index: 5;
}
@keyframes fadeHint {
  0%   { opacity: 1; }
  100% { opacity: 0; }
}

/* ==============================================
   MERCH SECTION
   ============================================== */
#merch {
  padding: 7rem var(--side-pad);
  position: relative;
  overflow: hidden;
}
#merch::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--border-soft);
}

.merch-layout { max-width: var(--page-max); margin: 0 auto; }
.merch-header { margin-bottom: 3rem; }

.carousel-outer {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: 2.5rem;
}
.carousel-track-wrap { overflow: hidden; border-radius: var(--radius-md); }
.carousel-track {
  display: flex;
  gap: 1rem;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
}

.carousel-slide {
  flex: 0 0 calc(33.333% - 0.67rem);
 aspect-ratio: 9/16;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
}
@media (max-width: 768px) {
  .carousel-slide { flex: 0 0 calc(85% - 0.5rem); }
}

.carousel-slide img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--transition);
}
.carousel-slide:hover img { transform: scale(1.04); }

.slide-placeholder {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, var(--bg-card) 0%, #0e1726 100%);
}
.slide-placeholder svg { width: 32px; height: 32px; color: var(--text-3); }
.slide-placeholder span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.carousel-nav {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.4rem;
}
.carousel-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-1);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: border-color var(--transition-fast),
              color var(--transition-fast),
              background var(--transition-fast);
}
.carousel-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(85,175,227,0.06);
}
.carousel-btn svg { width: 16px; height: 16px; pointer-events: none; }

.carousel-dots {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  margin-left: auto;
}
.carousel-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-3);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
  border: none;
}
.carousel-dot.active { background: var(--accent); transform: scale(1.4); }

/* CTA */
.merch-cta-area {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.2rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.merch-cta-area::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-warm));
}
.merch-cta-text {
  font-family: var(--font-display);
  font-size: 1rem;
  font-style: italic;
  color: var(--text-2);
  max-width: 480px;
}
@media (min-width: 600px) {
  .merch-cta-area {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ==============================================
   FOOTER
   ============================================== */
#footer {
  padding: 3rem var(--side-pad);
  text-align: center;
  border-top: 1px solid var(--border-soft);
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--text-3);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.footer-credit {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-3);
  letter-spacing: 0.12em;
}
.footer-credit a {
  color: var(--accent-dim);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-credit a:hover { color: var(--accent); }

/* ==============================================
   RESPONSIVE
   ============================================== */
@media (max-width: 768px) {
  :root { --side-pad: 1.2rem; }
  .hero-title { font-size: clamp(2.5rem, 12vw, 5rem); }
  .book-viewport { aspect-ratio: 2/3; }
  .reader-controls { padding: 0.7rem 0.8rem; gap: 0.5rem; }
  .page-indicator { display: none; }
}

@media (max-width: 420px) {
  .hero-cta-row { flex-direction: column; width: 100%; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  .book-viewport { aspect-ratio: 9/16; }
}

@media (min-width: 1400px) {
  .book-viewport { aspect-ratio: 16/9; }
}

/* Logo título no Hero */
.hero-title-logo {
  width: min(520px, 85vw);
  height: auto;
  display: block;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.merch-cta-area .section-label,
.merch-cta-area .merch-cta-text {
  text-align: left;
}