/* ============================================================
   Stephen Antcliff — Author Website
   Design System & Styles
   ============================================================ */

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

/* ---- CUSTOM PROPERTIES ---- */
:root {
  /* Palette */
  --color-bg-dark:       #1a1c23;
  --color-bg-dark-alt:   #22252e;
  --color-bg-warm:       #f5f0e8;
  --color-bg-card:       #faf7f2;
  --color-accent-gold:   #c9a84c;
  --color-accent-gold-dim:#a88a30;
  --color-accent-red:    #8b3a3a;
  --color-accent-red-bright:#c0392b;
  --color-text-dark:     #2c2c2c;
  --color-text-light:    #e8e4dc;
  --color-text-muted:    #8a8580;
  --color-border:        #d4cfc8;
  --color-border-dark:   #3a3d45;
  --color-overlay:       rgba(26,28,35,0.85);
  --color-glow-gold:     rgba(201,168,76,0.12);

  /* Typography */
  --font-heading:  'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body:     'Lora', Georgia, 'Times New Roman', serif;
  --font-mono:     'JetBrains Mono', 'Courier New', monospace;
  --font-dossier:  'Space Grotesk', sans-serif;

  /* Spacing */
  --section-py: clamp(4rem, 10vh, 8rem);
  --section-px: clamp(1.5rem, 5vw, 3rem);
  --max-width: 1200px;

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-smooth:   cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-bounce:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 300ms;
  --duration-med:  600ms;
  --duration-slow: 900ms;

  /* Shadows */
  --shadow-card:      0 4px 24px rgba(0,0,0,0.10);
  --shadow-card-hover:0 12px 48px rgba(0,0,0,0.18);
  --shadow-glow:      0 0 30px var(--color-glow-gold);

  /* Z-indices */
  --z-canvas:   0;
  --z-content:  1;
  --z-overlay:  5;
  --z-nav:      100;
  --z-toast:    200;
  --z-loader:   300;
}

/* ---- BASE ---- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-text-dark);
  background: var(--color-bg-warm);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }

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

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

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--section-py) var(--section-px);
}

/* ---- ANIMATIONS ---- */
@keyframes decrypt-reveal {
  0%   { opacity: 0; filter: blur(8px); letter-spacing: 0.5em; }
  50%  { opacity: 0.5; filter: blur(2px); }
  100% { opacity: 1; filter: blur(0); letter-spacing: normal; }
}

@keyframes fade-in-up {
  0%   { opacity: 0; transform: translateY(40px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  0%   { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes signal-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.3); }
  50%      { opacity: 1; transform: scaleY(1); }
}

@keyframes scroll-hint {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50%      { transform: translateY(10px); opacity: 1; }
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0; }
}

@keyframes stamp-reveal {
  0%   { opacity: 0; transform: scale(1.4) rotate(-12deg); }
  60%  { opacity: 1; transform: scale(0.95) rotate(-12deg); }
  100% { opacity: 0.7; transform: scale(1) rotate(-12deg); }
}

@keyframes glitch {
  0%, 90%, 100% { transform: translate(0); }
  92% { transform: translate(-2px, 1px); }
  94% { transform: translate(2px, -1px); }
  96% { transform: translate(-1px, 1px); }
}

@keyframes toast-in {
  0%   { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ---- SCROLL REVEAL ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out-expo),
              transform 0.7s var(--ease-out-expo);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal="left"]  { transform: translateX(-40px); }
[data-reveal="right"] { transform: translateX(40px); }
[data-reveal="left"].revealed,
[data-reveal="right"].revealed { transform: translateX(0); }

[data-reveal="fade"] { transform: none; }

/* Stagger children */
.books-grid > [data-reveal]:nth-child(1) { transition-delay: 0ms; }
.books-grid > [data-reveal]:nth-child(2) { transition-delay: 80ms; }
.books-grid > [data-reveal]:nth-child(3) { transition-delay: 160ms; }
.books-grid > [data-reveal]:nth-child(4) { transition-delay: 240ms; }
.books-grid > [data-reveal]:nth-child(5) { transition-delay: 320ms; }

/* ---- PERFORMANCE ---- */
section#books,
section#audio,
section#contact {
  content-visibility: auto;
  contain-intrinsic-size: 800px;
}

/* ============================================================
   NAVIGATION
   ============================================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem var(--section-px);
  transition: background var(--duration-med) ease,
              box-shadow var(--duration-med) ease,
              padding var(--duration-med) ease;
  font-family: var(--font-dossier);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 500;
}

.navbar.scrolled {
  background: rgba(26,28,35,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
  padding: 0.8rem var(--section-px);
}

.nav-logo {
  color: var(--color-accent-gold);
  font-weight: 700;
  font-size: 1rem;
  z-index: calc(var(--z-nav) + 1);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-light);
  transition: color var(--duration-fast) ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent-gold);
  transition: width var(--duration-fast) var(--ease-smooth);
}

.nav-links a:hover,
.nav-links a.active { color: var(--color-accent-gold); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: calc(var(--z-nav) + 1);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-light);
  transition: transform var(--duration-fast) ease,
              opacity var(--duration-fast) ease;
}

.nav-open .nav-toggle span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    background: rgba(26,28,35,0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-med) ease;
    font-size: 1.2rem;
  }

  .nav-open .nav-links {
    opacity: 1;
    pointer-events: auto;
  }
}

/* ============================================================
   HERO SECTION
   ============================================================ */

#hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-dark);
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  z-index: var(--z-canvas);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: var(--z-overlay);
  background:
    radial-gradient(ellipse at 50% 40%, rgba(26,28,35,0.3) 20%, var(--color-bg-dark) 70%),
    linear-gradient(to bottom, rgba(26,28,35,0.6) 0%, var(--color-bg-dark) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 6;
  text-align: center;
  color: var(--color-text-light);
  padding: 2rem;
}

.dossier-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  margin-bottom: 1.5rem;
}

.dossier-tag span {
  opacity: 0.5;
  margin: 0 0.6em;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
  position: relative;
}

.hero-title .cursor {
  display: inline-block;
  width: 3px;
  height: 0.85em;
  background: var(--color-accent-gold);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: cursor-blink 0.8s steps(1) infinite;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-style: italic;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.hero-banner {
  width: clamp(280px, 55vw, 620px);
  height: auto;
  margin: 0 auto 2rem;
  display: block;
}

.hero-decoration {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.hero-decoration .line {
  width: 60px;
  height: 1px;
  background: var(--color-border-dark);
}

.hero-decoration .symbol {
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-accent-gold);
  border-radius: 50%;
  position: relative;
}

.hero-decoration .symbol::after {
  content: '';
  position: absolute;
  inset: 5px;
  border: 1px solid var(--color-accent-gold);
  border-radius: 50%;
  opacity: 0.5;
}

/* Classified stamp */
.classified-stamp {
  position: absolute;
  top: 15%;
  right: 8%;
  font-family: var(--font-dossier);
  font-size: 1.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: rgba(139,58,58,0.12);
  border: 3px solid rgba(139,58,58,0.12);
  padding: 0.6rem 1.2rem;
  transform: rotate(-12deg);
  pointer-events: none;
  z-index: var(--z-content);
  animation: stamp-reveal 1.5s var(--ease-out-expo) 0.8s both;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-content);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-chevron {
  width: 20px;
  height: 20px;
  border-right: 1px solid var(--color-accent-gold);
  border-bottom: 1px solid var(--color-accent-gold);
  transform: rotate(45deg);
  animation: scroll-hint 2s ease-in-out infinite;
}

@media (max-width: 768px) {
  .classified-stamp {
    top: 10%;
    right: 5%;
    font-size: 1.2rem;
    padding: 0.4rem 0.8rem;
  }
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */

#about {
  background: var(--color-bg-warm);
  color: var(--color-text-dark);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: center;
}

.about-image-wrapper {
  position: relative;
}

.about-image-wrapper img {
  width: 100%;
  border-radius: 4px;
  box-shadow: var(--shadow-card);
}

.about-image-wrapper::after {
  content: '';
  position: absolute;
  inset: -8px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  z-index: -1;
  transform: translate(8px, 8px);
}

.about-dossier-note {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent-red);
  margin-bottom: 1rem;
}

.about-text h2 {
  margin-bottom: 1.5rem;
  color: var(--color-bg-dark);
}

.about-text p {
  margin-bottom: 1.2rem;
  color: var(--color-text-dark);
}

.about-signature {
  margin-top: 2rem;
  font-family: var(--font-body);
  font-style: italic;
  font-size: 1.3rem;
  color: var(--color-accent-gold-dim);
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-image-wrapper {
    max-width: 350px;
    margin: 0 auto;
  }
}

/* ============================================================
   BOOKS SECTION
   ============================================================ */

#books {
  background: linear-gradient(180deg, var(--color-bg-warm) 0%, #ede6d8 100%);
  color: var(--color-text-dark);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  margin-bottom: 0.5rem;
}

.section-header p {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.section-header .dossier-tag {
  margin-bottom: 0.5rem;
}

/* Books Grid */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--section-px);
}

@media (min-width: 1000px) {
  .books-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .books-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
    margin: 0 auto;
  }
}

/* Book Card */
.book-card {
  perspective: 1200px;
  height: 460px;
}

.book-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.7s var(--ease-out-expo);
}

.book-card.flipped .book-card-inner {
  transform: rotateY(180deg);
}

.book-card-front,
.book-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: 6px;
  overflow: hidden;
}

/* Card Front */
.book-card-front {
  background: var(--color-bg-dark);
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--duration-med) var(--ease-smooth);
  display: flex;
  flex-direction: column;
}

.book-card.tilting .book-card-front {
  box-shadow: var(--shadow-card-hover);
}

.book-cover {
  flex: 1;
  overflow: hidden;
  background: var(--color-bg-dark-alt);
}

.book-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-smooth);
}

.book-card.tilting .book-cover img {
  transform: scale(1.03);
}

/* Placeholder cover for Book 5 */
.placeholder-cover {
  width: 100%;
  height: 100%;
  background: var(--color-bg-dark-alt);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.placeholder-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255,255,255,0.02) 2px,
      rgba(255,255,255,0.02) 4px
    );
}

.placeholder-stamp {
  position: absolute;
  top: 12%;
  font-family: var(--font-dossier);
  font-size: 1.4rem;
  font-weight: 700;
  text-transform: uppercase;
  color: rgba(139,58,58,0.15);
  border: 2px solid rgba(139,58,58,0.15);
  padding: 0.4rem 0.8rem;
  transform: rotate(-15deg);
}

.placeholder-icon {
  width: 56px;
  height: 56px;
  border: 2px solid var(--color-accent-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  opacity: 0.6;
}

.placeholder-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-accent-gold);
}

.placeholder-redacted {
  width: 70%;
  height: 10px;
  background: var(--color-bg-dark);
  margin-bottom: 0.6rem;
  border-radius: 2px;
}

.placeholder-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-light);
  margin-top: 1rem;
  text-align: center;
  letter-spacing: 0.05em;
}

.placeholder-subtitle {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-style: italic;
  color: var(--color-accent-gold);
  margin-top: 0.3rem;
}

.placeholder-coming {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  margin-top: 1rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid rgba(201,168,76,0.3);
  border-radius: 2px;
}

/* Status Badge */
.book-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  border-radius: 2px;
  z-index: 2;
}

.book-badge.available {
  background: #22c55e;
  color: #fff;
}

.book-badge.coming {
  background: #4c9cf1;
  color: #fff;
}

/* Flip hint */
.flip-hint {
  position: absolute;
  bottom: 3.5rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(232,228,220,0.5);
  z-index: 2;
  opacity: 0;
  transition: opacity var(--duration-fast) ease;
}

.book-card-front:hover .flip-hint {
  opacity: 1;
}

/* Card Back */
.book-card-back {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  transform: rotateY(180deg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  overflow-y: auto;
}

.book-card-back > div {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.book-card-back h4 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.book-card-back .back-series {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent-gold);
  margin-bottom: 1rem;
}

.book-card-back .synopsis {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.book-meta {
  display: flex;
  gap: 0.5rem;
  margin: 0.5rem 0 0.2rem;
  flex-wrap: wrap;
}

.book-format-badge {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--color-border-dark);
  border-radius: 2px;
  color: var(--color-text-muted);
  background: transparent;
  cursor: pointer;
  transition: all var(--duration-fast) ease;
}

.book-format-badge.active {
  background: rgba(201,168,76,0.15);
  border-color: rgba(201,168,76,0.4);
  color: var(--color-accent-gold);
}

.book-format-badge:hover {
  border-color: rgba(201,168,76,0.5);
}

.book-format-badge.active.selected {
  background: var(--color-accent-gold);
  border-color: var(--color-accent-gold);
  color: var(--color-bg-dark);
}

/* Filtered-out buy links */
.buy-link[data-format].hidden {
  display: none;
}

/* Buy Links */
.buy-links {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  align-content: flex-start;
  margin-top: 0.3rem;
  min-height: 72px;
}

.buy-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--color-border-dark);
  border-radius: 3px;
  font-family: var(--font-dossier);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--duration-fast) ease;
}

.buy-link:hover {
  border-color: var(--color-accent-gold);
  color: var(--color-accent-gold);
}

.buy-link svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.buy-link[data-placeholder] {
  opacity: 0.4;
  cursor: not-allowed;
  border-style: dashed;
}

.back-close-hint {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(232,228,220,0.3);
  text-align: center;
  margin-top: auto;
  padding-top: 1rem;
}

/* Books CTA */
.books-cta {
  text-align: center;
  margin-top: 4rem;
  font-family: var(--font-body);
  font-style: italic;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ============================================================
   AUDIO SECTION
   ============================================================ */

#audio {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  position: relative;
  overflow: hidden;
}

.audio-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse at 50% 0%, var(--color-glow-gold) 0%, transparent 60%);
}

#audio .section-inner {
  position: relative;
  z-index: 1;
}

#audio .section-header h2 {
  color: var(--color-text-light);
}

#audio .section-header .dossier-tag {
  color: var(--color-accent-gold);
}

/* Audio Visualizer */
.audio-visualizer {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 6px;
  height: 80px;
  margin-bottom: 3rem;
}

.audio-visualizer .bar {
  width: 4px;
  background: var(--color-accent-gold);
  border-radius: 2px;
  animation: signal-pulse 1.2s ease-in-out infinite;
}

.audio-visualizer .bar:nth-child(1) { animation-delay: 0s; }
.audio-visualizer .bar:nth-child(2) { animation-delay: 0.12s; }
.audio-visualizer .bar:nth-child(3) { animation-delay: 0.24s; }
.audio-visualizer .bar:nth-child(4) { animation-delay: 0.36s; }
.audio-visualizer .bar:nth-child(5) { animation-delay: 0.48s; }
.audio-visualizer .bar:nth-child(6) { animation-delay: 0.60s; }
.audio-visualizer .bar:nth-child(7) { animation-delay: 0.72s; }

/* Audio Grid */
.audio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto 3rem;
}

.audio-card {
  background: var(--color-bg-dark-alt);
  border: 1px solid var(--color-border-dark);
  border-radius: 6px;
  padding: 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: border-color var(--duration-fast) ease;
}

.audio-card:hover {
  border-color: rgba(201,168,76,0.3);
}

.audio-card--featured {
  position: relative;
  overflow: hidden;
}

.audio-card-thumb {
  width: 80px;
  height: auto;
  border-radius: 3px;
  flex-shrink: 0;
  margin-left: auto;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

@media (max-width: 480px) {
  .audio-card--featured {
    flex-wrap: wrap;
  }
  .audio-card-thumb {
    width: 60px;
    margin-left: 0;
    margin-top: 0.5rem;
  }
}

.audio-card-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(201,168,76,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.audio-card-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-accent-gold);
}

/* Play Button */
.audio-play-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
  border: none;
  transition: background var(--duration-fast) ease,
              transform var(--duration-fast) var(--ease-bounce);
}

.audio-play-btn:hover {
  background: var(--color-accent-gold-dim);
  transform: scale(1.08);
}

.audio-play-btn svg {
  width: 18px;
  height: 18px;
  color: var(--color-bg-dark);
  position: absolute;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.audio-play-btn .pause-icon {
  opacity: 0;
  transform: scale(0.6);
}

.audio-play-btn.playing .play-icon {
  opacity: 0;
  transform: scale(0.6);
}

.audio-play-btn.playing .pause-icon {
  opacity: 1;
  transform: scale(1);
}

.audio-card-info h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.audio-card-info .narrator {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.8rem;
}

.audio-card-info .audio-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.audio-link {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-fast) ease;
}

.audio-link:hover {
  border-color: var(--color-accent-gold);
}

.audio-link[data-placeholder] {
  color: var(--color-text-muted);
  cursor: not-allowed;
}


/* ============================================================
   CONTACT / NEWSLETTER SECTION
   ============================================================ */

#contact {
  background: var(--color-bg-warm);
  color: var(--color-text-dark);
}

.contact-grid {
  display: grid;
  grid-template-columns: 15fr 13fr 2fr;
  gap: 2rem;
  align-items: start;
}

.newsletter h2 {
  margin-bottom: 0.5rem;
}

.newsletter p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.newsletter-form {
  display: flex;
  gap: 0.5rem;
}

.newsletter-form input {
  flex: 1;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  background: #fff;
  color: var(--color-text-dark);
  transition: border-color var(--duration-fast) ease;
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--color-accent-gold);
}

.newsletter-form button {
  padding: 0.8rem 1.5rem;
  background: var(--color-accent-gold);
  color: #fff;
  border: none;
  border-radius: 3px;
  font-family: var(--font-dossier);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--duration-fast) ease;
  white-space: nowrap;
}

.newsletter-form button:hover {
  background: var(--color-accent-gold-dim);
}

.form-message {
  margin-top: 0.8rem;
  font-size: 0.8rem;
  min-height: 1.2em;
}

.form-message.success { color: #2d8a4b; }
.form-message.error   { color: var(--color-accent-red-bright); }

/* Social Links */
.social-links {
  text-align: left;
}

.social-links h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.social-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.8rem;
  padding-left: 0;
  margin: 0;
}

.social-links a {
  font-family: var(--font-dossier);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--color-bg-dark);
  transition: color var(--duration-fast) ease;
}

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

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .social-links {
    text-align: left;
  }

  .newsletter-form {
    flex-direction: column;
  }
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  text-align: center;
  padding: 2rem var(--section-px);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
}

.back-to-top {
  display: inline-block;
  margin-top: 0.8rem;
  color: var(--color-accent-gold-dim);
  cursor: pointer;
  transition: color var(--duration-fast) ease;
}

.back-to-top:hover {
  color: var(--color-accent-gold);
}

/* ============================================================
   TOAST
   ============================================================ */

.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  pointer-events: none;
}

.toast {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: 0.8rem 1.5rem;
  border-radius: 4px;
  font-family: var(--font-dossier);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  border: 1px solid var(--color-border-dark);
  animation: toast-in 0.4s var(--ease-out-expo);
  text-align: center;
}

.toast.toast-out {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* ============================================================
   RESPONSIVE — Tablet & Mobile
   ============================================================ */

/* ---- Tablet: 768px and below ---- */
@media (max-width: 768px) {
  :root {
    --section-py: clamp(3rem, 8vh, 5rem);
  }

  /* Nav */
  .navbar {
    padding: 1rem var(--section-px);
  }
  .nav-links {
    font-size: 1.1rem;
    gap: 2rem;
  }

  /* Hero */
  #hero {
    min-height: 500px;
  }
  .hero-title {
    font-size: clamp(2rem, 8vw, 3.5rem);
  }
  .hero-tagline {
    font-size: 0.95rem;
  }
  .hero-banner {
    width: 85vw;
  }
  .classified-stamp {
    font-size: 1rem;
    top: 8%;
    right: 4%;
    padding: 0.3rem 0.6rem;
  }
  .hero-decoration .line {
    width: 40px;
  }

  /* About */
  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .about-image-wrapper {
    max-width: 350px;
    margin: 0 auto;
  }
  .about-text h2 {
    font-size: 1.8rem;
  }

  /* Books */
  #books {
    contain-intrinsic-size: 1600px;
  }
  .books-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
  }
  .book-card {
    height: 420px;
    max-width: 260px;
    margin: 0 auto;
  }
  .section-header h2 {
    font-size: 1.8rem;
  }

  /* Audio */
  .audio-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto 2rem;
  }
  .audio-visualizer {
    height: 50px;
    gap: 4px;
    margin-bottom: 2rem;
  }
  .audio-card--featured {
    flex-wrap: wrap;
  }
  .audio-card-thumb {
    width: 64px;
    margin-left: 0;
  }

  /* Contact */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .contact-spacer {
    display: none;
  }
  .social-links {
    text-align: left;
  }
  .newsletter-form {
    flex-direction: column;
  }
  .newsletter h2 {
    font-size: 1.8rem;
  }

  /* Scroll reveal — reduce motion distance */
  [data-reveal] { transform: translateY(20px); }
  [data-reveal="left"]  { transform: translateX(-20px); }
  [data-reveal="right"] { transform: translateX(20px); }
}

/* ---- Mobile: 480px and below ---- */
@media (max-width: 480px) {
  :root {
    --section-px: 1rem;
    --section-py: 2.5rem;
  }

  /* Hero */
  #hero {
    min-height: 430px;
  }
  .hero-title {
    font-size: 1.8rem;
    letter-spacing: 0.02em;
  }
  .hero-tagline {
    font-size: 0.85rem;
  }
  .hero-banner {
    width: 90vw;
    margin-bottom: 1.2rem;
  }
  .dossier-tag {
    font-size: 0.6rem;
    letter-spacing: 0.15em;
  }
  .dossier-tag span {
    display: none;
  }
  .classified-stamp {
    font-size: 0.75rem;
    top: 5%;
    right: 3%;
    padding: 0.2rem 0.5rem;
    border-width: 2px;
  }
  .hero-decoration {
    gap: 0.8rem;
    margin-bottom: 1.5rem;
  }
  .hero-decoration .line {
    width: 30px;
  }
  .hero-decoration .symbol {
    width: 22px;
    height: 22px;
  }
  .scroll-indicator {
    bottom: 1.2rem;
    font-size: 0.55rem;
  }

  /* Nav */
  .nav-logo {
    font-size: 0.85rem;
  }

  /* About */
  .about-image-wrapper {
    max-width: 260px;
  }
  .about-text h2 {
    font-size: 1.5rem;
  }
  .about-text p {
    font-size: 0.95rem;
  }
  .about-signature {
    font-size: 1.1rem;
  }

  /* Books */
  .books-grid {
    grid-template-columns: 1fr;
    max-width: 280px;
    margin: 0 auto;
    gap: 1.5rem;
  }
  .book-card {
    height: 440px;
    max-width: 260px;
    margin: 0 auto;
  }
  .section-header {
    margin-bottom: 2.5rem;
  }
  .section-header h2 {
    font-size: 1.5rem;
  }
  .books-cta {
    font-size: 0.85rem;
    margin-top: 2.5rem;
  }

  /* Audio */
  .audio-visualizer {
    height: 40px;
    gap: 3px;
  }
  .audio-visualizer .bar {
    width: 3px;
  }
  .audio-card {
    padding: 1rem;
  }
  .audio-card-thumb {
    width: 52px;
  }

  /* Contact */
  .newsletter h2 {
    font-size: 1.5rem;
  }
  .newsletter p {
    font-size: 0.9rem;
  }
  .social-links a {
    font-size: 0.8rem;
  }
  .site-footer {
    font-size: 0.6rem;
  }

  /* Book card back — smaller padding */
  .book-card-back {
    padding: 1.2rem;
  }
  .book-card-back h4 {
    font-size: 0.95rem;
  }
  .book-card-back .synopsis {
    font-size: 0.8rem;
  }
  .buy-link {
    padding: 0.35rem 0.5rem;
    font-size: 0.58rem;
  }
}

/* ============================================================
   UTILITY
   ============================================================ */

/* Only show on devices that support hover */
@media (hover: none) {
  .book-card { perspective: none; }
  .flip-hint { display: none; }
}