/* ============================================
   EMBER SCOTT — Author Website
   Dark, atmospheric thriller aesthetic
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Type Scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 8rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transition */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Erode', 'Georgia', serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
}

/* --- Dark Theme (Default — Thriller Aesthetic) --- */
:root,
[data-theme='dark'] {
  --color-bg: #0a0a0c;
  --color-surface: #111115;
  --color-surface-2: #18181e;
  --color-surface-offset: #0e0e12;
  --color-surface-dynamic: #1f1f28;
  --color-divider: #222230;
  --color-border: #2a2a38;

  --color-text: #e8e6e1;
  --color-text-muted: #8a8880;
  --color-text-faint: #555550;
  --color-text-inverse: #0a0a0c;

  --color-primary: #c8362e;
  --color-primary-hover: #e04038;
  --color-primary-active: #a02820;
  --color-primary-highlight: #2a1515;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);
}

/* --- Light Theme --- */
[data-theme='light'] {
  --color-bg: #f5f3ee;
  --color-surface: #faf9f6;
  --color-surface-2: #ffffff;
  --color-surface-offset: #eeece6;
  --color-surface-dynamic: #e5e3dd;
  --color-divider: #d5d3cc;
  --color-border: #c5c3bb;

  --color-text: #1a1815;
  --color-text-muted: #6b6860;
  --color-text-faint: #a5a29a;
  --color-text-inverse: #f5f3ee;

  --color-primary: #b02e28;
  --color-primary-hover: #c83830;
  --color-primary-active: #8a2018;
  --color-primary-highlight: #f5e0de;

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 40 / 0.08);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 40 / 0.1);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 40 / 0.15);
}

/* ============================================
   HEADER / NAV
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: box-shadow 0.3s var(--ease-out);
}
.site-header--scrolled {
  box-shadow: var(--shadow-md);
}
.header-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-4) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}
.logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.nav-desktop {
  display: none;
}
@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--space-6);
  }
}
.nav-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  position: relative;
  padding: var(--space-1) 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-primary);
  transition: width 0.3s var(--ease-out);
}
.nav-link:hover {
  color: var(--color-text);
}
.nav-link:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: oklch(from var(--color-text) l c h / 0.08);
}

/* Mobile nav */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.hamburger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: currentColor;
  transition: all 0.3s var(--ease-out);
}
.hamburger:hover {
  color: var(--color-text);
}
@media (min-width: 768px) {
  .hamburger {
    display: none;
  }
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: oklch(from var(--color-bg) l c h / 0.97);
  backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}
.mobile-nav.open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-nav .nav-link {
  font-size: var(--text-xl);
  font-family: var(--font-display);
  text-transform: none;
  letter-spacing: 0.02em;
}
.mobile-nav-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.5rem;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: var(--space-12) var(--space-4);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, oklch(0.25 0.08 20 / 0.3), transparent),
    radial-gradient(ellipse 40% 60% at 70% 60%, oklch(0.15 0.06 0 / 0.2), transparent);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, oklch(from var(--color-bg) l c h / 0.3) 0%, var(--color-bg) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}
.hero-tagline {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-6);
  line-height: 1.05;
}
.hero-title em {
  font-style: italic;
  color: var(--color-primary);
}
.hero-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  line-height: 1.7;
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}
.hero-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px oklch(from var(--color-primary) l c h / 0.3);
}
.hero-cta:active {
  transform: translateY(0);
}

/* ============================================
   SECTIONS — Common
   ============================================ */
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-4);
}
.section-alt {
  background: var(--color-surface);
}
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
}
.container--narrow {
  max-width: var(--content-default);
}
.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}
.section-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-3);
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: -0.01em;
}
.section-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
  margin-top: var(--space-4);
}
.divider-line {
  width: 48px;
  height: 2px;
  background: var(--color-primary);
  margin: var(--space-4) auto 0;
  border-radius: var(--radius-full);
}

/* ============================================
   BOOKS
   ============================================ */
.books-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-8);
  }
}
.book-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--color-text);
  group: book;
}
.book-cover-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 2/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}
.book-card:hover .book-cover-wrap {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 16px 40px oklch(0 0 0 / 0.5), 0 0 30px oklch(from var(--color-primary) l c h / 0.15);
}
.book-card:active .book-cover-wrap {
  transform: translateY(-2px) scale(1.01);
}
.book-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-out);
}
.book-card:hover .book-cover {
  transform: scale(1.04);
}
.book-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, oklch(0 0 0 / 0.7) 100%);
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: var(--space-4);
}
.book-card:hover .book-overlay {
  opacity: 1;
}
.book-overlay span {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.book-info {
  text-align: center;
  margin-top: var(--space-4);
}
.book-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
}
.book-meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}
.book-series-tag {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  font-weight: 600;
  margin-top: var(--space-2);
}

/* Preorder badge */
.book-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 2;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 8px oklch(0 0 0 / 0.3);
}

/* Series divider within books section */
.series-block {
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}
.series-block:last-child {
  margin-bottom: 0;
}
.series-heading {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.06);
}
.series-heading span {
  color: var(--color-primary);
}

/* ============================================
   BLOG
   ============================================ */
.blog-grid {
  display: grid;
  gap: var(--space-6);
}
@media (min-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}
@media (min-width: 1024px) {
  .blog-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}
.blog-card {
  background: var(--color-surface-2);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}
.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: oklch(from var(--color-primary) l c h / 0.2);
}
.blog-card-image {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--color-surface-dynamic);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  overflow: hidden;
}
.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.blog-card-body {
  padding: var(--space-5);
}
.blog-date {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.blog-card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-top: var(--space-2);
  margin-bottom: var(--space-3);
}
.blog-excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: var(--space-4);
  transition: gap var(--transition-interactive);
}
.blog-read-more:hover {
  gap: var(--space-2);
}

/* ============================================
   Q&A
   ============================================ */
.qna-list {
  max-width: 740px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.qna-item {
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  transition: border-color 0.3s var(--ease-out);
}
.qna-item.active {
  border-color: oklch(from var(--color-primary) l c h / 0.25);
}
.qna-question {
  width: 100%;
  text-align: left;
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  cursor: pointer;
}
.qna-question:hover {
  color: var(--color-primary);
}
.qna-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform 0.3s var(--ease-out), color 0.3s var(--ease-out);
}
.qna-item.active .qna-icon {
  transform: rotate(45deg);
  color: var(--color-primary);
}
.qna-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out);
}
.qna-answer-inner {
  padding: 0 var(--space-6) var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}
@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-12);
  }
}
.about-image-wrap {
  position: relative;
  max-width: 380px;
  margin-inline: auto;
}
.about-image {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  object-fit: cover;
  background: var(--color-surface-2);
}
.about-image-accent {
  position: absolute;
  inset: -8px;
  border: 1px solid oklch(from var(--color-primary) l c h / 0.15);
  border-radius: calc(var(--radius-lg) + 8px);
  z-index: -1;
}
.about-content h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  margin-bottom: var(--space-4);
}
.about-content p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.about-content p:last-of-type {
  margin-bottom: var(--space-6);
}
.about-socials {
  display: flex;
  gap: var(--space-3);
}
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1px solid oklch(from var(--color-text) l c h / 0.1);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: all var(--transition-interactive);
}
.social-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: oklch(from var(--color-primary) l c h / 0.08);
}

/* ============================================
   NEWSLETTER
   ============================================ */
.newsletter {
  text-align: center;
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-4);
  background: var(--color-surface);
  border-top: 1px solid oklch(from var(--color-text) l c h / 0.05);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.05);
}
.newsletter-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  margin-bottom: var(--space-3);
}
.newsletter-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 440px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}
.newsletter-form {
  display: flex;
  gap: var(--space-3);
  max-width: 520px;
  margin-inline: auto;
  flex-wrap: wrap;
  justify-content: center;
}
.newsletter-input {
  flex: 1;
  min-width: 200px;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid oklch(from var(--color-text) l c h / 0.1);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition-interactive);
}
.newsletter-input::placeholder {
  color: var(--color-text-faint);
}
.newsletter-input:focus {
  outline: none;
  border-color: var(--color-primary);
}
.newsletter-btn {
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}
.newsletter-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}
.newsletter-btn:active {
  transform: translateY(0);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  padding: var(--space-12) var(--space-4) var(--space-8);
  border-top: 1px solid oklch(from var(--color-text) l c h / 0.05);
}
.footer-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}
@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}
@media (min-width: 768px) {
  .footer-brand {
    align-items: flex-start;
  }
}
.footer-brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: 0.03em;
}
.footer-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.footer-links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}
.footer-link {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--transition-interactive);
}
.footer-link:hover {
  color: var(--color-primary);
}
.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-4);
  text-align: center;
  width: 100%;
}

/* ============================================
   CHATBOT
   ============================================ */
.chatbot-toggle {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 150;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px oklch(from var(--color-primary) l c h / 0.4);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), background var(--transition-interactive);
}
.chatbot-toggle:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px oklch(from var(--color-primary) l c h / 0.5);
}
.chatbot-toggle:active {
  transform: scale(1);
}

.chatbot-panel {
  position: fixed;
  bottom: calc(var(--space-6) + 68px);
  right: var(--space-6);
  z-index: 150;
  width: min(400px, calc(100vw - 2rem));
  height: min(520px, calc(100dvh - 140px));
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.chatbot-panel.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.chatbot-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-surface-2);
}
.chatbot-header-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.chatbot-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
}
.chatbot-header-text h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.3;
}
.chatbot-header-text span {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}
.chatbot-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
}
.chatbot-close:hover {
  background: oklch(from var(--color-text) l c h / 0.08);
  color: var(--color-text);
}

.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.chatbot-message {
  display: flex;
  gap: var(--space-2);
  max-width: 85%;
}
.chatbot-message--bot {
  align-self: flex-start;
}
.chatbot-message--user {
  align-self: flex-end;
  flex-direction: row-reverse;
}
.chatbot-msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 600;
}
.chatbot-message--bot .chatbot-msg-avatar {
  background: var(--color-primary);
  color: #fff;
}
.chatbot-message--user .chatbot-msg-avatar {
  background: oklch(from var(--color-text) l c h / 0.1);
  color: var(--color-text-muted);
}
.chatbot-msg-bubble {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  line-height: 1.6;
}
.chatbot-message--bot .chatbot-msg-bubble {
  background: var(--color-surface-2);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  color: var(--color-text);
}
.chatbot-message--user .chatbot-msg-bubble {
  background: var(--color-primary);
  color: #fff;
}

.chatbot-input-area {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid oklch(from var(--color-text) l c h / 0.06);
  display: flex;
  gap: var(--space-2);
  background: var(--color-surface-2);
}
.chatbot-input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  resize: none;
}
.chatbot-input::placeholder {
  color: var(--color-text-faint);
}
.chatbot-input:focus {
  outline: none;
  border-color: var(--color-primary);
}
.chatbot-send {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}
.chatbot-send:hover {
  background: var(--color-primary-hover);
}
.chatbot-send:disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: var(--space-3) var(--space-4);
}
.typing-indicator span {
  width: 6px;
  height: 6px;
  background: var(--color-text-muted);
  border-radius: var(--radius-full);
  animation: typing 1.2s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-4px); }
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 1;
}
@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 100%;
  }
}
@keyframes reveal-fade {
  to { opacity: 1; }
}

/* JS fallback for browsers without scroll-driven animations */
.js-reveal {
  opacity: 0;
  transition: opacity 0.6s var(--ease-out);
}
.js-reveal.visible {
  opacity: 1;
}

/* ============================================
   QUICK SUGGESTIONS (Chatbot)
   ============================================ */
.chatbot-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: 0 var(--space-4) var(--space-3);
}
.chatbot-suggestion {
  padding: var(--space-1) var(--space-3);
  font-size: 0.75rem;
  border: 1px solid oklch(from var(--color-text) l c h / 0.1);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: transparent;
  transition: all var(--transition-interactive);
  white-space: nowrap;
}
.chatbot-suggestion:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: oklch(from var(--color-primary) l c h / 0.06);
}

/* ============================================
   NAV SIGNUP BUTTON
   ============================================ */
.nav-signup {
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition-interactive), transform var(--transition-interactive);
  white-space: nowrap;
}
.nav-signup:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}
.nav-signup:active {
  transform: translateY(0);
}
.mobile-nav .nav-signup {
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-6);
  margin-top: var(--space-4);
}

/* ============================================
   EMAIL POPUP
   ============================================ */
.email-popup-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: oklch(0 0 0 / 0.6);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}
.email-popup-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.email-popup {
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  max-width: 420px;
  width: 100%;
  padding: var(--space-8) var(--space-6);
  text-align: center;
  position: relative;
  transform: translateY(16px) scale(0.96);
  transition: transform 0.3s var(--ease-out);
}
.email-popup-overlay.open .email-popup {
  transform: translateY(0) scale(1);
}
.email-popup-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  font-size: 1.25rem;
  transition: all var(--transition-interactive);
}
.email-popup-close:hover {
  background: oklch(from var(--color-text) l c h / 0.08);
  color: var(--color-text);
}
.email-popup-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-4);
  background: oklch(from var(--color-primary) l c h / 0.12);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}
.email-popup h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  margin-bottom: var(--space-2);
}
.email-popup p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  max-width: 100%;
}
.email-popup-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.email-popup-input {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border: 1px solid oklch(from var(--color-text) l c h / 0.1);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: center;
  transition: border-color var(--transition-interactive);
}
.email-popup-input::placeholder {
  color: var(--color-text-faint);
}
.email-popup-input:focus {
  outline: none;
  border-color: var(--color-primary);
}
.email-popup-btn {
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}
.email-popup-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}
.email-popup-btn:active {
  transform: translateY(0);
}
.email-popup-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
}

/* ============================================
   CONTACT FORM
   ============================================ */

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  max-width: 680px;
  margin: 0 auto;
}

.contact-honeypot {
  display: none;
}

.contact-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

@media (max-width: 600px) {
  .contact-row {
    grid-template-columns: 1fr;
  }
}

.contact-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.contact-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.captcha-question {
  color: var(--color-primary);
  font-weight: 700;
  text-transform: none;
  letter-spacing: 0;
}

.contact-input {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 4px;
  padding: var(--space-3) var(--space-4);
  width: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
  box-sizing: border-box;
}

[data-theme="light"] .contact-input {
  border-color: rgba(0,0,0,0.2);
}

.contact-input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

.contact-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(200, 54, 46, 0.15);
}

.contact-textarea {
  resize: vertical;
  min-height: 130px;
  line-height: 1.6;
}

.contact-captcha-row {
  display: flex;
  align-items: flex-end;
  gap: var(--space-4);
}

.contact-captcha-field {
  flex: 1;
}

.contact-submit {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  border-radius: 4px;
  padding: var(--space-4) var(--space-8);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  align-self: flex-start;
}

.contact-submit:hover {
  background: #a82a23;
  transform: translateY(-1px);
}

.contact-submit:active {
  transform: translateY(0);
}

.contact-success {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  min-height: 1.5em;
}