/* ========================================
   TRAVELZER PHOTOBOOK - MAIN STYLESHEET
   ======================================== */

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #1a1a1a;
  --color-secondary: #8b7a6b;
  --color-accent: #d4a574;
  --color-light: #f5f4f1;
  --color-white: #ffffff;
  --color-border: #e8e6e1;
  --color-text: #2a2a2a;
  --color-text-light: #666666;
  --color-gradient-warm-start: #8b5e52;
  --color-gradient-warm-end: #d4a574;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Typography */
  --font-family-serif: 'Georgia', 'Garamond', serif;
  --font-family-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3.5rem;

  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
}

h1 {
  font-size: var(--font-size-4xl);
  font-family: var(--font-family-serif);
  font-weight: 400;
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-3xl);
  font-family: var(--font-family-serif);
  font-weight: 400;
}

h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-md);
}

strong {
  font-weight: 600;
  color: var(--color-text);
}

/* Links */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary);
}

/* ========================================
   PAGE LAYOUT
   ======================================== */

.page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  align-items: center;
  padding: var(--spacing-3xl) var(--spacing-lg);
  min-height: 100vh;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero__content {
  position: relative;
  z-index: 10;
  color: var(--color-light);
  max-width: 600px;
  margin: auto;
  text-align: center;
}

.hero__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: rgba(212, 165, 116, 0.15);
  margin-bottom: var(--spacing-2xl);
  border: 2px solid rgba(212, 165, 116, 0.3);
}

.hero__logo-text {
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}

.hero__title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  color: floralwhite;
  letter-spacing: -0.03em;
}

.hero__subtitle {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: 300;
  color: rgba(245, 244, 241, 0.8);
  font-family: var(--font-family-serif);
  font-style: italic;
  margin-top: var(--spacing-md);
  letter-spacing: 0.02em;
}

.hero__description {
  font-size: var(--font-size-lg);
  color: rgba(245, 244, 241, 0.9);
  margin-bottom: var(--spacing-2xl);
  font-weight: 300;
}

.hero__cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__image-wrapper {
  position: relative;
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: box-shadow 0.35s ease;
}

.hero__image-wrapper:hover {
  box-shadow: var(--shadow-lg), 0 0 32px 8px rgba(212, 165, 116, 0.5);
}

.hero__image {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: 30% 30%;
  background-color: rgba(212, 165, 116, 0.2);
}

/* ========================================
   BUTTONS
   ======================================== */

.button {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-2xl);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  text-decoration: none;
  letter-spacing: 0.025em;
}

.button--primary {
  background-color: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.button--primary:hover {
  background-color: #e8b98a;
  border-color: #e8b98a;
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 165, 116, 0.55);
}

.button--secondary {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.button--secondary:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.button--large {
  padding: var(--spacing-lg) var(--spacing-3xl);
  font-size: var(--font-size-lg);
}

/* ========================================
   BOOK DETAILS SECTION
   ======================================== */

.book-details {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background-color: var(--color-white);
}

.book-details__container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.book-details__specs {
  order: 1;
}

.book-details__description {
  order: 2;
}

.book-details__title {
  margin-bottom: var(--spacing-2xl);
  color: var(--color-primary);
}

.book-details__text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

/* Specs Grid */
.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.spec-card {
  display: block;
  position: relative;
  padding: 0;
  border: none;
  border-radius: 1rem;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  background-image: url('../assets/card-icons.png');
  background-size: 200% 200%;
  background-repeat: no-repeat;
  background-position: 0 0;
  aspect-ratio: 1 / 1;
}

.spec-card:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.spec-card__icon {
  display: none;
}

.spec-card__content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  background: rgba(26, 26, 26, 0.82);
  opacity: 0;
  transition: opacity var(--transition-normal);
  padding: var(--spacing-md);
  text-align: center;
}

.spec-card:hover .spec-card__content {
  opacity: 1;
}

.spec-card__label {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #ffffff;
  margin: 0;
}

.spec-card__value {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-lg);
  color: #ffffff;
  margin: 0;
  flex-shrink: 0;
}

.spec-card--format {
  background-position: 0 0;
}

.spec-card--pages {
  background-position: 100% 0;
}

.spec-card--photos {
  background-position: 0 100%;
}

.spec-card--locations {
  background-position: 100% 100%;
}

/* Highlights */
.highlights {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.highlight-item {
  padding-left: var(--spacing-lg);
  border-left: 4px solid var(--color-accent);
}

.highlight-item__title {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.highlight-item__text {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

/* CTA Section */
.cta-section {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-2xl);
  border-top: 2px solid var(--color-border);
  text-align: center;
}

.cta-section__text {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

/* ========================================
   TIMELINE SECTION
   ======================================== */

.timeline {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background-color: rgba(245, 244, 241, 0.5);
}

.timeline__title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  color: var(--color-primary);
}

.timeline__content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 90px;
  position: relative;
}

.timeline-item {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  position: relative;
}

.timeline-item__date {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: floralwhite;
  margin-bottom: var(--spacing-sm);
}

.timeline-item__event {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.timeline-item__description {
  color: floralwhite;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

.timeline-item--active {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 2px solid var(--color-accent);
}

.timeline-item--active .timeline-item__event {
  color: var(--color-accent);
}

/* Timeline Connectors - CSS Sprites
   Sprite: 621x325px. Tower content: col 59-203. Elephant: col 266-581.
   At background-size 170x89px: tower=16-55px, elephant=73-159px (no bleed). */
.timeline-item:first-child::after,
.timeline-item--active::after {
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  
  height: 89px;
  background-image: url('../assets/icons-separator.png');
  background-size: 170px 89px;
  background-repeat: no-repeat;
  z-index: 1;
}

.timeline-item:first-child::after {
  left: calc(90% + 10px);
  width: 73px;
  background-position: 0 0;
}

.timeline-item--active::after {
  left: calc(100% + 15px);
  width: 95px;
  background-position: -68px 0;
  pointer-events: none;
}

/* ========================================
   INITIAL REACTIONS SECTION
   ======================================== */

.reactions {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background-color: var(--color-light);
}

.reactions__inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.reactions__inner::before {
  content: '';
  display: block;
  width: 89px;
  height: 89px;
  background-image: url('../assets/icons-marble.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  margin: 0 auto var(--spacing-lg);
}

.reactions__eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.reactions__line {
  flex: 1;
  max-width: 80px;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(212, 165, 116, 0.5));
}

.reactions__eyebrow .reactions__line:last-child {
  background: linear-gradient(to left, transparent, rgba(212, 165, 116, 0.5));
}

.reactions__label {
  font-size: var(--font-size-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
}

.reactions__title {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-3xl);
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 0.01em;
}

.reactions__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
}

.reaction-card {
  margin: 0;
  padding: var(--spacing-2xl) var(--spacing-xl);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--color-accent);
  text-align: left;
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
}

.reaction-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background-color: var(--color-white);
}

.reaction-card::before {
  content: '\201C';
  font-family: var(--font-family-serif);
  font-size: 4rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.4;
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-lg);
}

.reaction-card__text {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  font-style: italic;
  margin: 0;
  padding-top: var(--spacing-xl);
}

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

.about-travelzer {
  padding: var(--spacing-3xl) var(--spacing-lg);
  background-color: var(--color-primary);
  position: relative;
  overflow: hidden;
}

.about-travelzer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 60% 50%, rgba(139, 94, 82, 0.18) 0%, transparent 70%),
              radial-gradient(ellipse at 20% 80%, rgba(212, 165, 116, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.about-travelzer__inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.about-travelzer__inner::before {
  content: '';
  display: block;
  width: 89px;
  height: 89px;
  background-image: url('../assets/icons-lotus_temple.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  margin: 0 auto var(--spacing-lg);
}

.about-travelzer__eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.about-travelzer__line {
  flex: 1;
  max-width: 80px;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(212, 165, 116, 0.5));
}

.about-travelzer__eyebrow .about-travelzer__line:last-child {
  background: linear-gradient(to left, transparent, rgba(212, 165, 116, 0.5));
}

.about-travelzer__label {
  font-size: var(--font-size-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
}

.about-travelzer__title {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-3xl);
  font-weight: 400;
  color: floralwhite;
  margin-bottom: var(--spacing-2xl);
  letter-spacing: -0.01em;
}

.about-travelzer__body {
  text-align: left;
}

.about-travelzer__body p {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: rgba(245, 244, 241, 0.78);
  margin-bottom: var(--spacing-lg);
}

.about-travelzer__body p:last-child {
  margin-bottom: 0;
}

.about-travelzer__body strong {
  color: var(--color-accent);
  font-weight: 600;
}

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

.footer {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  margin-top: auto;
}

.footer__content {
  max-width: 800px;
  margin: 0 auto;
}

.footer__text {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.01em;
  color: rgba(245, 244, 241, 0.9);
}

.footer__meta {
  font-size: var(--font-size-sm);
  color: rgba(245, 244, 241, 0.7);
}

.footer__separator {
  margin: 0 var(--spacing-md);
  opacity: 0.5;
}

.footer__social {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(245, 244, 241, 0.1);
  color: var(--color-accent);
  transition: var(--transition-normal);
  text-decoration: none;
  border: 1px solid transparent;
}

.social-link:hover {
  background-color: rgba(245, 244, 241, 0.2);
  color: var(--color-white);
  transform: translateY(-2px);
}

.social-link__icon {
  width: 20px;
  height: 20px;
  display: block;
  filter: brightness(0) saturate(100%) invert(100%) sepia(100%) saturate(200%) hue-rotate(18deg);
}