/* ===========================
   TOKENS
   =========================== */
:root {
  --parchment: #f6eedf;
  --cream: #faf6ed;
  --sand: #e2d3b8;
  --ink: #1c1208;
  --terracotta: #b5491e;
  --rust: #7a2e0d;
  --ash: #88776a;
  --gold: #c49a2c;
  --white: #ffffff;

  --text-xs:    clamp(0.7rem,  0.65rem + 0.2vw, 0.8rem);
  --text-sm:    clamp(0.85rem, 0.8rem  + 0.2vw, 0.95rem);
  --text-base:  clamp(1rem,    0.92rem + 0.4vw, 1.15rem);
  --text-lg:    clamp(1.2rem,  1.1rem  + 0.5vw, 1.5rem);
  --text-xl:    clamp(1.5rem,  1.2rem  + 1.5vw, 2.5rem);
  --text-2xl:   clamp(2rem,    1.5rem  + 2.5vw, 4rem);
  --text-hero:  clamp(3rem,    2rem    + 5vw,   7rem);

  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   2rem;
  --space-lg:   4rem;
  --space-xl:   8rem;
  --space-2xl:  clamp(6rem, 3rem + 8vw, 14rem);

  --duration-fast:   150ms;
  --duration-normal: 350ms;
  --ease-out-expo:   cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--parchment);
  overflow-x: hidden;
}

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

/* ===========================
   TYPOGRAPHY
   =========================== */
h1, h2, h3, h4 {
  font-family: 'Playfair Display', Georgia, serif;
  line-height: 1.15;
  font-weight: 900;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--text-hero); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

.kicker {
  font-family: 'Source Serif 4', serif;
  font-size: var(--text-xs);
  font-weight: 300;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ash);
}

/* ===========================
   LAYOUT UTILITIES
   =========================== */
.container {
  width: min(100%, 74rem);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 5vw, 4rem);
}

.container--narrow {
  width: min(100%, 54rem);
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 5vw, 4rem);
}

/* ===========================
   HERO
   =========================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  background-color: var(--ink);
  overflow: hidden;
}

.hero__bg-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Playfair Display', serif;
  font-size: clamp(8rem, 22vw, 26rem);
  font-weight: 900;
  color: rgba(255,255,255,0.03);
  user-select: none;
  pointer-events: none;
  letter-spacing: -0.05em;
  white-space: nowrap;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding-block: var(--space-xl);
  padding-inline: var(--space-md);
}

.hero__kicker {
  color: var(--gold);
  margin-bottom: var(--space-sm);
  opacity: 0;
  transform: translateY(1rem);
}

.hero__title {
  color: var(--cream);
  max-width: 14ch;
  margin-inline: auto;
  margin-bottom: var(--space-sm);
  opacity: 0;
  transform: translateY(1.5rem);
}

.hero__hook {
  font-size: var(--text-lg);
  color: var(--sand);
  font-style: italic;
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(1rem);
}

.hero__meta {
  font-size: var(--text-sm);
  color: var(--ash);
  letter-spacing: 0.12em;
  opacity: 0;
}

.hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--ash);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0;
}

.hero__scroll-line {
  width: 1px;
  height: 3rem;
  background: linear-gradient(to bottom, var(--ash), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(1); transform-origin: bottom; opacity: 0; }
}

/* ===========================
   ROUTE MAP
   =========================== */
.route {
  background-color: var(--ink);
  padding-block: var(--space-xl);
  overflow: hidden;
}

.route__heading {
  color: var(--cream);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.route__heading .kicker {
  color: var(--gold);
  margin-bottom: var(--space-xs);
}

.route__map-wrap {
  width: 100%;
  overflow: visible;
}

.route-svg {
  width: 100%;
  height: auto;
  max-width: 1200px;
  margin-inline: auto;
  display: block;
}

.route-path {
  fill: none;
  stroke: var(--terracotta);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.route-path--dashed {
  stroke-dasharray: 6 6;
  stroke: var(--ash);
}

.route-dot {
  fill: var(--terracotta);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out-expo);
}

.route-dot--gold { fill: var(--gold); }

.route-label {
  fill: var(--cream);
  font-family: 'Source Serif 4', serif;
  font-size: 12px;
  opacity: 0;
}

.route-label--date {
  fill: var(--ash);
  font-size: 10px;
}

.route-ocean-label {
  fill: rgba(255,255,255,0.15);
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 15px;
  letter-spacing: 0.1em;
}

/* ===========================
   SECTION BASE
   =========================== */
.chapter {
  padding-block: var(--space-2xl);
}

.chapter--dark {
  background-color: var(--ink);
  color: var(--cream);
}

.chapter--sand {
  background-color: var(--sand);
}

.chapter__header {
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(2rem);
}

.chapter__number {
  font-family: 'Playfair Display', serif;
  font-size: clamp(5rem, 10vw, 10rem);
  font-weight: 900;
  line-height: 1;
  color: var(--terracotta);
  opacity: 0.2;
  margin-bottom: -1rem;
}

.chapter__title { margin-bottom: var(--space-xs); }

.chapter__subtitle {
  font-size: var(--text-lg);
  font-weight: 300;
  font-style: italic;
  color: var(--ash);
}

.chapter--dark .chapter__subtitle { color: var(--sand); }

.chapter__countries {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.country-tag {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3em 0.8em;
  border: 1px solid var(--terracotta);
  color: var(--terracotta);
  border-radius: 2px;
}

/* ===========================
   EMAIL DISPATCH
   =========================== */
.dispatch {
  margin-block: var(--space-lg);
  opacity: 0;
  transform: translateY(2rem);
}

.dispatch__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--sand);
}

.chapter--dark .dispatch__header { border-bottom-color: rgba(255,255,255,0.1); }

.dispatch__subject {
  font-family: 'Playfair Display', serif;
  font-size: var(--text-lg);
  font-style: italic;
}

.dispatch__date {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--ash);
  white-space: nowrap;
}

.dispatch__body {
  font-size: var(--text-base);
  line-height: 1.85;
  font-style: italic;
  color: var(--ink);
  padding: var(--space-md);
  background: var(--cream);
  border-left: 3px solid var(--terracotta);
}

.chapter--dark .dispatch__body {
  background: rgba(255,255,255,0.05);
  color: var(--sand);
  border-left-color: var(--gold);
}

.dispatch__body p { margin-bottom: 1em; }
.dispatch__body p:last-child { margin-bottom: 0; }

.dispatch__signature {
  font-family: 'Playfair Display', serif;
  font-size: var(--text-sm);
  font-style: italic;
  margin-top: var(--space-sm);
  color: var(--ash);
}

/* ===========================
   PULL QUOTE
   =========================== */
.pull-quote {
  margin-block: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  border-top: 3px solid var(--terracotta);
  border-bottom: 1px solid var(--sand);
  opacity: 0;
  transform: translateY(1.5rem);
}

.chapter--dark .pull-quote {
  border-top-color: var(--gold);
  border-bottom-color: rgba(255,255,255,0.1);
}

.pull-quote__text {
  font-family: 'Playfair Display', serif;
  font-size: var(--text-xl);
  font-style: italic;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: var(--space-xs);
}

.chapter--dark .pull-quote__text { color: var(--cream); }

.pull-quote__source {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ash);
}

/* ===========================
   NARRATIVE TEXT
   =========================== */
.narrative {
  font-size: var(--text-base);
  line-height: 1.85;
  margin-bottom: var(--space-md);
  color: var(--ink);
  opacity: 0;
  transform: translateY(1.5rem);
}

.chapter--dark .narrative { color: var(--sand); }
.narrative strong { color: var(--terracotta); font-weight: 400; }
.chapter--dark .narrative strong { color: var(--gold); }

/* ===========================
   FINAL EMAIL SECTION
   =========================== */
.final-email {
  background-color: var(--ink);
  padding-block: var(--space-2xl);
}

.final-email__inner {
  max-width: 680px;
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 5vw, 4rem);
}

.final-email__label {
  color: var(--gold);
  margin-bottom: var(--space-md);
  text-align: center;
}

.final-email__subject {
  font-family: 'Playfair Display', serif;
  font-size: var(--text-2xl);
  color: var(--cream);
  text-align: center;
  margin-bottom: 0.25rem;
  opacity: 0;
  transform: translateY(1.5rem);
}

.final-email__datestamp {
  text-align: center;
  color: var(--ash);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
  opacity: 0;
}

.final-email__body {
  font-size: var(--text-base);
  font-style: italic;
  line-height: 1.9;
  color: var(--sand);
  opacity: 0;
  transform: translateY(1.5rem);
}

.final-email__body p { margin-bottom: 1.25em; }

.final-email__route {
  margin-block: var(--space-md);
  padding: var(--space-md);
  background: rgba(255,255,255,0.04);
  border-left: 2px solid var(--gold);
  font-size: var(--text-base);
  color: var(--cream);
  font-style: normal;
  letter-spacing: 0.02em;
}

.final-email__replies {
  margin-top: var(--space-xl);
  opacity: 0;
}

.reply {
  padding: var(--space-md) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.reply__from {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.reply__text {
  font-style: italic;
  color: var(--sand);
  font-size: var(--text-sm);
  line-height: 1.8;
}

/* ===========================
   NUMBERS SECTION
   =========================== */
.numbers {
  background-color: var(--terracotta);
  padding-block: var(--space-2xl);
  color: var(--cream);
}

.numbers__heading {
  color: var(--cream);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.numbers__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 2px;
  background-color: rgba(0,0,0,0.15);
}

.stat {
  background-color: var(--terracotta);
  padding: var(--space-md);
  opacity: 0;
  transform: translateY(1.5rem);
}

.stat__number {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 900;
  line-height: 1;
  color: var(--cream);
  display: block;
  margin-bottom: 0.5rem;
}

.stat__label {
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
}

/* ===========================
   FOOTER
   =========================== */
.site-footer {
  background-color: var(--ink);
  padding-block: var(--space-lg);
  text-align: center;
}

.site-footer p {
  font-size: var(--text-xs);
  color: var(--ash);
  letter-spacing: 0.1em;
}

/* ===========================
   DIVIDER
   =========================== */
.chapter-divider {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-block: var(--space-lg);
  opacity: 0.3;
}

.chapter-divider::before,
.chapter-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: currentColor;
}

.chapter-divider span {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ===========================
   REDUCED MOTION
   =========================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hero__scroll-line { animation: none; }
}