:root {
  --c-parchment: #f5f0e8;
  --c-ink: #1c1917;
  --c-ink-muted: #57534e;
  --c-ink-faint: #a8a29e;
  --c-seal: #7c3aed;
  --c-seal-light: #ede9fe;
  --c-gold: #d97706;
  --c-gold-light: #fef3c7;
  --c-border: rgba(28, 25, 23, 0.12);
  --font-serif: "Playfair Display", Georgia, serif;
  --font-sans: "Inter", system-ui, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, monospace;
  --s1: 4px;
  --s2: 8px;
  --s3: 12px;
  --s4: 16px;
  --s5: 24px;
  --s6: 32px;
  --s7: 48px;
  --s8: 64px;
  --s9: 96px;
  --r-sm: 2px;
  --r-md: 6px;
  --r-lg: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --c-parchment: #0c0a09;
    --c-ink: #f5f0e8;
    --c-ink-muted: #a8a29e;
    --c-border: rgba(245, 240, 232, 0.1);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--c-ink);
  background:
    radial-gradient(circle at 10% 8%, rgba(217, 119, 6, 0.09), transparent 26rem),
    radial-gradient(circle at 84% 12%, rgba(124, 58, 237, 0.08), transparent 30rem),
    linear-gradient(135deg, var(--c-parchment), #e9f4f2 48%, var(--c-parchment));
  font-family: var(--font-sans);
}

body::before {
  pointer-events: none;
  content: "";
  position: fixed;
  inset: 0;
  z-index: 30;
  opacity: 0.035;
  background-image:
    linear-gradient(rgba(28, 25, 23, 0.52) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 25, 23, 0.3) 1px, transparent 1px);
  background-size: 42px 42px;
}

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

button,
input,
textarea {
  font-family: var(--font-sans);
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--c-seal);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--r-md) var(--r-md);
  color: var(--c-parchment);
  background: var(--c-ink);
  font-size: 0.875rem;
  transition: top 120ms;
}

.skip-link:focus {
  top: 0;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s4);
  padding: 0.85rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--c-border);
  background: color-mix(in srgb, var(--c-parchment) 86%, transparent);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links,
.hero-actions,
.site-footer,
.site-footer nav,
.inline-form {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.75rem;
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 500;
}

.brand-mark {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border-radius: 50%;
  color: var(--c-parchment);
  background: var(--c-ink);
}

.nav-links {
  gap: 1.25rem;
  color: var(--c-ink);
  font-size: 0.93rem;
  font-weight: 500;
}

.nav-links a {
  border-bottom: 1.5px solid transparent;
  opacity: 0.6;
  padding-block: 0.2rem;
}

.nav-links a.active,
.nav-links a:hover {
  border-bottom-color: currentColor;
  opacity: 1;
}

.nav-toggle {
  display: none;
  width: 2.4rem;
  height: 2.4rem;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 1px;
  margin-inline: auto;
  background: var(--c-ink);
}

.section {
  padding: clamp(5rem, 9vw, 8rem) clamp(1rem, 4vw, 3rem);
}

.hero {
  position: relative;
  display: grid;
  min-height: 100vh;
  align-items: center;
  gap: 4rem;
  padding-top: 7rem;
  overflow: hidden;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.95fr);
}

.section-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--c-gold);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--c-ink);
  font-family: var(--font-serif);
  font-weight: 400;
}

.hero h1 {
  max-width: 16ch;
  color: var(--c-ink);
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 400;
  line-height: 1.12;
}

.hero h1 em {
  color: var(--c-gold);
  font-style: italic;
}

.section-header {
  max-width: 58rem;
  margin-bottom: 2rem;
}

.section-header h2 {
  max-width: 24ch;
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 400;
  line-height: 1.25;
}

.section-header p,
.lead,
.waitlist-card p {
  max-width: 42rem;
  color: var(--c-ink-muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 120ms ease, transform 80ms ease, background 120ms ease;
}

.btn-primary {
  border: 1px solid var(--c-ink);
  color: var(--c-parchment);
  background: var(--c-ink);
}

.btn-primary:hover {
  opacity: 0.82;
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.btn-ghost {
  border: 1px solid var(--c-border);
  color: var(--c-ink);
  background: transparent;
}

.btn-ghost:hover {
  background: rgba(28, 25, 23, 0.05);
}

.full-width {
  width: 100%;
}

.scroll-cue {
  display: inline-grid;
  width: 2rem;
  height: 2.8rem;
  place-items: start center;
  margin-top: 2rem;
  border: 1px solid var(--c-border);
  border-radius: 999px;
}

.scroll-cue span {
  width: 5px;
  height: 5px;
  margin-top: 0.55rem;
  border-radius: 50%;
  background: var(--c-gold);
  animation: cue 1.6s ease-in-out infinite;
}

.hero-stage {
  position: relative;
  min-height: 38rem;
}

.globe,
.world-map {
  background:
    radial-gradient(circle at 22% 34%, rgba(245, 240, 232, 0.16), transparent 14rem),
    radial-gradient(circle at 32% 18%, rgba(125, 211, 252, 0.22), transparent 15rem),
    radial-gradient(circle at 70% 52%, rgba(217, 119, 6, 0.24), transparent 16rem),
    radial-gradient(circle at 42% 72%, rgba(124, 58, 237, 0.16), transparent 12rem),
    linear-gradient(140deg, #1c1917, #375c66 46%, #6f8a73 70%, #d97706);
}

.globe {
  position: absolute;
  inset: 2rem 0 auto auto;
  width: min(38rem, 78vw);
  aspect-ratio: 1;
  border-radius: 50%;
  opacity: 0.9;
  box-shadow: 0 34px 100px rgba(28, 25, 23, 0.18);
  animation: turn 80s linear infinite;
}

.continent {
  position: absolute;
  border-radius: 45%;
  background: rgba(248, 244, 237, 0.2);
  filter: blur(1px);
}

.c1 {
  left: 10%;
  top: 23%;
  width: 43%;
  height: 31%;
}

.c2 {
  right: 9%;
  bottom: 18%;
  width: 46%;
  height: 27%;
  background: rgba(245, 240, 232, 0.13);
}

.c3 {
  right: 16%;
  top: 18%;
  width: 24%;
  height: 18%;
}

.pin,
.map-pin {
  position: absolute;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 8px rgba(217, 119, 6, 0.16), 0 0 34px rgba(217, 119, 6, 0.46);
  animation: pulse 2.8s ease-in-out infinite;
}

.p1 { left: 22%; top: 40%; }
.p2 { left: 48%; top: 32%; animation-delay: 0.35s; }
.p3 { left: 66%; top: 52%; animation-delay: 0.7s; }
.p4 { left: 78%; top: 38%; animation-delay: 1s; }

.floating-card,
.feature-card,
.memory-card,
.settings-panel,
.letter-composer,
.waitlist-card,
.capsule-grid article {
  border: 0.5px solid var(--c-border);
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--c-parchment) 90%, white);
  box-shadow: 0 24px 80px rgba(28, 25, 23, 0.09);
}

.floating-card {
  position: absolute;
  max-width: 20rem;
  padding: 1.25rem;
}

.floating-card span,
.capsule-grid span {
  color: var(--c-gold);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.floating-card strong {
  display: block;
  margin-top: 0.8rem;
  color: var(--c-ink);
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 400;
  line-height: 1.1;
}

.floating-card p,
.feature-card p,
.memory-card p,
.capsule-grid p {
  color: var(--c-ink-muted);
  line-height: 1.65;
}

.card-one {
  left: 0;
  top: 5rem;
}

.card-two {
  right: 0;
  bottom: 2rem;
}

.principles,
.memory-grid,
.capsule-grid {
  display: grid;
  gap: 1rem;
}

.principles {
  grid-template-columns: repeat(4, 1fr);
}

.principles-header {
  grid-column: 1 / -1;
}

.feature-card,
.memory-card,
.capsule-grid article {
  position: relative;
  overflow: hidden;
  padding: 1.5rem;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms ease;
}

.feature-card:hover,
.memory-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(28, 25, 23, 0.08);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.icon {
  display: inline-flex;
  color: var(--c-gold);
}

.feature-card h3,
.memory-card h3,
.capsule-grid h3,
.settings-panel h3 {
  margin-top: 1rem;
  font-size: 1.55rem;
  line-height: 1.15;
}

.split {
  display: grid;
  align-items: start;
  gap: 3rem;
  background: rgba(245, 240, 232, 0.52);
  grid-template-columns: 0.8fr 1.2fr;
}

.memory-grid {
  grid-template-columns: repeat(2, 1fr);
}

.emotion-tag {
  display: inline-block;
  margin-bottom: 0.5rem;
  color: var(--c-gold);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
}

.year-badge {
  display: inline-block;
  margin: 0 0 0.75rem 0.5rem;
  padding: 2px 8px;
  border: 0.5px solid var(--c-border);
  border-radius: 2px;
  color: var(--c-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.memory-location {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 0.75rem;
  color: var(--c-ink-faint);
  font-size: 0.75rem;
}

.memory-location::before {
  content: "◎";
  color: var(--c-gold);
  font-size: 0.6rem;
}

.map-section {
  padding-top: 0;
}

.world-map {
  position: relative;
  min-height: 34rem;
  overflow: hidden;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  box-shadow: 0 24px 80px rgba(28, 25, 23, 0.12);
}

.map-message {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  display: grid;
  gap: 0.35rem;
  padding: 1.2rem;
  border: 1px solid rgba(245, 240, 232, 0.32);
  border-radius: var(--r-sm);
  color: var(--c-parchment);
  background: rgba(28, 25, 23, 0.34);
  backdrop-filter: blur(12px);
}

.map-message strong {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 400;
}

.letter-form {
  display: grid;
  align-items: start;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) 24rem;
}

.letter-composer {
  max-width: 640px;
  margin: 0 auto;
  padding: 2.5rem;
  background: var(--c-parchment);
}

.settings-panel,
.waitlist-card,
.photo-form,
.archive-card {
  padding: 1.5rem;
}

.field {
  margin-bottom: 1rem;
}

label,
legend {
  display: block;
  margin: 0 0 0.45rem;
  color: var(--c-ink-muted);
  font-size: 0.86rem;
  font-weight: 700;
}

fieldset {
  margin: 1rem 0 0;
  padding: 0;
  border: 0;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  padding: 0.85rem;
  color: var(--c-ink);
  background: rgba(255, 255, 255, 0.32);
  font: inherit;
}

input[type="file"] {
  background: rgba(255, 255, 255, 0.46);
}

.letter-textarea {
  width: 100%;
  min-height: 320px;
  padding: 0;
  border: none;
  outline: none;
  color: var(--c-ink);
  background: transparent;
  background-image: repeating-linear-gradient(
    transparent,
    transparent 31px,
    rgba(28, 25, 23, 0.08) 31px,
    rgba(28, 25, 23, 0.08) 32px
  );
  background-attachment: local;
  caret-color: var(--c-gold);
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 2rem;
  resize: none;
}

.privacy-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  padding: 0.9rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  color: var(--c-ink);
  cursor: pointer;
}

.privacy-card input {
  width: auto;
  margin-top: 0.2rem;
}

.privacy-card strong,
.privacy-card small {
  display: block;
}

.privacy-card small {
  margin-top: 0.3rem;
  color: var(--c-ink-muted);
  line-height: 1.5;
}

.mood-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.mood-chip {
  border: 1px solid var(--c-border);
  border-radius: 20px;
  padding: 4px 14px;
  color: var(--c-ink);
  background: transparent;
  cursor: pointer;
}

.mood-chip.selected {
  border-color: var(--c-ink);
  color: var(--c-parchment);
  background: var(--c-ink);
}

.settings-panel .btn-primary {
  margin-top: 1.5rem;
}

button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.form-status {
  min-height: 1.4rem;
  margin: 0.9rem 0 0;
  color: var(--c-ink-muted);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.5;
}

.form-status.error {
  color: #b91c1c;
}

.form-status.success {
  color: #15803d;
}

.photo-memory {
  background: rgba(245, 240, 232, 0.58);
}

.waitlist-card,
.photo-form {
  max-width: 760px;
}

.photo-form {
  border: 1px solid var(--c-border);
  background: rgba(255, 255, 255, 0.36);
}

.photo-form textarea {
  min-height: 140px;
  resize: vertical;
}

.form-row {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.inline-form {
  align-items: stretch;
  gap: 0.75rem;
}

.inline-form input {
  min-width: 0;
}

.archive-section {
  background: rgba(255, 255, 255, 0.32);
}

.archive-toolbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.archive-toolbar .form-status {
  margin: 0;
}

.archive-columns {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.archive-columns h3 {
  margin: 0 0 0.8rem;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
}

.archive-list {
  display: grid;
  gap: 1rem;
}

.archive-card {
  border: 1px solid var(--c-border);
  background: rgba(245, 240, 232, 0.7);
}

.archive-card h4 {
  margin: 0.65rem 0 0.4rem;
  font-size: 1.05rem;
}

.archive-card p {
  margin: 0;
  color: var(--c-ink-muted);
  line-height: 1.65;
}

.archive-card small {
  display: block;
  margin-top: 0.75rem;
  color: var(--c-ink-muted);
}

.archive-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.archive-meta span {
  border: 1px solid var(--c-border);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  color: var(--c-ink-muted);
  font-size: 0.76rem;
  font-weight: 700;
}

.photo-strip {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1rem;
}

.photo-strip img {
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  object-fit: cover;
}

.empty-state {
  margin: 0;
  color: var(--c-ink-muted);
}

.capsule-grid {
  grid-template-columns: repeat(3, 1fr);
}

.site-footer {
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--c-border);
  color: var(--c-ink-muted);
}

.site-footer div {
  display: grid;
  gap: 0.25rem;
}

.site-footer nav {
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer a:hover {
  color: var(--c-ink);
}

@keyframes turn {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  50% {
    transform: scale(1.5);
    opacity: 0.75;
  }
}

@keyframes cue {
  50% {
    transform: translateY(0.85rem);
  }
}

@media (max-width: 980px) {
  .hero,
  .split,
  .letter-form,
  .archive-columns {
    grid-template-columns: 1fr;
  }

  .principles,
  .capsule-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-stage {
    min-height: 32rem;
  }
}

@media (max-width: 768px) {
  .site-header {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
    order: 3;
  }

  .nav-links {
    display: none;
    order: 5;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
    border: 1px solid var(--c-border);
    background: var(--c-parchment);
    box-shadow: 0 18px 40px rgba(28, 25, 23, 0.08);
  }

  .nav-links.open {
    display: flex;
  }

  .header-action {
    margin-left: auto;
  }
}

@media (max-width: 640px) {
  .header-action {
    display: none;
  }

  .section {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .section-header h2 {
    font-size: 1.7rem;
  }

  .hero-stage {
    min-height: 35rem;
  }

  .globe {
    width: 28rem;
    right: -7rem;
  }

  .floating-card {
    max-width: 17rem;
  }

  .card-two {
    bottom: 0;
  }

  .principles,
  .memory-grid,
  .capsule-grid {
    grid-template-columns: 1fr;
  }

  .letter-composer {
    padding: 1.25rem;
  }

  .inline-form,
  .form-row,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}