:root {
  --bg: oklch(97.5% 0.012 350);
  --dot: oklch(88% 0.03 340 / 0.5);
  --glow1: oklch(93% 0.03 340 / 0.5);
  --glow2: oklch(92% 0.035 328 / 0.45);
  --ink: oklch(28% 0.02 340);
  --ink-strong: oklch(30% 0.03 340);
  --ink-soft: oklch(42% 0.03 340);
  --rose: oklch(60% 0.17 328);
  --rose-deep: oklch(50% 0.16 328);
  --rose-hover: oklch(42% 0.18 328);
  --rose-mid: oklch(55% 0.16 328);
  --rose-label: oklch(45% 0.16 328);
  --rose-soft: oklch(48% 0.14 328);
  --line: oklch(90% 0.03 340);
  --card-bg: oklch(94% 0.025 345);
  --range-color: oklch(52% 0.08 335);
  --overlay: oklch(20% 0.02 340 / 0.55);
  --modal-bg: oklch(98% 0.01 350);
  --dot-inactive: oklch(85% 0.03 340);
  --dot-active: oklch(55% 0.16 328);
  --close-bg: oklch(92% 0.02 345);
  --nav-bg: oklch(98% 0.01 350 / 0.85);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: 'Work Sans', sans-serif;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 15% 8%, var(--glow1), transparent 55%),
    radial-gradient(circle at 85% 60%, var(--glow2), transparent 50%),
    radial-gradient(var(--dot) 1.5px, transparent 1.5px);
  background-size: auto, auto, 26px 26px;
  background-position: 0 0, 0 0, 0 0;
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: var(--rose-deep); text-decoration: none; }
a:hover { color: var(--rose-hover); }

button { font-family: inherit; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes floatDot {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes cardFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Hero ---------- */

.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px;
  gap: 20px;
}

.hero-date {
  font-family: 'Lora', serif;
  font-style: italic;
  font-size: clamp(15px, 2vw, 18px);
  color: var(--rose-mid);
  letter-spacing: 0.04em;
}

.hero-title {
  font-family: 'Lora', serif;
  font-weight: 500;
  font-size: clamp(38px, 9vw, 64px);
  margin: 0;
  line-height: 1.08;
  color: var(--ink-strong);
}

.hero-title .amp {
  color: var(--rose);
  font-style: italic;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 19px);
  max-width: 440px;
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.6;
}

.scroll-hint {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  animation: floatDot 2.2s ease-in-out infinite;
}

.scroll-hint .scroll-line {
  width: 1px;
  height: 46px;
  background: linear-gradient(to bottom, transparent, var(--rose-mid));
}

.scroll-hint span {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: oklch(55% 0.1 328);
}

/* ---------- Timeline ---------- */

.timeline {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 24px 120px;
  position: relative;
}

.timeline-rail {
  position: absolute;
  left: 35px;
  top: 28px;
  bottom: 60px;
  width: 2px;
  background: var(--line);
}

@media (max-width: 480px) {
  .timeline-rail { left: 31px; }
}

.month-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: 56px;
  opacity: 0;
  animation: cardFadeUp 0.6s ease forwards;
}

@media (max-width: 480px) {
  .month-item { padding-left: 66px; margin-bottom: 44px; }
}

.month-num {
  all: unset;
  box-sizing: border-box;
  position: absolute;
  left: 19px;
  top: 2px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--rose);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Lora', serif;
  font-size: 14px;
  color: var(--rose-label);
  cursor: pointer;
  z-index: 1;
}

@media (max-width: 480px) {
  .month-num { left: 15px; width: 30px; height: 30px; font-size: 13px; }
}

.month-card {
  all: unset;
  cursor: pointer;
  display: block;
  width: 100%;
  box-sizing: border-box;
  text-align: left;
  background: var(--card-bg);
  border-radius: 16px;
  padding: 20px 22px;
  transition: transform 0.15s;
}

.month-card:hover,
.month-card:focus-visible {
  transform: translateY(-2px);
}

.month-card-title {
  font-family: 'Lora', serif;
  font-weight: 500;
  font-size: clamp(18px, 3vw, 20px);
  color: var(--ink-strong);
  margin-bottom: 4px;
}

.month-card-range {
  font-size: 13px;
  color: var(--range-color);
  margin-bottom: 10px;
}

.month-card-cta {
  font-size: 14px;
  color: var(--rose-soft);
  font-weight: 500;
}

/* ---------- Modal ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 10;
  backdrop-filter: blur(3px);
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--modal-bg);
  border-radius: 22px;
  max-width: 420px;
  width: 100%;
  padding: 26px;
  position: relative;
  animation: fadeUp 0.25s ease;
  max-height: 92vh;
  overflow-y: auto;
}

@media (max-width: 480px) {
  .modal {
    max-width: 100%;
    border-radius: 18px;
    padding: 20px;
    padding-top: max(20px, env(safe-area-inset-top));
    padding-bottom: max(20px, env(safe-area-inset-bottom));
  }
}

.modal-close {
  all: unset;
  position: absolute;
  top: 16px;
  right: 16px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--close-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  color: var(--ink-soft);
}

.modal-range {
  font-family: 'Lora', serif;
  font-style: italic;
  font-size: 13px;
  color: var(--rose-mid);
  margin-bottom: 2px;
  padding-right: 30px;
}

.modal-label {
  font-family: 'Lora', serif;
  font-weight: 500;
  font-size: 24px;
  color: var(--ink-strong);
  margin-bottom: 16px;
}

.photo-frame {
  position: relative;
  margin-bottom: 14px;
  border-radius: 16px;
  overflow: hidden;
  width: 100%;
  height: clamp(300px, 44vh, 420px);
  background: linear-gradient(160deg, var(--card-bg), oklch(90% 0.04 340));
}

@media (max-width: 480px) {
  .photo-frame { height: min(62vh, 400px); }
}

.photo-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.photo-nav {
  all: unset;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--nav-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  color: var(--rose-soft);
  touch-action: manipulation;
}

.photo-nav.prev { left: 8px; }
.photo-nav.next { right: 8px; }

.photo-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.photo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  cursor: pointer;
  background: var(--dot-inactive);
  border: none;
  padding: 0;
}

.photo-dot.active {
  background: var(--dot-active);
}

.modal-phrase {
  font-family: 'Lora', serif;
  font-style: italic;
  font-size: 17px;
  line-height: 1.55;
  color: oklch(32% 0.03 340);
  margin: 0;
}

.modal-note {
  font-family: 'Work Sans', sans-serif;
  font-style: normal;
  font-size: 15px;
  line-height: 1.6;
  color: var(--rose-deep);
  margin-top: 14px;
  font-weight: 500;
}

/* ---------- Finale ---------- */

.finale {
  text-align: center;
  padding: 60px 24px 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.finale-text {
  font-family: 'Lora', serif;
  font-style: italic;
  font-size: clamp(20px, 3vw, 26px);
  color: oklch(35% 0.05 335);
  max-width: 440px;
  margin: 0 auto;
  line-height: 1.5;
}

/* ---------- Floating scroll hearts ---------- */

.hearts-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  overflow: hidden;
}

.floating-heart {
  position: absolute;
  bottom: -40px;
  font-size: 20px;
  opacity: 0;
  filter: drop-shadow(0 2px 6px oklch(60% 0.17 328 / 0.35));
  animation: floatUp 3.2s ease-in forwards;
  will-change: transform, opacity;
}

@keyframes floatUp {
  0% { opacity: 0; transform: translateY(0) translateX(0) rotate(0deg) scale(0.7); }
  10% { opacity: 1; }
  80% { opacity: 0.9; }
  100% { opacity: 0; transform: translateY(-95vh) translateX(var(--drift, 20px)) rotate(var(--rot, 20deg)) scale(1.25); }
}

/* ---------- Heart pop on photo navigation ---------- */

.photo-heart-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 15;
  overflow: hidden;
}

.photo-pop-heart {
  position: absolute;
  transform: translate(-50%, -50%);
  opacity: 0;
  animation: heartPop 0.9s ease-out forwards;
  will-change: transform, opacity;
}

@keyframes heartPop {
  0% { opacity: 0; transform: translate(-50%, -50%) translateX(0) scale(0.3) rotate(0deg); }
  25% { opacity: 1; transform: translate(-50%, -50%) translateX(calc(var(--pop-x, 0px) * 0.3)) scale(1.15) rotate(var(--pop-rot, 0deg)); }
  100% { opacity: 0; transform: translate(-50%, -50%) translateY(-56px) translateX(var(--pop-x, 0px)) scale(0.9) rotate(var(--pop-rot, 0deg)); }
}

/* ---------- Heart burst (click) ---------- */

.burst-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  overflow: hidden;
}

.burst-heart {
  position: absolute;
  left: 0;
  top: 0;
  will-change: transform, opacity;
  animation: burstFly var(--burst-dur, 1.1s) cubic-bezier(0.15, 0.6, 0.35, 1) forwards;
}

@keyframes burstFly {
  0% {
    opacity: 1;
    transform: translate(0, 0) scale(0.4) rotate(0deg);
  }
  70% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(var(--tx), var(--ty)) scale(var(--sc, 1)) rotate(var(--tr, 180deg));
  }
}

/* ---------- Responsive tweaks ---------- */

@media (min-width: 768px) {
  .timeline { padding-top: 32px; }
}

@media (max-width: 380px) {
  .hero { padding: 40px 18px; }
  .timeline { padding-left: 16px; padding-right: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-hint,
  .floating-heart,
  .burst-heart,
  .photo-pop-heart,
  .month-item {
    animation: none !important;
    opacity: 1;
  }
}