@font-face {
  font-family: "digit";
  src: url("../digital-7_mono.ttf") format("truetype");
}

:root {
  --bg: #fff4ec;
  --rose: #c45b6a;
  --rose-soft: #f3b6b2;
  --gold: #c9a36a;
  --ink: #5a3140;
  --muted: #8a5a68;
  --card: rgba(255, 255, 255, 0.62);
  --line: rgba(196, 91, 106, 0.16);
  --shadow: 0 12px 32px rgba(90, 49, 64, 0.08);
  --radius: 22px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  color: var(--ink);
  font-family: "Noto Serif SC", "Songti SC", serif;
  background:
    radial-gradient(circle at 12% 8%, rgba(255, 214, 214, 0.72), transparent 30%),
    radial-gradient(circle at 88% 18%, rgba(255, 228, 186, 0.48), transparent 28%),
    radial-gradient(circle at 70% 90%, rgba(243, 182, 178, 0.3), transparent 32%),
    var(--bg);
  overflow-x: hidden;
}

button,
input {
  font: inherit;
}

canvas#sky,
.petals,
.hearts-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

canvas#sky {
  z-index: 0;
}

.petals,
.hearts-layer {
  z-index: 1;
  overflow: hidden;
}

.nav,
.toolbar,
.page {
  position: relative;
  z-index: 2;
}

.nav {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  gap: 4px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.nav a {
  padding: 8px 16px;
  color: var(--muted);
  text-decoration: none;
  border-radius: 999px;
}

.nav a:hover,
.nav a.active {
  color: var(--rose);
  background: rgba(255, 255, 255, 0.7);
}

body.home-intro .nav,
body.home-intro .toolbar {
  opacity: 0;
  pointer-events: none;
}

.nav,
.toolbar {
  transition: opacity 180ms ease;
}

.toolbar {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.icon-btn {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--card);
  color: var(--rose);
  box-shadow: var(--shadow);
  cursor: pointer;
}

.panel,
.letter,
#code,
#loveHeart,
.photo-card,
.lightbox-close,
.lightbox-prev,
.lightbox-next {
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

#code,
#loveHeart,
.panel,
.letter {
  border-radius: var(--radius);
}

.eyebrow {
  color: var(--rose);
  letter-spacing: 0.28em;
  font-size: 13px;
}

h2 {
  font-family: "Ma Shan Zheng", "Noto Serif SC", serif;
  font-weight: 400;
}

.muted {
  color: var(--muted);
  line-height: 1.9;
}

section {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 88px 0;
}

/* The opening screen intentionally matches the original loveheart page. */
.clock-home {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: none;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 72px 24px 28px;
  background: #ffffee;
}

.clock-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  width: min(1110px, 100%);
  margin: 0 auto;
}

.clock-home #code,
.clock-home #loveHeart {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.clock-home #code {
  width: 440px;
  flex: 0 1 440px;
  padding: 0;
  overflow: hidden;
  color: #333;
  font-family: "Consolas", "Monaco", "Bitstream Vera Sans Mono", "Courier New", sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.clock-home #code .space {
  display: inline-block;
  width: 23px;
}

.clock-home #code .comments {
  color: palevioletred;
}

.clock-home #code .caret {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  margin-left: 1px;
  vertical-align: -0.18em;
  background: palevioletred;
  animation: caretBlink 0.9s steps(1, end) infinite;
}

@keyframes caretBlink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

#loveHeart {
  position: relative;
  width: 670px;
  height: 625px;
  flex: 0 1 670px;
  overflow: hidden;
}

#garden {
  display: block;
  width: 100%;
  height: 100%;
}

#words {
  position: absolute;
  width: 505px;
  color: #666;
  font-family: sans-serif;
  font-size: 24px;
  text-align: left;
  pointer-events: none;
}

#messages,
#loveu {
  display: none;
}

#elapseClock {
  margin: 10px 0;
  font-size: 18px;
  line-height: 1.4;
  text-align: right;
}

#elapseClock .digit {
  font-family: "digit", monospace;
  font-size: 36px;
}

#loveu {
  margin: 80px 120px 0 0;
  padding: 5px;
  color: #666;
  font-family: sans-serif;
  font-size: 22px;
  text-align: right;
}

#loveu .signature {
  margin-top: 10px;
  color: #666;
  font-size: 20px;
  font-style: italic;
}

.section-title {
  margin-bottom: 36px;
}

.section-title h2 {
  font-size: clamp(32px, 6vw, 48px);
  margin-top: 8px;
}

.section-title code {
  color: var(--rose);
  font-size: 0.92em;
}

.timeline {
  position: relative;
  display: grid;
  gap: 16px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(var(--rose-soft), transparent);
}

.panel {
  margin-left: 46px;
  padding: 22px 24px;
}

.panel h3 {
  margin: 6px 0 8px;
  font-size: 20px;
}

.dot {
  position: absolute;
  left: 13px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--rose);
  box-shadow: 0 0 0 6px rgba(243, 182, 178, 0.35);
}

.panel time {
  color: var(--gold);
  font-size: 13px;
}

.envelope-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.envelope {
  position: relative;
  width: min(380px, 88vw);
  height: 230px;
  margin-top: 8px;
  padding: 0;
  border: 0;
  appearance: none;
  border-radius: 14px;
  background: linear-gradient(160deg, #ee9ba4, #c45b6a);
  box-shadow: 0 26px 54px rgba(90, 49, 64, 0.22);
  cursor: pointer;
  perspective: 1000px;
  transition: transform 0.6s ease, opacity 0.6s ease;
}

.envelope__pocket {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: linear-gradient(160deg, #ed8e99, #c45b6a);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 72%, 0 100%);
}

.envelope__flap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 62%;
  background: linear-gradient(180deg, #f4adb5, #d97a86);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  transform-origin: top center;
  transition: transform 0.55s ease;
  backface-visibility: hidden;
  z-index: 2;
}

.envelope__seal {
  position: absolute;
  top: 58%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #dc8591, #a63d4e);
  color: #fff;
  font-size: 26px;
  box-shadow: 0 6px 16px rgba(90, 49, 64, 0.32);
  transition: transform 0.55s ease, opacity 0.55s ease;
}

.envelope__hint {
  position: absolute;
  left: 50%;
  bottom: -34px;
  transform: translateX(-50%);
  color: var(--rose);
  font-size: 13px;
  letter-spacing: 0.18em;
  white-space: nowrap;
}

.envelope:hover .envelope__seal {
  transform: translate(-50%, -50%) scale(1.08);
}

.envelope-stage.is-open .envelope__flap {
  transform: rotateX(180deg);
}

.envelope-stage.is-open .envelope__seal {
  transform: translate(-50%, -50%) scale(0.5);
  opacity: 0;
}

.envelope-stage.is-opened .envelope {
  display: none;
}

.photo-wall {
  column-count: 3;
  column-gap: 14px;
}

.photo-card {
  position: relative;
  display: inline-block;
  width: 100%;
  margin: 0 0 14px;
  overflow: hidden;
  break-inside: avoid;
  border-radius: 18px;
  cursor: default;
}

.photo-card:not(.has-photo) {
  min-height: 210px;
}

.photo-card:nth-child(3n):not(.has-photo) {
  min-height: 280px;
}

.photo-card:nth-child(3n + 1):not(.has-photo) {
  min-height: 168px;
}

.photo-card img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.45s ease;
}

.photo-card.has-photo {
  cursor: zoom-in;
}

.photo-card.has-photo:hover img {
  transform: scale(1.04);
}

.photo-slot {
  min-height: inherit;
  height: 100%;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.photo-slot b {
  display: block;
  color: var(--rose);
}

.photo-card .photo-tag {
  position: absolute;
  left: 10px;
  bottom: 10px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--rose);
  font-size: 12px;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  background: rgba(90, 49, 64, 0.42);
  backdrop-filter: blur(12px);
}

.lightbox[hidden] {
  display: none;
}

.lightbox img {
  max-width: min(92vw, 1100px);
  max-height: 78vh;
  object-fit: contain;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  color: var(--rose);
  cursor: pointer;
  border-radius: 50%;
}

.lightbox-close {
  top: 18px;
  right: 18px;
  width: 44px;
  height: 44px;
  font-size: 28px;
}

.lightbox-prev,
.lightbox-next {
  top: 50%;
  width: 44px;
  height: 44px;
  font-size: 28px;
  transform: translateY(-50%);
}

.lightbox-prev {
  left: 16px;
}

.lightbox-next {
  right: 16px;
}

.lightbox-cap {
  position: absolute;
  bottom: 22px;
  color: #fff;
  letter-spacing: 0.12em;
  font-size: 14px;
}

.hidden {
  display: none !important;
}

@media (max-width: 960px) {
  .clock-home {
    align-items: flex-start;
    padding: 76px 16px 36px;
  }

  .clock-stage {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  .clock-home #code {
    width: 100%;
    flex: 1 1 auto;
    font-size: 15px;
    line-height: 1.7;
  }

  .clock-home #code .space {
    width: 14px;
  }

  #loveHeart {
    width: min(670px, 100%);
    height: auto;
    aspect-ratio: 670 / 625;
    margin-top: 8px;
  }

  #words {
    width: 100%;
    font-size: 18px;
    text-align: center;
  }

  #elapseClock {
    text-align: center;
  }

  #elapseClock .digit {
    font-size: 26px;
  }

  #loveu {
    margin: 44px 0 0;
    padding: 0;
    font-size: 19px;
    text-align: center;
  }

  #loveu .signature {
    font-size: 17px;
  }

  .scroll-hint {
    bottom: 12px;
  }

  .nav {
    width: calc(100% - 16px);
    overflow: auto;
  }

  .photo-wall {
    column-count: 2;
  }
}

@media (max-width: 720px) {
  .photo-wall {
    column-count: 1;
  }
}

@keyframes rise {
  to {
    transform: translateY(-48px);
    opacity: 0;
  }
}

/* ============ 浪漫增强 ============ */

/* 漂移的柔光极光 */
.aurora {
  position: fixed;
  inset: -10%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(38% 38% at 18% 20%, rgba(255, 178, 188, 0.5), transparent 70%),
    radial-gradient(32% 32% at 84% 28%, rgba(255, 210, 158, 0.46), transparent 70%),
    radial-gradient(40% 40% at 52% 88%, rgba(243, 182, 178, 0.38), transparent 70%);
  filter: blur(26px);
  animation: aurora 26s ease-in-out infinite alternate;
}

@keyframes aurora {
  0% { transform: translate3d(-2%, -2%, 0) scale(1); }
  100% { transform: translate3d(2%, 3%, 0) scale(1.08); }
}

/* 月亮与光晕 */
.moon {
  position: fixed;
  top: 9vh;
  right: 8vw;
  z-index: 1;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: radial-gradient(circle at 36% 34%, #fffdf4 0%, #fdeed0 42%, #f6d9a6 78%, #ecc894 100%);
  box-shadow:
    0 0 0 1px rgba(255, 244, 220, 0.35),
    0 0 46px 14px rgba(255, 228, 178, 0.45),
    0 0 140px 44px rgba(255, 214, 160, 0.22);
  pointer-events: none;
  animation: moonGlow 7s ease-in-out infinite;
}

@keyframes moonGlow {
  0%, 100% { transform: scale(1); filter: brightness(1); }
  50% { transform: scale(1.05); filter: brightness(1.07); }
}

/* 开场柔和的腮红底色 */
.clock-home {
  background:
    radial-gradient(ellipse at 50% 46%, rgba(255, 224, 216, 0.5), transparent 62%),
    radial-gradient(ellipse at 16% 18%, rgba(255, 236, 220, 0.6), transparent 50%),
    #ffffee;
}

/* 下滑提示 */
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: #c46a76;
  text-decoration: none;
  letter-spacing: 0.2em;
  font-size: 13px;
  opacity: 0;
  animation: hintIn 1s ease 2.6s forwards;
}

.scroll-hint__arrow {
  font-size: 22px;
  animation: hintBounce 1.6s ease-in-out infinite;
}

@keyframes hintIn {
  to { opacity: 0.85; }
}

@keyframes hintBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(7px); }
}

/* 章节标题：渐变字 + 爱心花饰 */
.section-title {
  text-align: center;
}

.section-title h2 {
  background: linear-gradient(120deg, #c45b6a, #d98a6b 55%, #c9a36a);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-title::after {
  content: "♡  ♡  ♡";
  display: block;
  margin: 16px auto 0;
  color: var(--rose-soft);
  letter-spacing: 0.35em;
  font-size: 13px;
}

/* 面板悬浮光晕 */
.panel.reveal {
  transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, border-color 0.35s ease;
}

.panel:hover {
  border-color: rgba(196, 91, 106, 0.32);
  box-shadow: 0 18px 42px rgba(90, 49, 64, 0.13);
}

/* 时间轴圆点呼吸 */
.dot {
  animation: dotPulse 2.4s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 6px rgba(243, 182, 178, 0.35); }
  50% { box-shadow: 0 0 0 12px rgba(243, 182, 178, 0.12); }
}

/* 信纸 */
.love-letter {
  width: min(760px, 100%);
  margin: 0 auto;
  padding: 46px 48px 44px;
  border: 1px solid rgba(196, 91, 106, 0.18);
  border-radius: 18px;
  background:
    linear-gradient(rgba(255, 253, 247, 0.94), rgba(255, 250, 242, 0.9)),
    repeating-linear-gradient(transparent 0 32px, rgba(196, 91, 106, 0.08) 32px 33px);
  box-shadow: 0 20px 50px rgba(90, 49, 64, 0.14);
  display: none;
}

.envelope-stage.is-opened .love-letter {
  display: block;
  animation: letterIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

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

.love-letter__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 18px;
  color: var(--rose);
  font-size: 15px;
  letter-spacing: 0.12em;
}

.love-letter__stamp {
  font-size: 18px;
}

.love-letter__body {
  max-height: min(60vh, 520px);
  overflow-y: auto;
  padding-right: 12px;
}

.love-letter__body::-webkit-scrollbar {
  width: 6px;
}

.love-letter__body::-webkit-scrollbar-thumb {
  background: rgba(196, 91, 106, 0.25);
  border-radius: 999px;
}

.love-letter__body::-webkit-scrollbar-track {
  background: transparent;
}

.love-letter__body p {
  line-height: 2.05;
  margin-bottom: 1.05em;
  text-align: justify;
  text-indent: 2em;
  color: #6b4350;
}

.love-letter__body p:first-child {
  font-size: 18px;
  color: var(--rose);
}

.love-letter__foot {
  margin-top: 30px;
  text-align: right;
  color: var(--rose);
  font-style: italic;
  letter-spacing: 0.12em;
  font-size: 17px;
}

/* 滚动浮现 */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* 环境飘心 */
@keyframes floatUp {
  0% { transform: translateY(0) translateX(0) rotate(0deg); opacity: 0; }
  12% { opacity: var(--a, 0.5); }
  100% { transform: translateY(-106vh) translateX(var(--sway, 30px)) rotate(320deg); opacity: 0; }
}

/* ============ Twikoo 评论区 ============ */
#comments {
  padding-bottom: 140px;
}

#tcomment {
  max-width: 780px;
  margin: 0 auto;
}