/* ============================================================
   王一凡 & 徐语心 · 婚礼 RSVP
   配色：赛里木湖 + 雪山森林（湖蓝 / 雪白 / 暖光）
   ============================================================ */

:root {
  --ink:     #2A3140;   /* 深石板蓝 - 主文字 */
  --ink-2:   #6E7382;   /* 雾石板 - 次要文字 */
  --lake:    #486A82;   /* 湖蓝 - 主色 */
  --lake-2:  #5A7E94;   /* hover */
  --pine:    #4F6E5E;   /* 松绿 - 次要色 */
  --sand:    #C9AC8A;   /* 日照金 - 暖色点缀 */
  --ivory:   #F2EEE5;   /* 雪白 - 页面底色 */
  --cream:   #E8E0D2;   /* 象牙 - 卡片高亮 */
  --line:    #D6CFC1;   /* 分割线 */
  --white:   #FFFFFF;

  --font-serif-cn: "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-serif-en: "Cormorant Garamond", "Noto Serif SC", serif;
  --font-sans:     "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;

  --shadow-soft: 0 2px 24px rgba(42, 49, 64, 0.05);
  --shadow-card: 0 8px 48px rgba(42, 49, 64, 0.07);

  --radius: 2px;
  --max-w: 560px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-weight: 300;
  color: var(--ink);
  background: var(--ivory);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

.muted { color: var(--ink-2); }

em {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-weight: 400;
}

/* ============================================================
   双语切换
   ============================================================ */

[data-lang] { display: none; }
body.lang-zh [data-lang="zh"] { display: inline; }
body.lang-en [data-lang="en"] { display: inline; }

/* 多行文本块（含 <br>）需要 block 才能正确换行 */
.cover__welcome [data-lang],
.rsvp__intro [data-lang] {
  display: none;
}
body.lang-zh .cover__welcome [data-lang="zh"],
body.lang-zh .rsvp__intro [data-lang="zh"],
body.lang-en .cover__welcome [data-lang="en"],
body.lang-en .rsvp__intro [data-lang="en"] {
  display: inline;
}

.lang-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(20, 28, 40, 0.40);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 4px;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.15em;
  user-select: none;
}

.lang-toggle__opt {
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  background: transparent;
  border: 0;
  padding: 5px 14px;
  color: rgba(255, 255, 255, 0.55);
  cursor: pointer;
  transition: color 0.25s ease, background 0.25s ease;
  border-radius: 999px;
  line-height: 1;
}

.lang-toggle__opt:hover {
  color: rgba(255, 255, 255, 0.95);
}

.lang-toggle__opt--active,
.lang-toggle__opt--active:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.18);
}

/* ============================================================
   封面
   ============================================================ */

.cover {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;   /* iOS Safari 等：随地址栏隐显动态调整，避免出现底部空白 */
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--white);
}

.cover__bg {
  position: absolute;
  inset: 0;
  background-image: url('cover-mobile.jpg');     /* 默认手机端：竖版 */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
}

/* 横屏（含手机横屏 / 平板横屏 / PC）：用横版照片 */
@media (orientation: landscape) {
  .cover__bg {
    background-image: url('cover-desktop.jpg');
  }
  /* 横版照片新娘在偏左，整块文字小幅右移避开人脸
     用专用动画做位移（而不是 translate 属性），兼容老 Safari */
  .cover__content {
    animation-name: fadeUpRight;
  }
}

@keyframes fadeUpRight {
  from { opacity: 0; transform: translate(6vw, 20px); }
  to   { opacity: 1; transform: translate(6vw, 0); }
}

.cover__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(20, 28, 40, 0.42) 0%,
      rgba(20, 28, 40, 0.25) 30%,
      rgba(20, 28, 40, 0.28) 60%,
      rgba(42, 49, 64, 0.65) 100%);
  z-index: 1;
}

.cover__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  max-width: 680px;
  margin-bottom: 8vh;  /* 在垂直居中容器里制造下方空间，把内容整体上移约 4vh */
  animation: fadeUp 1.6s ease-out both;
  /* 柔和暗色阴影：提升白字在照片上的可读性，不会形成明显硬阴影 */
  text-shadow:
    0 1px 2px rgba(0, 0, 0, 0.30),
    0 2px 14px rgba(0, 0, 0, 0.35);
}

.cover__eyebrow {
  font-size: 14px;
  letter-spacing: 0.3em;
  margin-bottom: 32px;
  opacity: 0.88;
}

.cover__eyebrow em {
  font-size: 18px;
  letter-spacing: 0.05em;
  font-weight: 300;
}

.cover__title {
  font-family: var(--font-serif-cn);
  font-weight: 600;
  font-size: clamp(32px, 7.5vw, 68px);
  letter-spacing: 0.25em;
  line-height: 1.35;
  margin-bottom: 32px;
  white-space: nowrap;   /* 防止 "徐语心" 在窄屏被换行 */
}

.cover__amp {
  display: inline-block;
  margin: 0 0.4em;
  font-family: var(--font-serif-en);
  font-style: italic;
  font-weight: 300;
  font-size: 0.9em;
  opacity: 0.78;
  vertical-align: 0.05em;
}

.cover__title-en {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(22px, 3.6vw, 32px);
  letter-spacing: 0.32em;
  margin-top: -4px;
  margin-bottom: 28px;
  opacity: 0.9;
}

.cover__amp-en {
  font-weight: 300;
  margin: 0 0.1em;
  opacity: 0.78;
}

.cover__ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
}

.cover__ornament-line {
  width: 56px;
  height: 1px;
  background: rgba(255, 255, 255, 0.55);
}

.cover__ornament-dot {
  width: 5px;
  height: 5px;
  transform: rotate(45deg);
  background: rgba(255, 255, 255, 0.85);
}

.cover__meta {
  font-family: var(--font-serif-cn);
  font-weight: 300;
  font-size: 16px;
  letter-spacing: 0.2em;
  opacity: 0.94;
  margin-bottom: 8px;
}

.cover__meta--small {
  font-size: 14px;
  letter-spacing: 0.24em;
  opacity: 0.82;
  margin-bottom: 40px;
}

.cover__welcome {
  font-family: var(--font-serif-cn);
  font-weight: 300;
  font-size: 14px;
  line-height: 2.3;
  letter-spacing: 0.12em;
  opacity: 0.9;
  margin-bottom: 48px;
}

.cover__cta {
  letter-spacing: 0.45em;
  text-indent: 0.45em;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   按钮
   ============================================================ */

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 13px;
  letter-spacing: 0.25em;
  padding: 14px 36px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
  background: transparent;
  color: inherit;
}

.btn--primary {
  background: var(--lake);
  color: var(--white);
  border-color: var(--lake);
}
.btn--primary:hover {
  background: var(--lake-2);
  border-color: var(--lake-2);
}

/* 封面上的主按钮：细描边款，更克制更优雅 */
.cover .btn--primary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.78);
  color: var(--white);
  padding: 16px 48px;
  font-weight: 300;
}
.cover .btn--primary:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: var(--white);
  letter-spacing: 0.5em;
  text-indent: 0.5em;
}

.btn--ghost {
  background: transparent;
  color: var(--ink-2);
  border-color: transparent;
  padding: 10px 16px;
  letter-spacing: 0.14em;
  font-size: 13px;
}
.btn--ghost:hover { color: var(--lake); }

/* ============================================================
   RSVP 区域
   ============================================================ */

.rsvp {
  background: var(--ivory);
  padding: 104px 24px 64px;
  min-height: 100vh;
}

.rsvp__container {
  max-width: var(--max-w);
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--line);
  padding: 64px 56px;
  box-shadow: var(--shadow-card);
  border-radius: var(--radius);
}

.rsvp__header {
  text-align: center;
  margin-bottom: 48px;
}

.rsvp__eyebrow {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-weight: 400;
  font-size: 16px;
  letter-spacing: 0.4em;
  color: var(--sand);
  margin-bottom: 18px;
}

.rsvp__title {
  font-family: var(--font-serif-cn);
  font-weight: 300;
  font-size: 28px;
  letter-spacing: 0.15em;
  text-indent: 0.15em;
  color: var(--lake);
  margin-bottom: 24px;
}

.rsvp__intro {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 2;
  letter-spacing: 0.06em;
}

/* ============================================================
   表单元素
   ============================================================ */

.step { animation: fadeIn 0.5s ease-out; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step__hint {
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 22px;
  letter-spacing: 0.06em;
  line-height: 1.9;
}

.step__actions {
  margin-top: 32px;
  display: flex;
  justify-content: flex-start;
}

.step__actions--split { justify-content: space-between; align-items: center; }
.step__actions--center { justify-content: center; }

.field { display: block; margin-bottom: 22px; }

.field__label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ink-2);
  margin-bottom: 12px;
  font-weight: 300;
}

.field__row { display: flex; gap: 12px; align-items: stretch; }
.field__row .input { flex: 1; }
.field__row .btn   { white-space: nowrap; padding: 0 28px; }

.input {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 300;
  color: var(--ink);
  background: var(--ivory);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.input:focus {
  outline: none;
  border-color: var(--lake);
  background: var(--white);
}

.input::placeholder { color: #B0AA9F; font-weight: 300; }

/* ============================================================
   搜索结果
   ============================================================ */

.results-list { display: flex; flex-direction: column; gap: 12px; }

.result-card {
  border: 1px solid var(--line);
  background: var(--ivory);
  padding: 22px 26px;
  cursor: pointer;
  transition: all 0.25s ease;
  border-radius: var(--radius);
  text-align: left;
  font-family: inherit;
  width: 100%;
}

.result-card:hover {
  border-color: var(--lake);
  background: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.result-card__names {
  font-family: var(--font-serif-cn);
  font-weight: 400;
  font-size: 17px;
  color: var(--ink);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.result-card__names .match {
  background: linear-gradient(transparent 62%, rgba(201, 172, 138, 0.45) 62%);
  padding: 0 1px;
}

.result-card__roles {
  font-size: 12px;
  color: var(--ink-2);
  letter-spacing: 0.06em;
}

/* ============================================================
   未找到提示
   ============================================================ */

.callout {
  border: 1px solid var(--line);
  background: var(--ivory);
  padding: 30px 32px;
  border-radius: var(--radius);
}

.callout__title {
  font-family: var(--font-serif-cn);
  font-weight: 400;
  font-size: 16px;
  color: var(--lake);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.callout__body {
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 14px;
}

.callout__list { list-style: none; padding: 0; }

.callout__list li {
  display: flex;
  justify-content: space-between;
  padding: 9px 0;
  border-top: 1px dashed var(--line);
  font-size: 13px;
}

.callout__list li:first-child { border-top: 0; }

/* ============================================================
   出席信息（成员卡片）
   ============================================================ */

.members { margin-top: 8px; display: flex; flex-direction: column; gap: 16px; }

.member-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  background: var(--ivory);
  transition: border-color 0.2s ease;
}

.member-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.member-card__name {
  font-family: var(--font-serif-cn);
  font-weight: 400;
  font-size: 18px;
  letter-spacing: 0.14em;
  color: var(--ink);
}

.member-card__badge {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sand);
  border: 1px solid var(--sand);
  padding: 2px 10px;
  border-radius: 999px;
}

.member-card__row {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}

.member-card__row:last-child { margin-bottom: 0; }

.member-card__row-label {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ink-2);
  width: 76px;
  flex-shrink: 0;
}

.choice-group { display: flex; gap: 8px; }

.choice {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 13px;
  letter-spacing: 0.18em;
  padding: 10px 18px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink-2);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.25s ease;
  min-width: 92px;
  white-space: nowrap;   /* 防止 "不 需 要" 之类的字符在按钮里被换行 */
}

.choice:hover { border-color: var(--pine); color: var(--ink); }

.choice input { position: absolute; opacity: 0; pointer-events: none; }

.choice--selected,
.choice--selected:hover {
  background: var(--lake);
  color: var(--white);
  border-color: var(--lake);
}

.member-card__row--accommodation.is-hidden { display: none; }

/* ============================================================
   信息提示卡（住宿说明等）
   ============================================================ */

.info-note {
  background: var(--ivory);
  border: 1px solid var(--line);
  border-left: 3px solid var(--sand);
  padding: 14px 18px;
  margin: 4px 0 22px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-2);
  letter-spacing: 0.04em;
  border-radius: var(--radius);
}

/* ============================================================
   确认页
   ============================================================ */

.confirm { text-align: center; }

.confirm__check {
  margin: 0 auto 22px;
  text-align: center;
}
.confirm__check img {
  display: inline-block;
  max-width: 140px;
  width: 100%;
  height: auto;
}

.confirm__illustration {
  margin-top: 40px;
  text-align: center;
}
.confirm__illustration img {
  display: block;
  width: 100%;
  height: auto;
}

.confirm__title {
  font-family: var(--font-serif-cn);
  font-weight: 300;
  font-size: 24px;
  letter-spacing: 0.22em;
  color: var(--lake);
  margin-bottom: 10px;
}

.confirm__sub {
  font-size: 13px;
  color: var(--ink-2);
  letter-spacing: 0.12em;
  margin-bottom: 36px;
}

.confirm__details {
  text-align: left;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  margin-bottom: 28px;
}

.confirm__details > div { display: flex; padding: 8px 0; font-size: 13px; }

.confirm__details dt {
  width: 80px;
  flex-shrink: 0;
  letter-spacing: 0.22em;
  color: var(--ink-2);
}

.confirm__details dd {
  flex: 1;
  color: var(--ink);
  letter-spacing: 0.06em;
}

.map-links {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.05em;
}
.map-links a {
  color: var(--lake);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.map-links a:hover { color: var(--lake-2); }
.map-links__sep { color: var(--ink-2); margin: 0 8px; }

.confirm__summary {
  background: var(--ivory);
  padding: 18px 22px;
  border-radius: var(--radius);
  font-size: 13px;
  text-align: left;
  margin-bottom: 28px;
  line-height: 2;
}

.confirm__summary-title {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--sand);
  margin-bottom: 10px;
}

.confirm__summary-line {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--line);
  padding: 5px 0;
  color: var(--ink);
}

.confirm__summary-line:last-child { border-bottom: 0; }
.confirm__summary-line .right { color: var(--ink-2); font-size: 12px; letter-spacing: 0.05em; }

/* ============================================================
   Footer
   ============================================================ */

.rsvp__footer {
  text-align: center;
  margin-top: 64px;
  padding-top: 32px;
  font-family: var(--font-serif-cn);
  font-weight: 300;
  font-size: 13px;
  letter-spacing: 0.4em;
  color: var(--ink-2);
}

.rsvp__footer p { margin-bottom: 6px; }

.rsvp__footer-en {
  font-family: var(--font-serif-en);
  font-style: italic;
  font-weight: 300;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--ink-2);
  opacity: 0.82;
}

/* ============================================================
   响应式
   ============================================================ */

/* 竖版封面图（≤ 767px）：内容靠上摆，避开下方人脸 */
@media (max-width: 767px) {
  .cover {
    align-items: flex-start;
    padding-top: 5vh;   /* 顶部留点呼吸空间 */
  }
  .cover__content {
    margin-bottom: 0;   /* 抵消桌面端的居中上移补偿 */
  }
  /* 头上面这一块：压缩元素间距，避免欢迎语压到人脸 */
  .cover__eyebrow      { margin-bottom: 20px; }
  .cover__title        { margin-bottom: 20px; }
  .cover__title-en     { margin-bottom: 18px; }
  .cover__ornament     { margin-bottom: 18px; }
  .cover__meta--small  { margin-bottom: 24px; }
  .cover__cta {
    margin-top: 12vh;   /* 同时把 RSVP 按钮向下推，与上方文字拉开距离 */
  }
}

/* 极窄屏（<480px）：进一步压小标题字距/字号，防止溢出 */
@media (max-width: 480px) {
  .cover__title {
    letter-spacing: 0.18em;
    font-size: 30px;
  }
}

@media (max-width: 640px) {
  .rsvp { padding: 64px 16px 48px; }
  .rsvp__container { padding: 44px 24px; }
  .rsvp__title { font-size: 22px; letter-spacing: 0.12em; }

  .field__row { flex-direction: column; }
  .field__row .btn { padding: 14px 28px; }

  .step__actions--split { flex-direction: column-reverse; gap: 12px; align-items: stretch; }
  .step__actions--split .btn { width: 100%; }

  .member-card__row { flex-wrap: wrap; }
  .member-card__row-label { width: 100%; margin-bottom: 8px; }

  .cover__welcome { font-size: 13px; line-height: 2; }
  .cover__ornament-line { width: 40px; }
}