/* 漫海 Slowsea — slowsea.web.app
   顏色取自 App 圖示：夜海 #0B1730、月光 #F2E8C9、海面 #17395F／#10294A、燈 #F2B76A。 */

:root {
  --night: #0b1730;
  --deep: #07101f;
  --sea: #17395f;
  --sea-dark: #10294a;
  --moon: #f2e8c9;
  --lamp: #f2b76a;
  --text: #e9e2cf;
  --muted: #a3afc4;
  --faint: rgba(242, 232, 201, 0.12);
  --card: rgba(16, 41, 74, 0.35);
  --serif: "Noto Serif TC", "Noto Serif", Georgia, serif;
  --sans: "Noto Sans TC", "Noto Sans", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--deep);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}
:lang(en) body, body:lang(en) { letter-spacing: 0; line-height: 1.7; }

a { color: var(--lamp); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--moon); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--lamp); outline-offset: 3px; border-radius: 4px; }

/* ---------- 語言：兩種語言都在頁面上，只顯示一種 ---------- */
html[data-lang="zh"] [lang="en"]:not(html):not(.keep) { display: none !important; }
html[data-lang="en"] [lang="zh-Hant"]:not(html):not(.keep) { display: none !important; }

/* ---------- 頂列 ---------- */
.bar {
  position: absolute; top: 0; left: 0; right: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1080px; margin: 0 auto; padding: 18px 20px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--moon); text-decoration: none;
  font-family: var(--serif); font-size: 17px; letter-spacing: 0.08em;
}
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.langs {
  display: inline-flex; padding: 3px; gap: 2px;
  border: 1px solid rgba(242, 232, 201, 0.22); border-radius: 999px;
  background: rgba(7, 16, 31, 0.55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.langs button {
  font: inherit; font-size: 13px; line-height: 1; letter-spacing: 0.04em;
  color: var(--muted); background: transparent; border: 0; border-radius: 999px;
  padding: 7px 14px; cursor: pointer; transition: background .2s, color .2s;
}
.langs button:hover { color: var(--moon); }
.langs button[aria-pressed="true"] { background: var(--moon); color: var(--night); font-weight: 600; }

/* ---------- 首頁的夜海 ---------- */
.sky {
  position: relative; overflow: hidden;
  min-height: 92vh; min-height: 92svh;
  display: flex; flex-direction: column; justify-content: center;
  background:
    radial-gradient(1200px 600px at 70% 18%, rgba(242, 232, 201, 0.07), transparent 60%),
    linear-gradient(180deg, #081226 0%, var(--night) 55%, #0e2242 100%);
}
.stars, .stars::after {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 12% 22%, rgba(242,232,201,.7), transparent 60%),
    radial-gradient(1px 1px at 28% 12%, rgba(242,232,201,.5), transparent 60%),
    radial-gradient(1.5px 1.5px at 41% 30%, rgba(242,232,201,.6), transparent 60%),
    radial-gradient(1px 1px at 57% 9%, rgba(242,232,201,.45), transparent 60%),
    radial-gradient(1px 1px at 83% 34%, rgba(242,232,201,.55), transparent 60%),
    radial-gradient(1.5px 1.5px at 91% 14%, rgba(242,232,201,.5), transparent 60%),
    radial-gradient(1px 1px at 7% 44%, rgba(242,232,201,.35), transparent 60%),
    radial-gradient(1px 1px at 66% 41%, rgba(242,232,201,.3), transparent 60%),
    radial-gradient(1px 1px at 35% 47%, rgba(242,232,201,.28), transparent 60%);
}
.stars::after {
  content: "";
  background-image:
    radial-gradient(1px 1px at 20% 36%, rgba(242,232,201,.5), transparent 60%),
    radial-gradient(1px 1px at 49% 18%, rgba(242,232,201,.4), transparent 60%),
    radial-gradient(1px 1px at 75% 24%, rgba(242,232,201,.45), transparent 60%);
  animation: twinkle 7s ease-in-out infinite alternate;
}
@keyframes twinkle { from { opacity: .25; } to { opacity: 1; } }

.moon {
  position: absolute; top: 14%; right: 14%;
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--moon);
  box-shadow: 0 0 60px 12px rgba(242, 232, 201, 0.12);
}

.hero {
  position: relative; z-index: 2;
  width: 100%; max-width: 760px; margin: 0 auto; padding: 120px 24px 220px;
}
.hero h1 {
  margin: 0 0 6px; font-family: var(--serif); font-weight: 500;
  font-size: clamp(40px, 9vw, 64px); letter-spacing: 0.18em; color: var(--moon);
}
.hero .en-name {
  margin: 0 0 36px; color: var(--muted);
  font-size: 14px; letter-spacing: 0.4em; text-transform: uppercase;
}
.hero .line {
  margin: 0 0 18px; font-family: var(--serif); font-weight: 400;
  font-size: clamp(20px, 4.6vw, 26px); line-height: 1.7; color: var(--text);
}
.hero .sub { margin: 0; color: var(--muted); max-width: 32em; }
.soon {
  display: inline-block; margin-top: 32px; padding: 6px 16px;
  border: 1px solid var(--faint); border-radius: 999px;
  color: var(--muted); font-size: 13px; letter-spacing: 0.08em;
}

/* 海與木筏 */
.sea { position: absolute; left: 0; right: 0; bottom: 0; height: 200px; pointer-events: none; }
.wave { position: absolute; left: 0; width: 200%; height: 100%; bottom: 0; }
.wave svg { width: 100%; height: 100%; display: block; }
.wave.back { bottom: 18px; opacity: .9; animation: drift 38s linear infinite; }
.wave.front { animation: drift 26s linear infinite reverse; }
@keyframes drift { from { transform: translateX(0); } to { transform: translateX(-50%); } }

.raft {
  position: absolute; left: 50%; bottom: 96px; width: 132px; margin-left: -66px;
  animation: bob 6s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(6px) rotate(1.5deg); }
}
.lamp-glow {
  position: absolute; left: 78px; top: -29px; width: 70px; height: 70px; border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 183, 106, 0.35), transparent 65%);
  animation: glow 4.5s ease-in-out infinite alternate;
}
@keyframes glow { from { opacity: .55; } to { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  .wave, .raft, .lamp-glow, .stars::after { animation: none !important; }
}

/* ---------- 內文 ---------- */
main { background: var(--deep); }
main.after-sea { background: linear-gradient(180deg, #10294a 0, var(--deep) 260px); }
.page { max-width: 720px; margin: 0 auto; padding: 72px 20px 40px; }
.page.top { padding-top: 104px; }
.after-sea .page + .page { padding-top: 8px; }

.eyebrow { margin: 0 0 8px; color: var(--muted); font-size: 13px; letter-spacing: 0.14em; }
h1.title, h2.section {
  font-family: var(--serif); font-weight: 500; color: var(--moon); letter-spacing: 0.06em;
}
h1.title { margin: 0 0 8px; font-size: clamp(28px, 6vw, 38px); line-height: 1.4; }
h2.section { margin: 0 0 18px; font-size: 24px; }
.meta { margin: 0 0 40px; color: var(--muted); font-size: 14px; }

.page h2 {
  margin: 52px 0 14px; padding-top: 22px; border-top: 1px solid var(--faint);
  font-family: var(--serif); font-weight: 500; font-size: 20px; color: var(--moon); letter-spacing: 0.04em;
}
.page h3 { margin: 28px 0 8px; font-size: 16px; color: var(--moon); font-weight: 600; }
.page p, .page li { color: var(--text); }
.page ul, .page ol { padding-left: 1.3em; margin: 10px 0 16px; }
.page li { margin: 6px 0; }
.page li::marker { color: var(--lamp); }
.page strong { color: var(--moon); font-weight: 600; }
.lead { font-size: 17px; }
.note { color: var(--muted); font-size: 14px; }

.table { width: 100%; border-collapse: collapse; margin: 14px 0 8px; font-size: 15px; }
.table th, .table td { text-align: left; vertical-align: top; padding: 12px 10px; border-bottom: 1px solid var(--faint); }
.table th { color: var(--muted); font-weight: 500; font-size: 13px; letter-spacing: 0.08em; }
.table td:first-child { color: var(--moon); width: 42%; }
@media (max-width: 560px) {
  .table thead { display: none; }
  .table, .table tbody, .table tr, .table td { display: block; width: 100% !important; }
  .table tr { padding: 12px 0; border-bottom: 1px solid var(--faint); }
  .table td { border: 0; padding: 2px 0; }
  .table td:last-child { color: var(--muted); }
}

/* 首頁的三個特點 */
.page .promises { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 28px 0 8px; padding: 0; list-style: none; }
.page .promises li {
  margin: 0; padding: 20px 18px; border: 1px solid var(--faint); border-radius: 14px; background: var(--card);
  font-family: var(--serif); color: var(--moon); line-height: 1.6;
}
.page .promises li::marker { content: none; }
@media (max-width: 640px) { .page .promises { grid-template-columns: 1fr; } }

.story p { font-family: var(--serif); font-size: 17px; line-height: 2.05; margin: 0 0 18px; }
:lang(en) .story p, .story p:lang(en) { line-height: 1.8; }

/* 卡片連結（支援、刪除、隱私） */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 22px; }
@media (max-width: 640px) { .cards { grid-template-columns: 1fr; } }
.card {
  display: block; padding: 20px 18px; border: 1px solid var(--faint); border-radius: 14px;
  background: var(--card); color: var(--text); text-decoration: none; transition: border-color .2s, transform .2s;
}
.card:hover { border-color: rgba(242, 183, 106, 0.5); color: var(--text); transform: translateY(-2px); }
.card b { display: block; margin-bottom: 4px; color: var(--moon); font-weight: 600; }
.card span { color: var(--muted); font-size: 14px; line-height: 1.6; display: block; }

/* 刪除頁的步驟 */
.box {
  margin: 20px 0; padding: 22px 22px 8px; border: 1px solid var(--faint); border-radius: 14px; background: var(--card);
}
.box h3 { margin-top: 0; }
.mail {
  display: inline-block; margin: 4px 0 10px; padding: 8px 14px; border-radius: 10px;
  background: rgba(242, 183, 106, 0.12); border: 1px solid rgba(242, 183, 106, 0.35);
  color: var(--lamp); font-weight: 600; text-decoration: none; word-break: break-all;
}
.mail:hover { background: rgba(242, 183, 106, 0.2); color: var(--moon); }

/* 目錄 */
.toc { margin: 0 0 8px; padding: 18px 20px; border: 1px solid var(--faint); border-radius: 14px; background: var(--card); }
.toc ol { margin: 0; padding-left: 1.2em; columns: 2; column-gap: 28px; font-size: 15px; }
.toc a { color: var(--text); text-decoration: none; }
.toc a:hover { color: var(--lamp); }
@media (max-width: 560px) { .toc ol { columns: 1; } }

/* ---------- 頁尾 ---------- */
footer { border-top: 1px solid var(--faint); background: var(--deep); }
.foot {
  max-width: 720px; margin: 0 auto; padding: 28px 20px 44px;
  display: flex; flex-wrap: wrap; gap: 10px 22px; justify-content: space-between;
  color: var(--muted); font-size: 13px;
}
.foot nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--moon); }