/* ------------------------------------------------------------
   留言板 — 淡色溫暖風格
   Type: "Zen Maru Gothic" 標題（圓潤手寫感）+ "Noto Sans TC" 內文
   Color: 奶油杏色底 / 蜂蜜橘主色 / 鼠尾草綠點綴 / 霧霾藍點綴
------------------------------------------------------------- */

@import url("https://fonts.googleapis.com/css2?family=Zen+Maru+Gothic:wght@500;700&family=Noto+Sans+TC:wght@400;500;700&display=swap");

:root{
  --bg: #FBF3E7;
  --bg-soft: #F5E8D6;
  --card: #FFFDF9;
  --ink: #4A3728;
  --ink-soft: #8A7461;
  --ink-faint: #B3A08D;

  --honey: #E2934C;
  --honey-dark: #C97A34;
  --honey-tint: #F7DFBB;

  --sage: #8FA37B;
  --sage-tint: #E3EAD9;

  --sky: #8FB0BE;
  --sky-tint: #DEEBEF;

  --coral: #E08975;
  --coral-tint: #F7DDD3;

  --border: #ECDBC3;
  --shadow: 20px 24px 0 -14px rgba(201, 122, 52, 0.10);

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

*{ box-sizing: border-box; }

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

body{
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(680px 420px at 12% -8%, var(--sky-tint) 0%, transparent 60%),
    radial-gradient(620px 420px at 105% 8%, var(--coral-tint) 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: no-preference){
  .wave{ animation: wave 2.6s ease-in-out infinite; transform-origin: 78% 78%; }
}
@keyframes wave{
  0%, 100% { transform: rotate(0deg); }
  15% { transform: rotate(14deg); }
  30% { transform: rotate(-8deg); }
  45% { transform: rotate(14deg); }
  60% { transform: rotate(-4deg); }
  75%, 100% { transform: rotate(0deg); }
}

.shell{
  max-width: 640px;
  margin: 0 auto;
  padding: 56px 20px 40px;
}

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

.hero{
  text-align: center;
  margin-bottom: 40px;
}

.hero-art{
  width: 84px;
  height: auto;
  margin: 0 auto 14px;
  display: block;
}

.eyebrow{
  display: block;
  margin: 0 auto 16px;
  max-width: 26ch;
  color: var(--honey-dark);
  font-family: "Zen Maru Gothic", "Noto Sans TC", sans-serif;
  font-weight: 700;
  font-size: clamp(19px, 4.6vw, 25px);
  line-height: 1.5;
}

.hero h1{
  font-family: "Zen Maru Gothic", "Noto Sans TC", sans-serif;
  font-weight: 700;
  font-size: clamp(28px, 6vw, 38px);
  margin: 0 0 10px;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.hero > p:last-child{
  margin: 0 auto;
  max-width: 32ch;
  color: var(--ink-soft);
  font-size: 15.5px;
}

/* ---------- Cards ---------- */

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 30px 28px;
}

.compose{ margin-bottom: 36px; }

.compose h2{
  font-family: "Zen Maru Gothic", "Noto Sans TC", sans-serif;
  font-size: 19px;
  font-weight: 500;
  margin: 0 0 22px;
  color: var(--ink);
}

.notice{
  background: var(--sage-tint);
  border: 1px solid #D9E4CB;
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin-bottom: 24px;
}

.notice-title{
  margin: 0 0 6px;
  font-family: "Zen Maru Gothic", "Noto Sans TC", sans-serif;
  font-weight: 700;
  font-size: 14.5px;
  color: #5C7048;
}

.notice p:not(.notice-title):not(.notice-sign){
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: #5C7048;
}

.notice-sign{
  margin: 10px 0 0;
  text-align: right;
  font-size: 12.5px;
  font-style: italic;
  color: #6E8459;
}

/* ---------- Form ---------- */

#message-form{
  display: flex;
  flex-direction: column;
  gap: 18px;
}

#message-form label{
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

#message-form label span{
  font-weight: 400;
  color: var(--ink-faint);
  font-size: 12.5px;
}

#message-form input,
#message-form textarea{
  font: inherit;
  font-family: "Noto Sans TC", sans-serif;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: #FEFBF5;
  color: var(--ink);
  resize: vertical;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

#message-form input::placeholder,
#message-form textarea::placeholder{
  color: var(--ink-faint);
}

#message-form input:focus,
#message-form textarea:focus{
  outline: none;
  border-color: var(--honey);
  box-shadow: 0 0 0 4px var(--honey-tint);
}

.website{
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.form-footer{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 4px;
}

#form-status{
  margin: 0;
  font-size: 13.5px;
  color: var(--sage);
  min-height: 1.4em;
}

#form-status[data-state="error"]{ color: var(--coral); }

button{
  font-family: inherit;
  cursor: pointer;
}

#submit-button{
  flex: none;
  border: none;
  background: var(--honey);
  color: #FFF9F0;
  font-size: 15px;
  font-weight: 500;
  padding: 12px 26px;
  border-radius: 999px;
  box-shadow: 0 6px 0 -2px var(--honey-dark);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

#submit-button:hover{
  transform: translateY(-2px);
  box-shadow: 0 8px 0 -2px var(--honey-dark);
}

#submit-button:active{
  transform: translateY(1px);
  box-shadow: 0 3px 0 -2px var(--honey-dark);
}

#submit-button:disabled{
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 6px 0 -2px var(--honey-dark);
}

/* ---------- Messages ---------- */

.section-title{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
}

.section-title h2{
  font-family: "Zen Maru Gothic", "Noto Sans TC", sans-serif;
  font-size: 18px;
  font-weight: 500;
  margin: 0;
  color: var(--ink);
}

.text-button{
  border: none;
  background: none;
  color: var(--honey-dark);
  font-size: 13.5px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 8px;
  transition: background 0.15s ease;
}

.text-button:hover{ background: var(--honey-tint); }

/* 由上而下的橫式排版，每則留言一列，最新的留言排在最上方 */
#message-list{
  display: flex;
  flex-direction: column;
  max-height: 64vh;
  padding: 10px 20px;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
}

.empty{
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--ink-faint);
  font-size: 14px;
  margin: 0;
}

/* generic message item classes, in case app.js renders these */
.message-item, .message-card{
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--border);
}

.message-item:last-of-type, .message-card:last-of-type{
  border-bottom: none;
}

.avatar, .avatar-badge{
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 700;
  font-size: 13.5px;
  color: var(--honey-dark);
  background: var(--honey-tint);
}

.message-item:nth-of-type(3n+2) .avatar,
.message-card:nth-of-type(3n+2) .avatar-badge{
  background: var(--sage-tint);
  color: #5C7048;
}

.message-item:nth-of-type(3n) .avatar,
.message-card:nth-of-type(3n) .avatar-badge{
  background: var(--sky-tint);
  color: #4A6874;
}

.message-body{ min-width: 0; flex: 1; }

.message-header{
  display: flex;
  flex-direction: row;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 6px;
}

.message-name{
  font-weight: 700;
  font-size: 14.5px;
  color: var(--ink);
}

.message-date{
  font-size: 12px;
  color: var(--ink-faint);
}

.message-text{
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-soft);
  overflow-wrap: anywhere;
}

.load-more{
  display: block;
  margin: 18px auto 0;
  border: 1.5px solid var(--border);
  background: var(--card);
  color: var(--ink-soft);
  font-size: 13.5px;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 999px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.load-more:hover{
  border-color: var(--honey);
  color: var(--honey-dark);
}

/* ---------- Footer ---------- */

footer{
  text-align: center;
  color: var(--ink-faint);
  font-size: 12.5px;
  padding: 32px 20px 12px;
}

/* ---------- Accessibility ---------- */

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible{
  outline: 2.5px solid var(--honey);
  outline-offset: 2px;
}

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

@media (max-width: 480px){
  .shell{ padding: 40px 16px 32px; }
  .card{ padding: 24px 20px; }
  .form-footer{ flex-direction: column; align-items: stretch; }
  #submit-button{ width: 100%; text-align: center; }
  #message-list{ max-height: 56vh; padding: 6px 14px; }
}