/* zhizhi · 温暖手账风 —— 零外部依赖，纯本地 */
:root {
  color-scheme: light;
  --bg: #fdf6ec;            /* 奶油米 */
  --card: #fffef9;          /* 暖白卡片 */
  --accent: #c2410c;        /* 暖橙 */
  --brown: #8a5a33;         /* 棕 */
  --ink: #3d3d3a;           /* 暖黑正文 */
  --muted: #a0917f;         /* 灰棕辅助 */
  --line: #f0e3d0;          /* 分隔线 */
  --shadow: 0 2px 10px rgba(138, 90, 51, .09);
  --shadow-hover: 0 5px 18px rgba(138, 90, 51, .16);
  --radius: 14px;
  --hand: "Kaiti SC", "KaiTi", "STKaiti", "楷体", "FangSong", serif;
  --sans: system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  background-image: radial-gradient(rgba(194, 65, 12, .04) 1px, transparent 1px);
  background-size: 22px 22px;   /* 极淡点纹，手账纸感 */
}

/* ---- 首页标题区 ---- */
header {
  padding: 2.2rem 1.5rem 1.4rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: .8rem;
}
.site-title h1 {
  margin: 0;
  font-family: var(--hand);
  font-size: 2rem;
  font-weight: 600;
  color: var(--brown);
  letter-spacing: .06em;
}
.site-title .tagline {
  margin: .35rem 0 0;
  color: var(--muted);
  font-size: .92rem;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: .55rem 1.3rem;
  border-radius: 999px;
  font: inherit;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(194, 65, 12, .25);
  transition: background .15s, box-shadow .15s;
}
.btn:hover { background: #a83508; box-shadow: 0 4px 12px rgba(194, 65, 12, .3); }
.btn.ghost { background: transparent; color: var(--brown); border: 1.5px solid var(--brown);
             box-shadow: none; }
.btn.ghost:hover { background: rgba(138, 90, 51, .07); }
button { font: inherit; cursor: pointer; border: 0; }
button[type="submit"] {
  background: var(--accent); color: #fff;
  padding: .6rem 1.6rem; border-radius: 999px;
  box-shadow: 0 2px 8px rgba(194, 65, 12, .25);
  transition: background .15s;
}
button[type="submit"]:hover { background: #a83508; }

/* ---- 时间轴主体 ---- */
main { max-width: 760px; margin: 0 auto; padding: .5rem 1.2rem 3rem; }

/* 轴线 */
#timeline { position: relative; padding-left: 2.1rem; }
#timeline::before {
  content: "";
  position: absolute;
  left: .6rem; top: .4rem; bottom: .5rem;
  width: 2px;
  background: linear-gradient(var(--line), var(--line) 92%, transparent);
}

/* 年份色块 */
section h2 {
  display: inline-block;
  margin: 1.5rem 0 .9rem;
  padding: .18rem .9rem;
  border: 1.5px solid var(--brown);
  border-radius: 999px;
  color: var(--brown);
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .12em;
  background: transparent;
}
section:first-of-type h2 { margin-top: .4rem; }

/* 卡片 + 节点 */
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.05rem 1.25rem;
  margin-bottom: 1.15rem;
  transition: box-shadow .18s, transform .18s;
}
.card:hover { box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.card::before {            /* 轴线上的节点圆点 */
  content: "";
  position: absolute;
  left: calc(-2.1rem + .6rem - .42rem);
  top: 1.35rem;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--brown);
  box-shadow: 0 0 0 3px var(--bg);
}
.card.milestone { border-left: 4px solid var(--accent); }
.card.milestone::before { border-color: var(--accent); background: var(--accent); }

.card h3 {
  margin: 0 0 .35rem;
  font-size: 1.08rem;
  color: var(--ink);
}
.card .date-badge {
  display: inline-block;
  font-family: var(--hand);
  font-size: .82rem;
  color: var(--accent);
  background: rgba(194, 65, 12, .08);
  border-radius: 999px;
  padding: .08rem .6rem;
  margin-bottom: .45rem;
}
.place { color: var(--muted); margin: .25rem 0; font-size: .9rem; }
.story { margin: .35rem 0; white-space: pre-line; }
.quote {
  color: var(--accent);
  font-family: var(--hand);
  font-size: 1.02rem;
  font-style: italic;
  margin: .35rem 0;
  padding-left: .7rem;
  border-left: 3px solid var(--line);
}

/* 媒体 */
.card img, .card video { max-width: 100%; border-radius: 10px; margin-top: .55rem; display: block; }
.card audio { width: 100%; margin-top: .55rem; }

/* 标签小药丸 */
.tags { margin: .5rem 0 0; }
.tags .tag {
  display: inline-block;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--brown);
  border-radius: 999px;
  font-size: .78rem;
  padding: .05rem .55rem;
  margin-right: .35rem;
}

/* ---- 空态页 ---- */
.empty { text-align: center; padding: 3.5rem 0 2rem; }
.empty-emoji { font-size: 3rem; }
.empty-title { font-family: var(--hand); font-size: 1.5rem; color: var(--brown); margin: .6rem 0 .2rem; }
.empty-sub { color: var(--muted); margin: 0 0 1.6rem; }

/* ---- 录入表单 ---- */
.form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem 1.6rem;
}
form label { display: block; margin-bottom: 1.05rem; font-size: .92rem; color: var(--brown); }
form label > span { display: block; margin-bottom: .25rem; }
form input, form select, form textarea {
  width: 100%; padding: .55rem .7rem;
  border: 1px solid #e5d8c2; border-radius: 9px;
  font: inherit; background: #fff; color: var(--ink);
}
form input:focus, form select:focus, form textarea:focus {
  outline: 2px solid rgba(194, 65, 12, .25); border-color: var(--accent);
}
#dropzone {
  border: 2px dashed #d8c8ac; border-radius: 12px;
  padding: 1.5rem; text-align: center;
  color: var(--muted); cursor: pointer;
  transition: border-color .15s, color .15s;
}
#dropzone.over { border-color: var(--accent); color: var(--accent); background: rgba(194, 65, 12, .05); }
#status { color: var(--muted); margin-top: .7rem; }