/* 给老年人用的界面：字大、对比强、按钮大、不用花哨动画 */

:root {
  --base: 20px;          /* 由「大/小」按钮调节 */
  --blue: #1a5fb4;
  --blue-dark: #14498c;
  --red: #c01c28;
  --red-bg: #fdf0ef;
  --amber: #b8860b;
  --amber-bg: #fdf8e8;
  --green: #26734d;
  --green-bg: #eef7f2;
  --ink: #1b1b1b;
  --ink-2: #5a5a5a;
  --line: #d8d8d8;
  --paper: #ffffff;
  --bg: #f4f5f7;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html { font-size: var(--base); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

.hidden { display: none !important; }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---------- 登记页 ---------- */

#screen-join {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(160deg, #1a5fb4, #14498c);
}

.join-box {
  width: 100%;
  max-width: 26rem;
  background: var(--paper);
  border-radius: 1rem;
  padding: 2rem 1.5rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .25);
}

.join-logo { display: block; width: 6rem; height: 6rem; margin: 0 auto; image-rendering: pixelated; }
.join-box h1 { margin: .5rem 0 .25rem; font-size: 2rem; text-align: center; }
.join-sub { margin: 0 0 1.5rem; text-align: center; color: var(--ink-2); font-size: .95rem; }

.field { display: block; margin-bottom: 1.2rem; }
.field > span { display: block; margin-bottom: .4rem; font-weight: 700; }

.field input {
  width: 100%;
  padding: .85rem 1rem;
  font-size: 1.15rem;
  font-family: inherit;
  border: 2px solid var(--line);
  border-radius: .6rem;
  background: #fff;
  color: var(--ink);
}
.field input:focus { outline: none; border-color: var(--blue); }

.role-picker { display: flex; gap: .75rem; }
.role-btn {
  flex: 1;
  padding: .9rem .5rem;
  border: 2px solid var(--line);
  border-radius: .6rem;
  background: #fff;
  text-align: center;
}
.role-btn b { display: block; font-size: 1.15rem; }
.role-btn small { color: var(--ink-2); font-size: .8rem; }
.role-btn.on { border-color: var(--blue); background: #eaf1fb; }

.big-btn {
  display: block;
  width: 100%;
  padding: 1rem;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: #fff;
  background: var(--blue);
  border-radius: .7rem;
}
.big-btn:active { background: var(--blue-dark); }
.big-btn[disabled] { background: #9bb4d6; }

.error-line { min-height: 1.5rem; margin: .75rem 0 0; color: var(--red); text-align: center; font-weight: 700; }

/* ---------- 顶栏 / 底栏 ---------- */

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: .6rem 1rem;
  padding-top: calc(.6rem + env(safe-area-inset-top));
  background: var(--blue); color: #fff;
}
.who { font-weight: 700; }
.topbar-tools { display: flex; gap: .5rem; }
.tool-btn {
  width: 2.2rem; height: 2.2rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, .2);
  color: #fff; font-weight: 700;
}
.tool-btn:active { background: rgba(255, 255, 255, .4); }

.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: flex;
  background: var(--paper);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.nav-btn {
  position: relative;
  flex: 1;
  padding: .5rem 0 .6rem;
  font-size: .85rem;
  color: var(--ink-2);
  display: flex; flex-direction: column; align-items: center; gap: .1rem;
}
.nav-btn span { font-size: 1.5rem; line-height: 1.2; }
.nav-btn.on { color: var(--blue); font-weight: 700; }
.dot {
  position: absolute; top: .4rem; right: 25%;
  width: .6rem; height: .6rem; border-radius: 50%; background: var(--red);
}

.tab { padding: 1rem 1rem 6rem; }
.tab-title { margin: .5rem 0 1rem; font-size: 1.3rem; }

/* ---------- 搜索区 ---------- */

.search-area { margin-top: .5rem; }
.search-row { display: flex; gap: .5rem; margin-bottom: .75rem; }

#q {
  flex: 1;
  min-width: 0;
  padding: 1rem;
  font-size: 1.25rem;
  font-family: inherit;
  border: 2px solid var(--line);
  border-radius: .7rem;
  background: #fff;
  color: var(--ink);
}
#q:focus { outline: none; border-color: var(--blue); }

.mic-btn {
  width: 3.6rem;
  font-size: 1.6rem;
  border: 2px solid var(--line);
  border-radius: .7rem;
  background: #fff;
}
.mic-btn.on { background: var(--red); border-color: var(--red); }

.suggest { margin-top: 1.75rem; }
.suggest-title { margin: 0 0 .6rem; color: var(--ink-2); font-weight: 700; }
.chips { display: flex; flex-wrap: wrap; gap: .6rem; }
.chip {
  padding: .6rem 1rem;
  font-size: 1rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2rem;
}
.chip:active { background: #eaf1fb; border-color: var(--blue); }

/* ---------- 加载 ---------- */

.loading { padding: 3rem 0; text-align: center; color: var(--ink-2); }
.spinner {
  width: 2.5rem; height: 2.5rem; margin: 0 auto 1rem;
  border: 4px solid var(--line); border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 结果 ---------- */

.result { margin-top: 1.25rem; }

.risk-banner {
  padding: 1rem 1.1rem;
  border-radius: .8rem;
  margin-bottom: 1rem;
  border-left: .5rem solid;
}
.risk-banner h2 { margin: 0 0 .4rem; font-size: 1.25rem; }
.risk-banner p { margin: 0; }
.risk-high { background: var(--red-bg); border-color: var(--red); color: #7a1119; }
.risk-medium { background: var(--amber-bg); border-color: var(--amber); color: #6b4e00; }
.risk-low { background: var(--green-bg); border-color: var(--green); color: #17452e; }

.card {
  background: var(--paper);
  border-radius: .8rem;
  padding: 1.1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--line);
}
.card h3 {
  margin: 0 0 .6rem;
  font-size: 1.05rem;
  color: var(--ink-2);
  font-weight: 700;
}
.summary-text { margin: 0; font-size: 1.2rem; line-height: 1.85; }

.points { margin: 0; padding-left: 1.3rem; }
.points li { margin-bottom: .5rem; font-size: 1.05rem; }

.advice-card { background: #eaf1fb; border-color: #b9cef0; }
.advice-card p { margin: 0; font-size: 1.1rem; font-weight: 500; }

/* 图片 */
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; }
.gallery img {
  width: 100%; height: 8rem; object-fit: cover;
  border-radius: .5rem; background: #eee; display: block;
}

/* 来源 */
.source {
  padding: .9rem 0;
  border-bottom: 1px solid var(--line);
}
.source:last-child { border-bottom: none; padding-bottom: 0; }
.source-head { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; margin-bottom: .3rem; }
.source-site { font-size: .9rem; color: var(--ink-2); }
.badge {
  font-size: .75rem; padding: .1rem .5rem; border-radius: 1rem; font-weight: 700;
}
.badge-official { background: var(--green-bg); color: var(--green); border: 1px solid var(--green); }
.badge-low { background: var(--amber-bg); color: var(--amber); border: 1px solid var(--amber); }

.source-title { margin: 0 0 .3rem; font-size: 1.1rem; font-weight: 700; color: var(--ink); }
.source-snippet { margin: 0; color: var(--ink-2); font-size: .95rem; }

.source-full {
  margin-top: .6rem;
  padding: .8rem;
  background: #fafafa;
  border-radius: .5rem;
  font-size: 1rem;
  line-height: 1.8;
  white-space: pre-wrap;
}
.link-row { display: flex; gap: .75rem; margin-top: .6rem; flex-wrap: wrap; }
.small-btn {
  padding: .45rem .9rem;
  font-size: .9rem;
  border: 1px solid var(--line);
  border-radius: 2rem;
  background: #fff;
}
.small-btn:active { background: #eee; }

/* 操作条 */
.actions { display: flex; gap: .75rem; margin: 1.25rem 0; }
.actions button {
  flex: 1;
  padding: .95rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: .7rem;
  background: var(--paper);
  border: 2px solid var(--blue);
  color: var(--blue);
}
.actions button.primary { background: var(--blue); color: #fff; }

/* 讨论 */
.msg { padding: .75rem 0; border-bottom: 1px solid var(--line); }
.msg:last-of-type { border-bottom: none; }
.msg-who { font-weight: 700; font-size: .9rem; color: var(--blue); }
.msg-time { font-size: .8rem; color: var(--ink-2); margin-left: .5rem; }
.msg-text { margin: .2rem 0 0; font-size: 1.05rem; }
.msg-form { display: flex; gap: .5rem; margin-top: .75rem; }
.msg-form input {
  flex: 1; min-width: 0; padding: .75rem;
  font-size: 1.05rem; font-family: inherit;
  border: 2px solid var(--line); border-radius: .6rem;
}
.msg-form button {
  padding: 0 1.1rem; font-weight: 700;
  background: var(--blue); color: #fff; border-radius: .6rem;
}

/* ---------- 列表（收到的 / 记录） ---------- */

.list-item {
  display: block; width: 100%; text-align: left;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: .35rem solid var(--line);
  border-radius: .7rem;
  padding: .9rem 1rem;
  margin-bottom: .75rem;
}
.list-item.risk-h { border-left-color: var(--red); }
.list-item.risk-m { border-left-color: var(--amber); }
.list-item.risk-l { border-left-color: var(--green); }
.list-item.unread { background: #fffbe8; }
.li-q { font-size: 1.15rem; font-weight: 700; margin: 0 0 .25rem; }
.li-meta { font-size: .85rem; color: var(--ink-2); }
.li-sum { margin: .4rem 0 0; color: var(--ink-2); font-size: .95rem; }

.empty { padding: 3rem 1rem; text-align: center; color: var(--ink-2); }

.scope-switch { display: flex; gap: .5rem; margin-bottom: 1rem; }
.scope-btn {
  padding: .5rem 1.2rem; border: 1px solid var(--line);
  border-radius: 2rem; background: #fff; font-size: .95rem;
}
.scope-btn.on { background: var(--blue); color: #fff; border-color: var(--blue); }

/* ---------- 转发面板 ---------- */

.sheet {
  position: fixed; inset: 0; z-index: 40;
  background: rgba(0, 0, 0, .45);
  display: flex; align-items: flex-end;
}
.sheet-panel {
  width: 100%;
  background: var(--paper);
  border-radius: 1rem 1rem 0 0;
  padding: 1.25rem 1.25rem calc(1.25rem + env(safe-area-inset-bottom));
}
.sheet-panel h3 { margin: 0 0 1rem; font-size: 1.25rem; text-align: center; }
.sheet-people { display: flex; flex-direction: column; gap: .6rem; margin-bottom: 1rem; }
.person-btn {
  padding: 1rem; font-size: 1.15rem; font-weight: 700;
  border: 2px solid var(--line); border-radius: .7rem; background: #fff;
  text-align: left;
}
.person-btn small { display: block; font-weight: 400; color: var(--ink-2); font-size: .85rem; }
.person-btn:active { border-color: var(--blue); background: #eaf1fb; }
.plain-btn { display: block; width: 100%; padding: .9rem; font-size: 1.05rem; color: var(--ink-2); }

/* ---------- 提示条 ---------- */

.toast {
  position: fixed; left: 50%; bottom: 6rem; transform: translateX(-50%);
  z-index: 50;
  background: rgba(0, 0, 0, .85); color: #fff;
  padding: .8rem 1.4rem; border-radius: 2rem;
  font-size: 1.05rem; max-width: 85vw; text-align: center;
}

/* 桌面上别把内容拉太宽 */
@media (min-width: 720px) {
  .tab { max-width: 42rem; margin: 0 auto; }
  .gallery { grid-template-columns: repeat(4, 1fr); }
}