/* 纸鸢 Kite —— 明亮、轻快、圆角卡片 */
:root{
  --sky:#4FA8FF; --sky-d:#2E7CF6; --paper:#FFF8EF; --ink:#20303F; --ink-2:#6B7C8C;
  --line:#E6EDF4; --card:#FFFFFF; --warm:#FF8A3D; --gold:#FFC94D; --grass:#7ED0A0;
  --shadow:0 6px 20px rgba(46,124,246,.13); --radius:20px;
  --safe-b:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--paper);overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
#sky{position:fixed;inset:0;z-index:0;background:linear-gradient(180deg,#E9F4FF 0%,#F6FBFF 32%,#FFF8EF 100%)}
.cloud{position:absolute;background:#fff;border-radius:60px;opacity:.75;filter:blur(.2px)}
.c1{width:150px;height:46px;top:8%;left:-40px;animation:drift 34s linear infinite}
.c2{width:96px;height:34px;top:22%;left:-80px;animation:drift 46s linear infinite 6s}
.c3{width:180px;height:52px;top:44%;left:-160px;animation:drift 60s linear infinite 14s;opacity:.5}
@keyframes drift{to{transform:translateX(130vw)}}

.screen{position:fixed;inset:0;z-index:2;display:flex;flex-direction:column}
.hidden{display:none !important}

/* ---------- 登录 ---------- */
.auth-wrap{margin:auto;width:min(92vw,420px);padding:24px 0;overflow-y:auto}
.brand{text-align:center;margin-bottom:18px}
.brand-kite{width:88px;height:88px;animation:float 4.5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-9px) rotate(3deg)}}
.brand h1{margin:6px 0 2px;font-size:34px;letter-spacing:6px;color:var(--sky-d)}
.slogan{margin:0;color:var(--ink-2);font-size:14px;letter-spacing:3px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.auth-card{padding:14px}
.tabs{display:flex;gap:6px;background:#F1F6FC;border-radius:14px;padding:4px;margin-bottom:14px}
.tab{flex:1;border:0;background:transparent;padding:9px 0;border-radius:11px;font-size:15px;color:var(--ink-2);font-weight:600}
.tab.active{background:#fff;color:var(--sky-d);box-shadow:0 2px 8px rgba(46,124,246,.16)}
.pane{display:none}.pane.active{display:block}
.field{display:block;margin-bottom:12px}
.field span{display:block;font-size:12px;color:var(--ink-2);margin:0 0 6px 4px}
.field input{
  width:100%;border:1.5px solid var(--line);background:#FBFDFF;border-radius:14px;
  padding:12px 14px;font-size:16px;color:var(--ink);outline:none;transition:.15s
}
.field input:focus{border-color:var(--sky);background:#fff}
.btn{
  border:0;border-radius:14px;padding:12px 16px;font-size:15px;font-weight:600;cursor:pointer;
  background:#F1F6FC;color:var(--ink);transition:.15s;
}
.btn.primary{background:linear-gradient(135deg,var(--sky),var(--sky-d));color:#fff;box-shadow:0 6px 16px rgba(46,124,246,.28)}
.btn.primary:active{transform:translateY(1px)}
.btn.ghost{background:#fff;border:1.5px solid var(--sky);color:var(--sky-d)}
.btn.danger{background:#FFF0F0;color:#E2544C}
.btn.block{width:100%;margin-top:12px}
.btn.small{padding:8px 14px;font-size:13px;border-radius:11px}
.hint{min-height:20px;margin:10px 4px 0;font-size:13px;color:#E2544C;text-align:center}
.foot{text-align:center;color:var(--ink-2);font-size:12px;margin-top:14px}

/* ---------- 主界面 ---------- */
#topbar{
  position:relative;z-index:3;display:flex;align-items:center;justify-content:space-between;
  padding:calc(env(safe-area-inset-top,0px) + 12px) 16px 12px;background:rgba(255,255,255,.86);
  backdrop-filter:blur(10px);border-bottom:1px solid rgba(230,237,244,.9)
}
#tb-title{font-size:19px;font-weight:700;letter-spacing:2px}
.icon-btn{border:0;background:#F1F6FC;width:38px;height:38px;border-radius:12px;color:var(--sky-d);display:grid;place-items:center;cursor:pointer}
.icon-btn:active{transform:scale(.94)}
#views{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:12px 12px calc(78px + var(--safe-b))}
.view{display:none}.view.active{display:block}
.list{display:flex;flex-direction:column;gap:10px}
.item{
  display:flex;align-items:center;gap:12px;background:#fff;border-radius:var(--radius);
  padding:12px 14px;box-shadow:0 3px 12px rgba(46,124,246,.08);cursor:pointer;transition:.15s
}
.item:active{transform:scale(.985)}
.avatar{
  width:44px;height:44px;border-radius:15px;display:grid;place-items:center;color:#fff;
  font-weight:700;font-size:16px;flex:0 0 44px;position:relative
}
.avatar.sm{width:36px;height:36px;flex:0 0 36px;border-radius:12px;font-size:14px}
.avatar.lg{width:58px;height:58px;flex:0 0 58px;border-radius:19px;font-size:21px}
.online-dot{position:absolute;right:-2px;bottom:-2px;width:12px;height:12px;border-radius:50%;background:var(--grass);border:2px solid #fff}
.item-mid{flex:1;min-width:0}
.item-title{font-weight:600;font-size:16px;display:flex;align-items:center;gap:6px}
.item-sub{font-size:13px;color:var(--ink-2);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.item-right{text-align:right;font-size:12px;color:var(--ink-2);flex:0 0 auto}
.badge{
  display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;border-radius:10px;
  background:#FF4D4F;color:#fff;font-size:12px;font-weight:700;margin-top:4px
}
.empty{text-align:center;color:var(--ink-2);padding:56px 20px}
.empty p{margin:12px 0}
.req-box{background:#FFF6E8;border-radius:var(--radius);padding:12px 14px;margin-bottom:12px}
.req-box h4{margin:0 0 8px;font-size:14px;color:#B96B14}
.req-row{display:flex;align-items:center;gap:10px;padding:8px 0;border-top:1px dashed #F3DDBE}
.req-row:first-of-type{border-top:0}
.req-name{flex:1;font-weight:600;font-size:15px}
.me-card{margin-bottom:12px}
.me-top{display:flex;align-items:center;gap:14px}
.me-name{font-size:19px;font-weight:700}
.me-sub{color:var(--ink-2);font-size:13px}
.me-bio{color:var(--ink-2);font-size:13px;margin:12px 0 0}
.row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.sub{font-size:12px;color:var(--ink-2);margin-top:3px}
#tabbar{
  position:absolute;left:0;right:0;bottom:0;z-index:4;display:flex;background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);border-top:1px solid var(--line);padding-bottom:var(--safe-b)
}
.tab-item{
  flex:1;border:0;background:transparent;padding:9px 0 8px;display:flex;flex-direction:column;
  align-items:center;gap:2px;font-size:12px;color:var(--ink-2);cursor:pointer;position:relative
}
.tab-item.active{color:var(--sky-d);font-weight:700}
.ti-ico{font-size:20px;line-height:1}
.dot{display:none;position:absolute;top:4px;right:calc(50% - 20px);width:8px;height:8px;border-radius:50%;background:#FF4D4F}
.dot.on{display:block}

/* ---------- 聊天 ---------- */
#chatbar{
  display:flex;align-items:center;gap:10px;padding:calc(env(safe-area-inset-top,0px) + 10px) 12px 10px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:3
}
.chat-peer{display:flex;align-items:center;gap:10px}
.chat-peer .sub{font-size:12px}
#msg-list{
  flex:1;overflow-y:auto;padding:16px 14px 8px;display:flex;flex-direction:column;gap:10px;
  background:linear-gradient(180deg,rgba(233,244,255,.5),rgba(255,248,239,.5))
}
.msg{max-width:76%;padding:10px 14px;border-radius:18px;font-size:15px;line-height:1.45;word-break:break-word;position:relative;animation:pop .18s ease-out}
@keyframes pop{from{opacity:0;transform:translateY(6px) scale(.98)}to{opacity:1;transform:none}}
.msg.mine{align-self:flex-end;background:linear-gradient(135deg,var(--sky),var(--sky-d));color:#fff;border-bottom-right-radius:6px}
.msg.theirs{align-self:flex-start;background:#fff;color:var(--ink);border-bottom-left-radius:6px;box-shadow:0 3px 10px rgba(46,124,246,.08)}
.msg .time{display:block;font-size:11px;opacity:.65;margin-top:4px;text-align:right}
.msg.pending{opacity:.6}
.msg.image{padding:5px}
.msg .msg-img{display:block;max-width:180px;max-height:240px;border-radius:12px;cursor:zoom-in}
.msg .msg-audio{cursor:pointer;user-select:none}
.day{align-self:center;font-size:12px;color:var(--ink-2);background:rgba(255,255,255,.7);padding:3px 10px;border-radius:10px;margin:6px 0}
#composer{
  display:flex;gap:8px;padding:10px 12px calc(10px + var(--safe-b));background:rgba(255,255,255,.94);
  border-top:1px solid var(--line);z-index:3
}
#msg-input{flex:1;border:1.5px solid var(--line);background:#FBFDFF;border-radius:16px;padding:11px 14px;font-size:16px;outline:none}
#msg-input:focus{border-color:var(--sky)}
#send-btn{border:0;width:46px;height:46px;border-radius:16px;background:linear-gradient(135deg,var(--sky),var(--sky-d));color:#fff;display:grid;place-items:center;cursor:pointer;box-shadow:0 6px 14px rgba(46,124,246,.28)}
#send-btn:active{transform:scale(.94)}
.typing{align-self:flex-start;font-size:12px;color:var(--ink-2);padding-left:6px}

/* ---------- 弹层 ---------- */
.sheet{position:fixed;inset:0;z-index:20}
.sheet-mask{position:absolute;inset:0;background:rgba(20,32,45,.42);animation:fade .18s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.sheet-body{
  position:absolute;left:0;right:0;bottom:0;background:var(--paper);border-radius:24px 24px 0 0;
  padding:14px 16px calc(20px + var(--safe-b));max-height:82vh;overflow-y:auto;animation:up .22s ease-out
}
@keyframes up{from{transform:translateY(24px);opacity:.6}to{transform:none;opacity:1}}
.sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.search-bar{display:flex;gap:8px;margin-bottom:12px}
.search-bar input{flex:1;border:1.5px solid var(--line);background:#fff;border-radius:14px;padding:11px 14px;font-size:16px;outline:none}
.sheet h4{margin:14px 0 8px;font-size:14px;color:var(--ink-2)}

/* ---------- Toast ---------- */
#toast-box{position:fixed;left:0;right:0;top:calc(env(safe-area-inset-top,0px) + 8px);z-index:60;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{
  pointer-events:auto;max-width:88vw;background:rgba(255,255,255,.97);border-radius:16px;
  box-shadow:0 8px 24px rgba(20,32,45,.18);padding:10px 14px;display:flex;gap:10px;align-items:center;
  animation:drop .22s ease-out;cursor:pointer
}
@keyframes drop{from{transform:translateY(-14px);opacity:0}to{transform:none;opacity:1}}
.toast .t-title{font-weight:700;font-size:14px}
.toast .t-body{font-size:13px;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:56vw}