/* ============================================================
   Telegram iOS 风格 · 设计令牌 & 基础层
   ============================================================ */

:root{
  /* 品牌与强调色（Telegram iOS light accent） */
  --accent:        #229ED9;
  --accent-600:    #1E96C9;
  --accent-soft:   rgba(34,158,217,.12);
  --accent-line:   rgba(34,158,217,.28);
  --ios-blue:      #007AFF;

  /* 背景与容器 */
  --bg:            #FFFFFF;
  --bg-grouped:    #EFEFF4;
  --card:          #FFFFFF;
  --card-inset:    #F7F7F9;
  --fill:          rgba(255, 255, 255, 0.9);
  --fill-2:        rgba(116,116,128,.14);

  /* 文本 */
  --text:          #000000;
  --text-2:        #8E8E93;
  --text-3:        #B0B0B5;

  /* 分隔线 */
  --sep:           rgba(60,60,67,.12);
  --sep-strong:    rgba(60,60,67,.22);

  /* iOS 系统色 */
  --green:#34C759; --red:#FF3B30; --orange:#FF9500; --yellow:#FFCC00;
  --pink:#FF2D55; --purple:#AF52DE; --teal:#5AC8FA; --indigo:#5856D6;

  /* 尺寸 */
  --nav-h:52px;
  --tab-h:62px;
  --radius:14px;
  --radius-lg:18px;
  --safe-t:env(safe-area-inset-top,0px);
  --safe-b:env(safe-area-inset-bottom,0px);
  --shadow:0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
  --shadow-lg:0 12px 40px rgba(0,0,0,.12);

  /* 液态玻璃 */
  --glass-bg:rgba(255,255,255,.62);
  --glass-brd:rgba(255,255,255,.75);
  --glass-blur:blur(26px) saturate(180%);
}

[data-theme="dark"]{
  --accent:      #50A8E8;
  --accent-600:  #3F9AD8;
  --accent-soft: rgba(80,168,232,.16);
  --accent-line: rgba(80,168,232,.32);
  --ios-blue:    #0A84FF;

  --bg:          #17212B;
  --bg-grouped:  #0F1620;
  --card:        #1C2733;
  --card-inset:  #182533;
  --fill:        rgb(42 55 72);
  --fill-2:      rgba(255,255,255,.14);

  --text:        #FFFFFF;
  --text-2:      #7D8B99;
  --text-3:      #5B6B7B;

  --sep:         rgba(255,255,255,.10);
  --sep-strong:  rgba(255,255,255,.18);

  --green:#30D158; --red:#FF453A; --orange:#FF9F0A; --yellow:#FFD60A;
  --pink:#FF375F; --purple:#BF5AF2; --teal:#64D2FF; --indigo:#7D7AFF;

  --glass-bg:rgba(28,39,51,.62);
  --glass-brd:rgba(255,255,255,.10);
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
}

/* ---------------- Reset ---------------- */
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
/* SVG 兜底尺寸：无显式约束的图标跟随字号（:where 零特异性，任意类选择器可覆盖） */
:where(svg){width:1em;height:1em;flex-shrink:0;vertical-align:-.125em}
body{
  font-family:-apple-system,BlinkMacSystemFont,'SF Pro Text','Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:15px;line-height:1.45;color:var(--text);
  background:var(--bg-grouped);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{background:none;border:none;cursor:pointer}
a{color:var(--accent);text-decoration:none}
input,textarea{outline:none;border:none;background:none}
ul,ol{list-style:none}
:focus-visible{font-weight: bold;}

/* ---------------- 手机容器 ---------------- */
.phone{
  max-width:480px;margin:0 auto;min-height:100vh;
  background:var(--bg-grouped);
  position:relative;overflow-x:hidden;
}
.phone::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(420px 300px at 110% -4%, var(--accent-soft), transparent 70%),
    radial-gradient(360px 260px at -12% 12%, var(--accent-soft), transparent 70%);
}
.view{position:relative;z-index:1;padding-bottom:calc(var(--tab-h) + 34px + var(--safe-b))}

/* ---------------- 顶部导航栏 ---------------- */
.navbar{
  position:sticky;top:0;z-index:80;
  padding-top:var(--safe-t);
  background:var(--glass-bg);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border-bottom:1px solid var(--sep);
}
.navbar-inner{
  height:var(--nav-h);display:flex;align-items:center;
  padding:0 8px;position:relative;
}
.navbar-side{
  flex:1;display:flex;align-items:center;min-width:64px;z-index:2;
}
.navbar-side.right{justify-content:flex-end}
.navbar-title{
  position:absolute;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:6px;
  font-size:17px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;
}
.brand-mark{
  width:24px;height:24px;border-radius:7px;
  background:linear-gradient(160deg,var(--teal),var(--accent));color: #fff;
  display:grid;place-items:center;box-shadow:0 2px 8px rgba(34,158,217,.35);
}
.brand-mark svg{width:15px;height:15px;stroke:#fff;fill:none;stroke-width:2}
.brand-logo{max-height:28px;width:auto;vertical-align:middle;object-fit:contain}
.nav-btn{
  font-size:15px;font-weight:600;color:var(--accent);
  padding:6px 10px;border-radius:10px;transition:.18s;
}
.nav-btn:active{background:var(--fill-2)}
.nav-avatar{width:30px;height:30px;border-radius:50%;object-fit:cover;border:1px solid var(--sep)}
.icon-btn{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  color:var(--accent);transition:.18s;position:relative;
}
.icon-btn:active{background:var(--fill-2)}
.icon-btn svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}

/* iOS 大标题 */
.large-title{padding:2px 20px 6px}
.large-title h1{font-size:32px;font-weight:800;letter-spacing:-.6px}
.large-title p{font-size:13px;color:var(--text-2);margin-top:2px}

/* ---------------- 底部液态玻璃 Tab Bar ---------------- */
.tabbar{
  position:fixed;z-index:90;
  left:50%;transform:translateX(-50%);
  bottom:calc(12px + var(--safe-b));
  width:calc(100% - 24px);max-width:456px;height:var(--tab-h);
  display:flex;align-items:stretch;
  border-radius:30px;
  background:var(--glass-bg);
  backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--glass-brd);
  box-shadow:0 10px 34px rgba(0,0,0,.14), inset 0 1px 0 rgba(255,255,255,.55);
  overflow:visible;
}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  color:var(--text-2);transition:color .2s;position:relative;
}
.tab-item .ti-icon{
  width:23px;height:23px;fill:none;stroke:currentColor;
  stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s;
}
.tab-item .ti-label{font-size:10.5px;font-weight:600;letter-spacing:.1px;line-height:1}
.tab-item.active{color:var(--accent)}
.tab-item.active .ti-icon{transform:translateY(-1px) scale(1.06)}
.tab-item:active{opacity:.6}
.tab-badge{
  position:absolute;top:5px;left:calc(50% + 5px);
  min-width:16px;height:16px;padding:0 4px;border-radius:8px;
  background:var(--red);color:#fff;font-size:10px;font-weight:700;
  display:grid;place-items:center;border:2px solid var(--glass-bg);
}
/* 中央凸起发布按钮：圆绝对定位上凸，标签固定在栏内底部 */
.tab-item.fab{flex:0 0 64px;display:block}
.fab-circle{
  position:absolute;left:50%;top:-15px;transform:translateX(-50%);
  width:48px;height:48px;border-radius:50%;
  background:linear-gradient(165deg,var(--teal),var(--accent));
  display:grid;place-items:center;color:#fff;
  box-shadow:0 8px 20px rgba(34,158,217,.42), inset 0 2px 4px rgba(255,255,255,.35);
  transition:transform .2s;
}
.fab-circle svg{width:23px;height:23px;fill:none;stroke:#fff;stroke-width:2.3;stroke-linecap:round;stroke-linejoin:round}
.tab-item.fab .ti-label{
  position:absolute;left:0;right:0;bottom:9px;text-align:center;
  font-size:10px;font-weight:600;color:var(--text-2);
}
.tab-item.fab:active .fab-circle{transform:translateX(-50%) scale(.93)}

/* ---------------- 通用文本/工具类 ---------------- */
.muted{color:var(--text-2)}
.tiny{font-size:12px}
.small{font-size:13px}
.bold{font-weight:600}
.row{display:flex;align-items:center}
.between{display:flex;align-items:center;justify-content:space-between}
.grow{flex:1;min-width:0}
.ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.center{text-align:center}
.hidden{display:none !important}
.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt20{margin-top:20px}
.px20{padding-left:20px;padding-right:20px}

/* 分组容器（iOS inset grouped） */
.group{margin:16px 16px 0}
.group-title{
  font-size:12.5px;font-weight:600;color:var(--text-2);
  text-transform:uppercase;letter-spacing:.4px;margin:0 0 7px 16px;
}
.group-card{
  background:var(--card);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.group-footer{font-size:12px;color:var(--text-2);margin:7px 4px 0;line-height:1.45}

/* ---------------- 社区圈补充样式 ---------------- */
.row.wrap{flex-wrap:wrap}
.tag-chip{background:rgba(34,158,217,.12);color:var(--accent);cursor:pointer;border:0}
.tag-chip.on{background:var(--accent);color:#fff}
.gift-ico{width:22px;height:22px;border-radius:6px;object-fit:cover}
.post-avatar-link{cursor:pointer;flex-shrink:0}

/* 公开个人主页 */
.user-hero{position:relative;margin:12px 16px;border-radius:20px;overflow:hidden;color:#fff;padding:26px 20px;background-size:cover;background-position:center}
.uh-inner{position:relative;z-index:2;text-align:center}
.uh-avatar{width:82px;height:82px;border-radius:50%;object-fit:cover;border:3px solid rgba(255,255,255,.85);box-shadow:0 6px 18px rgba(0,0,0,.25)}
.uh-name{font-size:20px;font-weight:700;margin-top:10px}
.uh-level{font-size:12.5px;opacity:.9;margin-top:2px}
.uh-sign{font-size:13px;opacity:.92;margin-top:8px;line-height:1.5}
.uh-stats{display:flex;justify-content:center;gap:26px;margin-top:14px;font-size:12px;opacity:.95}
.uh-stats b{display:block;font-size:17px;font-weight:700}
.uh-gift{margin-top:14px;background:#fff;color:var(--accent);border:0;border-radius:20px;padding:7px 22px;font-weight:600}
.user-feed{padding-top:0}
.gift-row{display:flex;gap:12px;overflow-x:auto;padding:4px 16px 16px}
.gift-card{flex:0 0 96px;background:var(--card);border-radius:14px;padding:12px 8px;text-align:center;box-shadow:var(--shadow)}
.gift-card img{width:48px;height:48px;object-fit:contain;border-radius:10px}
.gift-name{font-size:12.5px;font-weight:600;margin-top:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gift-count{font-size:12px;color:var(--accent);font-weight:700}
.gift-coins{font-size:11px;color:var(--text-2)}

/* 编辑资料 */
/* 编辑资料弹窗美化 */
.ep-head{text-align:center;padding:2px 0 12px;background:linear-gradient(180deg,rgba(34,158,217,.09),rgba(34,158,217,0))}
.ep-grip{width:40px;height:4px;border-radius:3px;background:rgba(140,140,160,.32);margin:8px auto 10px}
.ep-title{font-size:18px;font-weight:800;color:var(--text);letter-spacing:.5px}
.ep-sub{font-size:12px;color:var(--text-3);margin-top:3px}
.hd-body.ep-body{padding-top:12px;background:linear-gradient(180deg,#eef4fb,rgba(238,244,251,0) 130px),var(--card)}
.ep-row{margin:12px 0}
.ep-row:last-child{margin-bottom:0}
.ep-label{font-size:12.5px;font-weight:600;color:var(--text-2);margin-bottom:7px;letter-spacing:.3px}
/* 分区块白卡片（衬在浅蓝渐变底上） */
.ep-section{background:var(--card);border:1px solid rgba(31,45,61,.06);border-radius:16px;padding:14px;box-shadow:0 2px 10px rgba(31,45,61,.05);margin-bottom:12px}
.ep-section:last-of-type{margin-bottom:0}
.ep-section-title{font-size:13.5px;font-weight:800;color:var(--text);margin-bottom:12px;display:flex;align-items:center;gap:7px}
.ep-section-title::before{content:'';width:4px;height:14px;border-radius:2px;background:linear-gradient(180deg,var(--accent),var(--accent-600))}
/* 输入控件：灰底衬托白卡片，聚焦转白 + 光晕 */
.ep-input,.ep-textarea{border:1.5px solid transparent;background:var(--fill);transition:border-color .2s,box-shadow .2s,background .2s}
.ep-input:focus,.ep-textarea:focus{outline:none;border-color:var(--accent);background:var(--card);box-shadow:0 0 0 3px rgba(34,158,217,.14)}
.ep-textarea{width:100%;border-radius:12px;padding:10px 12px;font-size:14px;color:var(--text);resize:none}
.ep-input{width:100%;height:42px;border-radius:12px;padding:0 12px;font-size:14px;color:var(--text)}
/* 头像 / 背景上传：等高双列，背景列自适应不溢出 */
.ep-grid2{display:flex;gap:14px;margin-bottom:12px}
.ep-upload{position:relative;display:flex;align-items:center;justify-content:center;width:84px;height:84px;border-radius:14px;border:1.5px dashed rgba(150,160,180,.55);background:var(--fill);overflow:hidden;cursor:pointer;flex:none}
.ep-upload::before{content:'＋';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--text-3);z-index:0}
.ep-upload.ep-bg{flex:1;min-width:0;width:auto;height:84px}
.ep-upload img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;display:block}
.ep-upload img[src=""]{display:none}
.ep-upload .ep-up-tag{position:absolute;left:50%;bottom:6px;transform:translateX(-50%);font-size:11px;color:#fff;background:rgba(0,0,0,.45);padding:2px 9px;border-radius:8px;backdrop-filter:blur(2px);pointer-events:none;z-index:2}
/* 保存按钮：渐变 + 投影 */
.ep-save{width:100%;min-height:48px;font-size:16px;font-weight:700;border-radius:14px;margin-top:2px;background:linear-gradient(135deg,var(--accent),var(--accent-600));box-shadow:0 6px 16px rgba(34,158,217,.28)}

/* 滑动验证 */
.slide-verify{position:relative;height:46px;border-radius:12px;background:var(--fill);overflow:hidden;user-select:none;touch-action:none}
.sv-fill{position:absolute;left:0;top:0;bottom:0;width:0;background:rgba(34,158,217,.16)}
.sv-text{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-2);pointer-events:none}
.sv-handle{position:absolute;left:0;top:0;width:46px;height:46px;border-radius:12px;background:var(--card);box-shadow:0 2px 8px rgba(0,0,0,.16);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--accent);cursor:grab;touch-action:none}
.slide-verify.ok .sv-fill{background:rgba(52,199,89,.18)}
.slide-verify.ok .sv-handle{background:var(--green);color:#fff}
.slide-verify.ok .sv-text{color:var(--green);font-weight:600}

/* 个人中心右上角消息角标 */
.nav-badge{
  position:absolute;top:-3px;right:-3px;min-width:16px;height:16px;padding:0 4px;
  border-radius:8px;background:var(--red);color:#fff;font-size:10px;font-weight:700;
  line-height:16px;text-align:center;box-shadow:0 0 0 2px var(--glass-bg);
}
.nav-badge.hidden{display:none}

/* 活动页 */
.activity-hero{
  position:relative;overflow:hidden;margin:12px 16px 0;padding:24px 20px;
  border-radius:20px;color:#fff;background:linear-gradient(135deg,#FF9F0A,#FF5E7A);
}
.ah-icon{position:absolute;right:-18px;bottom:-26px;width:150px;height:150px;opacity:.16;color:#fff}
.ah-badge{font-size:10.5px;letter-spacing:2px;font-weight:700;opacity:.85}
.ah-title{font-size:26px;font-weight:800;margin-top:6px;letter-spacing:.5px}
.ah-sub{font-size:13px;opacity:.92;margin-top:5px}
.ah-stats{margin-top:16px;font-size:12px;opacity:.95}
.ah-stats b{font-size:20px;font-weight:800;margin-right:3px}

/* 活动中心卡片 */
.activity-list{display:flex;flex-direction:column;gap:14px}
.activity-card{background:var(--card);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.ac-cover{position:relative;height:172px;background-size:cover;background-position:center;cursor:pointer}
.ac-cover-ph{background:linear-gradient(135deg,#FF9F0A,#FF5E7A);overflow:hidden}
.ac-cover-ph svg{position:absolute;right:-22px;bottom:-32px;width:170px;height:170px;opacity:.16;color:#fff}
.ac-badge{position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:20px;background:rgba(0,0,0,.32);color:#fff;font-size:11px;font-weight:600;backdrop-filter:blur(6px)}
.ac-body{padding:14px 16px 12px}
.ac-title{margin:0;font-size:17px;font-weight:700;line-height:1.4;cursor:pointer;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ac-meta{display:flex;flex-wrap:wrap;gap:5px;font-size:12px;color:var(--text-2);margin-top:6px}
.ac-sign{color:var(--accent);font-weight:600}
.ac-content-wrap{position:relative;margin-top:10px}
.ac-content{max-height:150px;overflow:hidden}
.ac-content.expanded{max-height:none}
.ac-fade{position:absolute;left:0;right:0;bottom:0;height:46px;background:linear-gradient(transparent,var(--card));pointer-events:none}
.ac-fade.hidden{display:none}
.ac-actions{display:flex;align-items:center;gap:8px;margin-top:10px}
.ac-actions .grow{flex:1}
.ac-more{color:var(--accent);font-weight:600;font-size:13px}
.btn.btn-sm{padding:7px 14px;font-size:13px;border-radius:10px}

/* 活动富文本（管理员 HTML） */
.dh-text.rich-html{white-space:normal}
.dh-cover{display:block;width:100%;height:190px;object-fit:cover;border-radius:14px;margin-top:12px;cursor:zoom-in}
.rich-html{font-size:15px;line-height:1.75;color:var(--text);word-break:break-word}
.rich-html h1,.rich-html h2,.rich-html h3{margin:12px 0 6px;font-weight:700;line-height:1.35}
.rich-html h1{font-size:21px}
.rich-html h2{font-size:18px}
.rich-html h3{font-size:16px}
.rich-html p{margin:8px 0}
.rich-html ul,.rich-html ol{padding-left:20px;margin:8px 0}
.rich-html img{max-width:100%;border-radius:10px;margin:8px 0}
.rich-html a{color:var(--accent)}
.rich-html blockquote{margin:8px 0;padding:8px 12px;border-left:3px solid var(--accent);background:var(--fill);border-radius:6px}
.rich-html hr{border:0;border-top:1px solid var(--line);margin:12px 0}

/* 活动报名 */
.activity-signup{margin:12px 16px;background:var(--card);border-radius:16px;padding:14px 16px;box-shadow:var(--shadow)}
.as-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.as-head b{font-size:15px}
.as-head .tiny{margin-top:2px}
.as-avatars{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.as-avatars img{width:30px;height:30px;border-radius:50%;object-fit:cover}
.sheet-box.panel-box {
    padding: 10px 15px;
}