/* ==========================================================================
   小花社区 · 布局与组件 app.css
   ========================================================================== */

.shell { position: relative; z-index: 2; display: flex; height: 100vh; height: 100dvh; }

/* ============================ 侧边栏 ============================ */
.sidebar {
  width: var(--sidebar-w); flex: none; height: 100%;
  display: flex; flex-direction: column; gap: 6px;
  padding: 18px 14px;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(34px) saturate(200%);
  backdrop-filter: blur(34px) saturate(200%);
  border-right: 1px solid var(--glass-line);
  box-shadow: inset -1px 0 0 var(--glass-hi);
  z-index: 40;
}

.brand { display: flex; align-items: center; gap: 12px; padding: 8px 10px 16px; }
.brand .logo {
  width: 42px; height: 42px; border-radius: 14px; flex: none;
  background: var(--accent-g);
  display: grid; place-items: center; font-size: 22px;
  box-shadow: 0 8px 22px rgba(255,120,60,.38), inset 0 1px 0 rgba(255,255,255,.5);
}
.brand h1 { font-size: 17px; font-weight: 700; margin: 0; letter-spacing: .3px; }
.brand p { margin: 0; font-size: 11px; color: var(--fg-3); letter-spacing: .5px; }

.nav { display: flex; flex-direction: column; gap: 3px; position: relative; }
.nav-label { font-size: 11px; color: var(--fg-4); padding: 14px 12px 6px; letter-spacing: .8px; font-weight: 600; }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 12px; border-radius: var(--r-sm);
  color: var(--fg-2); font-size: 14.5px; font-weight: 500;
  cursor: pointer; user-select: none; position: relative;
  transition: background var(--d2) var(--ease-ios), color var(--d2) var(--ease-ios),
              transform var(--d1) var(--ease-spring);
}
.nav-item svg { width: 20px; height: 20px; flex: none; opacity: .85; }
.nav-item:hover { background: var(--hover); color: var(--fg); }
.nav-item:active { transform: scale(.975); }
.nav-item.on { color: #fff; background: var(--accent-g); box-shadow: 0 8px 22px rgba(255,120,60,.32); }
.nav-item.on svg { opacity: 1; }
.nav-item .badge {
  margin-left: auto; min-width: 20px; height: 20px; padding: 0 6px;
  border-radius: 999px; background: var(--accent-2); color: #fff;
  font-size: 11px; font-weight: 700; display: grid; place-items: center;
}

.side-foot { margin-top: auto; display: flex; flex-direction: column; gap: 8px; }
.user-card {
  display: flex; align-items: center; gap: 10px; padding: 10px;
  border-radius: var(--r-md); cursor: pointer;
  transition: background var(--d2) var(--ease-ios), transform var(--d1) var(--ease-spring);
}
.user-card:hover { background: var(--hover); }
.user-card:active { transform: scale(.98); }
.user-card .u-name { font-size: 14px; font-weight: 600; }
.user-card .u-sub { font-size: 11.5px; color: var(--fg-3); }

/* ============================ 主区 ============================ */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; position: relative; }

.topbar {
  height: var(--topbar-h); flex: none;
  display: flex; align-items: center; gap: 12px; padding: 0 20px;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  backdrop-filter: blur(30px) saturate(200%);
  border-bottom: 1px solid var(--glass-line);
  z-index: 30;
}
.topbar h2 { font-size: 18px; font-weight: 700; margin: 0; }
.topbar .sub { font-size: 12px; color: var(--fg-3); }
.topbar .spacer { flex: 1; }

.content { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 22px 20px 90px; }
.wrap { max-width: 860px; margin: 0 auto; }
.wrap-wide { max-width: 1120px; margin: 0 auto; }

/* 汉堡（窄屏显示） */
.burger { display: none; }

/* ============================ 卡片 ============================ */
.card {
  border-radius: var(--r-lg); padding: 20px;
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-line);
  box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi);
}
.card + .card { margin-top: 14px; }
.card-h { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.card-h h3 { font-size: 15px; font-weight: 700; margin: 0; }
.card-h .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }

/* ============================ 帖子行 ============================ */
.row {
  display: flex; gap: 14px; padding: 16px; border-radius: var(--r-md);
  cursor: pointer; position: relative;
  transition: background var(--d2) var(--ease-ios), transform var(--d1) var(--ease-spring),
              box-shadow var(--d2) var(--ease-ios);
}
.row + .row { margin-top: 6px; }
.row:hover { background: var(--hover); box-shadow: inset 0 0 0 1px var(--glass-line); }
.row:active { transform: scale(.992); }
.row .body { flex: 1; min-width: 0; }
.row .ttl { font-size: 15.5px; font-weight: 650; margin: 0 0 4px; display: flex; align-items: center; gap: 8px; }
.row .txt { font-size: 13.5px; color: var(--fg-2); margin: 0 0 8px; }
.row .meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--fg-3); flex-wrap: wrap; }
.row .meta .m { display: inline-flex; align-items: center; gap: 4px; }
.row .meta svg { width: 13px; height: 13px; }
.row .imgs { display: flex; gap: 6px; margin-top: 8px; }
.row .imgs img { width: 64px; height: 64px; object-fit: cover; border-radius: 10px; border: 1px solid var(--glass-line); }

/* 头像 */
.av { border-radius: 50%; object-fit: cover; flex: none; background: var(--hover); border: 1px solid var(--glass-line); }
.av-40 { width: 40px; height: 40px; } .av-34 { width: 34px; height: 34px; }
.av-56 { width: 56px; height: 56px; } .av-72 { width: 72px; height: 72px; }

/* ============================ 按钮 ============================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 38px; padding: 0 16px; border-radius: var(--r-full);
  border: 1px solid var(--glass-line); background: var(--glass-bg-2); color: var(--fg);
  font-size: 14px; font-weight: 600; font-family: inherit; cursor: pointer;
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  transition: transform var(--d1) var(--ease-spring), background var(--d2) var(--ease-ios),
              box-shadow var(--d2) var(--ease-ios), opacity var(--d2);
}
.btn:hover { background: var(--hover); }
.btn:active { transform: scale(.955); }
.btn:disabled { opacity: .5; pointer-events: none; }
.btn svg { width: 17px; height: 17px; }
.btn-pri {
  background: var(--accent-g); color: #fff; border-color: transparent;
  box-shadow: 0 8px 22px rgba(255,120,60,.34);
}
.btn-pri:hover { box-shadow: 0 10px 28px rgba(255,120,60,.44); }
.btn-ghost { background: transparent; }
.btn-danger { color: #ff6b6b; border-color: rgba(255,107,107,.3); }
.btn-lg { height: 46px; padding: 0 22px; font-size: 15px; }
.btn-block { width: 100%; }
.icon-btn {
  width: 38px; height: 38px; padding: 0; border-radius: 50%;
  display: grid; place-items: center; cursor: pointer;
  border: 1px solid var(--glass-line); background: var(--glass-bg);
  color: var(--fg-2); transition: transform var(--d1) var(--ease-spring), background var(--d2), color var(--d2);
}
.icon-btn:hover { background: var(--hover); color: var(--fg); }
.icon-btn:active { transform: scale(.9); }
.icon-btn svg { width: 19px; height: 19px; }

/* ============================ 表单 ============================ */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12.5px; color: var(--fg-3); margin-bottom: 6px; font-weight: 600; }
.input, .textarea {
  width: 100%; padding: 12px 14px; border-radius: var(--r-sm);
  background: var(--glass-bg); border: 1px solid var(--glass-line);
  color: var(--fg); font-size: 14.5px; font-family: inherit; outline: none;
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  transition: border-color var(--d2) var(--ease-ios), box-shadow var(--d2) var(--ease-ios), background var(--d2);
}
.input::placeholder, .textarea::placeholder { color: var(--fg-4); }
.input:focus, .textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(255,138,61,.16);
  background: var(--glass-bg-2);
}
.textarea { min-height: 130px; resize: vertical; line-height: 1.7; }

/* ============================ 标签/徽标 ============================ */
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: var(--r-full); font-size: 12.5px; font-weight: 600;
  background: var(--glass-bg); border: 1px solid var(--glass-line); color: var(--fg-2);
  cursor: pointer; transition: transform var(--d1) var(--ease-spring), background var(--d2), color var(--d2);
}
.chip:hover { background: var(--hover); color: var(--fg); }
.chip:active { transform: scale(.95); }
.chip.on { background: var(--accent-g); color: #fff; border-color: transparent; }
.tag {
  display: inline-block; padding: 3px 10px; border-radius: var(--r-full);
  font-size: 11.5px; font-weight: 600; background: var(--glass-bg-2); color: var(--fg-2);
  border: 1px solid var(--glass-line);
}
.tag-pin { background: rgba(255,138,61,.16); color: var(--accent); border-color: rgba(255,138,61,.3); }
.tag-closed { background: rgba(140,150,180,.16); color: var(--fg-3); }

/* ============================ 空态 / 骨架 ============================ */
.empty { text-align: center; padding: 64px 20px; color: var(--fg-3); }
.empty .e-ico { font-size: 46px; margin-bottom: 12px; opacity: .7; }
.empty .e-t { font-size: 15px; font-weight: 600; color: var(--fg-2); }
.empty .e-s { font-size: 13px; margin-top: 4px; }

.skel { border-radius: 8px; background: linear-gradient(100deg, var(--hover) 30%, var(--glass-bg-2) 50%, var(--hover) 70%); background-size: 220% 100%; animation: skelSh 1.4s ease-in-out infinite; }
@keyframes skelSh { 0% { background-position: 130% 0; } 100% { background-position: -30% 0; } }
.sk-row { display: flex; gap: 14px; padding: 16px; }
.sk-c { border-radius: 50%; }

/* ============================ 悬浮发布按钮 ============================ */
.fab {
  position: fixed; right: 26px; bottom: 26px; z-index: 35;
  width: 58px; height: 58px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--accent-g); color: #fff; display: grid; place-items: center;
  box-shadow: 0 14px 34px rgba(255,110,70,.45), inset 0 1px 0 rgba(255,255,255,.5);
  transition: transform var(--d2) var(--ease-spring), box-shadow var(--d2) var(--ease-ios);
}
.fab:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 18px 42px rgba(255,110,70,.55); }
.fab:active { transform: scale(.92); }
.fab svg { width: 26px; height: 26px; }

/* ============================ 提示条 toast ============================ */
.toast-host { position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 10px; align-items: center; pointer-events: none; }
.toast {
  padding: 12px 20px; border-radius: var(--r-full); font-size: 14px; font-weight: 600;
  background: var(--glass-bg-2); color: var(--fg);
  -webkit-backdrop-filter: blur(30px) saturate(200%); backdrop-filter: blur(30px) saturate(200%);
  border: 1px solid var(--glass-line); box-shadow: var(--glass-shadow);
}
.toast.err { color: #ff8a8a; border-color: rgba(255,107,107,.35); }
.toast.ok  { color: #7ee0a5; border-color: rgba(80,220,140,.35); }

/* ============================ 窄屏：侧边栏 → 抽屉 ============================ */
@media (max-width: 900px) {
  .sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; z-index: 120;
    transform: translateX(-102%);
    transition: transform var(--d3) var(--ease-ios);
    box-shadow: 24px 0 60px rgba(0,0,0,.5);
  }
  body.drawer .sidebar { transform: translateX(0); }
  .burger { display: grid; }
  .mask {
    position: fixed; inset: 0; z-index: 110; background: rgba(0,0,0,.45);
    -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
    opacity: 0; pointer-events: none; transition: opacity var(--d3) var(--ease-ios);
  }
  body.drawer .mask { opacity: 1; pointer-events: auto; }
  .content { padding: 16px 14px 96px; }
  .topbar { padding: 0 14px; }
  .wrap, .wrap-wide { max-width: 100%; }
}
@media (min-width: 901px) { .mask { display: none; } }