/* ============================================================
   CIRSS v2 · 雾蓝灰冷调极简主题 · 公共样式
   ============================================================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --c1:#3d6a94;               /* 雾蓝主色 */
  --c1-deep:#2f5478;          /* 深雾蓝 */
  --c2:#8aa6c0;               /* 浅雾蓝 */
  --bg:#f2f4f7;               /* 冷灰白 */
  --card:#ffffff;
  --fg:#2b3644;
  --fg2:#68798b;
  --fg3:#9daab8;
  --border:rgba(61,106,148,0.12);
  --border-strong:rgba(61,106,148,0.22);
  --shadow:0 2px 16px rgba(43,54,68,0.05);
  --shadow-hover:0 10px 32px rgba(61,106,148,0.13);
  --radius:16px;
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;background:var(--bg);color:var(--fg);overflow-x:hidden;min-height:100vh;min-height:100dvh;-webkit-font-smoothing:antialiased;touch-action:manipulation;line-height:1.6}

.hidden{display:none}

/* 背景层：漂浮微粒 + 冷调柔光 */
#bg-canvas{position:fixed;inset:0;z-index:0;pointer-events:none}
.glow{position:fixed;border-radius:50%;filter:blur(110px);pointer-events:none;z-index:0;opacity:.55}
.glow-1{width:460px;height:460px;background:rgba(138,166,192,0.20);top:-14%;right:-8%}
.glow-2{width:360px;height:360px;background:rgba(97,133,168,0.14);bottom:-10%;left:-9%}
.glow-3{width:260px;height:260px;background:rgba(160,180,200,0.16);top:42%;left:38%}

/* 顶部胶囊导航 */
.nav-wrap{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:100;display:flex;justify-content:center;width:100%;padding:0 1rem;pointer-events:none}
.nav{pointer-events:auto;display:flex;align-items:center;gap:0.15rem;background:rgba(255,255,255,0.78);backdrop-filter:blur(20px) saturate(1.3);-webkit-backdrop-filter:blur(20px) saturate(1.3);border:1px solid var(--border);border-radius:999px;padding:0.32rem;box-shadow:var(--shadow)}
.nav .brand{display:flex;align-items:center;gap:0.45rem;padding:0.34rem 0.9rem 0.34rem 0.72rem;text-decoration:none;color:var(--fg);font-weight:800;font-size:0.78rem;letter-spacing:2.5px;white-space:nowrap}
.nav .brand .dot{width:7px;height:7px;border-radius:50%;background:var(--c1);flex-shrink:0;animation:breathe 2.8s ease-in-out infinite;will-change:transform,opacity}
@keyframes breathe{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(0.72);opacity:0.55}}
.nav .nav-link{color:var(--fg2);text-decoration:none;font-size:0.77rem;letter-spacing:1px;padding:0.34rem 0.85rem;border-radius:999px;transition:color .25s,background .25s;white-space:nowrap}
.nav .nav-link:hover{color:var(--c1);background:rgba(61,106,148,0.07)}
.nav .nav-link.active{color:#fff;background:var(--c1)}

/* 公共动画 */
@keyframes fadeInUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes cardIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

/* 页面头部 */
.page-header{text-align:center;margin-bottom:2.4rem;animation:fadeInUp 0.7s ease both}
.page-header h1{font-size:clamp(1.7rem,5vw,2.4rem);font-weight:800;letter-spacing:6px;margin-bottom:0.55rem;color:var(--fg)}
.page-header h1 em{font-style:normal;color:var(--c1)}
.page-header .rule{width:36px;height:2px;border-radius:2px;background:var(--c1);margin:0 auto 0.8rem;opacity:.65}
.page-header p{color:var(--fg2);font-size:0.83rem;letter-spacing:2px}

/* 空状态 / 加载 */
.empty-state{text-align:center;padding:3.2rem 2rem;color:var(--fg2);font-size:0.85rem;letter-spacing:1px}
.loader{text-align:center;padding:2rem;color:var(--fg3);font-size:0.8rem;letter-spacing:2px}

/* 页脚 */
.footer{text-align:center;color:var(--fg3);font-size:0.67rem;letter-spacing:3px;margin-top:3.6rem;padding-bottom:2rem;position:relative;z-index:1}
.footer a{color:var(--fg2);text-decoration:none;transition:color .3s}
.footer a:hover{color:var(--c1)}
.footer .visit{margin-top:0.35rem;letter-spacing:2px;opacity:.8}

/* Toast */
.toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%) translateY(20px);background:#fff;border:1px solid var(--border-strong);border-radius:12px;padding:0.72rem 1.4rem;color:var(--fg);font-size:0.84rem;z-index:3000;opacity:0;transition:all .3s;pointer-events:none;white-space:nowrap;box-shadow:var(--shadow-hover)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.error{color:#b3563f;border-color:rgba(179,86,63,0.35)}
.toast.success{color:var(--c1)}

/* 通用按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:0.4rem;padding:0.68rem 1.6rem;border:none;border-radius:12px;background:var(--c1);color:#fff;font-family:inherit;font-size:0.84rem;font-weight:600;letter-spacing:2px;cursor:pointer;transition:all .28s ease;box-shadow:0 5px 16px rgba(61,106,148,0.25)}
.btn:hover{background:var(--c1-deep);transform:translateY(-1px)}
.btn:disabled{opacity:0.45;cursor:not-allowed;transform:none}
.btn-ghost{background:#fff;color:var(--fg2);border:1px solid var(--border-strong);box-shadow:none}
.btn-ghost:hover{color:var(--c1);border-color:var(--c1);background:#fff}
.btn-danger{background:#fff;color:#b3563f;border:1px solid rgba(179,86,63,0.3);box-shadow:none}
.btn-danger:hover{background:rgba(179,86,63,0.05);transform:none}

/* 骨架屏 */
.skel{position:relative;overflow:hidden;background:rgba(61,106,148,0.07);border-radius:10px}
.skel::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.8),transparent);transform:translateX(-100%);animation:shimmer 1.3s ease infinite}
@keyframes shimmer{to{transform:translateX(100%)}}
.skel-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem 1.4rem;box-shadow:var(--shadow)}
.skel-line{height:12px;margin-bottom:10px}
.skel-line.w40{width:40%}
.skel-line.w70{width:70%}
.skel-line.w90{width:90%}
.skel-circle{width:36px;height:36px;border-radius:50%;flex-shrink:0}
.skel-row{display:flex;gap:0.75rem;align-items:center;margin-bottom:12px}

/* 表情面板组件（CIRSS.emoji，留言板/后台/记事本共用） */
.cj-emoji-toggle{display:inline-flex;align-items:center;gap:0.3rem;color:var(--fg2);font-size:0.74rem;cursor:pointer;margin-bottom:0.5rem;transition:color .3s;user-select:none}
.cj-emoji-toggle:hover{color:var(--c1)}
.cj-emoji-panel{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:0.75rem;margin-bottom:0.75rem}
.cj-emoji-tabs{display:flex;gap:0.3rem;margin-bottom:0.55rem;overflow-x:auto;scrollbar-width:none}
.cj-emoji-tabs::-webkit-scrollbar{display:none}
.cj-emoji-tab{padding:0.26rem 0.68rem;border-radius:8px;border:1px solid transparent;background:transparent;color:var(--fg2);font-size:0.73rem;cursor:pointer;transition:all 0.25s;white-space:nowrap;font-family:inherit}
.cj-emoji-tab.on{border-color:var(--border-strong);color:var(--c1);background:rgba(61,106,148,0.07)}
.cj-emoji-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:0.22rem;max-height:138px;overflow-y:auto;scrollbar-width:thin}
.cj-emoji-grid::-webkit-scrollbar{width:4px}
.cj-emoji-grid::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:4px}
.cj-emoji-item{text-align:center;padding:0.26rem;font-size:1.2rem;cursor:pointer;border-radius:8px;transition:all 0.2s;-webkit-tap-highlight-color:transparent}
.cj-emoji-item:hover{background:rgba(61,106,148,0.08);transform:scale(1.12)}

/* 细滚动条 */
.slim-scroll{scrollbar-width:thin;scrollbar-color:rgba(61,106,148,0.25) transparent}
.slim-scroll::-webkit-scrollbar{width:5px;height:5px}
.slim-scroll::-webkit-scrollbar-track{background:transparent}
.slim-scroll::-webkit-scrollbar-thumb{background:rgba(61,106,148,0.22);border-radius:6px}

/* 环形加载 */
.spin{display:inline-block;width:15px;height:15px;border:2px solid rgba(61,106,148,0.2);border-top-color:var(--c1);border-radius:50%;animation:rot 0.7s linear infinite;vertical-align:-3px}
@keyframes rot{to{transform:rotate(360deg)}}

@media(max-width:640px){
  .nav-wrap{top:10px}
  .nav .brand{font-size:0.7rem;padding:0.3rem 0.7rem 0.3rem 0.6rem;letter-spacing:1.5px}
  .nav .nav-link{font-size:0.71rem;padding:0.3rem 0.62rem}
  .glow{filter:blur(75px)}
  .page-header h1{letter-spacing:3px}
  .cj-emoji-grid{grid-template-columns:repeat(7,1fr)}
}
@media(max-width:480px){
  .cj-emoji-grid{grid-template-columns:repeat(6,1fr)}
}
@media(max-width:380px){
  .nav .brand{font-size:0;padding:0.3rem 0.55rem;gap:0}
  .nav .nav-link{font-size:0.67rem;padding:0.3rem 0.52rem;letter-spacing:0.5px}
}

/* 尊重系统减弱动效偏好 */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.01ms !important;transition-duration:0.01ms !important}
}