/* ============================================================
   黄家御厨 · 智能体验增强模块 enhance.css  v20260921d
   覆盖：骨架屏 / 空状态 / 返回顶部 / 下拉刷新 /
         每日签到 / 积分商城 / 智能角标 / 猜你喜欢 /
         浏览历史 / 新手引导 / 邀请有礼
   非侵入式：仅新增类名，不覆盖原有样式
   ============================================================ */

/* ===== 1. 骨架屏 Skeleton ===== */
.skel-line{height:14px;border-radius:6px;background:linear-gradient(90deg,rgba(255,255,255,.04) 25%,rgba(255,255,255,.10) 37%,rgba(255,255,255,.04) 63%);background-size:400% 100%;animation:skelShimmer 1.4s ease infinite}
@keyframes skelShimmer{0%{background-position:100% 50%}100%{background-position:0 50%}}
.skel-card{display:flex;gap:12px;padding:14px;margin-bottom:10px;border:1px solid var(--border);border-radius:12px;background:var(--card)}
.skel-avatar{width:54px;height:54px;border-radius:50%;background:linear-gradient(90deg,rgba(255,255,255,.04) 25%,rgba(255,255,255,.10) 37%,rgba(255,255,255,.04) 63%);background-size:400% 100%;animation:skelShimmer 1.4s ease infinite;flex-shrink:0}
.skel-block{flex:1;display:flex;flex-direction:column;gap:8px}
.skel-block .skel-line:nth-child(1){width:40%}
.skel-block .skel-line:nth-child(2){width:70%}
.skel-block .skel-line:nth-child(3){width:55%}
.skel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.skel-grid .skel-card{margin-bottom:0}

/* ===== 2. 空状态引导 Empty State ===== */
.empty-state{text-align:center;padding:36px 20px 28px}
.empty-state .es-emoji{font-size:56px;margin-bottom:12px;opacity:.7;animation:esFloat 3s ease-in-out infinite}
@keyframes esFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.empty-state .es-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:6px}
.empty-state .es-desc{font-size:12px;color:var(--sub);line-height:1.7;margin-bottom:16px}
.empty-state .es-btn{display:inline-block;padding:9px 22px;background:linear-gradient(135deg,var(--gold),var(--accent));color:#1a1a2e;border-radius:20px;font-size:13px;font-weight:700;cursor:pointer;border:none}

/* ===== 3. 返回顶部 Back-to-Top ===== */
.back-to-top{position:fixed;right:14px;bottom:78px;width:42px;height:42px;border-radius:50%;background:var(--card);border:1px solid var(--gold);color:var(--gold);display:none;align-items:center;justify-content:center;font-size:20px;cursor:pointer;z-index:80;box-shadow:0 4px 16px rgba(0,0,0,.4);transition:transform .2s,opacity .3s}
.back-to-top.show{display:flex}
.back-to-top:active{transform:scale(.88)}

/* ===== 4. 下拉刷新 Pull-to-Refresh ===== */
.ptr-indicator{position:absolute;top:-44px;left:0;right:0;height:44px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:12px;color:var(--sub);transition:transform .2s;z-index:5}
.ptr-indicator .ptr-spin{width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--gold);border-radius:50%;animation:spin .7s linear infinite}
.ptr-indicator.ptr-loading{transform:translateY(44px)}

/* ===== 5. 每日签到 Check-in ===== */
.checkin-fab{position:fixed;right:14px;bottom:130px;z-index:79;display:flex;flex-direction:column;align-items:center;gap:2px}
.checkin-fab .cf-btn{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--gold),var(--accent));color:#1a1a2e;display:flex;align-items:center;justify-content:center;font-size:22px;cursor:pointer;box-shadow:0 4px 14px rgba(201,168,76,.45);border:none;position:relative}
.checkin-fab .cf-btn::after{content:'';position:absolute;top:-3px;right:-3px;width:11px;height:11px;border-radius:50%;background:var(--red);border:2px solid var(--bg);animation:badgePulse 1.6s infinite}
.checkin-fab .cf-btn.ci-done::after{display:none}
.checkin-fab .cf-label{font-size:10px;color:var(--gold);font-weight:600;background:var(--card);padding:1px 6px;border-radius:8px;white-space:nowrap}
@keyframes badgePulse{0%{transform:scale(1);opacity:1}50%{transform:scale(1.4);opacity:.6}100%{transform:scale(1);opacity:1}}
.ci-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.65);backdrop-filter:blur(4px)}
.ci-modal.show{display:flex}
.ci-panel{width:92%;max-width:380px;background:var(--card);border:1px solid var(--gold);border-radius:18px;padding:20px;max-height:86vh;overflow:auto;animation:slideUp .3s}
.ci-head{text-align:center;margin-bottom:14px}
.ci-head .ci-streak{font-size:42px;font-weight:800;color:var(--gold);line-height:1}
.ci-head .ci-streak-label{font-size:12px;color:var(--sub);margin-top:2px}
.ci-week{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-bottom:14px}
.ci-day{text-align:center;padding:8px 0;border-radius:10px;border:1px solid var(--border);font-size:11px}
.ci-day .cd-coin{font-size:14px;font-weight:700;color:var(--sub)}
.ci-day.ci-checked{background:rgba(201,168,76,.15);border-color:var(--gold)}
.ci-day.ci-checked .cd-coin{color:var(--gold)}
.ci-day.ci-today{border-color:var(--gold);border-width:2px}
.ci-day.ci-future{opacity:.4}
.ci-btn{width:100%;padding:13px;border:none;border-radius:12px;background:linear-gradient(135deg,var(--gold),var(--accent));color:#1a1a2e;font-size:15px;font-weight:800;cursor:pointer}
.ci-btn:disabled{opacity:.5;cursor:default}
.ci-tip{font-size:11px;color:var(--sub);text-align:center;margin-top:10px;line-height:1.6}

/* ===== 6. 积分商城 Points Mall ===== */
.mall-modal{position:fixed;inset:0;z-index:200;display:none;flex-direction:column;background:var(--bg)}
.mall-modal.show{display:flex}
.mall-head{position:sticky;top:0;display:flex;align-items:center;gap:10px;padding:13px 14px;background:var(--card);border-bottom:1px solid var(--border);z-index:3}
.mall-head .mh-close{font-size:22px;cursor:pointer;color:var(--gold)}
.mall-head .mh-title{font-size:16px;font-weight:700;flex:1}
.mall-balance{padding:14px;background:linear-gradient(135deg,rgba(201,168,76,.15),rgba(201,168,76,.02));border-bottom:1px solid var(--border)}
.mall-balance .mb-num{font-size:30px;font-weight:800;color:var(--gold)}
.mall-list{flex:1;overflow:auto;padding:12px;display:grid;grid-template-columns:1fr 1fr;gap:10px;align-content:start}
.mall-item{border:1px solid var(--border);border-radius:14px;overflow:hidden;background:var(--card);cursor:pointer;transition:border-color .2s}
.mall-item:active{border-color:var(--gold)}
.mall-item .mi-banner{height:64px;display:flex;align-items:center;justify-content:center;font-size:34px}
.mall-item .mi-body{padding:10px}
.mall-item .mi-name{font-size:13px;font-weight:600;margin-bottom:3px}
.mall-item .mi-desc{font-size:11px;color:var(--sub);line-height:1.5;margin-bottom:6px;min-height:30px}
.mall-item .mi-cost{font-size:14px;font-weight:800;color:var(--gold)}
.mall-item .mi-cost b{font-size:11px;font-weight:400;color:var(--sub)}

/* ===== 7. 智能角标 Nav Badge ===== */
.nav-item{position:relative}
.nav-badge{position:absolute;top:2px;right:50%;margin-right:-24px;min-width:16px;height:16px;padding:0 4px;border-radius:9px;background:var(--red);color:#fff;font-size:10px;font-weight:700;display:none;align-items:center;justify-content:center;line-height:1;border:1.5px solid var(--bg);z-index:2}
.nav-badge.show{display:flex}
.nav-dot{position:absolute;top:4px;right:50%;margin-right:-18px;width:8px;height:8px;border-radius:50%;background:var(--red);border:1.5px solid var(--bg);display:none;z-index:2}
.nav-dot.show{display:block;animation:badgePulse 1.6s infinite}
.nav-item.active .nav-dot,.nav-item.active .nav-badge{display:none!important}

/* ===== 8. 猜你喜欢 Guess You Like ===== */
.guess-card{margin-top:14px}
.guess-strip{display:flex;gap:10px;overflow-x:auto;padding:4px 0 6px;scrollbar-width:none}
.guess-strip::-webkit-scrollbar{display:none}
.guess-item{flex-shrink:0;width:120px;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--card);cursor:pointer;transition:border-color .2s}
.guess-item:active{border-color:var(--gold)}
.guess-item .gi-emoji{height:62px;display:flex;align-items:center;justify-content:center;font-size:30px;background:var(--bg)}
.guess-item .gi-info{padding:8px}
.guess-item .gi-name{font-size:12px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.guess-item .gi-meta{font-size:10px;color:var(--gold);margin-top:2px}

/* ===== 9. 浏览历史 History Strip ===== */
.hist-strip{margin-top:10px}
.hist-row{display:flex;gap:10px;overflow-x:auto;padding:4px 0;scrollbar-width:none}
.hist-row::-webkit-scrollbar{display:none}
.hist-chip{flex-shrink:0;display:flex;align-items:center;gap:6px;padding:7px 11px;border:1px solid var(--border);border-radius:20px;background:var(--card);cursor:pointer;font-size:12px;transition:border-color .2s}
.hist-chip:active{border-color:var(--gold)}
.hist-chip .hc-emoji{font-size:18px}
.hist-chip .hc-name{white-space:nowrap;max-width:72px;overflow:hidden;text-overflow:ellipsis}

/* ===== 10. 新手引导 Onboarding ===== */
.guide-mask{position:fixed;inset:0;z-index:300;background:rgba(0,0,0,.78);display:none;align-items:center;justify-content:center;backdrop-filter:blur(2px)}
.guide-mask.show{display:flex}
.guide-card{width:88%;max-width:340px;background:var(--card);border:1px solid var(--gold);border-radius:18px;padding:26px 22px;text-align:center;animation:slideUp .35s}
.guide-card .gc-emoji{font-size:60px;margin-bottom:12px}
.guide-card .gc-title{font-size:17px;font-weight:700;margin-bottom:8px}
.guide-card .gc-desc{font-size:13px;color:var(--sub);line-height:1.8;margin-bottom:18px}
.guide-card .gc-btn{width:100%;padding:13px;border:none;border-radius:12px;background:linear-gradient(135deg,var(--gold),var(--accent));color:#1a1a2e;font-size:15px;font-weight:800;cursor:pointer}
.guide-card .gc-skip{margin-top:10px;font-size:12px;color:var(--sub);cursor:pointer}
.guide-dots{display:flex;gap:6px;justify-content:center;margin-bottom:16px}
.guide-dots span{width:7px;height:7px;border-radius:50%;background:var(--border)}
.guide-dots span.on{background:var(--gold);width:18px;border-radius:4px}

/* ===== 11. 邀请有礼 Invite ===== */
.invite-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.7)}
.invite-modal.show{display:flex}
.invite-panel{width:90%;max-width:360px;background:linear-gradient(160deg,rgba(201,168,76,.18),var(--card));border:1px solid var(--gold);border-radius:20px;padding:24px 20px;text-align:center;animation:slideUp .3s}
.invite-panel .ip-emoji{font-size:50px;margin-bottom:10px}
.invite-panel .ip-title{font-size:18px;font-weight:800;margin-bottom:6px;color:var(--accent)}
.invite-panel .ip-desc{font-size:12px;color:var(--sub);line-height:1.7;margin-bottom:16px}
.invite-code-box{display:flex;gap:8px;margin-bottom:14px}
.invite-code-box input{flex:1;padding:11px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--gold);font-weight:700;font-size:16px;letter-spacing:2px;text-align:center}
.invite-code-box button{padding:0 16px;border:none;border-radius:10px;background:var(--gold);color:#1a1a2e;font-weight:700;font-size:13px;cursor:pointer;white-space:nowrap}
.invite-share{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.invite-share .is-btn{padding:10px 0;border:1px solid var(--border);border-radius:12px;background:var(--bg);cursor:pointer;font-size:11px;color:var(--sub)}
.invite-share .is-btn .is-emoji{font-size:22px;display:block;margin-bottom:4px}

/* ===== 公共增强 ===== */
.enh-section-title{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:700;margin:0 0 8px}
.enh-section-title .est-tag{font-size:10px;font-weight:600;padding:2px 7px;border-radius:8px;background:rgba(201,168,76,.15);color:var(--gold)}
@keyframes slideUp{from{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}