*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Nunito','PingFang SC','Microsoft YaHei','Noto Sans SC',-apple-system,sans-serif;background:linear-gradient(180deg,#fff 0%,#ebebed 100%);color:#1d1d1f;min-height:100vh;overflow-x:hidden;font-weight:600;background-attachment:fixed}

/* ===== LOGIN CARD ===== */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#ffffff}
.login-card{width:400px;max-width:90vw;display:flex;flex-direction:column;gap:16px;padding:32px 28px}
.login-title{font-size:32px;font-weight:800;color:#1d1d1f;letter-spacing:2px;text-align:center;user-select:none}
.login-subtitle{font-size:15px;font-weight:700;color:#86868b;text-align:center;letter-spacing:.5px;margin-bottom:8px}
.input-row{display:flex;align-items:flex-end;gap:0;border-bottom:1.5px solid #d2d2d7;transition:border-color .25s;padding-bottom:6px}
.input-row:focus-within{border-bottom-color:#0071e3}
.captcha-row{align-items:center}
.slide-input{flex:1;padding:10px 4px;font-size:20px;border:none;outline:none;background:transparent;color:#1d1d1f;letter-spacing:1px;font-family:inherit;min-width:0;font-weight:700}
.slide-input::placeholder{color:#c7c7cc;letter-spacing:0;font-weight:600}
.captcha-img{height:46px;cursor:pointer;margin-bottom:-2px;margin-left:8px;border-radius:8px;transition:opacity .15s;flex-shrink:0}
.captcha-img:hover{opacity:.75}
.btn{padding:11px 36px;border-radius:24px;font-size:16px;font-weight:700;cursor:pointer;border:none;transition:all .2s;font-family:inherit;letter-spacing:.5px}
.btn-primary{background:#0077b6;color:#fff}
.btn-primary:hover{background:#0088cc}
.btn-primary:active{background:#069}
.btn-secondary{background:transparent;color:#0077b6;padding:11px 20px}
.btn-secondary:hover{background:rgba(0,119,182,.08)}
.btn-secondary:active{background:rgba(0,119,182,.15)}
.btn-login-submit{width:100%;padding:13px 36px;font-size:17px;margin-top:8px}
.error-text{color:#ff3b30;font-size:13px;margin-top:8px;min-height:18px;text-align:left;padding-left:4px;transition:opacity .2s;font-weight:700}
.login-mode-row{display:flex;justify-content:center;gap:6px;font-size:14px;letter-spacing:.3px}
.login-legal-row{margin-top:8px;display:flex;align-items:center;justify-content:flex-start}
.mode-toggle-text{color:#aeaeb2}
.mode-toggle-link{color:#0077b6;cursor:pointer;user-select:none;font-weight:700;transition:opacity .2s}
.mode-toggle-link:hover{opacity:.7}
.legal-check-label{display:flex;align-items:center;gap:6px;cursor:pointer;font-size:12px;font-weight:600;color:#86868b;letter-spacing:.2px}
.legal-check-label input[type="checkbox"]{width:16px;height:16px;cursor:pointer;accent-color:#0077b6;flex-shrink:0}
.legal-check-text{color:#86868b}
.legal-link{color:#0077b6;cursor:pointer;font-weight:700;text-decoration:none;transition:opacity .15s}
.legal-link:hover{opacity:.7}

/* ===== MAIN APP ===== */
.main-app{display:none;flex-direction:column;min-height:100vh}

/* Top Bar (minimal) */
.top-bar{height:44px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;flex-shrink:0;background:rgba(255,255,255,.88);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);position:sticky;top:0;z-index:100}
.top-bar-title{font-size:17px;font-weight:800;letter-spacing:1.5px;color:#1d1d1f}
.top-bar-right{display:flex;align-items:center}
.nav-avatar-wrap{position:relative}
.nav-avatar{width:28px;height:28px;border-radius:14px;object-fit:cover;cursor:pointer;display:block}
.nav-avatar-placeholder{display:none;width:28px;height:28px;border-radius:14px;background:#f5f5f7;align-items:center;justify-content:center;cursor:pointer;transition:background .15s}
.nav-avatar-placeholder:hover{background:#e5e5ea}
.dropdown{display:none;position:absolute;top:36px;right:0;background:#fff;border-radius:10px;box-shadow:0 4px 20px rgba(0,0,0,.1);min-width:130px;z-index:200;overflow:hidden;border:.5px solid #e5e5ea}
.dropdown.show{display:block}
.dropdown-item{padding:10px 16px;font-size:13px;font-weight:700;color:#1d1d1f;cursor:pointer;border:none;background:none;width:100%;text-align:left;font-family:inherit;letter-spacing:.3px;transition:background .12s}
.dropdown-item:hover{background:rgba(0,0,0,.03)}
.dropdown-item.danger{color:#ff3b30}
.dropdown-divider{height:.5px;background:#e5e5ea}

/* Feed */
.feed{max-width:580px;margin:0 auto;padding:0 16px 200px;width:100%;display:flex;flex-direction:column;gap:12px}
.feed-loading{text-align:center;padding:40px 0;color:#aeaeb2;font-size:14px;font-weight:700}
.feed-empty{text-align:center;padding:40px 0;color:#aeaeb2;font-size:14px;font-weight:700}

/* Post Card */
.post-card{background:#fff;border-radius:14px;padding:16px;box-shadow:0 1px 3px rgba(0,0,0,.06);display:flex;flex-direction:column;gap:10px}
.post-header{display:flex;align-items:center;justify-content:space-between}
.post-author{display:flex;align-items:center;gap:10px;flex:1;min-width:0}
.post-avatar-wrap{flex-shrink:0}
.post-avatar{width:36px;height:36px;border-radius:18px;object-fit:cover;background:#f0f0f2;flex-shrink:0}
.post-avatar-placeholder{width:36px;height:36px;border-radius:18px;background:#e5e5ea;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.post-author-name{font-size:15px;font-weight:800;color:#1d1d1f;letter-spacing:.3px;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.post-time{font-size:12px;font-weight:600;color:#aeaeb2;letter-spacing:.2px;white-space:nowrap}
.post-edited-badge{font-size:11px;font-weight:700;color:#aeaeb2;background:#f5f5f7;padding:1px 8px;border-radius:8px}
.post-content{font-size:15px;line-height:1.6;color:#2c2c2e;letter-spacing:.3px;word-break:break-word;font-weight:600}
.post-ai-disclaimer{display:flex;align-items:center;gap:6px;margin-top:6px;padding:6px 10px;background:rgba(255,149,0,.08);border-radius:8px;font-size:11px;font-weight:700;color:#c97a00;letter-spacing:.2px}
.post-ai-disclaimer svg{width:14px;height:14px;flex-shrink:0;color:#c97a00}
body.dark .post-ai-disclaimer{background:rgba(255,159,10,.12);color:#ff9f0a}
body.dark .post-ai-disclaimer svg{color:#ff9f0a}
.post-content-inner{display:flex;flex-direction:column;gap:6px}
.post-content-truncated{word-break:break-word}
.post-content-full{word-break:break-word}
.post-title{font-size:18px;font-weight:800;color:#1d1d1f;letter-spacing:.3px;line-height:1.3}
.post-tag{color:#0077b6;font-weight:700;cursor:pointer;transition:opacity .15s;font-size:14px}
.post-tag:hover{opacity:.7}
.post-mention{color:#0077b6;font-weight:700}
.btn-load-home{font-size:13px;font-weight:700;color:#0077b6;cursor:pointer;border:none;background:none;font-family:inherit;padding:0;text-align:left;transition:opacity .15s}
.btn-load-home:hover{opacity:.7}
.post-images{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.post-image-wrap{border-radius:8px;overflow:hidden;aspect-ratio:1}
.post-image{width:100%;height:100%;object-fit:cover;cursor:pointer;transition:opacity .15s}
.post-image:hover{opacity:.85}
.post-tags{display:flex;flex-wrap:wrap;gap:6px}

/* Post File Grid */
.post-file-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.post-file-item{position:relative;aspect-ratio:1;border-radius:8px;border:1px solid #e5e5ea;overflow:hidden;background:#fafafa;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:opacity .15s}
.post-file-item:hover{opacity:.85}
.file-item-img-wrap{width:100%;height:100%}
.file-item-img-wrap img{width:100%;height:100%;object-fit:cover;display:block}
.file-item-icon-fallback{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:#86868b}
.file-item-icon-wrap{display:flex;flex-direction:column;align-items:center;gap:3px;color:#86868b;width:100%;height:100%;justify-content:center}
.file-item-icon-wrap svg{width:24px;height:24px}
.file-item-ext{font-size:10px;font-weight:700;color:#aeaeb2;text-transform:uppercase;letter-spacing:.3px;max-width:70px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Post Footer */
.post-footer{display:flex;align-items:center;justify-content:space-between}
.post-actions{display:flex;align-items:center;gap:4px}
.btn-action{display:flex;align-items:center;gap:4px;cursor:pointer;border:none;background:none;padding:4px 8px;border-radius:8px;transition:background .15s;font-family:inherit;font-weight:700;font-size:13px;color:#86868b;letter-spacing:.3px}
.btn-action:hover{background:rgba(0,0,0,.04)}
.btn-action svg{width:14px;height:14px}
.post-stats{display:flex;align-items:center;gap:8px}
.btn-icon{background:none;border:none;cursor:pointer;padding:4px;border-radius:6px;transition:background .15s;color:#86868b;display:flex;align-items:center;justify-content:center}
.btn-icon:hover{background:rgba(0,0,0,.06)}
.btn-delete{color:#ff3b30}
.btn-delete:hover{background:rgba(255,59,48,.08)}

/* ===== PUBLISH BAR (inline at bottom) ===== */
.publish-bar{position:fixed;bottom:64px;left:50%;transform:translateX(-50%);width:100%;max-width:580px;padding:8px 16px 10px;z-index:90;background:rgba(255,255,255,.82);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:16px 16px 0 0;box-shadow:0 -2px 12px rgba(0,0,0,.06)}
.publish-files{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px;min-height:0}
.publish-file-item{position:relative;width:48px;height:48px;border-radius:8px;border:1px solid #e5e5ea;overflow:hidden;background:#fafafa;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.publish-file-img{width:100%;height:100%;object-fit:cover;display:block}
.publish-file-icon-wrap{display:flex;flex-direction:column;align-items:center;gap:1px;color:#86868b}
.publish-file-icon-wrap svg{width:18px;height:18px}
.publish-file-name{font-size:8px;font-weight:700;color:#aeaeb2;text-transform:uppercase;letter-spacing:.2px;max-width:42px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center}
.publish-file-remove{position:absolute;top:2px;right:2px;width:16px;height:16px;border-radius:8px;background:rgba(0,0,0,.5);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;padding:0;transition:background .15s}
.publish-file-remove:hover{background:rgba(0,0,0,.75)}
.publish-file-remove svg{width:8px;height:8px}
.publish-input-row{display:flex;align-items:center;gap:8px}
.publish-input{flex:1;padding:10px 14px;border:1.5px solid #d2d2d7;border-radius:22px;font-size:14px;font-family:inherit;font-weight:600;color:#1d1d1f;outline:none;transition:border-color .2s;letter-spacing:.3px;background:rgba(255,255,255,.6)}
.publish-input:focus{border-color:#0071e3}
.publish-input::placeholder{color:#c7c7cc}
.publish-btn-icon{width:36px;height:36px;border-radius:18px;border:none;background:rgba(0,0,0,.05);cursor:pointer;display:flex;align-items:center;justify-content:center;color:#86868b;transition:all .15s;padding:0;flex-shrink:0}
.publish-btn-icon:hover{background:rgba(0,0,0,.1);color:#1d1d1f}
.publish-send-btn{width:36px;height:36px;border-radius:18px;border:none;background:#0077b6;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;transition:all .15s;padding:0;flex-shrink:0}
.publish-send-btn:hover{background:#0088cc}
.publish-send-btn:active{background:#069}
.publish-send-btn:disabled{background:#aeaeb2;cursor:not-allowed}

/* ===== BOTTOM NAV BAR ===== */
.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:64px;display:flex;align-items:center;justify-content:space-around;padding:0 8px 8px;z-index:100;background:rgba(255,255,255,.72);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:0.5px solid rgba(0,0,0,.08)}
.nav-tab{display:flex;flex-direction:column;align-items:center;gap:3px;background:none;border:none;cursor:pointer;padding:6px 12px;border-radius:10px;transition:all .15s;color:#aeaeb2;font-family:inherit;font-size:10px;font-weight:700;letter-spacing:.2px;min-width:56px}
.nav-tab svg{transition:color .15s}
.nav-tab.active{color:#0077b6}
.nav-tab.active svg{color:#0077b6}
.nav-tab:disabled{opacity:.4;cursor:not-allowed}
.nav-tab:not(:disabled):hover{background:rgba(0,0,0,.04)}
.nav-tab:not(:disabled):active{background:rgba(0,0,0,.08)}

/* ===== TOAST ===== */
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%);background:#1d1d1f;color:#fff;padding:10px 24px;border-radius:20px;font-size:14px;font-weight:700;letter-spacing:.3px;z-index:999;pointer-events:none;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}
.toast.show{opacity:1;visibility:visible;animation:toastIn .3s ease}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

/* ===== AVATAR MODAL ===== */
.avatar-modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:600;align-items:center;justify-content:center;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.avatar-modal-overlay.show{display:flex}
.avatar-modal-panel{background:#fff;border-radius:16px;width:380px;max-width:94vw;box-shadow:0 8px 40px rgba(0,0,0,.18);animation:modalIn .25s ease;overflow:hidden}
.avatar-modal-body{padding:20px 20px 16px}
.avatar-modal-label{font-size:13px;font-weight:700;color:#86868b;margin-bottom:10px;letter-spacing:.3px}
.avatar-modal-input{width:100%;padding:10px 12px;border:1.5px solid #d2d2d7;border-radius:10px;font-size:14px;font-family:inherit;font-weight:600;color:#1d1d1f;outline:none;transition:border-color .2s;letter-spacing:.3px}
.avatar-modal-input:focus{border-color:#0071e3}
.avatar-modal-input::placeholder{color:#c7c7cc}
.avatar-modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:0 20px 16px}

/* ===== MODAL ===== */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:500;align-items:center;justify-content:center;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.modal-overlay.show{display:flex}
.modal-panel{background:#fff;border-radius:16px;width:460px;max-width:94vw;max-height:88vh;overflow-y:auto;box-shadow:0 8px 40px rgba(0,0,0,.18);animation:modalIn .25s ease}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:.5px solid #e5e5ea}
.modal-title{font-size:16px;font-weight:800;letter-spacing:.5px;color:#1d1d1f}
.modal-close{width:28px;height:28px;display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:14px;border:none;background:none;color:#86868b;transition:all .15s;padding:0}
.modal-close:hover{background:rgba(0,0,0,.06);color:#1d1d1f}
.modal-body{padding:16px 18px}

/* ===== COMMENTS SECTION ===== */
.comments-section{margin-top:6px;border-top:.5px solid #e5e5ea;padding-top:10px;display:none}
.comments-section.show{display:block}
.comment-item{padding:8px 0;border-bottom:.5px solid #f0f0f2}
.comment-item:last-child{border-bottom:none}
.comment-loading{text-align:center;padding:12px 0;color:#aeaeb2;font-size:12px;font-weight:700}
.comment-deleted{opacity:.5;font-style:italic}
.comment-row{display:flex;gap:8px;align-items:flex-start}
.comment-avatar-wrap{width:26px;height:26px;border-radius:13px;overflow:hidden;flex-shrink:0}
.comment-avatar-wrap img{width:100%;height:100%;object-fit:cover}
.comment-avatar-placeholder{width:26px;height:26px;border-radius:13px;background:#e5e5ea;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.comment-body{flex:1;min-width:0}
.comment-name-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.comment-name{font-size:13px;font-weight:800;color:#1d1d1f;letter-spacing:.3px;max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.comment-time-sm{font-size:11px;font-weight:600;color:#aeaeb2;letter-spacing:.2px}
.comment-text{font-size:14px;line-height:1.5;color:#2c2c2e;letter-spacing:.3px;word-break:break-word;font-weight:600;margin-top:2px}
.comment-actions{display:flex;align-items:center;gap:6px;margin-top:3px}
.comment-reply-btn-sm{font-size:12px;font-weight:700;color:#0077b6;cursor:pointer;border:none;background:none;font-family:inherit;padding:0;letter-spacing:.3px;transition:opacity .15s}
.comment-reply-btn-sm:hover{opacity:.7}
.comment-del-btn{font-size:12px;font-weight:700;color:#ff3b30;cursor:pointer;border:none;background:none;font-family:inherit;padding:0;letter-spacing:.3px;transition:opacity .15s}
.comment-del-btn:hover{opacity:.7}
.comment-mention{font-weight:700;color:#0077b6}
.level-badge{font-size:11px;font-weight:700;color:#fff;padding:1px 6px;border-radius:8px;display:inline-block;line-height:1.4;white-space:nowrap;vertical-align:middle;text-shadow:0 1px 2px rgba(0,0,0,.25)}
.post-level-badge{font-size:11px;font-weight:700;padding:1px 6px;border-radius:8px;display:inline-block;line-height:1.4;white-space:nowrap;vertical-align:middle}
.level-lv1{background:linear-gradient(135deg,#9b9b9b,#7d7d7d);color:#fff}
.level-lv2{background:linear-gradient(135deg,#7cb342,#558b2f);color:#fff}
.level-lv3{background:linear-gradient(135deg,#42a5f5,#1e88e5);color:#fff}
.level-lv4{background:linear-gradient(135deg,#ab47bc,#8e24aa);color:#fff}
.level-lv5{background:linear-gradient(135deg,#ff9800,#f57c00);color:#fff}
.level-lv6{background:linear-gradient(135deg,#f44336,#d32f2f);color:#fff}
.replies-block{margin-left:34px;margin-top:6px;border-left:1.5px solid #e5e5ea;padding-left:10px}
.reply-item{padding:6px 0;border-bottom:.5px solid #f0f0f2}
.reply-item:last-child{border-bottom:none}
.comment-reply-inline{display:none;margin-top:6px;gap:6px;align-items:flex-end}
.comment-reply-inline.show{display:flex}
.comment-reply-input{flex:1;padding:8px 10px;border:1.5px solid #d2d2d7;border-radius:10px;font-size:13px;font-family:inherit;font-weight:600;color:#1d1d1f;outline:none;transition:border-color .2s;letter-spacing:.3px;resize:none}
.comment-reply-input:focus{border-color:#0071e3}
.comment-reply-input::placeholder{color:#c7c7cc}
.comment-reply-submit{padding:8px 16px;border-radius:18px;border:none;background:#0077b6;color:#fff;font-size:12px;font-weight:700;cursor:pointer;font-family:inherit;letter-spacing:.3px;white-space:nowrap;transition:background .15s}
.comment-reply-submit:hover{background:#0088cc}
.comment-reply-submit:active{background:#069}
.comment-reply-submit:disabled{background:#aeaeb2;cursor:not-allowed}
.comment-reply-to{font-size:11px;font-weight:700;color:#86868b;margin-bottom:4px;letter-spacing:.2px;display:none}
.comment-reply-to.show{display:block}
.comment-input-wrap{display:flex;gap:8px;align-items:flex-end;margin-top:10px;padding-top:10px;border-top:.5px solid #e5e5ea}
.comment-input{flex:1;padding:8px 10px;border:1.5px solid #d2d2d7;border-radius:10px;font-size:13px;font-family:inherit;font-weight:600;color:#1d1d1f;outline:none;transition:border-color .2s;letter-spacing:.3px;resize:none}
.comment-input:focus{border-color:#0071e3}
.comment-input::placeholder{color:#c7c7cc}
.comment-submit-btn{padding:8px 18px;border-radius:18px;border:none;background:#0077b6;color:#fff;font-size:12px;font-weight:700;cursor:pointer;font-family:inherit;letter-spacing:.3px;white-space:nowrap;transition:background .15s}
.comment-submit-btn:hover{background:#0088cc}
.comment-submit-btn:active{background:#069}
.comment-submit-btn:disabled{background:#aeaeb2;cursor:not-allowed}

/* ===== CONFIRM DIALOG ===== */
.confirm-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:700;align-items:center;justify-content:center;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.confirm-overlay.show{display:flex}
.confirm-panel{background:#fff;border-radius:16px;width:340px;max-width:90vw;padding:24px 20px 20px;box-shadow:0 8px 40px rgba(0,0,0,.18);text-align:center;animation:modalIn .25s ease}
.confirm-title{font-size:15px;font-weight:700;color:#1d1d1f;margin-bottom:20px;line-height:1.5;letter-spacing:.4px}
.confirm-buttons{display:flex;gap:10px;justify-content:center}
.confirm-buttons button{min-width:90px}
.publish-confirm-panel{width:380px;max-width:92vw}
.publish-confirm-body{display:flex;flex-direction:column;gap:14px;margin-bottom:20px;text-align:left}
.publish-confirm-check{display:flex;align-items:flex-start;gap:8px;cursor:pointer;font-size:13px;font-weight:600;color:#1d1d1f;letter-spacing:.2px;user-select:none}
.publish-confirm-check input[type="checkbox"]{width:16px;height:16px;cursor:pointer;accent-color:#0077b6;flex-shrink:0;margin-top:2px}
.publish-confirm-check a{color:#0077b6;text-decoration:none;font-weight:700}
.publish-confirm-check a:hover{opacity:.7}
.btn-cancel{background:transparent;color:#86868b;padding:9px 18px;border-radius:22px;font-size:14px;font-weight:700;cursor:pointer;border:none;font-family:inherit;letter-spacing:.3px;transition:all .15s}
.btn-cancel:hover{background:rgba(0,0,0,.04);color:#1d1d1f}
.btn-publish{padding:9px 28px;border-radius:22px;font-size:14px;font-weight:700;cursor:pointer;border:none;transition:all .2s;font-family:inherit;letter-spacing:.5px;background:#0077b6;color:#fff}
.btn-publish:hover{background:#0088cc}
.btn-publish:active{background:#069}
.btn-publish:disabled{background:#aeaeb2;cursor:not-allowed}

/* ===== UNIFIED CONTENT VIEWER (bottom slide-up) ===== */
.viewer-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:800;align-items:flex-end;justify-content:center;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.viewer-overlay.show{display:flex}
.viewer-panel{background:#f5f5f7;border-radius:16px 16px 0 0;width:100%;max-width:580px;max-height:88vh;display:flex;flex-direction:column;box-shadow:0 -4px 24px rgba(0,0,0,.15);animation:viewerSlideUp .3s cubic-bezier(.4,0,.2,1)}
@keyframes viewerSlideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
.viewer-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:.5px solid #e5e5ea;flex-shrink:0;background:#fff;border-radius:16px 16px 0 0}
.viewer-title{font-size:14px;font-weight:800;color:#1d1d1f;letter-spacing:.3px;max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.viewer-header-actions{display:flex;align-items:center;gap:8px}
.viewer-copy-btn{display:flex;align-items:center;gap:4px;cursor:pointer;border:none;background:none;padding:6px 10px;border-radius:8px;color:#86868b;font-family:inherit;font-size:12px;font-weight:700;letter-spacing:.3px;transition:all .15s}
.viewer-copy-btn:hover{background:rgba(0,0,0,.06);color:#1d1d1f}
.viewer-copy-btn.copied{color:#34c759}
.viewer-close{width:28px;height:28px;display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:14px;border:none;background:none;color:#86868b;transition:all .15s;padding:0}
.viewer-close:hover{background:rgba(0,0,0,.06);color:#1d1d1f}
.viewer-body{flex:1;overflow-y:auto;padding:0;background:#f5f5f7}
.viewer-body .feed-loading{text-align:center;padding:40px 0;color:#aeaeb2;font-size:14px;font-weight:700}
.viewer-body pre{border-radius:0;margin:0;tab-size:4;padding:16px;font-size:13px;line-height:1.6;overflow-x:auto}
.viewer-body pre code{font-size:13px;font-family:'JetBrains Mono','Fira Code','Cascadia Code','Consolas',monospace;line-height:1.6}
.viewer-body img.viewer-image{width:100%;max-height:70vh;object-fit:contain;display:block;background:#1d1d1f;cursor:default}
.viewer-body .viewer-md{padding:16px;font-size:14px;line-height:1.7;color:#2c2c2e;font-weight:600;letter-spacing:.3px;background:#fff;min-height:200px}
.viewer-body .viewer-md h1,.viewer-body .viewer-md h2,.viewer-body .viewer-md h3{font-weight:800;color:#1d1d1f;margin:12px 0 6px}
.viewer-body .viewer-md p{margin:6px 0}
.viewer-body .viewer-md pre{background:#2d2d2d;color:#ccc;padding:12px 16px;border-radius:8px;overflow-x:auto;font-size:13px;line-height:1.5}
.viewer-body .viewer-md code{font-family:'JetBrains Mono','Fira Code','Cascadia Code','Consolas',monospace;font-size:13px}
.viewer-body .viewer-md a{color:#0077b6}
.viewer-body .viewer-html{border:none;width:100%;min-height:400px;border-radius:0;background:#fff}
.viewer-body .viewer-pdf-container{width:100%;overflow-y:auto;padding:16px;background:#f5f5f7}
.viewer-body .pdf-page{margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.viewer-body .pdf-page canvas{max-width:100%;height:auto!important}
.viewer-body .viewer-text{font-size:13px;font-family:'JetBrains Mono','Fira Code','Cascadia Code','Consolas',monospace;white-space:pre-wrap;word-break:break-word;line-height:1.5;color:#2c2c2e;margin:0;padding:16px;background:#fafafa;min-height:200px}
.viewer-docx-loading{text-align:center;padding:40px 16px;color:#aeaeb2;font-size:14px;font-weight:700}

/* ===== USER PROFILE ===== */
.profile-avatar-large{width:72px;height:72px;border-radius:36px;overflow:hidden;margin:0 auto 12px;background:#f0f0f2;display:flex;align-items:center;justify-content:center}
.profile-avatar-large img{width:100%;height:100%;object-fit:cover}
.profile-avatar-placeholder{width:72px;height:72px;border-radius:36px;background:#e5e5ea;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.profile-name{font-size:20px;font-weight:800;text-align:center;color:#1d1d1f;margin-bottom:6px;letter-spacing:.3px}
.profile-stats{display:flex;justify-content:center;gap:20px;margin:12px 0;font-size:14px;font-weight:700;color:#86868b}
.profile-posts{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.profile-post-item{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;background:#f9f9fb;border-radius:10px;cursor:pointer;transition:background .15s}
.profile-post-item:hover{background:#f0f0f2}
.profile-post-title{font-size:14px;font-weight:700;color:#1d1d1f;letter-spacing:.3px}
.profile-post-time{font-size:12px;font-weight:600;color:#aeaeb2}

/* ===== EMPTY STATE ===== */
.empty-state{display:flex;flex-direction:column;align-items:center;gap:12px;padding:40px 0;color:#aeaeb2}
.empty-state p{font-size:14px;font-weight:700}

/* ===== PAGINATION ===== */
.btn-load-more{padding:10px 24px;border-radius:20px;border:1.5px solid #d2d2d7;background:#fff;color:#1d1d1f;font-weight:700;font-size:13px;cursor:pointer;font-family:inherit;letter-spacing:.3px;transition:all .15s;margin:0 auto;display:block}
.btn-load-more:hover{border-color:#0077b6;color:#0077b6}
.btn-load-more:active{background:rgba(0,119,182,.06)}
#pagination{text-align:center;padding:8px 0}

/* ===== DARK MODE ===== */
body.dark{background:linear-gradient(180deg,#1c1c1e 0%,#000 100%);color:#f5f5f7}
body.dark .login-page{background:#000}
body.dark .top-bar{background:rgba(28,28,30,.88)}
body.dark .top-bar-title{color:#f5f5f7}
body.dark .nav-avatar-placeholder{background:#38383a}
body.dark .nav-avatar-placeholder:hover{background:#48484a}
body.dark .dropdown{background:#2c2c2e;box-shadow:0 4px 20px rgba(0,0,0,.4);border-color:#48484a}
body.dark .dropdown-item{color:#f5f5f7}
body.dark .dropdown-item:hover{background:rgba(255,255,255,.06)}
body.dark .dropdown-divider{background:#48484a}
body.dark .feed-loading{color:#8e8e93}
body.dark .feed-empty{color:#8e8e93}
body.dark .post-card{background:#1c1c1e;box-shadow:0 1px 3px rgba(0,0,0,.3)}
body.dark .post-author-name{color:#f5f5f7}
body.dark .post-title{color:#f5f5f7}
body.dark .post-content{color:#e5e5ea}
body.dark .post-time{color:#8e8e93}
body.dark .post-avatar-placeholder{background:#38383a}
body.dark .post-file-item{background:#2c2c2e;border-color:#48484a}
body.dark .file-item-icon-wrap{color:#8e8e93}
body.dark .file-item-ext{color:#8e8e93}
body.dark .file-item-icon-fallback{color:#8e8e93}
body.dark .post-edited-badge{color:#8e8e93;background:#2c2c2e}
body.dark .comments-section{border-top-color:#38383a}
body.dark .comment-item{border-bottom-color:#2c2c2e}
body.dark .comment-name{color:#f5f5f7}
body.dark .comment-text{color:#e5e5ea}
body.dark .comment-time-sm{color:#8e8e93}
body.dark .comment-avatar-placeholder{background:#38383a}
body.dark .replies-block{border-left-color:#38383a}
body.dark .reply-item{border-bottom-color:#2c2c2e}
body.dark .comment-loading{color:#8e8e93}
body.dark .comment-input,.comment-reply-input{background:#2c2c2e;border-color:#48484a;color:#f5f5f7}
body.dark .comment-input:focus,.comment-reply-input:focus{border-color:#0a84ff}
body.dark .comment-input::placeholder,.comment-reply-input::placeholder{color:#636366}
body.dark .comment-input-wrap{border-top-color:#38383a}
body.dark .btn-action{color:#8e8e93}
body.dark .btn-action:hover{background:rgba(255,255,255,.06)}
body.dark .btn-icon{color:#8e8e93}
body.dark .btn-icon:hover{background:rgba(255,255,255,.08)}
body.dark .publish-bar{background:rgba(28,28,30,.82);box-shadow:0 -2px 12px rgba(0,0,0,.25)}
body.dark .publish-input{background:rgba(44,44,46,.7);border-color:#48484a;color:#f5f5f7}
body.dark .publish-input:focus{border-color:#0a84ff}
body.dark .publish-input::placeholder{color:#636366}
body.dark .publish-btn-icon{background:rgba(255,255,255,.08);color:#8e8e93}
body.dark .publish-btn-icon:hover{background:rgba(255,255,255,.14);color:#f5f5f7}
body.dark .publish-send-btn{background:#0a84ff}
body.dark .publish-send-btn:hover{background:#409cff}
body.dark .publish-file-item{background:#2c2c2e;border-color:#48484a}
.publish-ai-check{display:flex;align-items:center;gap:6px;margin-top:8px;font-size:12px;color:#c7c7cc;cursor:pointer;user-select:none;transition:color .2s;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif}
.publish-ai-check:hover{color:#aeaeb2}
.publish-ai-check input[type=checkbox]{accent-color:#aeaeb2;width:14px;height:14px;cursor:pointer;margin:0}
body.dark .publish-ai-check{color:#636366}
body.dark .publish-ai-check:hover{color:#8e8e93}
body.dark .publish-ai-check input[type=checkbox]{accent-color:#48484a}
body.dark .bottom-nav{background:rgba(28,28,30,.72);border-top-color:rgba(255,255,255,.06)}
body.dark .nav-tab{color:#8e8e93}
body.dark .nav-tab.active{color:#0a84ff}
body.dark .nav-tab.active svg{color:#0a84ff}
body.dark .nav-tab:not(:disabled):hover{background:rgba(255,255,255,.06)}
body.dark .nav-tab:not(:disabled):active{background:rgba(255,255,255,.1)}
body.dark .modal-overlay{background:rgba(0,0,0,.65)}
body.dark .modal-panel{background:#1c1c1e}
body.dark .modal-header{border-bottom-color:#38383a}
body.dark .modal-title{color:#f5f5f7}
body.dark .modal-close{color:#8e8e93}
body.dark .modal-close:hover{background:rgba(255,255,255,.08);color:#f5f5f7}
body.dark .avatar-modal-panel{background:#1c1c1e}
body.dark .avatar-modal-label{color:#8e8e93}
body.dark .avatar-modal-input{background:#2c2c2e;border-color:#48484a;color:#f5f5f7}
body.dark .avatar-modal-input:focus{border-color:#0a84ff}
body.dark .avatar-modal-input::placeholder{color:#636366}
body.dark .btn-cancel{color:#8e8e93}
body.dark .btn-cancel:hover{background:rgba(255,255,255,.06);color:#f5f5f7}
body.dark .btn-publish{background:#0a84ff}
body.dark .btn-publish:hover{background:#409cff}
body.dark .btn-publish:active{background:#0066cc}
body.dark .confirm-overlay{background:rgba(0,0,0,.7)}
body.dark .confirm-panel{background:#1c1c1e}
body.dark .confirm-title{color:#f5f5f7}
body.dark .viewer-panel{background:#1c1c1e}
body.dark .viewer-header{background:#1c1c1e;border-bottom-color:#38383a}
body.dark .viewer-title{color:#f5f5f7}
body.dark .viewer-close{color:#8e8e93}
body.dark .viewer-close:hover{background:rgba(255,255,255,.08);color:#f5f5f7}
body.dark .viewer-copy-btn{color:#8e8e93}
body.dark .viewer-copy-btn:hover{background:rgba(255,255,255,.08);color:#f5f5f7}
body.dark .viewer-body{background:#1c1c1e}
body.dark .viewer-body .feed-loading{color:#8e8e93}
body.dark .viewer-body .viewer-md{color:#e5e5ea;background:#1c1c1e}
body.dark .viewer-body .viewer-md h1,.viewer-body .viewer-md h2,.viewer-body .viewer-md h3{color:#f5f5f7}
body.dark .viewer-body .viewer-md a{color:#0a84ff}
body.dark .viewer-body .viewer-text{background:#2c2c2e;color:#e5e5ea}
body.dark .viewer-body pre{background:#2c2c2e}
body.dark .viewer-body .viewer-html{background:#1c1c1e}
body.dark .viewer-body .viewer-pdf-container{background:#1c1c1e}
body.dark .viewer-body img.viewer-image{background:#000}
body.dark .viewer-docx-loading{color:#8e8e93}
body.dark .login-title{color:#f5f5f7}
body.dark .login-subtitle{color:#8e8e93}
body.dark .slide-input{color:#f5f5f7}
body.dark .slide-input::placeholder{color:#636366}
body.dark .input-row{border-bottom-color:#48484a}
body.dark .input-row:focus-within{border-bottom-color:#0a84ff}
body.dark .captcha-img{opacity:.9}
body.dark .btn-primary{background:#0a84ff}
body.dark .btn-primary:hover{background:#409cff}
body.dark .btn-primary:active{background:#0066cc}
body.dark .btn-secondary{color:#0a84ff}
body.dark .btn-secondary:hover{background:rgba(10,132,255,.12)}
body.dark .mode-toggle-text{color:#8e8e93}
body.dark .mode-toggle-link{color:#0a84ff}
body.dark .legal-check-label{color:#8e8e93}
body.dark .legal-check-text{color:#8e8e93}
body.dark .legal-link{color:#0a84ff}
body.dark .post-tag{color:#0a84ff}
body.dark .post-mention{color:#0a84ff}
body.dark .btn-load-home{color:#0a84ff}
body.dark .comment-reply-btn-sm{color:#0a84ff}
body.dark .comment-reply-submit{background:#0a84ff}
body.dark .comment-reply-submit:hover{background:#409cff}
body.dark .comment-submit-btn{background:#0a84ff}
body.dark .comment-submit-btn:hover{background:#409cff}
body.dark .comment-mention{color:#0a84ff}
body.dark .file-viewer-md a{color:#0a84ff}
body.dark .toast{background:#f5f5f7;color:#1d1d1f}
body.dark .btn-load-more{background:#2c2c2e;border-color:#48484a;color:#f5f5f7}
body.dark .btn-load-more:hover{border-color:#0a84ff;color:#0a84ff}
body.dark .profile-post-item{background:#2c2c2e}
body.dark .profile-post-item:hover{background:#38383a}
body.dark .profile-post-title{color:#f5f5f7}
body.dark .profile-name{color:#f5f5f7}
body.dark .profile-stats{color:#8e8e93}


/* ===== MOBILE ===== */
@media(max-width:640px){
.login-page{padding:0;align-items:flex-start;padding-top:20vh}
.login-card{width:100%;max-width:100vw;padding:20px 16px;gap:12px}
.login-title{font-size:24px}
.login-subtitle{font-size:13px}
.slide-input{font-size:17px}
.btn{padding:10px 26px;font-size:14px}
.top-bar{padding:0 12px;height:42px}
.top-bar-title{font-size:15px;letter-spacing:1px}
.feed{max-width:100%;padding:8px 10px 200px;gap:8px}
.feed-loading{font-size:13px;padding:30px 0}
.feed-empty{font-size:13px;padding:30px 0}
.post-card{padding:12px;border-radius:10px;gap:8px}
.post-header{gap:6px}
.post-author{gap:6px}
.post-avatar{width:28px;height:28px;border-radius:14px}
.post-avatar-placeholder{width:28px;height:28px;border-radius:14px}
.post-author-name{font-size:13px;max-width:90px}
.post-time{font-size:11px}
.post-content{font-size:14px;line-height:1.5}
.post-file-grid{gap:4px}
.post-title{font-size:16px}
.btn-action{font-size:12px;gap:2px;padding:3px 6px}
.btn-action svg{width:12px;height:12px}
.post-edited-badge{font-size:10px;padding:1px 6px}
.comment-avatar-wrap{width:22px;height:22px;border-radius:11px}
.comment-avatar-placeholder{width:22px;height:22px;border-radius:11px}
.comment-name{font-size:12px;max-width:70px}
.comment-text{font-size:13px}
.comment-time-sm{font-size:10px}
.comment-reply-btn-sm{font-size:11px}
.comment-del-btn{font-size:11px}
.comment-input,.comment-reply-input{font-size:12px}
.comment-submit-btn,.comment-reply-submit{font-size:11px;padding:7px 14px}
.replies-block{margin-left:26px;padding-left:8px}
.level-badge{font-size:10px;padding:1px 5px}
.toast{font-size:12px;padding:8px 18px;border-radius:16px;bottom:72px}
.toast.show{font-size:12px;padding:8px 18px;border-radius:16px;bottom:72px}
.dropdown{min-width:110px;top:34px}
.dropdown-item{font-size:12px;padding:9px 14px}
.avatar-modal-panel{width:90vw}
.file-viewer-panel{width:100%;max-width:100vw;border-radius:14px 14px 0 0;max-height:90vh;margin-top:auto}
.file-viewer-panel .modal-body{max-height:55vh}
.confirm-panel{width:85vw;padding:20px 16px 16px}
.confirm-title{font-size:14px}
.modal-panel{width:100%;max-width:100vw;border-radius:14px 14px 0 0;max-height:90vh;margin-top:auto}
.modal-body{padding:12px}
.modal-header{padding:10px 12px}
.modal-title{font-size:15px}
.publish-bar{max-width:100%;padding:6px 10px 8px;border-radius:12px 12px 0 0;bottom:60px}
.publish-input{font-size:13px;padding:9px 12px}
.publish-btn-icon{width:32px;height:32px}
.publish-send-btn{width:32px;height:32px}
.publish-file-item{width:40px;height:40px}
.bottom-nav{height:56px;padding:0 4px 4px}
.nav-tab{font-size:9px;padding:4px 8px;min-width:44px}
}

/* ===== AI OVERLAY ===== */
.ai-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:750;align-items:center;justify-content:center;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.ai-overlay.show{display:flex}
.ai-dialog{background:#fff;border-radius:24px;width:380px;max-width:92vw;padding:28px 24px 24px;box-shadow:0 24px 80px rgba(0,0,0,.18);animation:modalIn .25s ease}
.ai-dialog-header{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#1d1d1f;margin-bottom:16px}
.ai-dialog-header svg{color:#0077b6}
.ai-dialog-body{text-align:center}
.ai-prompt-text{font-size:15px;font-weight:700;color:#1d1d1f;margin-bottom:20px;letter-spacing:.3px}
.ai-options{display:flex;flex-direction:column;gap:10px}
body.dark .ai-overlay{background:rgba(0,0,0,.75)}
body.dark .ai-dialog{background:#1c1c1e;box-shadow:0 24px 80px rgba(0,0,0,.5)}
body.dark .ai-dialog-header{color:#f5f5f7}
body.dark .ai-dialog-header svg{color:#0a84ff}
body.dark .ai-prompt-text{color:#f5f5f7}

/* ===== COMMENTS PANEL (bottom slide) ===== */
.comments-panel{animation:viewerSlideUp .3s cubic-bezier(.4,0,.2,1)}
.comments-body{flex:1;overflow-y:auto;min-height:0}
.comment-empty{padding:24px;text-align:center;color:#86868b;font-size:14px;letter-spacing:.3px}
.comments-input-area{display:flex;gap:8px;padding:10px 0 0;border-top:1px solid #e5e5ea;flex-shrink:0;margin-top:8px}
.comment-fast-input{flex:1;border:1px solid #d2d2d7;border-radius:10px;padding:10px 14px;font-size:14px;outline:none;background:#f5f5f7;font-family:inherit;color:#1d1d1f;transition:border-color .15s;font-weight:600;letter-spacing:.3px}
.comment-fast-input:focus{border-color:#007aff}
.comment-fast-input::placeholder{color:#c7c7cc}
.comment-fast-send{border:none;background:#007aff;color:#fff;border-radius:10px;padding:0 14px;cursor:pointer;font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;min-width:44px;transition:opacity .15s;font-family:inherit}
.comment-fast-send:hover{opacity:.85}
.comment-fast-send:active{opacity:.7}
.comment-reply-prefix{color:#86868b;font-size:13px}
.comment-reply-target{color:#0077b6;font-weight:700;font-size:13px}
body.dark .comments-panel{background:#1c1c1e}
body.dark .comment-empty{color:#8e8e93}
body.dark .comments-input-area{border-top-color:#38383a}
body.dark .comment-fast-input{background:#2c2c2e;border-color:#48484a;color:#f5f5f7}
body.dark .comment-fast-input:focus{border-color:#0a84ff}
body.dark .comment-fast-input::placeholder{color:#636366}
body.dark .comment-fast-send{background:#0a84ff}
body.dark .comment-reply-prefix{color:#8e8e93}
body.dark .comment-reply-target{color:#0a84ff}