/* ===== Trelio v1.0 ===== */
:root{--primary:#6366f1;--primary-hover:#4f46e5;--bg:#ffffff;--bg2:#f8fafc;--bg3:#f1f5f9;--text:#0f172a;--text2:#475569;--text3:#94a3b8;--border:#e2e8f0;--danger:#ef4444;--success:#22c55e;--radius:12px;--shadow:0 1px 3px rgba(0,0,0,.08)}
[data-theme="dark"],.theme-dark{--primary:#818cf8;--primary-hover:#6366f1;--bg:#0f172a;--bg2:#1e293b;--bg3:#334155;--text:#f1f5f9;--text2:#94a3b8;--text3:#64748b;--border:#334155;--shadow:0 1px 3px rgba(0,0,0,.3)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg2);color:var(--text);line-height:1.5;transition:background .2s,color .2s}
a{color:var(--primary);text-decoration:none}

/* Nav */
nav{position:sticky;top:0;z-index:100;background:var(--bg);border-bottom:1px solid var(--border);backdrop-filter:blur(12px);background:rgba(255,255,255,.85)}
[data-theme="dark"] nav,[data-theme="dark"].theme-dark nav{background:rgba(15,23,42,.85)}
.nav-inner{max-width:680px;margin:0 auto;padding:0 16px;height:56px;display:flex;align-items:center;gap:12px}
.nav-brand{display:flex;align-items:center;gap:8px;color:var(--text);font-weight:700;font-size:1.15rem;flex-shrink:0}
.nav-title{background:linear-gradient(135deg,var(--primary),#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav-search{flex:1;max-width:280px;position:relative}
.search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--text3)}
.nav-search input{width:100%;padding:7px 12px 7px 32px;border:1px solid var(--border);border-radius:20px;background:var(--bg2);color:var(--text);font-size:.88rem;outline:none;transition:border .2s}
.nav-search input:focus{border-color:var(--primary)}
.nav-links{display:flex;gap:4px}
.nav-link{padding:6px 12px;border-radius:8px;color:var(--text2);font-size:.88rem;font-weight:500;transition:all .15s}
.nav-link:hover{background:var(--bg3);color:var(--text)}
.nav-link.active{color:var(--primary);background:rgba(99,102,241,.08)}
.nav-right{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-icon-btn{width:36px;height:36px;border:none;background:transparent;color:var(--text2);border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}
.nav-icon-btn:hover{background:var(--bg3);color:var(--text)}

/* Theme icons */
.theme-icon-light{display:block}.theme-icon-dark{display:none}
.theme-dark .theme-icon-light,[data-theme="dark"] .theme-icon-light{display:none}
.theme-dark .theme-icon-dark,[data-theme="dark"] .theme-icon-dark{display:block}

/* Buttons */
.btn{padding:8px 18px;border:none;border-radius:8px;font-size:.88rem;font-weight:600;cursor:pointer;transition:all .15s;display:inline-flex;align-items:center;gap:6px}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}
.btn-secondary{background:var(--bg3);color:var(--text)}.btn-secondary:hover{background:var(--border)}
.btn-sm{padding:5px 12px;font-size:.82rem}

.btn-follow{padding:5px 14px;border:1.5px solid var(--primary);background:transparent;color:var(--primary);border-radius:20px;font-size:.82rem;font-weight:600;cursor:pointer;transition:all .15s}
.btn-follow:hover{background:var(--primary);color:#fff}
.btn-follow.following{background:var(--bg3);color:var(--text2);border-color:var(--border)}

/* Main */
main{max-width:680px;margin:0 auto;padding:16px;min-height:calc(100vh - 56px)}

/* Feed */
.feed-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding:8px 0}
.feed-header h2{font-size:1.2rem;font-weight:700}
.sort-tabs{display:flex;gap:4px}
.sort-tab{padding:5px 14px;border:1px solid var(--border);border-radius:20px;background:transparent;color:var(--text2);font-size:.82rem;cursor:pointer;transition:all .15s}
.sort-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Thread Card */
.thread-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px;transition:all .15s;box-shadow:var(--shadow)}
.thread-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.08)}
.thread-header{display:flex;align-items:flex-start;gap:10px}
.thread-avatar{width:40px;height:40px;border-radius:50%;flex-shrink:0;overflow:hidden;background:var(--bg3)}
.thread-avatar img{width:100%;height:100%;object-fit:cover}
.thread-meta{flex:1;min-width:0}
.thread-displayname{font-weight:600;font-size:.92rem}
.thread-username{color:var(--text3);font-size:.82rem;margin-left:4px}
.thread-time{color:var(--text3);font-size:.78rem;margin-top:1px}
.thread-content{margin:10px 0;font-size:.95rem;line-height:1.55;word-wrap:break-word;white-space:pre-wrap}
.thread-hashtags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.hashtag-tag{background:rgba(99,102,241,.1);color:var(--primary);padding:2px 8px;border-radius:12px;font-size:.78rem;cursor:pointer}
.hashtag-tag:hover{background:rgba(99,102,241,.2)}
.hashtag{color:var(--primary);cursor:pointer}
.hashtag:hover{text-decoration:underline}
.thread-actions{display:flex;align-items:center;gap:16px;padding-top:8px;border-top:1px solid var(--border)}
.like-btn,.comment-btn,.view-count{display:flex;align-items:center;gap:4px;background:none;border:none;color:var(--text2);font-size:.85rem;cursor:pointer;padding:4px 0;transition:color .15s}
.like-btn:hover,.comment-btn:hover{color:var(--primary)}
.like-btn.liked{color:#ef4444}
.like-btn.liked .like-icon svg{fill:#ef4444}
.like-btn.animate{animation:pop .3s ease}
@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.3)}100%{transform:scale(1)}}
.thread-delete{margin-left:auto;background:none;border:none;color:var(--text3);cursor:pointer;padding:4px;border-radius:6px;transition:all .15s}
.thread-delete:hover{color:var(--danger);background:rgba(239,68,68,.1)}

/* Comments */
.comment{padding:12px 0;border-bottom:1px solid var(--border)}
.comment:last-child{border:none}
.comment-header{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.comment-avatar{width:28px;height:28px;border-radius:50%;overflow:hidden;background:var(--bg3)}
.comment-avatar img{width:100%;height:100%;object-fit:cover}
.comment-displayname{font-weight:600;font-size:.85rem}
.comment-username{color:var(--text3);font-size:.78rem}
.comment-time{color:var(--text3);font-size:.75rem;margin-left:auto}
.comment-content{font-size:.9rem;line-height:1.5;padding-left:36px}
.comment-actions{padding-left:36px;margin-top:4px}
.comment-delete-btn{background:none;border:none;color:var(--text3);font-size:.78rem;cursor:pointer;padding:2px 6px;border-radius:4px}
.comment-delete-btn:hover{color:var(--danger);background:rgba(239,68,68,.08)}
.comment-input{display:flex;gap:8px;align-items:flex-start;padding:12px 0 0;border-top:1px solid var(--border)}
.comment-input textarea{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg2);color:var(--text);font-size:.88rem;resize:none;outline:none;font-family:inherit}
.comment-input textarea:focus{border-color:var(--primary)}

/* Profile */
.profile-header{text-align:center;padding:24px 0;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;padding:24px}
.profile-avatar{width:80px;height:80px;border-radius:50%;margin:0 auto 12px;overflow:hidden;border:3px solid var(--primary);background:var(--bg3)}
.profile-avatar img{width:100%;height:100%;object-fit:cover}
.profile-displayname{font-size:1.3rem;font-weight:700}
.profile-username{color:var(--text3);font-size:.9rem}
.profile-bio{color:var(--text2);font-size:.9rem;margin-top:8px;max-width:400px;margin-left:auto;margin-right:auto}
.profile-stats{display:flex;justify-content:center;gap:24px;margin-top:16px}
.profile-stat-num{font-size:1.1rem;font-weight:700}
.profile-stat-label{font-size:.78rem;color:var(--text3)}
.profile-actions{margin-top:16px}

/* People */
.people-grid{display:grid;gap:12px}
.people-card{display:flex;align-items:center;gap:12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:14px;transition:all .15s}
.people-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.08)}
.people-avatar{width:48px;height:48px;border-radius:50%;overflow:hidden;flex-shrink:0;background:var(--bg3)}
.people-avatar img{width:100%;height:100%;object-fit:cover}
.people-info{flex:1;min-width:0}
.people-name{font-weight:600;font-size:.92rem}
.people-username{color:var(--text3);font-size:.82rem}
.people-bio{color:var(--text2);font-size:.82rem;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Search */
.user-result{display:flex;align-items:center;gap:12px;padding:10px;border-radius:8px;cursor:pointer;transition:background .15s}
.user-result:hover{background:var(--bg3)}
.user-result-avatar{width:36px;height:36px;border-radius:50%;overflow:hidden;background:var(--bg3)}
.user-result-avatar img{width:100%;height:100%;object-fit:cover}
.user-result-name{font-weight:600;font-size:.9rem}
.user-result-username{color:var(--text3);font-size:.82rem}

/* Back btn */
.back-btn{display:inline-flex;align-items:center;gap:4px;color:var(--text2);font-size:.85rem;padding:6px 10px;border:none;background:none;cursor:pointer;border-radius:6px;transition:all .15s;margin-bottom:8px}
.back-btn:hover{background:var(--bg3);color:var(--text)}

/* Empty */
.empty-state{text-align:center;padding:48px 20px;color:var(--text3)}
.empty-icon{font-size:2.5rem;margin-bottom:12px}
.empty-state h3{color:var(--text);font-size:1.1rem;margin-bottom:6px}

/* Modal */
.modal-overlay{display:none;position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);justify-content:center;align-items:center;padding:16px}
.modal-overlay.open{display:flex}
.modal{background:var(--bg);border-radius:var(--radius);width:100%;max-width:480px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.15)}
.modal-large{max-width:560px}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}
.modal-header h3{font-size:1rem;font-weight:700}
.modal-close{width:32px;height:32px;border:none;background:var(--bg3);border-radius:8px;font-size:1.2rem;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center}
.modal-body{padding:16px 20px}
.modal-footer{padding:12px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:8px}
.modal-body textarea,.modal-body input[type=text]{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:var(--bg2);color:var(--text);font-size:.9rem;font-family:inherit;resize:none;outline:none;transition:border .15s}
.modal-body textarea:focus,.modal-body input[type=text]:focus{border-color:var(--primary)}

/* Post info */
.post-info{text-align:right;font-size:.78rem;color:var(--text3);margin-top:6px}
.form-label{display:block;font-size:.82rem;font-weight:600;color:var(--text2);margin-bottom:6px;margin-top:12px}

/* Settings */
.settings-body .settings-section{margin-bottom:16px}
.settings-body h4{font-size:.82rem;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}
.settings-item{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border)}
.settings-item:last-child{border:none}
.settings-item.clickable{cursor:pointer;transition:color .15s}
.settings-item.clickable:hover{color:var(--primary)}
.settings-sub{font-size:.78rem;color:var(--text3)}

/* Toggle */
.toggle-switch{position:relative;width:44px;height:24px;display:inline-block}
.toggle-switch input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:var(--bg3);border-radius:24px;cursor:pointer;transition:background .2s}
.toggle-slider::before{content:'';position:absolute;width:18px;height:18px;border-radius:50%;background:#fff;top:3px;left:3px;transition:transform .2s}
.toggle-switch input:checked+.toggle-slider{background:var(--primary)}
.toggle-switch input:checked+.toggle-slider::before{transform:translateX(20px)}

/* Toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(100px);background:var(--text);color:var(--bg);padding:10px 20px;border-radius:8px;font-size:.88rem;z-index:300;transition:transform .3s;pointer-events:none}
.toast.show{transform:translateX(-50%) translateY(0)}

/* FAB */
.fab{position:fixed;bottom:24px;right:24px;width:52px;height:52px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;box-shadow:0 4px 16px rgba(99,102,241,.4);display:none;align-items:center;justify-content:center;transition:all .2s;z-index:50}
.fab.visible{display:flex}
.fab:hover{transform:scale(1.08);box-shadow:0 6px 20px rgba(99,102,241,.5)}

/* Load more */
.load-more{text-align:center;padding:16px}
.load-more button{padding:8px 24px;border:1px solid var(--border);border-radius:20px;background:var(--bg);color:var(--text2);cursor:pointer;font-size:.88rem;transition:all .15s}
.load-more button:hover{border-color:var(--primary);color:var(--primary)}

/* Skeleton */
.skeleton{background:linear-gradient(90deg,var(--bg3) 25%,var(--bg2) 50%,var(--bg3) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:8px}
.skeleton-card{height:120px;margin-bottom:12px}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* User menu */
.user-menu{position:relative}
.user-avatar-sm{width:32px;height:32px;border-radius:50%;overflow:hidden;cursor:pointer;border:2px solid var(--border);transition:border .15s;background:var(--bg3)}
.user-avatar-sm:hover{border-color:var(--primary)}
.user-avatar-sm img{width:100%;height:100%;object-fit:cover}
.user-dropdown{position:absolute;right:0;top:42px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);min-width:180px;box-shadow:0 8px 24px rgba(0,0,0,.12);z-index:150;display:none;overflow:hidden}
.user-dropdown.open{display:block}
.user-dropdown a,.user-dropdown button{display:flex;align-items:center;gap:8px;width:100%;padding:10px 16px;border:none;background:none;color:var(--text);font-size:.88rem;cursor:pointer;text-align:left;transition:background .1s}
.user-dropdown a:hover,.user-dropdown button:hover{background:var(--bg3)}
.divider{height:1px;background:var(--border);margin:4px 0}

/* Responsive */
@media(max-width:640px){
  .nav-links{display:none}
  .nav-search{max-width:180px}
  .feed-header{flex-direction:column;align-items:flex-start;gap:8px}
}
.auth-tabs{display:flex;gap:0;margin-bottom:16px;border:1px solid var(--border);border-radius:8px;overflow:hidden}
.auth-tab{flex:1;padding:10px;border:none;background:var(--bg2);color:var(--text2);font-size:.88rem;font-weight:600;cursor:pointer;transition:all .15s}
.auth-tab.active{background:var(--primary);color:#fff}
.auth-form{display:flex;flex-direction:column;gap:10px}
.auth-form input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:var(--bg2);color:var(--text);font-size:.9rem;outline:none;transition:border .15s}
.auth-form input:focus{border-color:var(--primary)}
.auth-form .btn{width:100%;justify-content:center}
.auth-divider{text-align:center;color:var(--text3);font-size:.82rem;margin:12px 0;position:relative}
.auth-divider::before,.auth-divider::after{content:'';position:absolute;top:50%;width:40%;height:1px;background:var(--border)}
.auth-divider::before{left:0}.auth-divider::after{right:0}
.auth-error{color:var(--danger);font-size:.82rem;text-align:center;padding:8px;background:rgba(239,68,68,.08);border-radius:6px;display:none}
.auth-error.show{display:block}