/* ═══════════════════════════════════════════════════════════
   Nova — Premium Social Media Styles
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg-main: #06060a; --bg-elevated: #0d0d14; --bg-panel: rgba(16,16,24,0.9); --bg-card: rgba(20,20,32,0.92);
  --accent-primary: #7c3aed; --accent-secondary: #ec4899; --accent-tertiary: #06b6d4;
  --accent-success: #10b981; --accent-warning: #f59e0b; --accent-danger: #ef4444;
  --border: rgba(255,255,255,0.06); --border-hover: rgba(255,255,255,0.12);
  --text-primary: #f0f0f5; --text-secondary: #8b8b9e; --text-tertiary: #5a5a6e;
  --gradient-primary: linear-gradient(135deg, #7c3aed, #ec4899);
  --gradient-secondary: linear-gradient(135deg, #ec4899, #f59e0b);
  --glow-purple: rgba(124,58,237,0.35); --glow-pink: rgba(236,72,153,0.35);
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --radius-sm: 8px; --radius-md: 12px; --radius-lg: 20px; --radius-xl: 28px; --radius-full: 9999px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.2); --shadow-md: 0 8px 24px rgba(0,0,0,0.35); --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
  --sidebar-w: 280px; --trending-w: 300px;
  --t-fast: 0.15s ease; --t-norm: 0.25s ease; --t-bounce: 0.4s cubic-bezier(0.68,-0.55,0.265,1.55);
}

/* ─── Reset ─── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg-main);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;overflow:hidden;min-height:100vh}
a{color:inherit;text-decoration:none} button{border:none;background:none;font:inherit;cursor:pointer;color:inherit}
input,textarea,select{font:inherit;color:inherit}
::selection{background:rgba(124,58,237,0.35);color:#fff}
:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}
::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.08);border-radius:99px}::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.15)}

/* ─── Keyframes ─── */
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes fadeOut{from{opacity:1}to{opacity:0}}
@keyframes slideUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideDown{from{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:translateY(0)}}
@keyframes scaleIn{0%{opacity:0;transform:scale(.92)}60%{transform:scale(1.02)}100%{opacity:1;transform:scale(1)}}
@keyframes shimmer{0%{background-position:-600px 0}100%{background-position:600px 0}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes heartPop{0%{transform:scale(0);opacity:0}50%{transform:scale(1.3);opacity:1}70%{transform:scale(.9)}100%{transform:scale(1);opacity:1}}
@keyframes heartFly{0%{opacity:1;transform:translate(0,0) scale(1)}100%{opacity:0;transform:translate(var(--tx),var(--ty)) scale(.3)}}
@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}
@keyframes typingBounce{0%,60%,100%{transform:translateY(0)}30%{transform:translateY(-5px)}}
@keyframes achieveSlide{0%{opacity:0;transform:translateX(80px) scale(.9)}100%{opacity:1;transform:translateX(0) scale(1)}}
@keyframes ripple{0%{transform:scale(0);opacity:.5}100%{transform:scale(3);opacity:0}}
@keyframes shake{0%,100%{transform:translateX(0)}20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}

/* ─── Utility ─── */
.glow-text{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-size:200% 200%;animation:gradientShift 4s ease infinite}
.glass{background:var(--bg-card);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-lg);transition:border-color var(--t-norm),box-shadow var(--t-norm)}
.glass:hover{border-color:var(--border-hover)}
.shake{animation:shake .5s ease}

/* ─── Buttons ─── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 22px;border-radius:var(--radius-full);font-weight:600;font-size:14px;transition:all var(--t-fast);position:relative;overflow:hidden;white-space:nowrap}
.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 16px var(--glow-purple)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px var(--glow-purple)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px var(--glow-purple)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-secondary{background:rgba(255,255,255,0.05);border:1px solid var(--border-hover);color:var(--text-primary)}
.btn-secondary:hover{background:rgba(255,255,255,0.08);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text-secondary);padding:8px 16px}
.btn-ghost:hover{background:rgba(255,255,255,0.05);color:var(--text-primary)}
.btn-danger{background:rgba(239,68,68,0.12);color:var(--accent-danger);border:1px solid rgba(239,68,68,0.2)}
.btn-danger:hover{background:var(--accent-danger);color:#fff}
.btn-sm{padding:6px 14px;font-size:13px}
.btn-xs{padding:4px 10px;font-size:12px}
.btn-icon{padding:8px;width:36px;height:36px;border-radius:50%}
.btn-full{width:100%}

/* ─── Inputs ─── */
.input{width:100%;padding:12px 16px;background:rgba(0,0,0,0.3);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;outline:none;transition:border-color var(--t-fast),box-shadow var(--t-fast)}
.input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(124,58,237,0.12)}
.input-select{appearance:none;cursor:pointer;padding-right:32px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b8b9e' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:12px}
.input-group{position:relative;margin-bottom:14px}
.input-group .input{padding-left:44px}
.input-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-tertiary);font-size:14px;pointer-events:none}
textarea.input{resize:vertical;min-height:auto}

/* ─── Avatars ─── */
.avatar{width:40px;height:40px;border-radius:50%;background:var(--gradient-primary);display:flex;justify-content:center;align-items:center;font-weight:700;font-size:16px;flex-shrink:0;color:#fff}
.avatar-xs{width:28px;height:28px;font-size:11px}
.avatar-sm{width:34px;height:34px;font-size:14px}
.avatar-xl{width:88px;height:88px;font-size:32px}
.gradient-border{box-shadow:0 0 0 3px var(--bg-card),0 0 0 5px var(--accent-primary)}

/* ─── Notification Badge ─── */
.notif-badge{display:none;position:absolute;top:4px;right:4px;background:var(--accent-danger);color:#fff;font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:9px;align-items:center;justify-content:center;padding:0 4px;line-height:1}
.online-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-success);display:inline-block;animation:pulseDot 2s ease-in-out infinite}

/* ═══════════════ AUTH SCREEN ═══════════════ */
#auth-screen{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;background:var(--bg-main);background-image:radial-gradient(ellipse at 20% 40%,rgba(124,58,237,0.15),transparent 50%),radial-gradient(ellipse at 80% 60%,rgba(236,72,153,0.12),transparent 50%)}
.auth-particles{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.auth-box{width:100%;max-width:420px;padding:40px 36px;text-align:center;animation:scaleIn .5s ease forwards}
.auth-logo{margin-bottom:8px}
.auth-logo-icon{font-size:36px;color:var(--accent-primary);margin-bottom:8px}
.auth-logo h1{font-size:44px;font-weight:900;margin:0}
.auth-tagline{color:var(--text-secondary);margin-bottom:28px;font-size:15px}
.auth-form{text-align:left}
.auth-form .btn{width:100%;margin-top:10px;padding:13px}
.auth-footer{margin-top:24px;color:var(--text-tertiary);font-size:12px}
#auth-error{display:none;color:var(--accent-danger);font-size:13px;margin-bottom:14px;background:rgba(239,68,68,0.08);border:1px solid rgba(239,68,68,0.15);border-radius:var(--radius-md);padding:10px 14px;text-align:center}

/* ═══════════════ MAIN LAYOUT ═══════════════ */
#app-screen{display:none;height:100vh;overflow:hidden}
#app-screen.visible{display:flex}

/* ─── Sidebar ─── */
.sidebar{width:var(--sidebar-w);display:flex;flex-direction:column;border-right:1px solid var(--border);background:var(--bg-panel);backdrop-filter:blur(20px);overflow:hidden;flex-shrink:0;z-index:100}
.sidebar-inner{display:flex;flex-direction:column;height:100%;padding:20px 16px;overflow-y:auto}
.brand{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:800;padding:4px 8px;margin-bottom:24px}
.brand-icon{color:var(--accent-primary);font-size:22px}
.search-wrapper{position:relative;margin-bottom:20px}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-tertiary);font-size:13px;pointer-events:none}
.search-input{padding-left:38px!important;font-size:13px!important;border-radius:var(--radius-full)!important}
.search-results-dropdown{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-panel);backdrop-filter:blur(24px);border:1px solid var(--border);border-radius:var(--radius-md);margin-top:4px;max-height:360px;overflow-y:auto;z-index:200;box-shadow:var(--shadow-lg)}
.search-section-label{padding:10px 14px;font-size:11px;color:var(--text-tertiary);font-weight:700;text-transform:uppercase;letter-spacing:.5px;border-top:1px solid var(--border)}
.search-section-label:first-child{border-top:none}
.search-result-item{display:flex;align-items:center;gap:10px;padding:10px 14px;transition:background var(--t-fast);font-size:14px}
.search-result-item:hover{background:rgba(255,255,255,0.04)}
.search-post-info{display:flex;flex-direction:column;gap:2px;min-width:0}
.search-post-author{font-size:12px;color:var(--text-secondary);font-weight:600}
.search-post-snippet{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.search-empty{padding:20px;text-align:center;color:var(--text-secondary);font-size:14px}

.nav-section{display:flex;flex-direction:column;gap:2px}
.nav-item{display:flex;align-items:center;gap:14px;padding:11px 16px;border-radius:var(--radius-md);color:var(--text-secondary);font-weight:600;font-size:14px;transition:all var(--t-fast);position:relative;text-decoration:none}
.nav-item i{font-size:18px;width:22px;text-align:center;transition:transform var(--t-fast)}
.nav-item:hover{background:rgba(255,255,255,0.04);color:var(--text-primary);transform:translateX(3px)}
.nav-item:hover i{transform:scale(1.1)}
.nav-item.active{background:rgba(124,58,237,0.08);color:var(--accent-primary)}
.nav-item.active::before{content:'';position:absolute;left:0;top:15%;height:70%;width:3px;background:var(--gradient-primary);border-radius:0 4px 4px 0;box-shadow:0 0 12px var(--glow-purple)}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-secondary);position:absolute;right:12px;top:50%;transform:translateY(-50%);animation:pulseDot 2s ease-in-out infinite}
.sidebar-spacer{flex:1}
.sidebar-bottom{border-top:1px solid var(--border);padding-top:12px;margin-top:8px}
.dopamine-section{padding:8px 12px;margin-bottom:8px}
.dopamine-label{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-secondary);margin-bottom:6px}
.dopamine-label i{color:var(--accent-secondary)}
.dopamine-percent{margin-left:auto;font-weight:700;color:var(--accent-secondary)}
.dopamine-bar{height:4px;background:rgba(255,255,255,0.06);border-radius:99px;overflow:hidden}
.dopamine-fill{height:100%;background:var(--gradient-secondary);border-radius:99px;transition:width .6s cubic-bezier(.22,1,.36,1);box-shadow:0 0 8px var(--glow-pink)}
.nav-profile-item{margin-top:4px}
.nav-profile-info{display:flex;flex-direction:column;min-width:0}
.nav-profile-name{font-size:14px;font-weight:600;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-profile-sub{font-size:11px;color:var(--text-tertiary)}
.nav-logout{color:var(--accent-danger)!important;margin-top:2px}
.nav-logout:hover{background:rgba(239,68,68,0.08)!important}

/* ─── Content Area ─── */
.content-area{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}
.content-area.chat-active{padding:0}
.view-container{overflow-y:auto;flex:1;padding:24px 32px}
.view-title{font-size:22px;font-weight:800;margin:0;display:flex;align-items:center;gap:10px}
.view-title i{color:var(--accent-primary);font-size:20px}
.view-subtitle{color:var(--text-secondary);font-size:14px;margin-top:4px}

/* ═══════════════ FEED ═══════════════ */
.feed-layout{display:flex;gap:28px;max-width:1100px;margin:0 auto}
.feed-main{flex:1;min-width:0;max-width:640px}
.feed-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.algo-select{width:auto!important;padding:8px 32px 8px 14px!important;background:rgba(0,0,0,0.4)!important;font-weight:600;color:var(--accent-primary);cursor:pointer;font-size:13px!important;border-radius:var(--radius-full)!important}

/* ─── Stories ─── */
.stories-strip{display:flex;gap:14px;margin-bottom:24px;overflow-x:auto;padding:4px;scrollbar-width:none}
.stories-strip::-webkit-scrollbar{display:none}
.story-bubble{display:flex;flex-direction:column;align-items:center;gap:6px;cursor:pointer;flex-shrink:0;width:76px}
.story-avatar-ring{width:68px;height:68px;border-radius:50%;padding:3px;background:var(--gradient-primary);transition:transform var(--t-fast);position:relative}
.story-create-ring{background:transparent!important;border:2px dashed var(--border-hover)}
.story-bubble:hover .story-avatar-ring{transform:scale(1.08)}
.story-bubble:hover .story-create-ring{border-color:var(--accent-primary)}
.story-avatar{width:100%;height:100%;border-radius:50%;object-fit:cover;border:3px solid var(--bg-main);display:flex;align-items:center;justify-content:center;overflow:hidden}
.story-avatar img{width:100%;height:100%;object-fit:cover}
.story-create-avatar{background:var(--bg-elevated);color:var(--text-secondary);font-size:22px}
.story-label{font-size:11px;color:var(--text-secondary);text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;width:100%}
.story-caption-bar{align-items:center;gap:8px;padding:4px 8px;flex-shrink:0}
.story-caption-bar .input{width:140px;padding:6px 12px;font-size:12px;border-radius:var(--radius-full)}

/* ─── Create Post ─── */
.create-post{padding:16px 18px;margin-bottom:24px}
.create-post-header{display:flex;gap:12px;align-items:flex-start}
.create-post-input{flex:1;background:transparent;border:none;color:var(--text-primary);font-size:15px;outline:none;resize:none;overflow:hidden;line-height:1.5;padding:6px 0;font-family:var(--font)}
.create-post-input::placeholder{color:var(--text-tertiary)}
.create-post-input:focus{box-shadow:none}
.preview-wrapper{position:relative;margin:12px 0}
.create-post-preview{width:100%;max-height:300px;object-fit:cover;border-radius:var(--radius-md);border:1px solid var(--border)}
.preview-dismiss{position:absolute;top:8px;right:8px;width:28px;height:28px;border-radius:50%;background:rgba(0,0,0,0.7);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;cursor:pointer;border:none;transition:background var(--t-fast)}
.preview-dismiss:hover{background:var(--accent-danger)}
.poll-create-ui{border:1px solid var(--border);padding:14px;border-radius:var(--radius-md);margin:12px 0;display:flex;flex-direction:column;gap:8px}
.poll-create-header{font-size:13px;font-weight:600;color:var(--accent-primary);display:flex;align-items:center;gap:8px;margin-bottom:4px}
.poll-create-ui .input{padding:10px 14px}
.create-post-actions{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border);padding-top:12px;margin-top:12px}
.create-post-tools{display:flex;gap:4px}
.tool-btn{padding:8px 10px;border-radius:var(--radius-md);color:var(--text-secondary);font-size:17px;transition:all var(--t-fast);cursor:pointer;background:transparent;border:none}
.tool-btn:hover{color:var(--accent-primary);background:rgba(124,58,237,0.08);transform:scale(1.1)}
.create-post-right{display:flex;align-items:center;gap:12px}
.char-counter{font-size:12px;color:var(--text-tertiary);transition:color var(--t-fast)}

/* ─── Posts ─── */
.post{padding:18px;margin-bottom:20px;animation:slideUp .35s ease backwards}
.post:hover{box-shadow:var(--shadow-md);border-color:var(--border-hover)}
.post-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.post-avatar-link{text-decoration:none;flex-shrink:0}
.post-header-info{flex:1;min-width:0}
.post-author-line{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.post-author{font-weight:700;font-size:15px;color:var(--text-primary);text-decoration:none}
.post-author:hover{color:var(--accent-primary)}
.edited-badge{font-size:11px;color:var(--text-tertiary);font-style:italic;background:rgba(255,255,255,0.04);padding:1px 6px;border-radius:4px}
.community-badge{font-size:12px;color:var(--accent-primary);font-weight:600;display:inline-flex;align-items:center;gap:3px;background:rgba(124,58,237,0.08);padding:2px 8px;border-radius:var(--radius-full);text-decoration:none}
.community-badge:hover{background:rgba(124,58,237,0.15)}
.post-time{font-size:12px;color:var(--text-tertiary);text-decoration:none}
.post-time:hover{color:var(--text-secondary)}
.post-owner-actions{display:flex;gap:4px;margin-left:auto}
.post-content{font-size:15px;line-height:1.7;margin-bottom:12px;word-wrap:break-word;overflow-wrap:break-word}
.post-md p{margin:0 0 8px} .post-md p:last-child{margin:0}
.post-md a{color:var(--accent-secondary);text-decoration:none} .post-md a:hover{text-decoration:underline}
.post-md code{background:rgba(255,255,255,0.08);padding:2px 5px;border-radius:4px;font-family:'JetBrains Mono',monospace;font-size:13px}
.post-md pre{background:rgba(0,0,0,0.4);padding:14px;border-radius:var(--radius-md);overflow-x:auto;margin:8px 0}
.post-md pre code{background:none;padding:0}
.post-md blockquote{border-left:3px solid var(--accent-primary);margin:8px 0;padding-left:14px;color:var(--text-secondary)}
.post-md,.post-content{word-wrap:break-word;overflow-wrap:break-word;word-break:break-word}
.post-md pre,.post-md code{white-space:pre-wrap;word-break:break-word}
.show-more-btn{color:var(--text-secondary);font-weight:600;font-size:14px;background:none;border:none;cursor:pointer;margin-top:4px;padding:0}
.show-more-btn:hover{color:var(--accent-primary)}
.post-media-wrap{position:relative;border-radius:var(--radius-md);overflow:hidden;margin-bottom:12px;cursor:pointer}
.post-media{width:100%;max-height:480px;object-fit:cover;display:block;transition:transform .3s ease;border-radius:var(--radius-md)}
.post-media-wrap:hover .post-media{transform:scale(1.02)}
.post-video{width:100%;max-height:480px;border-radius:var(--radius-md);background:#000;margin-bottom:12px}
.repost-media{max-height:300px}
.repost-card{border:1px solid var(--border);padding:14px;border-radius:var(--radius-md);margin-top:12px;background:rgba(0,0,0,0.15)}
.repost-header{font-size:12px;color:var(--text-secondary);margin-bottom:10px;display:flex;align-items:center;gap:6px}
.repost-header a{color:var(--accent-secondary);font-weight:700}

/* ─── Post Actions ─── */
.post-actions{display:flex;align-items:center;gap:4px;border-top:1px solid var(--border);padding-top:12px;margin-top:8px}
.action-btn{display:flex;align-items:center;gap:6px;color:var(--text-secondary);font-size:13px;font-weight:500;padding:6px 12px;border-radius:var(--radius-full);transition:all var(--t-fast);cursor:pointer;background:transparent;border:none}
.action-btn i{font-size:17px;transition:transform var(--t-fast)}
.action-btn:hover{background:rgba(255,255,255,0.04);color:var(--text-primary)}
.action-btn:hover i{transform:scale(1.15)}
.action-btn.liked{color:var(--accent-secondary)}
.action-btn.liked i{animation:heartPop .4s ease}
.action-btn.liked:hover{background:rgba(236,72,153,0.08)}
.bookmark-btn.bookmarked{color:var(--accent-warning)}
.bookmark-btn{margin-left:auto}

/* ─── Poll ─── */
.poll-box{border:1px solid var(--border);padding:14px;border-radius:var(--radius-md);margin-top:12px;display:flex;flex-direction:column;gap:8px}
.poll-option-btn{width:100%;padding:10px 16px;border-radius:var(--radius-md);background:rgba(255,255,255,0.04);border:1px solid var(--border);color:var(--text-primary);font-weight:600;cursor:pointer;transition:all var(--t-fast);text-align:left}
.poll-option-btn:hover{background:rgba(124,58,237,0.1);border-color:var(--accent-primary)}
.poll-result{position:relative;background:rgba(255,255,255,0.03);border-radius:var(--radius-md);overflow:hidden;padding:10px 14px;display:flex;justify-content:space-between}
.poll-result-fill{position:absolute;top:0;left:0;bottom:0;background:rgba(124,58,237,0.15);transition:width .6s ease}
.poll-result-text,.poll-result-pct{position:relative;z-index:1;font-size:14px}
.poll-result.my-vote{font-weight:700;color:var(--accent-primary)}
.poll-meta{font-size:12px;color:var(--text-tertiary);margin-top:4px}

/* ─── Likes/Comments ─── */
.likes-list-container{background:rgba(0,0,0,0.3);padding:12px;border-radius:var(--radius-md);margin-top:8px;max-height:100px;overflow-y:auto;font-size:13px;border:1px solid var(--border)}
.likes-list-title{font-weight:700;color:var(--accent-secondary);margin-bottom:6px;font-size:12px}
.liker-link{display:block;padding:3px 0;color:var(--text-primary);text-decoration:none;font-weight:500}
.liker-link:hover{color:var(--accent-primary)}
.no-likes{color:var(--text-tertiary);font-size:12px}
.comments-section{margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}
.comment{display:flex;gap:10px;margin-bottom:12px}
.comment-avatar{flex-shrink:0;text-decoration:none}
.comment-body{flex:1;min-width:0}
.comment-header{display:flex;align-items:center;gap:8px;margin-bottom:3px}
.comment-author{font-weight:700;font-size:13px;color:var(--accent-secondary);text-decoration:none}
.comment-author:hover{text-decoration:underline}
.comment-time{font-size:11px;color:var(--text-tertiary)}
.comment-text{font-size:14px;line-height:1.5}
.comment-input-area{display:flex;gap:8px;align-items:center;margin-top:12px}
.comment-input{border-radius:var(--radius-full)!important;padding:8px 16px!important;font-size:13px!important;flex:1}
.view-all-comments{display:block;margin-top:8px;font-size:13px;color:var(--text-secondary);font-weight:600}
.view-all-comments:hover{color:var(--accent-primary)}

/* ─── FOMO Viewers ─── */
.fomo-viewers{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text-tertiary);padding:6px 0}
.fomo-viewers .live-dot{width:6px;height:6px;border-radius:50%;background:var(--accent-success);animation:pulseDot 2s ease-in-out infinite}

/* ═══════════════ TRENDING SIDEBAR ═══════════════ */
.trending-sidebar{width:var(--trending-w);flex-shrink:0;display:flex;flex-direction:column;gap:16px;padding-top:24px;position:sticky;top:0;max-height:100vh;overflow-y:auto}
.trending-card{padding:18px}
.trending-title{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.trending-title i{color:var(--accent-secondary)}
.trending-item{padding:10px 0;border-bottom:1px solid var(--border);cursor:pointer;transition:all var(--t-fast)}
.trending-item:last-child{border-bottom:none}
.trending-item:hover{padding-left:6px}
.trending-category{font-size:11px;color:var(--accent-primary);font-weight:600;text-transform:uppercase;letter-spacing:.3px}
.trending-topic{font-size:14px;font-weight:600;color:var(--text-primary);display:block;margin:2px 0}
.trending-meta{font-size:12px;color:var(--text-tertiary)}
.suggested-user{display:flex;align-items:center;gap:10px;padding:8px 0}
.suggested-user-link{display:flex;align-items:center;gap:10px;flex:1;text-decoration:none;color:var(--text-primary);font-weight:600;font-size:14px}
.suggested-user-link:hover{color:var(--accent-primary)}
.sidebar-footer-text{padding:16px 0;font-size:11px;color:var(--text-tertiary);text-align:center}

/* ═══════════════ EXPLORE ═══════════════ */
.explore-header{margin-bottom:20px}
.explore-search{position:relative;margin-top:14px}
.explore-search i{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-tertiary)}
.explore-search .input{padding-left:42px;border-radius:var(--radius-full)}
.explore-tabs{display:flex;gap:8px;margin-bottom:20px;overflow-x:auto;padding-bottom:4px}
.tab-btn{padding:8px 18px;border-radius:var(--radius-full);background:rgba(255,255,255,0.04);border:1px solid var(--border);color:var(--text-secondary);font-weight:600;font-size:13px;cursor:pointer;transition:all var(--t-fast);white-space:nowrap}
.tab-btn:hover{border-color:var(--border-hover);color:var(--text-primary)}
.tab-btn.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}
.explore-masonry{display:flex;flex-direction:column;gap:20px}

/* ═══════════════ CHAT ═══════════════ */
#chat-view{display:none;flex:1;flex-direction:row;min-height:0;border-radius:var(--radius-lg);overflow:hidden;margin:20px 28px}
.chat-users-panel{width:300px;display:flex;flex-direction:column;flex-shrink:0;border-right:1px solid var(--border);overflow:hidden}
.chat-users-header{display:flex;justify-content:space-between;align-items:center;padding:16px 18px;border-bottom:1px solid var(--border)}
.chat-users-header h3{font-size:16px;display:flex;align-items:center;gap:8px}
.chat-users-search{padding:10px 14px;border-bottom:1px solid var(--border)}
.chat-users-search .input{padding:8px 14px;font-size:13px;border-radius:var(--radius-full)}
.chat-users-list{overflow-y:auto;flex:1}
.chat-user-item{display:flex;align-items:center;gap:12px;padding:12px 16px;cursor:pointer;transition:background var(--t-fast);border-bottom:1px solid rgba(255,255,255,0.02)}
.chat-user-item:hover{background:rgba(255,255,255,0.03)}
.chat-user-item.active{background:rgba(124,58,237,0.08);border-left:3px solid var(--accent-primary)}
.chat-user-info{flex:1;min-width:0;display:flex;flex-direction:column}
.chat-user-name{font-weight:600;font-size:14px}
.chat-user-preview{font-size:12px;color:var(--text-tertiary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-box{flex:1;display:flex;flex-direction:column;min-height:0;background:var(--bg-elevated)}
.chat-header{display:flex;align-items:center;gap:12px;padding:14px 20px;border-bottom:1px solid var(--border);background:var(--bg-card)}
.chat-back-btn{display:none}
.chat-header-info{display:flex;flex-direction:column}
.chat-header-name{font-weight:700;font-size:15px}
.chat-header-status{font-size:12px;color:var(--text-secondary);display:flex;align-items:center;gap:6px}
.chat-messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:8px;min-height:0}
.chat-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;color:var(--text-tertiary);gap:8px;font-size:16px}
.chat-empty i{font-size:40px;opacity:.3}
.msg{max-width:72%;padding:10px 16px;font-size:14px;line-height:1.5;animation:slideUp .2s ease}
.msg.me{background:var(--gradient-primary);color:#fff;align-self:flex-end;border-radius:16px 16px 4px 16px;box-shadow:0 2px 10px var(--glow-purple)}
.msg.them{background:rgba(255,255,255,0.05);border:1px solid var(--border);align-self:flex-start;border-radius:16px 16px 16px 4px}
.msg-time{font-size:10px;opacity:.6;margin-top:4px}
.chat-input-area{display:flex;gap:8px;align-items:center;padding:12px 16px;border-top:1px solid var(--border);background:var(--bg-card)}
.chat-text-input{flex:1;border-radius:var(--radius-full)!important;padding:10px 18px!important}
.btn-send{background:var(--gradient-primary);color:#fff;box-shadow:0 2px 10px var(--glow-purple)}
.typing-indicator{display:flex;gap:4px;padding:10px 16px;background:rgba(255,255,255,0.04);border-radius:16px;align-self:flex-start;width:fit-content}
.typing-dot{width:7px;height:7px;border-radius:50%;background:var(--text-secondary);animation:typingBounce 1.4s ease-in-out infinite}
.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}

/* ═══════════════ PROFILE ═══════════════ */
#profile-view{max-width:680px;margin:0 auto;width:100%}
.profile-card{overflow:hidden;margin-bottom:20px}
.profile-cover{height:140px;background:var(--gradient-primary);position:relative}
.profile-cover-gradient{position:absolute;inset:0;background:linear-gradient(transparent 40%,var(--bg-card))}
.profile-info-section{display:flex;gap:20px;align-items:flex-end;padding:0 24px 20px;margin-top:-44px;position:relative}
.profile-avatar-wrap{flex-shrink:0}
.profile-details{flex:1;min-width:0}
.profile-username{font-size:22px;font-weight:800;margin:0 0 4px}
.profile-stats{display:flex;gap:20px;margin:10px 0 14px}
.profile-stat{display:flex;flex-direction:column;align-items:center;gap:2px}
.profile-stat strong{font-size:18px;font-weight:800;color:var(--text-primary)}
.profile-stat span{font-size:12px;color:var(--text-secondary)}
.profile-actions{display:flex;gap:8px}
.profile-tabs{display:flex;gap:0;margin-bottom:20px;border-bottom:1px solid var(--border)}
.profile-tabs .tab-btn{flex:1;text-align:center;border-radius:0;border:none;border-bottom:2px solid transparent;padding:12px;font-size:13px;background:transparent}
.profile-tabs .tab-btn.active{border-bottom-color:var(--accent-primary);color:var(--accent-primary)}

/* ═══════════════ COMMUNITIES ═══════════════ */
.community-header{display:flex;justify-content:space-between;align-items:center;padding:20px;margin-bottom:20px}
.community-header-content{flex:1}
.community-subtitle{color:var(--text-secondary);font-size:14px;margin-top:4px}
.communities-grid{display:flex;flex-direction:column;gap:10px}
.community-section-label{font-size:13px;color:var(--text-secondary);font-weight:700;text-transform:uppercase;letter-spacing:.5px;margin:12px 0 8px;padding-left:4px}
.community-card{display:flex;align-items:center;gap:14px;padding:14px 18px;text-decoration:none;color:var(--text-primary);transition:all var(--t-fast)}
.community-card:hover{transform:translateX(4px);border-color:var(--border-hover)}
.community-card.joined{border-left:3px solid var(--accent-primary)}
.community-card-icon{width:40px;height:40px;border-radius:var(--radius-md);background:rgba(124,58,237,0.1);display:flex;align-items:center;justify-content:center;color:var(--accent-primary);font-size:16px}
.community-card-info{flex:1;min-width:0}
.community-card-name{font-weight:700;font-size:15px;display:block}
.community-card-meta{font-size:12px;color:var(--text-tertiary)}
.community-card-arrow{color:var(--text-tertiary);font-size:12px;transition:transform var(--t-fast)}
.community-card:hover .community-card-arrow{transform:translateX(4px);color:var(--accent-primary)}

/* ═══════════════ BOOKMARKS ═══════════════ */
.bookmarks-header{margin-bottom:20px}

/* ═══════════════ MARKETPLACE ═══════════════ */
.mp-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px}
.mp-filters{display:flex;gap:10px;margin-bottom:20px;flex-wrap:wrap}
.mp-search-wrap{position:relative;flex:1;min-width:200px}
.mp-search-wrap i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-tertiary);font-size:13px}
.mp-search-wrap .input{padding-left:38px;border-radius:var(--radius-full)}
.mp-filters .input-select{width:auto;min-width:140px}
.mp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.mp-card{overflow:hidden;cursor:pointer;transition:all var(--t-fast)}
.mp-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md),0 0 20px rgba(124,58,237,0.1);border-color:var(--border-hover)}
.mp-card-img{width:100%;height:180px;object-fit:cover;display:block;border-bottom:1px solid var(--border)}
.mp-card-img-placeholder{display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.2);color:var(--text-tertiary);font-size:28px}
.mp-card-body{padding:12px 14px}
.mp-card-title{font-weight:700;font-size:14px;margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mp-card-price{font-size:18px;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.mp-card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-size:12px;color:var(--text-tertiary)}
.mp-card-seller{font-weight:600}
.mp-detail-back{margin-bottom:16px}
.mp-detail-card{overflow:hidden}
.mp-detail-img{width:100%;max-height:400px;object-fit:cover;display:block;border-bottom:1px solid var(--border)}
.mp-detail-body{padding:24px}
.mp-detail-title{font-size:22px;font-weight:800;margin:0 0 8px}
.mp-detail-price{font-size:28px;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.mp-detail-currency{font-size:14px;color:var(--text-secondary);-webkit-text-fill-color:var(--text-secondary)}
.mp-detail-meta{font-size:13px;color:var(--text-secondary);margin:8px 0 16px;display:flex;align-items:center;gap:6px}
.mp-detail-desc{font-size:15px;line-height:1.7;margin-bottom:20px;white-space:pre-wrap;color:var(--text-primary)}
.mp-detail-seller-bar{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border);padding-top:18px}
.mp-detail-seller{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-primary)}
.mp-detail-seller:hover{color:var(--accent-primary)}
.mp-detail-seller-name{font-weight:700;font-size:14px}
.mp-detail-seller-label{font-size:12px;color:var(--text-secondary)}
.mp-detail-actions{display:flex;gap:8px}

/* ═══════════════ NOTIFICATIONS PANEL ═══════════════ */
.notifications-panel{position:fixed;top:0;right:-380px;width:360px;height:100vh;background:var(--bg-panel);backdrop-filter:blur(24px);border-left:1px solid var(--border);z-index:150;display:flex;flex-direction:column;transition:right .3s ease;box-shadow:var(--shadow-lg)}
.notifications-panel.open{right:0}
.notifications-header{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--border)}
.notifications-header h3{font-size:16px;display:flex;align-items:center;gap:8px}
.notifications-list{flex:1;overflow-y:auto}
.notif-item{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid rgba(255,255,255,0.02);transition:background var(--t-fast)}
.notif-item:hover{background:rgba(255,255,255,0.03)}
.notif-content{flex:1;min-width:0}
.notif-text{font-size:13px;line-height:1.4}
.notif-text strong{color:var(--text-primary)}

/* ═══════════════ MODALS ═══════════════ */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.8);z-index:1000;align-items:center;justify-content:center;backdrop-filter:blur(4px)}
.modal-content{width:90%;max-width:520px;padding:0;max-height:90vh;overflow-y:auto}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--border)}
.modal-header h3{font-size:18px;display:flex;align-items:center;gap:8px}
.modal-body{padding:24px;display:flex;flex-direction:column;gap:14px}
.modal-row{display:flex;gap:12px}
.modal-row .input{flex:1}
.file-upload-area{display:flex;align-items:center;gap:12px}
.file-upload-btn{display:flex;align-items:center;gap:8px;padding:10px 18px;border-radius:var(--radius-md);background:rgba(255,255,255,0.05);border:1px dashed var(--border-hover);cursor:pointer;color:var(--text-secondary);font-size:13px;transition:all var(--t-fast)}
.file-upload-btn:hover{background:rgba(124,58,237,0.08);border-color:var(--accent-primary);color:var(--accent-primary)}
.file-name{font-size:12px;color:var(--text-tertiary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ═══════════════ STORY MODAL ═══════════════ */
.story-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.95);z-index:2000;align-items:center;justify-content:center;flex-direction:column}
.story-progress-bar{position:absolute;top:0;left:0;height:4px;background:var(--gradient-primary);width:0%;transition:width .1s linear;z-index:10;box-shadow:0 0 8px var(--glow-purple)}
.story-close-btn{position:absolute;top:20px;right:24px;font-size:24px;color:#fff;cursor:pointer;z-index:10;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,0.1);transition:background var(--t-fast)}
.story-close-btn:hover{background:rgba(255,255,255,0.2)}
.story-navigation{position:absolute;inset:0;z-index:5}
.story-nav-left,.story-nav-right{position:absolute;top:60px;bottom:0;width:50%;cursor:pointer}
.story-nav-left{left:0}.story-nav-right{right:0}
.story-content{display:flex;flex-direction:column;align-items:center;z-index:3;position:relative}
.story-author-header{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:16px}
.story-time{font-size:12px;color:rgba(255,255,255,0.5);font-weight:400}
.story-modal-img{max-width:90%;max-height:75vh;border-radius:var(--radius-lg);box-shadow:0 8px 40px rgba(0,0,0,0.5);object-fit:contain}
.story-caption-display{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);width:80%;max-width:400px;padding:12px 18px;background:rgba(0,0,0,0.6);backdrop-filter:blur(8px);border-radius:var(--radius-md);color:#fff;font-size:14px;text-align:center;z-index:10;pointer-events:none}

/* ═══════════════ DOUBLE TAP HEART ═══════════════ */
.double-tap-heart{position:fixed;width:80px;height:80px;z-index:50;pointer-events:none;align-items:center;justify-content:center;font-size:60px;color:var(--accent-secondary)}
.double-tap-heart.pop i{animation:heartPop .7s ease forwards}
.double-tap-heart i{opacity:0}

/* ═══════════════ REACTION PICKER ═══════════════ */
.reaction-picker{position:fixed;background:var(--bg-panel);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-full);padding:8px 12px;gap:6px;box-shadow:var(--shadow-lg);z-index:100}
.reaction-picker button{font-size:22px;background:none;border:none;cursor:pointer;padding:4px;transition:transform var(--t-fast);border-radius:50%}
.reaction-picker button:hover{transform:scale(1.4)}

/* ═══════════════ LIGHTBOX ═══════════════ */
.lightbox-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.92);z-index:2000;align-items:center;justify-content:center;animation:fadeIn .2s ease;cursor:pointer}
.lightbox-close{position:absolute;top:20px;right:24px;font-size:24px;color:#fff;cursor:pointer;width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,0.1);transition:background var(--t-fast);z-index:10}
.lightbox-close:hover{background:rgba(255,255,255,0.2)}
.lightbox-img{max-width:92%;max-height:90vh;border-radius:var(--radius-md);object-fit:contain;box-shadow:0 8px 40px rgba(0,0,0,0.5)}

/* ═══════════════ LOADING / SKELETONS ═══════════════ */
.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
.spinner-sm{width:18px;height:18px;border-width:2px}
.reward-loading{text-align:center;padding:40px 20px}
.reward-loading .spinner{margin-bottom:14px}
.reward-msg{color:var(--accent-secondary);font-weight:700;font-size:15px;transition:opacity .2s;min-height:20px}
.reward-sub{color:var(--text-tertiary);font-size:12px;margin-top:4px}
.skeleton-post{padding:18px;margin-bottom:20px;border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--bg-card)}
.skeleton-header{display:flex;gap:12px;align-items:center;margin-bottom:14px}
.skeleton-lines{flex:1;display:flex;flex-direction:column;gap:6px}
.skeleton-line{height:12px;border-radius:6px;background:linear-gradient(90deg,rgba(255,255,255,0.03) 25%,rgba(255,255,255,0.07) 50%,rgba(255,255,255,0.03) 75%);background-size:600px 100%;animation:shimmer 1.5s ease-in-out infinite}
.skeleton-line.w40{width:40%}.skeleton-line.w60{width:60%}.skeleton-line.w80{width:80%}
.skeleton-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(90deg,rgba(255,255,255,0.03) 25%,rgba(255,255,255,0.07) 50%,rgba(255,255,255,0.03) 75%);background-size:600px 100%;animation:shimmer 1.5s ease-in-out infinite;flex-shrink:0}
.skeleton-media{width:100%;height:180px;border-radius:var(--radius-md);margin-top:12px;background:linear-gradient(90deg,rgba(255,255,255,0.02) 25%,rgba(255,255,255,0.05) 50%,rgba(255,255,255,0.02) 75%);background-size:600px 100%;animation:shimmer 1.5s ease-in-out infinite}

/* ─── Feed Bottom / New Posts ─── */
.feed-bottom-loader{text-align:center;padding:20px;color:var(--text-tertiary);display:flex;align-items:center;justify-content:center;gap:8px}
.end-of-feed{font-weight:600;color:var(--text-tertiary)}
.new-posts-bar{position:fixed;top:16px;left:50%;transform:translateX(-50%) translateY(-60px);z-index:800;background:var(--gradient-primary);color:#fff;padding:10px 24px;border-radius:var(--radius-full);font-weight:700;font-size:14px;cursor:pointer;box-shadow:0 4px 24px var(--glow-purple);transition:transform .4s cubic-bezier(.34,1.56,.64,1);pointer-events:none;white-space:nowrap;display:flex;align-items:center;gap:8px}
.new-posts-bar.visible{transform:translateX(-50%) translateY(0);pointer-events:auto}

/* ─── Scroll / Session ─── */
.scroll-depth-bar{position:fixed;top:0;left:0;height:3px;background:var(--gradient-primary);width:0%;z-index:900;transition:width .15s linear;box-shadow:0 0 8px var(--glow-purple)}
.session-timer{position:fixed;bottom:8px;left:8px;font-size:10px;color:var(--text-tertiary);opacity:.3;z-index:10;transition:opacity var(--t-fast)}
.session-timer:hover{opacity:.7}

/* ─── Achievements ─── */
.achievement-toast{position:fixed;top:80px;right:24px;z-index:3000;background:var(--bg-panel);backdrop-filter:blur(20px);border:1px solid var(--accent-primary);border-radius:var(--radius-lg);padding:16px 22px;display:flex;align-items:center;gap:14px;box-shadow:0 8px 40px var(--glow-purple);animation:achieveSlide .5s cubic-bezier(.34,1.56,.64,1);max-width:340px}
.achievement-icon{width:44px;height:44px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.ach-title{font-weight:800;font-size:12px;color:var(--accent-primary);text-transform:uppercase;letter-spacing:.5px}
.ach-desc{font-size:13px;color:var(--text-secondary);margin-top:2px}

/* ─── Heart Burst ─── */
.heart-burst{position:fixed;pointer-events:none;z-index:50}
.heart-particle{position:absolute;font-size:14px;animation:heartFly .8s ease-out forwards;opacity:0}

/* ─── Toast ─── */
.toast-container{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:9999;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none}
.toast{background:var(--bg-panel);backdrop-filter:blur(20px);border:1px solid var(--border);color:#fff;padding:12px 24px;border-radius:var(--radius-full);font-size:14px;font-weight:600;pointer-events:auto;opacity:0;transform:translateY(8px);transition:all .3s ease;box-shadow:var(--shadow-md);white-space:nowrap}
.toast.visible{opacity:1;transform:translateY(0)}
.toast-error{border-color:rgba(239,68,68,0.3);color:var(--accent-danger)}

/* ─── Empty States ─── */
.empty-state{text-align:center;padding:60px 24px;color:var(--text-secondary)}
.empty-state i{font-size:48px;color:var(--accent-primary);opacity:.3;margin-bottom:16px;display:block}
.empty-state h3{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:6px}
.empty-state p{font-size:14px}
.empty-state-sm{display:flex;flex-direction:column;align-items:center;gap:8px;padding:32px 16px;color:var(--text-tertiary);font-size:13px;text-align:center}
.empty-state-sm i{font-size:24px;opacity:.4}

/* ─── Back to Top ─── */
.back-to-top-btn{position:fixed;bottom:24px;right:24px;width:44px;height:44px;border-radius:50%;background:var(--gradient-primary);color:#fff;border:none;font-size:16px;cursor:pointer;z-index:500;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px var(--glow-purple);transition:all var(--t-fast);opacity:0;pointer-events:none;transform:translateY(10px)}
.back-to-top-btn.visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.back-to-top-btn:hover{transform:translateY(-2px)!important;box-shadow:0 6px 24px var(--glow-purple)}

/* ─── Single Post View ─── */
.post-view-back{margin-bottom:16px}
#post-view{max-width:680px;margin:0 auto}

/* ─── Edit Post ─── */
.edit-textarea{min-height:80px!important;font-size:14px!important;resize:vertical}
.edit-actions{display:flex;gap:8px;margin-top:10px}

/* ═══════════════ MOBILE RESPONSIVE ═══════════════ */
.mobile-toggle{display:none;position:fixed;top:14px;left:14px;z-index:200;background:var(--bg-panel);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius-md);width:40px;height:40px;align-items:center;justify-content:center;color:#fff;font-size:16px;cursor:pointer}
#sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:90}

@media(max-width:1200px){
  .trending-sidebar{display:none}
}

@media(max-width:768px){
  .mobile-toggle{display:flex}
  .sidebar{position:fixed;top:0;left:-280px;width:260px;height:100vh;z-index:100;transition:left .3s ease;box-shadow:var(--shadow-lg)}
  .sidebar.open{left:0}
  .view-container{padding:16px;padding-top:56px}
  #chat-view{flex-direction:column;margin:0;border-radius:0}
  .chat-users-panel{width:100%;max-height:50%;border-right:none;border-bottom:1px solid var(--border)}
  .chat-back-btn{display:flex}
  .feed-main{max-width:100%}
  .mp-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}
  .mp-card-img{height:130px}
  .profile-info-section{flex-direction:column;align-items:center;text-align:center}
  .profile-stats{justify-content:center}
  .notifications-panel{width:100%;right:-100%}
  .notifications-panel.open{right:0}
}