/* ===== TOKENS ===== */
:root {
  --bg: #0b0f1a;
  --bg-soft: #111827;
  --surface: #1a2035;
  --surface-hover: #1f2947;
  --card: #151c32;
  --card-border: rgba(148,163,184,0.12);
  --text: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-glow: rgba(99,102,241,0.15);
  --accent: #22d3ee;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: rgba(148,163,184,0.15);
  --border-strong: rgba(148,163,184,0.3);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(99,102,241,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --ease: cubic-bezier(0.4,0,0.2,1);
  --font: "Segoe UI",system-ui,-apple-system,sans-serif;
}
:root.light {
  --bg: #ffffff;
  --bg-soft: #f9fafb;
  --surface: #f3f4f6;
  --surface-hover: #e5e7eb;
  --card: #ffffff;
  --card-border: rgba(0,0,0,0.08);
  --text: #111827;
  --text-secondary: #4b5563;
  --text-muted: #9ca3af;
  --primary: #4f46e5;
  --primary-hover: #6366f1;
  --primary-glow: rgba(79,70,229,0.08);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 40px rgba(79,70,229,0.06);
}

/* ===== BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--text);background:var(--bg);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input{font-family:inherit;border:none;outline:none;background:none}
.hidden{display:none!important}

/* ===== BG ===== */
.bg-grid{position:fixed;inset:0;z-index:0;opacity:0.04;background-image:linear-gradient(to right,var(--text) 1px,transparent 1px),linear-gradient(to bottom,var(--text) 1px,transparent 1px);background-size:40px 40px;pointer-events:none}
.bg-orb{position:fixed;border-radius:50%;z-index:0;filter:blur(100px);opacity:0.12;pointer-events:none;animation:orbDrift 16s ease-in-out infinite alternate}
.orb-1{width:400px;height:400px;background:var(--primary);top:-120px;right:-80px}
.orb-2{width:360px;height:360px;background:var(--accent);bottom:-120px;left:-80px;animation-delay:2s}
@keyframes orbDrift{from{transform:translateY(0) translateX(0) scale(1)}to{transform:translateY(24px) translateX(16px) scale(1.06)}}

/* ===== THEME TOGGLE ===== */
.theme-toggle-btn{position:fixed;top:12px;right:12px;z-index:100;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);background:var(--card);border:1px solid var(--card-border);box-shadow:var(--shadow-sm);font-size:16px;transition:all 0.2s ease}
.theme-toggle-btn:hover{background:var(--surface);border-color:var(--border-strong);transform:translateY(-1px)}

/* ===== HOME ===== */
.home-main{padding:48px 16px 32px;position:relative;z-index:2}
.home-container{max-width:640px;margin:0 auto}
.home-brand{margin-bottom:24px;text-align:center}
.logo-title{font-size:24px;font-weight:700;letter-spacing:-0.3px;color:var(--text);display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:8px}
.logo-emoji{font-size:22px}
.logo-accent{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.logo-tagline{color:var(--text-secondary);font-size:14px}

/* Search Form */
.search-form{margin-bottom:12px}
.search-input-wrapper{display:flex;align-items:center;background:var(--card);border:1.5px solid var(--card-border);border-radius:var(--radius-full);padding:5px 5px 5px 14px;box-shadow:var(--shadow-md),var(--shadow-glow);transition:all 0.2s ease}
.search-input-wrapper:focus-within{border-color:var(--primary);box-shadow:var(--shadow-lg),0 0 0 3px var(--primary-glow)}
.search-icon-inline{flex-shrink:0;color:var(--text-muted);margin-right:10px;transition:color 0.2s}
.search-input-wrapper:focus-within .search-icon-inline{color:var(--primary)}
.search-input-wrapper input{flex:1;font-size:15px;color:var(--text);padding:8px 0}
.search-input-wrapper input::placeholder{color:var(--text-muted)}
.search-submit-btn{flex-shrink:0;background:linear-gradient(135deg,var(--primary),var(--primary-hover));color:#fff;font-weight:600;font-size:13px;padding:8px 16px;border-radius:var(--radius-full);transition:all 0.2s ease}
.search-submit-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(99,102,241,0.4)}

/* Suggestions */
.suggestions{margin-top:4px;margin-bottom:12px;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);overflow:hidden;animation:fadeUp 0.15s ease}
.suggestion-item{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:10px 14px;color:var(--text);font-size:14px;border-bottom:1px solid var(--card-border);transition:background 0.15s}
.suggestion-item:last-child{border-bottom:none}
.suggestion-item:hover,.suggestion-item.active{background:var(--surface)}
.suggestion-icon{color:var(--text-muted);font-size:14px;flex-shrink:0}

/* Chips */
.quick-chips{display:flex;justify-content:center;flex-wrap:wrap;gap:6px}
.chip{border:1px solid var(--card-border);background:var(--card);color:var(--text-secondary);padding:7px 12px;border-radius:var(--radius-full);font-size:12px;transition:all 0.2s ease}
.chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-glow);transform:translateY(-1px)}

/* ===== RESULTS ===== */
.results-main{min-height:100vh;padding:0;position:relative;z-index:2}

/* Topbar */
.topbar{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid var(--card-border);backdrop-filter:blur(12px);padding:8px 12px;animation:slideDown 0.3s ease}
.topbar-inner{max-width:860px;margin:0 auto;display:flex;align-items:center;gap:10px}
.topbar-logo{font-size:16px;font-weight:700;color:var(--text);text-decoration:none;flex-shrink:0;display:flex;align-items:center;gap:4px}
.topbar-logo:hover{text-decoration:none}
.topbar-logo-emoji{font-size:16px}
.topbar-logo-text{display:none}
.topbar-search{flex:1;max-width:none}
.topbar-search .search-input-wrapper{padding:3px 3px 3px 10px;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
.topbar-search .search-submit-btn{font-size:12px;padding:7px 12px}
.topbar-actions{display:flex;align-items:center;gap:4px;flex-shrink:0}
.topbar-link{color:var(--text-secondary);font-size:12px;padding:5px 8px;border-radius:var(--radius-full);transition:all 0.2s;white-space:nowrap}
.topbar-link:hover{color:var(--text);background:var(--surface);text-decoration:none}

.results-container{max-width:860px;margin:0 auto;padding:12px 12px 48px;animation:fadeUp 0.3s ease}

/* Status */
.status-bar{padding:8px 12px;border-radius:var(--radius-sm);margin-bottom:12px;font-size:13px;border:1px solid}
.status-bar.info{background:var(--primary-glow);border-color:rgba(99,102,241,0.2);color:var(--primary-hover)}
.status-bar.error{background:rgba(239,68,68,0.08);border-color:rgba(239,68,68,0.2);color:var(--danger)}

/* AI Toggle Button */
.ai-toggle-wrapper{margin-bottom:12px}
.ai-toggle-btn{display:flex;align-items:center;gap:10px;width:100%;padding:12px 16px;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:all 0.2s ease;cursor:pointer}
.ai-toggle-btn:hover{background:var(--surface);border-color:var(--border-strong)}
.ai-toggle-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}
.ai-toggle-icon{font-size:16px;font-weight:700}
.ai-toggle-text{font-size:14px;font-weight:600;flex:1;text-align:left}
.ai-toggle-arrow{font-size:14px;color:var(--text-muted);transition:transform 0.3s var(--ease)}
.ai-toggle-btn.active .ai-toggle-arrow{transform:rotate(90deg)}
.ai-toggle-btn.active .ai-toggle-icon,.ai-toggle-btn.active .ai-toggle-text,.ai-toggle-btn.active .ai-toggle-arrow{color:#fff}

/* AI Answer Card */
.ai-answer-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-lg);margin-bottom:16px;overflow:hidden;box-shadow:var(--shadow-sm);animation:expandDown 0.35s var(--ease)}
.ai-answer-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--card-border);cursor:pointer;user-select:none;transition:background 0.2s}
.ai-answer-header:hover{background:var(--surface)}
.ai-answer-title{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px;color:var(--text)}
.ai-avatar{width:24px;height:24px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;font-size:12px;color:#fff;flex-shrink:0}
.ai-collapse-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);color:var(--text-muted);font-size:16px;transition:all 0.2s}
.ai-collapse-btn:hover{color:var(--text);background:var(--surface)}
.ai-answer-body{padding:16px;max-height:800px;overflow-y:auto;transition:max-height 0.35s var(--ease),padding 0.35s var(--ease),opacity 0.2s}
.ai-answer-body.collapsed{max-height:0;padding-top:0;padding-bottom:0;opacity:0;overflow:hidden}
.ai-answer-text{font-size:14px;line-height:1.7;color:var(--text);white-space:pre-wrap;word-break:break-word}
.ai-answer-meta{margin-top:12px;padding-top:10px;border-top:1px solid var(--card-border);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.confidence-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:var(--radius-full);font-size:11px;font-weight:600;background:var(--surface);color:var(--text-secondary)}
.intent-badge{display:inline-flex;align-items:center;padding:3px 8px;border-radius:var(--radius-full);font-size:11px;text-transform:capitalize;background:var(--primary-glow);color:var(--primary)}
.verifications-list,.contradictions-list{margin-top:10px;list-style:none}
.verifications-list li,.contradictions-list li{padding:4px 0;font-size:12px;color:var(--text-secondary);display:flex;align-items:flex-start;gap:6px}
.tag{display:inline-block;padding:1px 8px;border-radius:var(--radius-full);font-size:10px;font-weight:600;flex-shrink:0}
.tag.verified{background:rgba(34,197,94,0.1);color:var(--success)}
.tag.weak{background:rgba(245,158,11,0.1);color:var(--warning)}
.tag.conflicting{background:rgba(239,68,68,0.1);color:var(--danger)}
.action-buttons{display:flex;gap:6px;margin-top:10px}
.action-btn{display:inline-flex;align-items:center;gap:4px;padding:5px 10px;border-radius:var(--radius-full);font-size:11px;color:var(--text-muted);border:1px solid var(--card-border);background:var(--card);transition:all 0.2s}
.action-btn:hover{color:var(--text);border-color:var(--border-strong);background:var(--surface)}

/* Export */
.export-menu{position:absolute;right:0;top:100%;margin-top:4px;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);z-index:20;min-width:160px;overflow:hidden}
.export-option{display:block;width:100%;text-align:left;border:none;background:transparent;color:var(--text);padding:8px 12px;font-size:12px;border-bottom:1px solid var(--card-border);transition:background 0.15s}
.export-option:last-child{border-bottom:none}
.export-option:hover{background:var(--surface)}

/* Tabs */
.results-tabs{display:flex;gap:4px;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--card-border);overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.results-tabs::-webkit-scrollbar{display:none}
.tab-btn{padding:6px 14px;border-radius:var(--radius-full);font-size:13px;color:var(--text-secondary);transition:all 0.2s;font-weight:500;white-space:nowrap;flex-shrink:0}
.tab-btn:hover{background:var(--surface);color:var(--text)}
.tab-btn.active{background:var(--primary);color:#fff}

.results-count{font-size:12px;color:var(--text-muted);margin-bottom:12px}

/* Result Cards */
.results-list{display:flex;flex-direction:column}
.result-card{padding:16px 0;border-bottom:1px solid var(--card-border);animation:fadeUp 0.3s ease both}
.result-card:last-child{border-bottom:none}
.result-card-header{display:flex;align-items:flex-start;gap:10px;margin-bottom:4px}
.result-favicon{width:18px;height:18px;border-radius:4px;flex-shrink:0;margin-top:2px;background:var(--surface)}
.result-title{font-size:16px;font-weight:500;color:var(--primary);display:block;margin-bottom:1px;line-height:1.3}
.result-title:hover{text-decoration:underline;color:var(--primary-hover)}
.result-url{font-size:12px;color:var(--text-muted);display:block;margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.result-snippet{font-size:13px;color:var(--text-secondary);line-height:1.55}
.result-snippet mark{background:rgba(253,224,71,0.15);color:var(--text);border-radius:2px;padding:0 1px}
.result-card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:8px}
.result-visit-btn{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border-radius:var(--radius-full);font-size:12px;font-weight:500;color:var(--primary);border:1px solid var(--primary);background:transparent;transition:all 0.2s}
.result-visit-btn:hover{background:var(--primary);color:#fff}
.result-meta-info{display:flex;gap:10px;font-size:11px;color:var(--text-muted)}

/* Pagination removed — using Load More button */

/* Load More Button */
.load-more-btn{display:block;width:100%;max-width:320px;margin:24px auto 0;padding:12px 24px;border-radius:var(--radius-full);font-size:14px;font-weight:600;color:var(--primary);border:1.5px solid var(--primary);background:transparent;transition:all 0.25s var(--ease);cursor:pointer}
.load-more-btn:hover:not(:disabled){background:var(--primary);color:#fff;transform:translateY(-1px);box-shadow:0 4px 16px rgba(99,102,241,0.3)}
.load-more-btn:disabled{opacity:0.5;cursor:wait}
.load-more-btn:active{transform:translateY(0)}

/* Tab Transitions */
.results-list{display:flex;flex-direction:column;transition:opacity 0.2s ease}
.results-list.tab-fade-in{animation:tabFadeIn 0.3s ease both}
.results-list.tab-fade-out{animation:tabFadeOut 0.15s ease both}
@keyframes tabFadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes tabFadeOut{from{opacity:1}to{opacity:0}}

/* News Cards */
.news-card{border-bottom:none!important}
.news-card-inner{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius-md);overflow:hidden;transition:all 0.2s ease}
.news-card-inner:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md);transform:translateY(-1px)}
.news-card-body{display:flex;gap:12px;padding:14px}
.news-thumbnail{width:100px;height:75px;border-radius:var(--radius-sm);object-fit:cover;flex-shrink:0;background:var(--surface)}
.news-content{flex:1;min-width:0}
.news-content .result-title{font-size:15px;margin-bottom:4px}
.news-content .result-snippet{font-size:12px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-footer{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;border-top:1px solid var(--card-border);background:var(--bg-soft)}
.news-source{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text-muted)}
.news-date{font-size:11px;color:var(--text-secondary);font-weight:500}

/* Image Grid */
.results-list.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;padding:8px 0}
.image-card{border-radius:var(--radius-md);overflow:hidden;background:var(--card);border:1px solid var(--card-border);transition:all 0.2s ease}
.image-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}
.image-link{display:block;position:relative;overflow:hidden}
.image-thumb{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform 0.3s ease}
.image-link:hover .image-thumb{transform:scale(1.05)}
.image-overlay{position:absolute;inset:0;background:rgba(0,0,0,0.4);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity 0.2s}
.image-link:hover .image-overlay{opacity:1}
.image-title{padding:8px 10px;font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Video Cards */
.results-list.video-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;padding:8px 0}
.video-card{border-radius:var(--radius-md);overflow:hidden;background:var(--card);border:1px solid var(--card-border);transition:all 0.2s ease}
.video-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}
.video-link{display:block;text-decoration:none;color:inherit}
.video-thumbnail-wrapper{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface)}
.video-thumb{width:100%;height:100%;object-fit:cover;display:block}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:48px;height:48px;border-radius:50%;background:rgba(0,0,0,0.7);display:flex;align-items:center;justify-content:center;transition:all 0.2s}
.video-link:hover .video-play-btn{background:var(--primary);transform:translate(-50%,-50%) scale(1.1)}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.8);color:#fff;padding:2px 6px;border-radius:4px;font-size:11px;font-weight:600}
.video-info{padding:12px}
.video-title{font-size:14px;font-weight:500;color:var(--text);line-height:1.4;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-link:hover .video-title{color:var(--primary)}
.video-meta{display:flex;gap:8px;font-size:11px;color:var(--text-muted)}

/* Related */
.related-searches{margin-top:24px;padding-top:16px;border-top:1px solid var(--card-border)}
.related-heading{font-size:15px;font-weight:600;color:var(--text);margin-bottom:10px}
.related-chips{display:flex;flex-wrap:wrap;gap:6px}

/* Skeleton */
.skeleton{position:relative;overflow:hidden;background:var(--surface);border-radius:var(--radius-sm)}
.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,var(--card-border),transparent);transform:translateX(-100%);animation:shimmer 1.4s infinite}
.skeleton-line{height:12px;margin-bottom:8px}
.skeleton-line.w40{width:40%}.skeleton-line.w60{width:60%}.skeleton-line.w80{width:80%}.skeleton-line.w95{width:95%}
.skeleton-line.lg{height:18px}
@keyframes shimmer{to{transform:translateX(100%)}}

/* Empty State */
.empty-state{text-align:center;padding:40px 16px;color:var(--text-muted)}
.empty-state-icon{font-size:36px;margin-bottom:8px}
.empty-state-text{font-size:14px;margin-bottom:12px}

/* ===== Animations ===== */
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideDown{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
@keyframes expandDown{from{opacity:0;transform:translateY(-4px) scaleY(0.95)}to{opacity:1;transform:translateY(0) scaleY(1)}}

/* ===== Desktop (768px+) ===== */
@media(min-width:768px){
  .home-main{min-height:100vh;display:flex;align-items:flex-start;justify-content:center;padding-top:120px}
  .home-container{text-align:center}
  .home-brand{margin-bottom:32px}
  .logo-title{font-size:clamp(32px,5vw,48px)}
  .logo-emoji{font-size:clamp(28px,4vw,40px)}
  .logo-tagline{font-size:16px}
  .search-input-wrapper input{font-size:16px;padding:10px 0}
  .search-submit-btn{font-size:14px;padding:10px 20px}
  .quick-chips{gap:8px}
  .chip{font-size:13px;padding:8px 14px}

  .topbar-logo-text{display:inline}
  .topbar-search{max-width:560px}
  .topbar-search .search-input-wrapper{padding:4px 4px 4px 14px}
  .topbar-search .search-submit-btn{font-size:13px;padding:8px 16px}
  .topbar-actions{gap:6px}
  .topbar-link{font-size:13px;padding:6px 10px}

  .results-container{padding:16px 24px 60px}
  .result-title{font-size:18px}
  .result-snippet{font-size:14px}
  .result-card-footer{flex-direction:row}
}

/* ===== Small phones (<=380px) ===== */
@media(max-width:380px){
  .home-main{padding:36px 12px 24px}
  .logo-title{font-size:20px;gap:6px}
  .logo-emoji{font-size:18px}
  .logo-tagline{font-size:13px}
  .search-input-wrapper{padding:4px 4px 4px 10px}
  .search-input-wrapper input{font-size:14px;padding:7px 0}
  .search-submit-btn{font-size:12px;padding:7px 12px}
  .topbar{padding:6px 8px}
  .topbar-inner{gap:6px}
  .topbar-search .search-submit-btn{display:none}
  .topbar-link{font-size:11px;padding:4px 6px}
  .results-container{padding:8px 8px 32px}
  .result-title{font-size:15px}
  .result-snippet{font-size:12px}
  .result-visit-btn{font-size:11px;padding:4px 10px}
  .tab-btn{padding:5px 10px;font-size:12px}
}

/* Scrollbar */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--surface);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--surface-hover)}