/* ============================================================
   Sydney AI by Anthara — style.css
   Space & Liquid Glass Edition
   ============================================================ */

   :root {
    --bg:        #03020a;
    --surface:   #08071a;
    --surface2:  #0e0d22;
    --surface3:  #16152e;
    --border:    rgba(255,255,255,0.06);
    --border2:   rgba(255,255,255,0.11);
    --border3:   rgba(255,255,255,0.18);
    --text:      #f0eeff;
    --muted:     #3a3858;
    --muted2:    #7a78a0;
    --accent:    #6c63ff;
    --accent2:   #9d96ff;
    --accentbg:  rgba(108,99,255,0.1);
    --accentgl:  rgba(108,99,255,0.25);
    --cyan:      #00d4ff;
    --cyanbg:    rgba(0,212,255,0.08);
    --cyangl:    rgba(0,212,255,0.2);
    --danger:    #ff4d6d;
    --success:   #00ffb3;
    --sidebar-w: 260px;
    --topbar-h:  56px;
    --radius:    13px;
    --radius2:   20px;
  }
  
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html, body { height: 100%; overflow: hidden; }
  
  body {
    font-family: 'Outfit', 'Sora', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  
  a { cursor: pointer; }
  ::-webkit-scrollbar { width: 3px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: rgba(108,99,255,0.3); border-radius: 4px; }
  
  #intro-sequence { position: fixed; inset: 0; z-index: 1000; background: var(--bg); display: flex; align-items: center; justify-content: center; overflow: hidden; }
  #intro-sequence.fade-out { animation: introFadeOut 0.8s ease forwards; }
  @keyframes introFadeOut { to { opacity: 0; pointer-events: none; } }
  #stars-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
  .nebula { position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none; }
  .nebula-1 { width: 600px; height: 600px; top: -100px; left: -100px; background: radial-gradient(circle, rgba(108,99,255,0.15) 0%, transparent 65%); animation: nebulaDrift 8s ease-in-out infinite alternate; }
  .nebula-2 { width: 500px; height: 500px; bottom: -80px; right: -80px; background: radial-gradient(circle, rgba(0,212,255,0.1) 0%, transparent 65%); animation: nebulaDrift 10s ease-in-out infinite alternate-reverse; }
  .nebula-3 { width: 400px; height: 400px; top: 40%; left: 40%; background: radial-gradient(circle, rgba(157,150,255,0.07) 0%, transparent 65%); animation: nebulaDrift 12s ease-in-out infinite alternate; }
  @keyframes nebulaDrift { from { transform: translate(0,0) scale(1); } to { transform: translate(30px,20px) scale(1.1); } }
  .intro-content { position: relative; z-index: 2; text-align: center; animation: introContentIn 1.2s cubic-bezier(0.16,1,0.3,1) 1s both; }
  @keyframes introContentIn { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
  .intro-logo { width: 66px; height: 66px; background: linear-gradient(135deg, var(--accent), var(--cyan)); border-radius: 18px; display: flex; align-items: center; justify-content: center; font-size: 28px; margin: 0 auto 24px; box-shadow: 0 0 40px var(--accentgl), 0 0 80px var(--cyangl); animation: logoPulse 3s ease-in-out infinite; }
  @keyframes logoPulse { 0%,100% { box-shadow: 0 0 40px var(--accentgl), 0 0 80px var(--cyangl); } 50% { box-shadow: 0 0 70px var(--accentgl), 0 0 130px var(--cyangl); } }
  .intro-welcome { font-size: 11px; font-weight: 500; letter-spacing: .35em; text-transform: uppercase; color: var(--accent2); margin-bottom: 12px; animation: textGlow 3s ease-in-out infinite; }
  @keyframes textGlow { 0%,100% { text-shadow: 0 0 20px rgba(157,150,255,0.4); } 50% { text-shadow: 0 0 40px rgba(157,150,255,0.9); } }
  .intro-title { font-size: clamp(40px,7vw,72px); font-weight: 700; letter-spacing: -.02em; line-height: 1.05; background: linear-gradient(135deg, #fff 0%, var(--accent2) 50%, var(--cyan) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 12px; }
  .intro-sub { font-size: 14px; color: var(--muted2); font-weight: 300; letter-spacing: .04em; margin-bottom: 40px; }
  .intro-bar { width: 200px; height: 2px; background: rgba(255,255,255,0.06); border-radius: 2px; overflow: hidden; margin: 0 auto 24px; }
  .intro-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--cyan)); border-radius: 2px; animation: barFill 3s cubic-bezier(0.4,0,0.2,1) 1s forwards; width: 0; }
  @keyframes barFill { to { width: 100%; } }
  .skip-btn { padding: 8px 20px; background: rgba(255,255,255,0.06); border: 1px solid var(--border2); border-radius: 20px; color: var(--muted2); font-family: 'Outfit',sans-serif; font-size: 12px; cursor: pointer; transition: background .2s, color .2s, border-color .2s; backdrop-filter: blur(10px); }
  .skip-btn:hover { background: rgba(108,99,255,0.15); color: var(--accent2); border-color: rgba(108,99,255,0.3); }
  
  #beta-page, #login-page, #app { opacity: 0; transition: opacity 0.5s ease; }
  #beta-page.visible, #login-page.visible, #app.visible { opacity: 1; }
  
  .space-bg { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse at 20% 20%, rgba(108,99,255,0.12) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(0,212,255,0.08) 0%, transparent 50%); }
  .space-bg::after { content: ''; position: absolute; inset: 0; background-image: radial-gradient(circle, rgba(255,255,255,0.45) 1px, transparent 1px), radial-gradient(circle, rgba(255,255,255,0.2) 1px, transparent 1px); background-size: 200px 200px, 150px 150px; background-position: 0 0, 75px 75px; }
  
  .glass-card { background: rgba(8,7,26,0.75); backdrop-filter: blur(24px) saturate(1.4); -webkit-backdrop-filter: blur(24px) saturate(1.4); border: 1px solid var(--border2); border-radius: var(--radius2); box-shadow: 0 0 0 1px rgba(255,255,255,0.04) inset, 0 32px 64px rgba(0,0,0,0.6), 0 0 80px rgba(108,99,255,0.07); position: relative; overflow: hidden; }
  .glass-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 50%); pointer-events: none; border-radius: inherit; }
  
  #beta-page { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; padding: 24px; z-index: 200; background: var(--bg); }
  .beta-card { position: relative; z-index: 2; width: 100%; max-width: 440px; padding: 44px 40px; text-align: center; animation: cardIn 0.6s cubic-bezier(0.16,1,0.3,1) both; }
  @keyframes cardIn { from { opacity: 0; transform: translateY(24px) scale(0.96); } to { opacity: 1; transform: translateY(0) scale(1); } }
  .beta-logo { display: flex; align-items: center; justify-content: center; gap: 14px; margin-bottom: 24px; }
  .beta-logo-name { font-family: 'JetBrains Mono', monospace; font-size: 24px; font-weight: 600; letter-spacing: .08em; background: linear-gradient(135deg, #fff, var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
  .beta-badge { display: inline-flex; align-items: center; gap: 7px; padding: 6px 16px; background: linear-gradient(135deg, rgba(108,99,255,0.15), rgba(0,212,255,0.08)); border: 1px solid rgba(108,99,255,0.3); border-radius: 20px; font-size: 11px; font-weight: 600; color: var(--accent2); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 18px; }
  .beta-title { font-size: 22px; font-weight: 700; margin-bottom: 10px; letter-spacing: -.01em; }
  .beta-desc  { font-size: 13px; color: var(--muted2); line-height: 1.8; margin-bottom: 26px; font-weight: 300; }
  .beta-card .field { text-align: left; margin-bottom: 14px; }
  .beta-footer { margin-top: 20px; font-size: 12px; color: var(--muted); }
  .beta-footer a { color: var(--accent2); text-decoration: none; }
  .beta-footer a:hover { text-decoration: underline; }
  .mono { font-family: 'JetBrains Mono', monospace; }
  
  #login-page { position: fixed; inset: 0; display: grid; grid-template-columns: 1fr 1fr; z-index: 100; background: var(--bg); }
  @media (max-width: 720px) { #login-page { grid-template-columns: 1fr; } .login-left { display: none; } }
  .login-left { position: relative; display: flex; flex-direction: column; justify-content: space-between; padding: 52px; border-right: 1px solid var(--border); overflow: hidden; background: linear-gradient(160deg, #07051c 0%, var(--bg) 60%); }
  .ll-glow1, .ll-glow2 { position: absolute; border-radius: 50%; pointer-events: none; filter: blur(70px); }
  .ll-glow1 { width: 500px; height: 500px; top: -150px; left: -150px; background: radial-gradient(circle, rgba(108,99,255,0.18) 0%, transparent 65%); }
  .ll-glow2 { width: 350px; height: 350px; bottom: -80px; right: -60px; background: radial-gradient(circle, rgba(0,212,255,0.1) 0%, transparent 65%); }
  .ll-grid  { position: absolute; inset: 0; background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px); background-size: 32px 32px; pointer-events: none; }
  .ll-top { position: relative; z-index: 2; }
  .ll-logo { display: flex; align-items: center; gap: 14px; margin-bottom: 52px; }
  .ll-logo-name { font-family: 'JetBrains Mono', monospace; font-size: 20px; font-weight: 600; letter-spacing: .07em; background: linear-gradient(135deg, #fff, var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
  .ll-headline { font-size: 33px; font-weight: 700; line-height: 1.15; margin-bottom: 16px; letter-spacing: -.02em; }
  .ll-headline span { background: linear-gradient(90deg, var(--accent2), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
  .ll-desc { font-size: 14px; color: var(--muted2); line-height: 1.8; font-weight: 300; max-width: 320px; }
  .ll-features { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 10px; }
  .ll-feature { display: flex; align-items: center; gap: 14px; padding: 14px 16px; background: rgba(255,255,255,0.02); border: 1px solid var(--border); border-radius: var(--radius); backdrop-filter: blur(10px); transition: border-color .3s, background .3s; animation: featureSlide .5s ease both; }
  .ll-feature:hover { border-color: rgba(108,99,255,0.22); background: rgba(108,99,255,0.04); }
  .ll-feature:nth-child(1) { animation-delay: .1s; } .ll-feature:nth-child(2) { animation-delay: .2s; } .ll-feature:nth-child(3) { animation-delay: .3s; }
  @keyframes featureSlide { from { opacity: 0; transform: translateX(-14px); } to { opacity: 1; transform: translateX(0); } }
  .ll-fi { width: 36px; height: 36px; min-width: 36px; background: linear-gradient(135deg, var(--accentbg), var(--cyanbg)); border: 1px solid rgba(108,99,255,0.18); border-radius: 9px; display: flex; align-items: center; justify-content: center; font-size: 16px; }
  .ll-ft { font-size: 13px; color: var(--muted2); line-height: 1.5; } .ll-ft strong { color: var(--text); font-weight: 600; display: block; margin-bottom: 1px; }
  .ll-footer { position: relative; z-index: 2; font-size: 11px; color: var(--muted); font-family: 'JetBrains Mono', monospace; }
  .login-right { background: var(--bg); display: flex; align-items: center; justify-content: center; padding: 40px 28px; overflow-y: auto; }
  .login-card { width: 100%; max-width: 400px; animation: cardIn .5s cubic-bezier(0.16,1,0.3,1) both; }
  .login-mobile-logo { display: none; align-items: center; gap: 10px; margin-bottom: 28px; }
  @media (max-width: 720px) { .login-mobile-logo { display: flex; } }
  .login-mobile-name { font-family: 'JetBrains Mono', monospace; font-size: 18px; font-weight: 600; }
  .login-title { font-size: 23px; font-weight: 700; margin-bottom: 6px; letter-spacing: -.02em; }
  .login-sub   { font-size: 13px; color: var(--muted2); margin-bottom: 26px; font-weight: 300; }
  
  .btn-google { width: 100%; padding: 13px 16px; background: rgba(255,255,255,0.04); border: 1px solid var(--border2); border-radius: var(--radius); color: var(--text); font-family: 'Outfit',sans-serif; font-size: 14px; font-weight: 500; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 10px; transition: background .2s, border-color .2s, transform .15s; backdrop-filter: blur(10px); }
  .btn-google:hover { background: rgba(255,255,255,0.07); border-color: var(--border3); }
  .btn-google:active { transform: scale(0.98); }
  
  .form-divider { display: flex; align-items: center; gap: 12px; margin: 18px 0; }
  .form-divider::before, .form-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
  .form-divider span { font-size: 11px; color: var(--muted); letter-spacing: .1em; text-transform: uppercase; }
  
  .form-error   { display: none; font-size: 12.5px; color: #ff8fa3; margin-bottom: 14px; padding: 11px 14px; background: rgba(255,77,109,0.07); border: 1px solid rgba(255,77,109,0.2); border-radius: 10px; line-height: 1.5; }
  .form-success { display: none; font-size: 12.5px; color: var(--success); margin-bottom: 14px; padding: 11px 14px; background: rgba(0,255,179,0.07); border: 1px solid rgba(0,255,179,0.2); border-radius: 10px; line-height: 1.5; }
  
  .field { margin-bottom: 14px; }
  .field label { display: block; font-size: 11px; font-weight: 600; color: var(--muted2); margin-bottom: 7px; letter-spacing: .07em; text-transform: uppercase; }
  .field-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 7px; }
  .field-row label { margin-bottom: 0; }
  .field-link { font-size: 11.5px; color: var(--accent2); cursor: pointer; text-decoration: none; transition: color .2s; }
  .field-link:hover { color: var(--cyan); }
  .field-wrap { position: relative; }
  .field-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); font-size: 14px; pointer-events: none; opacity: 0.35; transition: opacity .2s; }
  .field-wrap:focus-within .field-icon { opacity: 0.7; }
  .field input { width: 100%; padding: 12px 14px 12px 44px; background: rgba(255,255,255,0.03); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); font-family: 'Outfit',sans-serif; font-size: 14px; outline: none; backdrop-filter: blur(10px); transition: border-color .2s, box-shadow .2s, background .2s; }
  .field input:focus { border-color: rgba(108,99,255,.45); box-shadow: 0 0 0 3px rgba(108,99,255,0.1); background: rgba(108,99,255,0.04); }
  .field input::placeholder { color: var(--muted); }
  
  .btn-primary { width: 100%; padding: 13px; background: linear-gradient(135deg, var(--accent) 0%, #8b84ff 50%, rgba(0,212,255,0.85) 100%); background-size: 200% auto; border: none; border-radius: var(--radius); color: #fff; font-family: 'Outfit',sans-serif; font-size: 14px; font-weight: 600; cursor: pointer; transition: background-position .4s, transform .15s, box-shadow .2s, opacity .2s; box-shadow: 0 6px 24px rgba(108,99,255,0.35); margin-top: 4px; letter-spacing: .02em; }
  .btn-primary:hover { background-position: right center; box-shadow: 0 10px 32px rgba(108,99,255,0.45); }
  .btn-primary:active { transform: scale(.98); }
  .btn-primary:disabled { opacity: .4; cursor: not-allowed; box-shadow: none; }
  
  .form-footer { margin-top: 18px; text-align: center; font-size: 13px; color: var(--muted2); }
  .form-footer a { color: var(--accent2); text-decoration: none; cursor: pointer; font-weight: 500; transition: color .2s; }
  .form-footer a:hover { color: var(--cyan); }
  .form-terms { margin-top: 12px; text-align: center; font-size: 11px; color: var(--muted); line-height: 1.6; }
  .form-terms a { color: var(--muted2); text-decoration: underline; cursor: pointer; }
  
  .logo-icon { width: 32px; height: 32px; min-width: 32px; background: linear-gradient(135deg, var(--accent), var(--cyan)); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 14px; box-shadow: 0 0 14px var(--accentgl); }
  
  #app { display: flex; height: 100vh; background: var(--bg); }
  
  .sidebar { width: var(--sidebar-w); min-width: var(--sidebar-w); height: 100vh; background: rgba(8,7,26,0.9); backdrop-filter: blur(20px); border-right: 1px solid var(--border); display: flex; flex-direction: column; overflow: hidden; transition: width .28s ease, min-width .28s ease; position: relative; z-index: 10; flex-shrink: 0; }
  .sidebar.collapsed { width: 60px; min-width: 60px; }
  .sidebar-header { padding: 14px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: var(--topbar-h); }
  .logo { display: flex; align-items: center; gap: 10px; overflow: hidden; white-space: nowrap; min-width: 0; }
  .logo-text { font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600; letter-spacing: .05em; overflow: hidden; background: linear-gradient(135deg, #fff, var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; transition: opacity .2s, width .2s; }
  .sidebar.collapsed .logo-text { opacity: 0; width: 0; overflow: hidden; }
  .sidebar.collapsed .logo-icon { display: none !important; }
  .sidebar.collapsed .logo { min-width: 0; width: 0; flex: 0 0 0; overflow: hidden; gap: 0; padding: 0; margin: 0; border: 0; }
  .new-chat-btn { margin: 10px 10px 4px; padding: 9px 12px; background: linear-gradient(135deg, rgba(108,99,255,0.12), rgba(0,212,255,0.06)); border: 1px solid rgba(108,99,255,0.2); border-radius: 9px; color: var(--accent2); font-family: 'Outfit',sans-serif; font-size: 13px; font-weight: 500; cursor: pointer; display: flex; align-items: center; gap: 8px; transition: background .2s, border-color .2s, box-shadow .2s; overflow: hidden; white-space: nowrap; }
  .new-chat-btn:hover { background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(0,212,255,0.1)); border-color: rgba(108,99,255,0.35); box-shadow: 0 0 18px rgba(108,99,255,0.12); }
  .new-chat-plus { font-size: 16px; flex-shrink: 0; }
  .new-chat-label { transition: opacity .2s; }
  .sidebar.collapsed .new-chat-label { opacity: 0; width: 0; overflow: hidden; }
  .sidebar.collapsed .new-chat-btn {
    margin-left: auto;
    margin-right: auto;
    margin-top: 10px;
    margin-bottom: 4px;
    width: 40px;
    min-width: 40px;
    max-width: 40px;
    height: 40px;
    padding: 0;
    gap: 0;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
  }
  .history-section { flex: 1; overflow-y: auto; padding: 6px 8px 0; min-height: 0; }
  .sidebar.collapsed .history-section {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    flex: 0 0 0;
    min-height: 0;
    max-height: 0;
    overflow: hidden;
    padding: 0;
  }
  .empty-history { padding: 20px 10px; text-align: center; font-size: 12px; color: var(--muted); line-height: 1.7; }
  .sidebar-footer { padding: 10px 8px; border-top: 1px solid var(--border); }
  .sidebar.collapsed .sidebar-footer { display: flex; flex-direction: column; align-items: center; margin-top: auto; }
  .sidebar.collapsed .user-row { justify-content: center; padding-left: 0; padding-right: 0; }
  .sidebar.collapsed #settings-btn { display: none !important; }
  .sidebar.collapsed #upgrade-btn { display: none !important; }
  .sidebar.collapsed .user-row { gap: 0; }
  .sidebar-upgrade-btn .upgrade-btn-icon { display: none; }
  .sidebar.collapsed .sidebar-upgrade-btn .upgrade-btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    line-height: 1;
  }
  .sidebar.collapsed .sidebar-upgrade-btn .upgrade-btn-label { display: none !important; }
  .sidebar.collapsed .sidebar-upgrade-btn { display: none !important; }
  .user-row { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; overflow: hidden; white-space: nowrap; transition: background .15s; }
  .user-row:hover { background: rgba(255,255,255,0.03); }
  .user-avatar { width: 30px; height: 30px; min-width: 30px; background: linear-gradient(135deg, var(--accent), var(--cyan)); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: white; box-shadow: 0 0 10px var(--accentgl); }
  .user-info { overflow: hidden; transition: opacity .2s; }
  .user-name { font-size: 12.5px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; }
  .user-plan { font-size: 10.5px; color: var(--muted2); }
  .sidebar.collapsed .user-info { opacity: 0; width: 0; }
  
  .main { flex: 1; display: flex; flex-direction: column; overflow: hidden; position: relative; background: var(--bg); min-width: 0; }
  .topbar { height: var(--topbar-h); min-height: var(--topbar-h); padding: 0 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-shrink: 0; background: rgba(8,7,26,0.7); backdrop-filter: blur(20px); }
  .topbar-left  { display: flex; align-items: center; gap: 10px; }
  .topbar-right { display: flex; align-items: center; gap: 6px; }
  .model-badge { display: flex; align-items: center; gap: 7px; padding: 6px 12px; background: rgba(255,255,255,0.03); border: 1px solid var(--border); border-radius: 8px; font-size: 12px; font-weight: 500; color: var(--muted2); font-family: 'JetBrains Mono', monospace; }
  .model-dot { width: 6px; height: 6px; background: var(--success); border-radius: 50%; box-shadow: 0 0 6px var(--success); animation: modelBreath 2.8s ease-in-out infinite; }
  @keyframes modelBreath {
    0%,100% { transform: scale(1); opacity: .55; box-shadow: 0 0 6px var(--success); }
    50% { transform: scale(1.45); opacity: 1; box-shadow: 0 0 12px var(--success); }
  }
  .btn-icon { width: 32px; height: 32px; background: rgba(255,255,255,0.03); border: 1px solid var(--border); border-radius: 8px; color: var(--muted2); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 14px; transition: background .15s, color .15s, border-color .15s, box-shadow .15s; }
  .btn-icon:hover { background: rgba(108,99,255,0.1); color: var(--text); border-color: rgba(108,99,255,0.25); box-shadow: 0 0 12px rgba(108,99,255,0.12); }
  
  .chat-area { flex: 1; overflow-y: auto; padding: 28px 0; scroll-behavior: smooth; }
  .welcome { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; padding: 40px 24px; text-align: center; animation: fadeUp .5s ease both; }
  @keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
  .welcome-icon { width: 64px; height: 64px; background: linear-gradient(135deg, var(--accent), var(--cyan)); border-radius: 17px; display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 20px; box-shadow: 0 0 36px var(--accentgl), 0 0 70px var(--cyangl); animation: iconFloat 4s ease-in-out infinite; }
  @keyframes iconFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
  .welcome h2 { font-size: 22px; font-weight: 700; margin-bottom: 8px; letter-spacing: -.01em; }
  .welcome p  { font-size: 13.5px; color: var(--muted2); max-width: 360px; line-height: 1.75; margin-bottom: 32px; }
  .suggestions { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; max-width: 520px; width: 100%; }
  .suggestion-card { padding: 15px 16px; text-align: left; cursor: pointer; background: rgba(255,255,255,0.02); border: 1px solid var(--border); border-radius: var(--radius); backdrop-filter: blur(10px); transition: border-color .2s, background .2s, transform .2s, box-shadow .2s; }
  .suggestion-card:hover { border-color: rgba(108,99,255,0.34); background: rgba(108,99,255,0.07); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(0,0,0,0.25), 0 0 18px rgba(108,99,255,0.18); }
  .s-icon  { font-size: 19px; margin-bottom: 8px; }
  .s-title { font-size: 13px; font-weight: 600; margin-bottom: 3px; }
  .s-desc  { font-size: 11px; color: var(--muted2); }
  
  .messages { padding: 0 max(20px, calc(50% - 400px)); display: flex; flex-direction: column; gap: 22px; }
  .message { display: flex; gap: 13px; animation: msgIn .45s cubic-bezier(0.16,1,0.3,1) both; will-change: opacity, transform; }
  @keyframes msgIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
  .msg-avatar { width: 28px; height: 28px; min-width: 28px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 11px; margin-top: 2px; font-weight: 700; }
  .msg-avatar.ai { background: linear-gradient(135deg, var(--accent), var(--cyan)); color: white; font-family: 'JetBrains Mono', monospace; box-shadow: 0 0 12px var(--accentgl); }
  .msg-avatar.user { background: rgba(255,255,255,0.05); border: 1px solid var(--border2); color: var(--text); }
  .msg-body  { flex: 1; min-width: 0; }
  .msg-name  { font-size: 11.5px; font-weight: 600; color: var(--muted2); margin-bottom: 5px; }
  .msg-name.ai-name { color: var(--accent2); }
  .msg-text  { font-size: 14px; color: var(--text); line-height: 1.78; font-weight: 300; }
  .msg-text code { font-family: 'JetBrains Mono', monospace; font-size: 12px; background: rgba(108,99,255,0.1); border: 1px solid rgba(108,99,255,0.18); padding: 2px 6px; border-radius: 5px; color: var(--accent2); }
  .msg-text strong { font-weight: 600; color: var(--text); }
  
  .processing-indicator { display: flex; align-items: center; gap: 10px; padding: 2px 0; }
  .proc-dots { display: flex; gap: 5px; }
  .proc-dots span { width: 6px; height: 6px; background: var(--accent2); border-radius: 50%; animation: procBounce 1.2s ease infinite; }
  .proc-dots span:nth-child(2) { animation-delay: .2s; } .proc-dots span:nth-child(3) { animation-delay: .4s; }
  @keyframes procBounce { 0%,60%,100% { transform: translateY(0); opacity: .3; } 30% { transform: translateY(-5px); opacity: 1; } }
  .proc-label { font-size: 12px; color: var(--muted2); font-style: italic; }
  
  .input-area { padding: 12px max(20px, calc(50% - 400px)) 14px; background: rgba(8,7,26,0.7); backdrop-filter: blur(20px); border-top: 1px solid var(--border); flex-shrink: 0; }
  .input-wrap { background: rgba(255,255,255,0.03); border: 1px solid var(--border2); border-radius: 15px; backdrop-filter: blur(20px); transition: border-color .2s, box-shadow .2s; overflow: hidden; }
  .input-wrap:focus-within { border-color: rgba(108,99,255,.42); box-shadow: 0 0 0 3px rgba(108,99,255,0.09); }
  .input-top { display: flex; align-items: flex-end; gap: 8px; padding: 12px 13px 10px; }
  textarea#chat-input { flex: 1; background: none; border: none; outline: none; font-family: 'Outfit',sans-serif; font-size: 14px; color: var(--text); resize: none; max-height: 150px; min-height: 24px; line-height: 1.6; padding: 0; }
  textarea#chat-input::placeholder { color: var(--muted); }
  textarea#chat-input:disabled { opacity: 0.4; cursor: not-allowed; }
  .send-btn { width: 32px; height: 32px; min-width: 32px; background: linear-gradient(135deg, var(--accent), var(--cyan)); border: none; border-radius: 8px; color: white; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 13px; transition: opacity .2s, transform .15s, box-shadow .2s; box-shadow: 0 3px 12px var(--accentgl); }
  .send-btn:hover { opacity: .88; box-shadow: 0 5px 20px var(--accentgl); }
  .send-btn:active { transform: scale(.93); }
  .send-btn:disabled { opacity: .25; cursor: not-allowed; box-shadow: none; }
  .input-footer { padding: 0 13px 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
  .input-actions { display: flex; gap: 6px; }
  .input-action-btn { padding: 3px 10px; background: none; border: 1px solid var(--border); border-radius: 6px; color: var(--muted2); font-family: 'Outfit',sans-serif; font-size: 11px; cursor: pointer; transition: background .15s, border-color .15s, color .15s; }
  .input-action-btn:hover { background: rgba(255,255,255,0.04); border-color: var(--border2); color: var(--text); }
  .attachment-menu-wrap { position: relative; display: inline-flex; }
  .attachment-plus-btn { min-width: 32px; padding: 3px 0; text-align: center; font-size: 15px; font-weight: 600; }
  .attachment-plus-btn.active { color: var(--accent2); border-color: rgba(108,99,255,0.28); background: rgba(108,99,255,0.09); }
  .attachment-popup {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    min-width: 140px;
    background: rgba(8,7,26,0.96);
    border: 1px solid var(--border2);
    border-radius: 10px;
    backdrop-filter: blur(20px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.45);
    padding: 6px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
    z-index: 120;
  }
  .attachment-popup.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .attachment-option {
    border: 1px solid transparent;
    background: transparent;
    color: var(--text);
    border-radius: 8px;
    padding: 8px 10px;
    font-family: 'Outfit',sans-serif;
    font-size: 12px;
    text-align: left;
    cursor: pointer;
    transition: background .15s ease, border-color .15s ease;
  }
  .attachment-option:hover { background: rgba(255,255,255,0.04); border-color: var(--border); }
  .attachment-chip-area { padding: 10px 13px 0; display: flex; align-items: center; }
  .attachment-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    max-width: 100%;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border2);
    border-radius: 999px;
    padding: 6px 10px;
  }
  .attachment-chip-name {
    font-size: 11.5px;
    color: var(--muted2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 240px;
  }
  .attachment-chip-remove {
    border: none;
    background: transparent;
    color: var(--muted2);
    cursor: pointer;
    font-size: 12px;
    line-height: 1;
    padding: 0;
  }
  .attachment-chip-remove:hover { color: var(--danger); }
  .char-count { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--muted); transition: color .2s; }
  .input-disclaimer { margin-top: 7px; text-align: center; font-size: 11px; color: var(--muted); }
  
  .modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(10px); z-index: 300; display: flex; align-items: center; justify-content: center; padding: 20px; opacity: 0; pointer-events: none; transition: opacity .25s; }
  .modal-overlay.show { opacity: 1; pointer-events: all; }
  .modal { background: rgba(8,7,26,0.92); backdrop-filter: blur(30px); border: 1px solid var(--border2); border-radius: 20px; width: 100%; max-width: 520px; max-height: 82vh; display: flex; flex-direction: column; box-shadow: 0 40px 80px rgba(0,0,0,0.6); transform: scale(.95) translateY(10px); transition: transform .25s cubic-bezier(0.16,1,0.3,1); overflow: hidden; }
  .modal-overlay.show .modal { transform: scale(1) translateY(0); }
  .modal-header { padding: 20px 24px 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-shrink: 0; }
  .modal-header h3 { font-size: 16px; font-weight: 700; }
  .modal-close { width: 28px; height: 28px; background: rgba(255,255,255,0.04); border: none; color: var(--muted2); cursor: pointer; font-size: 14px; display: flex; align-items: center; justify-content: center; border-radius: 7px; transition: background .15s, color .15s; }
  .modal-close:hover { background: rgba(255,77,109,0.1); color: var(--danger); }
  .modal-body { padding: 20px 24px; overflow-y: auto; flex: 1; font-size: 13.5px; line-height: 1.75; color: var(--muted2); }
  .modal-footer { padding: 14px 24px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; flex-shrink: 0; }

  /* Settings modal (placeholder options) */
  .settings-list { display: flex; flex-direction: column; gap: 10px; }
  .settings-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 14px;
    border: 1px solid var(--border2);
    border-radius: 12px;
    background: rgba(255,255,255,0.02);
    color: var(--text);
    font-family: 'Outfit',sans-serif;
    font-size: 14px;
    user-select: none;
  }
  .settings-row:hover { border-color: rgba(108,99,255,0.25); box-shadow: 0 0 0 3px rgba(108,99,255,0.06); }
  .settings-arrow { color: var(--accent2); font-size: 16px; }

  .settings-row-action { cursor: pointer; }

  .settings-modal {
    animation: settingsIn 0.35s cubic-bezier(0.16,1,0.3,1) both;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .settings-header {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--muted2);
  }

  .settings-section-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--muted2);
    margin-bottom: 10px;
  }

  .settings-usage {
    padding: 14px 14px 12px;
    border: 1px solid var(--border2);
    border-radius: 16px;
    background: rgba(255,255,255,0.02);
  }

  .settings-usage-percentage {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 700;
    color: var(--accent2);
    margin-bottom: 4px;
  }

  .settings-usage-reset {
    font-size: 12px;
    color: var(--muted2);
    margin-bottom: 10px;
  }

  .settings-usage-bar {
    height: 10px;
    border-radius: 999px;
    background: rgba(255,255,255,0.06);
    overflow: hidden;
  }

  .settings-usage-bar-fill {
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent2), var(--cyan));
    transition: width 0.85s cubic-bezier(0.16,1,0.3,1);
  }

  @keyframes settingsIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  .legal h4 { font-size: 13px; font-weight: 700; color: var(--text); margin: 16px 0 6px; }
  .legal h4:first-of-type { margin-top: 0; }
  .legal p { font-size: 13px; color: var(--muted2); margin-bottom: 4px; line-height: 1.75; }
  .legal-date { font-size: 11px; color: var(--muted); margin-bottom: 16px !important; font-style: italic; }
  .btn-secondary { padding: 9px 18px; background: rgba(255,255,255,0.04); border: 1px solid var(--border2); border-radius: 9px; color: var(--muted2); font-family: 'Outfit',sans-serif; font-size: 13px; cursor: pointer; transition: background .15s, color .15s; }
  .btn-secondary:hover { background: rgba(255,255,255,0.08); color: var(--text); }
  .btn-danger { padding: 9px 18px; background: rgba(255,77,109,0.1); border: 1px solid rgba(255,77,109,0.3); border-radius: 9px; color: var(--danger); font-family: 'Outfit',sans-serif; font-size: 13px; font-weight: 600; cursor: pointer; transition: background .15s; }
  .btn-danger:hover { background: rgba(255,77,109,0.2); }
  
  .toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px); background: rgba(8,7,26,0.92); backdrop-filter: blur(20px); border: 1px solid var(--border2); border-radius: 11px; padding: 10px 18px; font-size: 13px; color: var(--text); box-shadow: 0 8px 28px rgba(0,0,0,0.5); z-index: 400; opacity: 0; transition: all .35s cubic-bezier(0.16,1,0.3,1); pointer-events: none; white-space: nowrap; }
  .toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
  
  @media (max-width: 640px) { .suggestions { grid-template-columns: 1fr; } .messages { padding: 0 16px; } .input-area { padding: 12px 16px 14px; } .sidebar { position: absolute; left: 0; top: 0; height: 100%; z-index: 20; } }
  .history-label { font-size: 10px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); padding: 10px 8px 5px; }
.chat-item { display: flex; align-items: center; gap: 9px; padding: 8px 10px; border-radius: 8px; cursor: pointer; transition: background .15s; position: relative; overflow: hidden; white-space: nowrap; }
.chat-item:hover { background: var(--surface2); }
.chat-item.active { background: var(--accentbg); }
.chat-item.active::before { content: ''; position: absolute; left: 0; top: 20%; bottom: 20%; width: 3px; background: var(--accent); border-radius: 0 3px 3px 0; }
.chat-item-icon { font-size: 13px; min-width: 16px; text-align: center; }
.chat-item-text { font-size: 12.5px; color: var(--muted2); overflow: hidden; text-overflow: ellipsis; flex: 1; }
.chat-item.active .chat-item-text { color: var(--accent2); }
.chat-item-del { opacity: 0; width: 18px; height: 18px; min-width: 18px; background: none; border: none; color: var(--muted); cursor: pointer; font-size: 11px; display: flex; align-items: center; justify-content: center; border-radius: 4px; transition: opacity .15s, color .15s; }
.chat-item:hover .chat-item-del { opacity: 1; }
.chat-item-del:hover { color: var(--danger); }

/* ============================================================
   Mobile (max-width: 768px) — overlays & touch; desktop unchanged
   ============================================================ */
@media (max-width: 768px) {
  body {
    font-size: 15px;
    -webkit-tap-highlight-color: transparent;
  }

  /* 1) Sidebar: off-canvas overlay; open with .sidebar-mobile-open (see toggleSidebar in app.js) */
  #sidebar {
    position: fixed !important;
    left: 0;
    top: 0;
    width: min(100vw, var(--sidebar-w)) !important;
    min-width: min(100vw, var(--sidebar-w)) !important;
    max-width: min(100vw, 300px);
    height: 100vh !important;
    height: 100dvh !important;
    z-index: 220;
    transform: translateX(-100%);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    box-shadow: none;
    /* Sidebar backdrop */
  #sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 219;
    backdrop-filter: blur(4px);
  }
  #sidebar-backdrop.show { display: none; }

  /* Suggestion cards — single column */
  .suggestions {
    grid-template-columns: 1fr !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 4px;
  }

  /* Pricing modal — full screen */
  .modal {
    max-height: 100vh !important;
    height: 100dvh !important;
    border-radius: 0 !important;
    margin: 0 !important;
  }
  .modal-overlay {
    padding: 0 !important;
    align-items: flex-end !important;
  }
  .upgrade-pricing-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .upgrade-subscribe-btn {
    min-height: 48px !important;
    font-size: 15px !important;
  }

  /* General padding fixes */
  .chat-area { padding: 16px 0 !important; }
  .input-area { padding: 10px 12px 12px !important; }
  .messages { padding: 0 12px !important; }
  .modal-body { padding: 16px !important; }
  .modal-header { padding: 16px !important; }

  /* Input zoom fix */
  input, textarea { font-size: 16px !important; }
  }
  #sidebar.sidebar-mobile-open {
    transform: translateX(0);
    box-shadow: 12px 0 48px rgba(0, 0, 0, 0.55);
  }
  /* Mobile drawer uses full panel width; ignore desktop collapsed strip */
  #sidebar.collapsed {
    width: min(100vw, var(--sidebar-w)) !important;
    min-width: min(100vw, var(--sidebar-w)) !important;
  }
  /* When open on mobile, show full sidebar content even if .collapsed from desktop */
  #sidebar.collapsed.sidebar-mobile-open .logo-text,
  #sidebar.collapsed.sidebar-mobile-open .logo-icon {
    opacity: 1 !important;
    width: auto !important;
    display: flex !important;
    overflow: visible !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .logo {
    width: auto !important;
    flex: 1 1 auto !important;
    min-width: 0 !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .new-chat-label {
    opacity: 1 !important;
    width: auto !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .new-chat-btn {
    width: auto !important;
    min-width: 0 !important;
    max-width: none !important;
    height: auto !important;
    margin-left: 10px !important;
    margin-right: 10px !important;
    padding: 9px 12px !important;
    justify-content: flex-start !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .history-section {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    flex: 1 1 auto !important;
    min-height: 0 !important;
    max-height: none !important;
    overflow-y: auto !important;
    padding: 6px 8px 0 !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .sidebar-upgrade-btn .upgrade-btn-icon {
    display: none !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .sidebar-upgrade-btn .upgrade-btn-label {
    display: inline !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .sidebar-upgrade-btn {
    width: 100% !important;
    min-width: 0 !important;
    max-width: none !important;
    height: auto !important;
    min-height: 44px !important;
    padding: 8px !important;
    font-size: 12px !important;
    gap: 6px !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .user-info {
    opacity: 1 !important;
    width: auto !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .sidebar-footer {
    align-items: stretch !important;
    margin-top: 0 !important;
  }
  #sidebar.collapsed.sidebar-mobile-open .user-row {
    justify-content: flex-start !important;
    padding-left: 10px !important;
    padding-right: 10px !important;
  }

  #app::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 210;
    pointer-events: none;
    opacity: 0;
    transition: opacity .25s ease;
  }
  #app:has(#sidebar.sidebar-mobile-open)::before {
    opacity: 1;
  }

  /* 5) Compact topbar */
  .topbar {
    min-height: 48px;
    height: 48px;
    padding: 0 12px;
    gap: 8px;
  }
  .model-badge {
    font-size: 11px;
    padding: 5px 10px;
    gap: 6px;
  }
  /* 3) Chat: full width, tighter horizontal padding */
  .chat-area {
    padding: 16px 0 12px;
  }
  .messages {
    padding: 0 12px !important;
    max-width: none !important;
    gap: 18px;
  }
  .msg-text {
    font-size: 15px;
    line-height: 1.75;
  }
  .msg-name {
    font-size: 12px;
  }

  /* 6) Suggestions single column */
  .suggestions {
    grid-template-columns: 1fr !important;
    max-width: none;
    gap: 12px;
  }
  .welcome {
    padding: 28px 16px;
  }
  .welcome h2 {
    font-size: 24px;
  }
  .welcome p {
    font-size: 15px;
  }
  .suggestion-card {
    padding: 16px 18px;
  }
  .s-title {
    font-size: 14px;
  }
  .s-desc {
    font-size: 12px;
  }

  /* 4) Input fixed to bottom, larger touch targets */
  .input-area {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    padding: 12px 14px max(12px, env(safe-area-inset-bottom, 0px)) !important;
    border-top: 1px solid var(--border);
    background: rgba(8, 7, 26, 0.94);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
  }
  .main {
    width: 100%;
    min-width: 0;
    padding-bottom: calc(130px + env(safe-area-inset-bottom, 0px));
  }
  .input-top {
    padding: 14px 14px 12px;
    gap: 10px;
    align-items: center;
  }
  .input-footer {
    padding: 0 14px 12px;
  }
  textarea#chat-input {
    font-size: 16px;
    min-height: 28px;
  }
  .send-btn {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 10px;
    font-size: 15px;
  }
  .mic-btn {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
  }
  .input-action-btn {
    min-height: 44px;
    padding: 10px 14px;
    font-size: 13px;
    border-radius: 8px;
  }
  .char-count {
    font-size: 11px;
  }
  .input-disclaimer {
    font-size: 12px;
    margin-top: 8px;
  }

  /* 2) Login: single column, hide branding panel */
  #login-page {
    grid-template-columns: 1fr !important;
  }
  .login-left {
    display: none !important;
  }
  .login-right {
    padding: 28px 20px !important;
    min-height: 100%;
    align-items: flex-start;
    padding-top: 36px;
  }
  .login-mobile-logo {
    display: flex !important;
  }
  .login-title {
    font-size: 25px;
  }
  .login-sub {
    font-size: 14px;
  }

  /* 7) Beta gate: full width + padding */
  #beta-page {
    padding: 20px 16px !important;
    align-items: flex-start;
    justify-content: center;
    padding-top: max(24px, env(safe-area-inset-top, 0px));
  }
  .beta-card {
    max-width: none !important;
    width: 100%;
    padding: 32px 22px !important;
    box-sizing: border-box;
  }
  .beta-title {
    font-size: 22px;
  }
  .beta-desc {
    font-size: 14px;
  }

  /* 8) Minimum 44px touch targets (buttons) */
  .btn-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 10px;
    font-size: 16px;
  }
  .btn-primary,
  .btn-google {
    min-height: 44px;
    padding-top: 12px;
    padding-bottom: 12px;
    font-size: 15px;
  }
  .new-chat-btn {
    min-height: 44px;
    padding: 10px 14px;
    margin-left: 10px;
    margin-right: 10px;
  }
  .sidebar-header {
    min-height: 48px;
    padding: 10px 12px;
  }
  .sidebar-upgrade-btn {
    min-height: 44px !important;
  }
  .modal-close {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
  }
  .btn-secondary,
  .btn-danger {
    min-height: 44px;
    padding-left: 16px;
    padding-right: 16px;
  }
  .skip-btn {
    min-height: 44px;
    padding: 10px 20px;
    font-size: 13px;
  }
  .chat-item {
    min-height: 44px;
    padding: 10px 12px;
  }
  .chat-item-del {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    opacity: 1;
    font-size: 14px;
  }

  .proc-label {
    font-size: 13px;
  }

  /* Settings modal full-screen on mobile */
  .modal.settings-modal-open {
    width: 100vw;
    max-width: 100vw;
    height: 100vh;
    max-height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-bottom: none;
  }

  .modal.settings-modal-open .modal-header {
    padding-top: max(16px, env(safe-area-inset-top, 0px));
  }

  .modal.settings-modal-open .modal-body {
    padding: 16px;
  }

  .modal.settings-modal-open .settings-usage {
    padding: 16px;
  }

  .modal.settings-modal-open .settings-usage-bar {
    height: 12px;
  }

  .modal.settings-modal-open .settings-row {
    min-height: 48px;
    font-size: 15px;
  }
}

/* ============================================================
   Upgrade / Pricing modal
   ============================================================ */
.modal.upgrade-modal-open {
  /* Desktop sizing override stays subtle; full mobile handled below */
  max-width: 980px;
}

.upgrade-modal-content {
  animation: upgradeModalContentIn 0.45s cubic-bezier(0.16,1,0.3,1) both;
}

@keyframes upgradeModalContentIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.upgrade-countdown {
  padding: 10px 6px 18px;
}

.upgrade-countdown-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted2);
  margin-bottom: 10px;
}

.upgrade-countdown-time {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.upgrade-time-box {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border2);
  border-radius: 14px;
  padding: 12px 10px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.upgrade-time-val {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 800;
  font-size: 18px;
  color: var(--accent2);
}

.upgrade-time-unit {
  display: block;
  margin-top: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--muted2);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.upgrade-pricing-grid {
  display: flex;
  align-items: stretch;
  gap: 14px;
  margin-top: 4px;
}

.pricing-card {
  flex: 1 1 0;
  height: 100%;
  position: relative;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 18px;
  background: rgba(255,255,255,0.02);
  backdrop-filter: blur(14px);
  padding: 18px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
  animation: pricingCardIn 0.55s cubic-bezier(0.16,1,0.3,1) both;
}

.upgrade-pricing-grid .pricing-card:nth-child(1) { animation-delay: 0.05s; }
.upgrade-pricing-grid .pricing-card:nth-child(2) { animation-delay: 0.14s; }
.upgrade-pricing-grid .pricing-card:nth-child(3) { animation-delay: 0.23s; }

@keyframes pricingCardIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255,255,255,0.22);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.08), 0 0 26px rgba(108,99,255,0.28), 0 30px 95px rgba(0,0,0,0.58);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.pricing-card.popular {
  border-color: rgba(0,212,255,0.65) !important;
  box-shadow: 0 0 0 1px rgba(0,212,255,0.22), 0 25px 90px rgba(0,0,0,0.55) !important;
}

.pricing-card-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text);
}

.pricing-original-row,
.pricing-new-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.pricing-original-label,
.pricing-new-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted2);
}

.strike {
  text-decoration: line-through;
  opacity: 0.6;
}

.pricing-new {
  font-family: 'JetBrains Mono', monospace;
  font-size: 24px;
  font-weight: 900;
  color: var(--accent2);
}

.upgrade-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.upgrade-feature-item {
  font-size: 12.5px;
  color: var(--muted2);
  line-height: 1.4;
}

.pricing-policy-link {
  margin-top: 4px;
  align-self: flex-start;
  background: none;
  border: none;
  padding: 0;
  font-size: 11px;
  line-height: 1.45;
  color: var(--muted2);
  text-decoration: underline;
  cursor: pointer;
  font-family: 'Outfit',sans-serif;
}

.pricing-policy-link:hover {
  color: var(--accent2);
}

.upgrade-subscribe-btn {
  width: 100%;
  height: 44px;
  margin-top: auto;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  cursor: pointer;
  font-family: 'Outfit', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: #03020a;
  background: linear-gradient(135deg, var(--accent2), var(--cyan));
  box-shadow: 0 14px 40px rgba(108,99,255,0.18);
  transition: transform .15s ease, box-shadow .2s ease, filter .2s ease;
}

.upgrade-subscribe-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.04);
  box-shadow: 0 22px 70px rgba(108,99,255,0.28);
}

.popular-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0,212,255,0.12);
  border: 1px solid rgba(0,212,255,0.25);
  color: var(--accent2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.vip-crown-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255,215,0,0.12);
  border: 1px solid rgba(255,215,0,0.28);
  color: #ffd700;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.upgrade-free-note {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.02);
  color: var(--muted2);
  font-size: 12.5px;
}

.upgrade-global-disclaimer {
  margin-top: 10px;
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--muted2);
}

/* Mobile: full screen upgrade modal + stacked cards */
@media (max-width: 768px) {
  .modal.upgrade-modal-open {
    width: 100vw;
    max-width: 100vw;
    height: 100vh;
    max-height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-bottom: none;
  }

  .modal.upgrade-modal-open .modal-body {
    padding: 16px;
  }

  .upgrade-countdown-time {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .upgrade-pricing-grid {
    flex-direction: column;
    gap: 12px;
  }

  .pricing-card {
    padding: 18px 14px 16px;
  }

  .upgrade-subscribe-btn {
    height: 48px;
    font-size: 14px;
  }

  .pricing-card {
    flex: none;
    width: 100%;
    height: auto !important;
    min-height: unset;
  }

  .modal-overlay {
    align-items: flex-start !important;
    padding: 0 !important;
  }

  .modal.upgrade-modal-open .modal-body {
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    max-height: calc(100dvh - 120px);
  }

  @media (min-width: 769px) {
    .mobile-only { display: none !important; }
  }
}

.chat-item-rename { opacity: 0; width: 18px; height: 18px; min-width: 18px; background: none; border: none; color: var(--muted2); cursor: pointer; font-size: 11px; display: flex; align-items: center; justify-content: center; border-radius: 4px; transition: opacity .15s, color .15s; }
.chat-item:hover .chat-item-rename { opacity: 1; }
.chat-item-rename:hover { color: var(--accent2); }