/* first block removed — consolidated modern styles below */
/* ─── Reset & variables ──────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-top: #061226;
  --bg-bottom: #071025;
  --panel: rgba(255,255,255,0.025);
  --card: rgba(255,255,255,0.02);
  --muted: rgba(230,237,243,0.42);
  --text: #e6edf3;
  --accent-start: #7c3aed;
  --accent-end: #3b82f6;
  --accent-solid: #6d28d9;
  --success: #3fb950;
  --danger: #f85149;
  --radius: 14px;
  --sidebar-w: 300px;
  --glass: rgba(255,255,255,0.03);
  --shadow-lg: 0 10px 30px rgba(2,6,23,0.6);
  --transition: 180ms cubic-bezier(.2,.9,.2,1);
}
html,body{height:100%;font-family:'Inter',system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;color:var(--text);background:linear-gradient(180deg,var(--bg-top),var(--bg-bottom));overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
button{cursor:pointer;border:none;background:none;color:inherit;font:inherit}
input,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}

/* Scrollbar (subtle) */
*::-webkit-scrollbar{height:10px;width:8px}
*::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.05);border-radius:10px}

/* Layout */
#app{display:flex;height:100vh;overflow:hidden}

/* Sidebar */
#sidebar{
  width:var(--sidebar-w);min-width:var(--sidebar-w);
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-right:1px solid rgba(255,255,255,0.03);
  display:flex;flex-direction:column;padding:18px;gap:12px;z-index:50;
}
.sidebar-logo{display:flex;align-items:center;gap:12px;padding:8px 4px 12px}
.sidebar-logo img{width:40px;height:40px;border-radius:10px;object-fit:cover}
.sidebar-logo .brand{font-size:18px;font-weight:700}

#btn-new{display:flex;align-items:center;gap:10px;justify-content:center;padding:12px 18px;border-radius:14px;background:linear-gradient(90deg,var(--accent-start),var(--accent-end));color:white;font-weight:700;box-shadow:0 14px 44px rgba(59,130,246,0.14);border:none}
#btn-new svg{opacity:.98}

.model-section label{font-size:11px;color:var(--muted);text-transform:uppercase;margin-bottom:6px}
#model-select{width:100%;background:transparent;border:1px solid rgba(255,255,255,0.04);color:var(--text);border-radius:8px;padding:9px 12px;font-size:13px}

.history-section{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding:16px 12px 8px;background:rgba(255,255,255,0.015);border-radius:18px;border:1px solid rgba(255,255,255,0.04);box-shadow:0 16px 40px rgba(2,6,23,0.18)}
.history-section .label{font-size:11px;color:var(--muted);text-transform:uppercase;padding-bottom:10px;letter-spacing:.14em}
.hist-item{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 12px 12px 14px;border-radius:14px;font-size:14px;cursor:pointer;background:rgba(255,255,255,0.02);border:1px solid transparent;transition:background var(--transition),border-color var(--transition),transform var(--transition),box-shadow var(--transition)}
.hist-item:hover{background:rgba(255,255,255,0.04);transform:translateX(2px);border-color:rgba(255,255,255,0.08);box-shadow:0 12px 28px rgba(0,0,0,0.08)}
.hist-item.active{background:linear-gradient(180deg,rgba(124,58,237,0.12),rgba(59,130,246,0.08));border-color:rgba(124,58,237,0.18);box-shadow:inset 0 0 0 1px rgba(124,58,237,0.12)}
.hist-item .hi-content{display:flex;align-items:center;gap:10px;flex:1;min-width:0}
.hi-icon{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:rgba(255,255,255,0.05);font-size:16px}
.hi-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hi-del{width:32px;height:32px;border-radius:12px;background:rgba(255,255,255,0.03);color:var(--muted);display:flex;align-items:center;justify-content:center;transition:background var(--transition),color var(--transition)}
.hi-del:hover{background:rgba(248,81,73,0.16);color:#f85149}
.hi-del:focus{outline:2px solid rgba(124,58,237,0.35);outline-offset:2px}

.sidebar-footer{font-size:12px;color:var(--muted);text-align:center;padding-top:8px;border-top:1px solid rgba(255,255,255,0.02)}

/* Main */
#main{flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative}
#messages{flex:1;display:flex;flex-direction:column;gap:12px;overflow-y:auto;padding:26px}
.hidden{display:none!important}

/* visual depth at top of main */
#main::before{content:'';position:absolute;left:0;right:0;top:0;height:200px;background:linear-gradient(180deg,rgba(6,10,20,0.18),transparent);pointer-events:none}

/* Topbar */
#topbar{display:flex;align-items:center;gap:12px;padding:14px 20px;border-bottom:1px solid rgba(255,255,255,0.02);background:transparent}
#btn-sidebar-toggle{font-size:18px;padding:6px 9px;border-radius:9px;color:var(--muted)}
#topbar-title{font-size:16px;font-weight:700;flex:1}
.btn-topbar{padding:7px 12px;border-radius:9px;border:1px solid rgba(255,255,255,0.02);color:var(--muted)}
.btn-topbar-primary{background:linear-gradient(90deg,#4f46e5,#06b6d4);color:white}
#topbar-model-badge{font-size:12px;color:var(--muted);padding:6px 10px;border-radius:999px;background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.02)}

/* Welcome */
#welcome{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:40px;text-align:center}
#welcome h2{font-size:26px;font-weight:800;letter-spacing:-0.02em}
#welcome p{color:var(--muted);font-size:15px;max-width:680px}
.suggestion-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;width:100%;max-width:760px}
.suggestion{background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.02));border-radius:12px;padding:14px;cursor:pointer;transition:transform var(--transition),box-shadow var(--transition)}
.suggestion:hover{transform:translateY(-6px);box-shadow:0 14px 40px rgba(2,6,23,0.6)}
.suggestion strong{display:block;margin-bottom:6px}

/* Messages */
#messages{flex:1;overflow-y:auto;padding:26px;display:flex;flex-direction:column;gap:12px}
.msg{display:flex;gap:14px;padding:6px 0;align-items:flex-start}

.msg-avatar{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0;overflow:hidden;transition:transform .18s ease}
.msg-avatar img{width:100%;height:100%;object-fit:cover;border-radius:10px}
.msg.user .msg-avatar{background:linear-gradient(90deg,var(--accent-start),var(--accent-end));order:2}
.msg.user{flex-direction:row-reverse}
.ai-avatar{background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0.01));border:1px solid rgba(255,255,255,0.02)}

.msg-body{max-width:78%;display:flex;flex-direction:column;gap:8px}
.msg.user .msg-body{align-items:flex-end}

.msg-bubble{padding:14px 18px;border-radius:16px;font-size:15px;line-height:1.6;word-break:break-word;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));border:1px solid rgba(255,255,255,0.03);box-shadow:0 8px 28px rgba(2,6,23,0.45);transition:transform .18s ease,box-shadow .18s ease}
.msg-bubble:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(2,6,23,0.5)}
.msg.user .msg-bubble{background:linear-gradient(180deg, rgba(255,255,255,0.22), rgba(255,255,255,0.14));color:#fff;border:1px solid rgba(255,255,255,0.22);box-shadow:0 10px 24px rgba(2,6,23,0.22)}
.msg.ai .msg-bubble{background:transparent}
.msg.error .msg-bubble{background:rgba(248,81,73,0.08);border:1px solid rgba(248,81,73,0.18);color:#ff9492}

/* Markdown inside bubble */
.msg-bubble p{margin:0 0 .6em}
.msg-bubble h1,.msg-bubble h2,.msg-bubble h3{margin:.6em 0 .3em}
.msg-bubble blockquote{border-left:3px solid rgba(255,255,255,0.04);padding-left:12px;color:var(--muted)}
.msg-bubble code{background:rgba(0,0,0,0.35);padding:4px 6px;border-radius:6px;color:#a7f3d0;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,monospace}

/* Code blocks */
.code-wrap{position:relative;margin:.6em 0;border-radius:10px;overflow:hidden}
.code-header{display:flex;align-items:center;justify-content:space-between;background:rgba(0,0,0,0.35);padding:7px 12px;font-size:12px;color:var(--muted);border-bottom:1px solid rgba(255,255,255,0.02)}
.btn-copy{font-size:12px;padding:6px 8px;border-radius:8px;background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.02);color:var(--muted)}
.btn-copy.copied{background:var(--success);color:white;border-color:rgba(63,185,80,0.12)}
.code-wrap pre{margin:0;background:#0b1220;padding:12px}

/* Typing indicator */
.typing-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--muted);animation:chat-blink 1.2s infinite}
.typing-dot:nth-child(2){animation-delay:.2s}
.typing-dot:nth-child(3){animation-delay:.4s}
@keyframes chat-blink{0%,80%,100%{opacity:.2}40%{opacity:1}}

.msg-actions{display:flex;gap:8px;opacity:0;transition:opacity var(--transition)}
.msg:hover .msg-actions{opacity:1}
.btn-action{font-size:12px;padding:6px 8px;border-radius:8px;background:transparent;border:1px solid rgba(255,255,255,0.02);color:var(--muted)}

/* Input area (modern) */
#input-area{padding:16px 22px 18px;border-top:1px solid rgba(255,255,255,0.02);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
#input-wrap{display:flex;align-items:flex-end;gap:12px;background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.008));padding:14px;border-radius:16px;border:1px solid rgba(255,255,255,0.03);transition:box-shadow var(--transition),border-color var(--transition)}
#input-wrap:focus-within{box-shadow:0 12px 30px rgba(59,130,246,0.08)}
#user-input{flex:1;background:transparent;border:none;outline:none;resize:none;font-size:15px;line-height:1.6;color:var(--text);min-height:56px;padding:8px}
#user-input:focus{outline:none}

.note-muted{font-size:12px;color:var(--muted)}
#user-input::placeholder{color:rgba(230,237,243,0.35)}
#btn-send{min-width:110px;height:50px;border-radius:12px;background:linear-gradient(90deg,var(--accent-start),var(--accent-end));display:flex;align-items:center;justify-content:center;padding:0 18px;box-shadow:0 12px 30px rgba(59,130,246,0.12);transition:transform .12s ease,box-shadow .12s ease;white-space:nowrap}
#btn-send svg{width:18px;height:18px;fill:white}
#btn-send:hover{transform:translateY(-3px);box-shadow:0 20px 44px rgba(59,130,246,0.14)}
#btn-send:active{transform:translateY(-1px)}
#btn-send:disabled{opacity:.55;cursor:not-allowed}
#btn-send.streaming{animation:pulse 1.2s infinite}
@keyframes pulse{0%{box-shadow:0 12px 30px rgba(59,130,246,0.12)}50%{box-shadow:0 20px 44px rgba(59,130,246,0.18)}100%{box-shadow:0 12px 30px rgba(59,130,246,0.12)}}

/* Input toolbar */
#input-toolbar{display:flex;align-items:center;gap:8px;padding-top:8px}
.input-spacer{flex:1}
#btn-attach,#btn-mic{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,0.02);display:flex;align-items:center;justify-content:center;color:var(--muted)}
#btn-model-badge{display:flex;align-items:center;gap:8px;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.02)}

/* Model dropdown */
#model-dropdown{display:none;position:absolute;bottom:calc(100% + 8px);left:22px;width:320px;background:rgba(0,0,0,0.6);border-radius:12px;padding:8px;border:1px solid rgba(255,255,255,0.03);box-shadow:0 20px 60px rgba(2,6,23,0.6)}
#model-dropdown.open{display:block}
.model-opt{padding:10px;border-radius:8px;color:var(--text);cursor:pointer}
.model-opt:hover{background:rgba(255,255,255,0.02)}
.model-opt.selected{background:linear-gradient(90deg,#7c3aed22,#3b82f622)}

#input-hint{font-size:12px;color:var(--muted);text-align:center;margin-top:8px}

/* Responsive */
@media(max-width:800px){#sidebar{display:none}#app{display:block}#topbar{padding:12px}#messages{padding:16px}#input-area{padding:12px}}

/* Central AI card used in #welcome */

.ai-card{position:relative;max-width:980px;margin:0 auto}
.ai-card .absolute-blobs{position:absolute;inset:0;pointer-events:none}
.card-panel{background:linear-gradient(180deg, rgba(8,12,20,0.65), rgba(8,12,20,0.45));border-radius:16px;padding:14px;border:1px solid rgba(255,255,255,0.03);box-shadow:0 28px 80px rgba(2,6,23,0.6);backdrop-filter:blur(8px);margin-top:160px}
#chat-input{padding:0 18px 22px}
#chat-input .card-panel{margin-top:0;max-width:980px;margin-left:auto;margin-right:auto}
/* Lower the whole AI card to sit further down the welcome area */
.ai-card{margin-top:80px}
.btn-topbar{padding:7px 10px;border-radius:8px;border:1px solid rgba(255,255,255,0.02);color:var(--muted);background:transparent;font-size:13px}
.btn-topbar-primary{padding:8px 10px;border-radius:10px;background:linear-gradient(90deg,var(--accent-start),var(--accent-end));color:white;font-weight:600}

/* Ensure suggestions inside card look like suggestions */
.ai-card .suggestion{background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.02));border-radius:10px;padding:8px;font-size:13px}

/* Compact welcome layout adjustments */
#welcome{padding:18px 18px;align-items:center;justify-content:flex-start;min-height:150px}
.w-layout{padding:8px 18px;display:flex;justify-content:center}
.w-icon img{width:72px;height:72px;border-radius:14px;object-fit:cover}
.card-panel textarea{min-height:56px}

/* Welcome head */
.welcome-head{display:flex;flex-direction:column;gap:16px;align-items:center;justify-content:center;margin-bottom:6px}
.w-meta{display:flex;flex-direction:column;align-items:center;text-align:center}
.w-title{font-size:20px;margin:0 0 4px}
.w-sub{margin:0;color:var(--muted);font-size:13px}

/* Input row */
.input-row{display:flex;flex-direction:column;gap:14px;position:relative}
.input-block{display:flex;flex-direction:column;gap:12px}
.input-row textarea{width:100%;background:transparent;border:1px solid rgba(255,255,255,0.05);padding:16px 18px;border-radius:18px;color:var(--text);font-size:15px;min-height:80px;max-height:160px;resize:none;box-shadow:inset 0 0 0 1px rgba(255,255,255,0.02)}
.input-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.input-note{font-size:13px;color:var(--muted);}
.send-button{min-width:140px;height:50px;border-radius:14px;background:linear-gradient(135deg,var(--accent-start),var(--accent-end));color:white;border:none;font-weight:700;box-shadow:0 20px 60px rgba(99,102,241,0.18);display:flex;align-items:center;justify-content:center;padding:0 20px;cursor:pointer;white-space:nowrap;transition:transform .14s ease,box-shadow .14s ease}
.send-button:hover{transform:translateY(-1px);box-shadow:0 22px 66px rgba(99,102,241,0.2)}
.send-button:active{transform:translateY(0) scale(.98)}
.send-button:disabled{opacity:.6;cursor:not-allowed}
.image-upload-label{font-size:13px;color:var(--muted);margin-bottom:6px}

/* Image upload panel */
.image-upload-panel{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.image-upload-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:20px;border-radius:18px;border:2px dashed rgba(255,255,255,0.16);background:rgba(255,255,255,0.03);color:var(--muted);text-align:center;cursor:pointer;transition:all .18s}
.image-upload-dropzone strong{color:var(--text);font-size:14px}
.image-upload-dropzone span{font-size:13px}
.image-upload-dropzone.active{border-color:rgba(99,102,241,0.45);background:rgba(59,130,246,0.08);color:var(--text)}
.image-upload-dropzone input{display:none}
.image-upload-helper{font-size:12px;color:var(--muted);}
.image-preview{display:flex;align-items:center;gap:14px;padding:14px;border-radius:18px;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);margin-top:0;max-width:100%;box-shadow:0 12px 30px rgba(0,0,0,0.12)}
.image-preview.hidden{display:none}
.preview-thumb{width:72px;height:72px;border-radius:16px;overflow:hidden;flex-shrink:0;border:1px solid rgba(255,255,255,0.08)}
.preview-thumb img{width:100%;height:100%;object-fit:cover}
.preview-meta{display:flex;flex-direction:column;gap:4px;min-width:0}
.preview-name{font-size:14px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.preview-size{font-size:12px;color:var(--muted)}
.msg-image-wrap{margin-bottom:14px}
.msg-image{width:auto;max-width:320px;max-height:320px;border-radius:18px;object-fit:cover;box-shadow:0 18px 40px rgba(0,0,0,.18)}
.btn-clear{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:var(--text);padding:9px 14px;border-radius:999px;cursor:pointer;transition:all .18s}
.btn-clear:hover{background:rgba(255,255,255,.12)}

/* Suggestions */
.suggestion-list{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}
.suggestion{display:flex;flex-direction:column;align-items:flex-start;gap:6px;background:linear-gradient(180deg, rgba(11,17,26,0.6), rgba(11,17,26,0.45));border-radius:12px;padding:10px 14px;font-size:13px;min-width:180px;border:1px solid rgba(255,255,255,0.02);box-shadow:0 12px 36px rgba(2,6,23,0.55)}
.suggestion strong{font-size:13px}
.suggestion span{font-size:12px;color:var(--muted)}

@media(max-width:900px){
  #welcome{padding:14px}
  .w-icon img{width:64px;height:64px}
  .card-panel textarea{min-height:48px}
  .suggestion-list{gap:8px}
  .send-button{position:static;transform:none;width:auto;height:auto;padding:8px 12px;border-radius:10px}
  .ai-card{margin-top:36px}
  .card-panel{margin-top:90px}
}


/* --- Animated touches --- */
.w-icon{width:110px;height:110px;display:flex;align-items:center;justify-content:center;border-radius:18px;padding:6px}
.w-icon img{width:90px;height:90px;border-radius:18px;transition:transform .45s cubic-bezier(.2,.9,.2,1),filter .45s;transform-origin:center center;animation:floaty 6s ease-in-out infinite}
.w-icon img.ai-active{animation:floaty 1.6s ease-in-out infinite, spin 1.8s linear infinite;filter:drop-shadow(0 0 30px rgba(124,58,237,0.25)) saturate(120%)}

@keyframes floaty{0%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-8px) rotate(-2deg)}100%{transform:translateY(0) rotate(0deg)}}
@keyframes spin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}

/* Message entrance */
.msg.enter{animation:popIn .22s cubic-bezier(.2,.9,.2,1)}
@keyframes popIn{0%{opacity:0;transform:translateY(8px) scale(.995)}60%{opacity:1;transform:translateY(-4px) scale(1.005)}100%{opacity:1;transform:translateY(0) scale(1)}}

/* Suggestions: glass + hover spark */
.suggestion{position:relative;overflow:hidden}
.suggestion::after{content:'';position:absolute;left:-40%;top:-60%;width:200%;height:200%;background:radial-gradient(circle at 20% 20%, rgba(255,255,255,0.06), transparent 10%), radial-gradient(circle at 80% 80%, rgba(255,255,255,0.02), transparent 18%);opacity:.6;transform:translateY(0);transition:transform .6s ease}
.suggestion:hover::after{transform:translateY(-12%)}
.suggestion strong{font-size:15px}
.suggestion span{display:block;color:var(--muted);margin-top:6px}

/* Subtle background shimmer */
body::before{content:'';position:fixed;left:-20%;top:-30%;width:140%;height:60%;background:linear-gradient(120deg, rgba(124,58,237,0.06), rgba(59,130,246,0.04), transparent 40%);transform:translateZ(0);filter:blur(40px);pointer-events:none}

/* Typing dot accent */
.typing-dot{background:linear-gradient(90deg,var(--accent-start),var(--accent-end))}