/* NexusAI — Premium Dark UI */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}

:root{
  /* Core */
  --bg:         #0a0a0f;
  --bg2:        #111118;
  --bg3:        #1a1a24;
  --bg4:        #22222f;
  --sb:         #0d0d14;
  --border:     #ffffff0d;
  --border2:    #ffffff18;
  --border3:    #ffffff28;

  /* Text */
  --text:       #f0f0f5;
  --t2:         #7a7a9a;
  --t3:         #3d3d5c;

  /* Accent — Logo: lime + cyan */
  --a1:         #c6f135;
  --a2:         #35f1c6;
  --a3:         #f59e0b;
  --a4:         #10b981;
  --grad:       linear-gradient(135deg,#c6f135,#35f1c6);
  --grad2:      linear-gradient(135deg,#f59e0b,#ef4444);
  --glow1:      0 0 40px #c6f13530;
  --glow2:      0 0 40px #35f1c630;

  /* Layout */
  --sb-w:       272px;
  --hh:         54px;
  --radius:     14px;
  --radius-sm:  8px;
  --font:       'Inter',-apple-system,sans-serif;
}

body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:15px;
  line-height:1.6;
}

/* Grid bg */
body::before{
  content:'';
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--border) 1px,transparent 1px),
    linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse 80% 80% at 50% 0%,#000 40%,transparent 100%);
}

button{cursor:pointer;border:none;background:none;font-family:inherit;color:inherit}
input,textarea{font-family:inherit;color:inherit}
::selection{background:var(--a1);color:#fff}
::-webkit-scrollbar{width:3px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:99px}

/* ══════════════════════════════
   AUTH
══════════════════════════════ */
#auth-overlay{
  position:fixed;inset:0;z-index:1000;
  background:var(--bg);
  display:flex;align-items:center;justify-content:center;padding:20px;
}

/* animated bg orbs */
#auth-overlay::before,#auth-overlay::after{
  content:'';position:fixed;border-radius:50%;filter:blur(80px);pointer-events:none;
  animation:orb 8s ease-in-out infinite alternate;
}
#auth-overlay::before{
  width:400px;height:400px;top:-100px;left:-100px;
  background:radial-gradient(circle,#7c3aed25,transparent 70%);
}
#auth-overlay::after{
  width:300px;height:300px;bottom:-80px;right:-80px;
  background:radial-gradient(circle,#06b6d425,transparent 70%);
  animation-delay:-4s;
}
@keyframes orb{from{transform:scale(1) translate(0,0)}to{transform:scale(1.15) translate(20px,20px)}}

.auth-card{
  width:100%;max-width:400px;
  position:relative;z-index:1;
}
.auth-brand{
  display:flex;align-items:center;gap:12px;margin-bottom:32px;
}
.auth-brand img{filter:drop-shadow(var(--glow1))}
.auth-brand-name{font-size:20px;font-weight:600;letter-spacing:-.4px;background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

.auth-title{font-size:26px;font-weight:600;letter-spacing:-.6px;margin-bottom:6px}
.auth-sub{font-size:14px;color:var(--t2);margin-bottom:24px}

.auth-tabs{
  display:flex;
  background:var(--bg2);border-radius:var(--radius-sm);
  padding:3px;margin-bottom:22px;
  border:1px solid var(--border);
}
.auth-tab{
  flex:1;padding:9px;font-size:14px;font-weight:500;
  color:var(--t2);border-radius:6px;transition:.2s;
}
.auth-tab.active{background:var(--bg3);color:var(--text)}
.auth-tab:hover{color:var(--text)}

.auth-input{
  display:block;width:100%;
  background:var(--bg2);
  border:1px solid var(--border2);
  border-radius:var(--radius-sm);
  padding:12px 14px;font-size:14px;
  outline:none;transition:.2s;margin-bottom:10px;
}
.auth-input:focus{border-color:var(--a1);box-shadow:0 0 0 3px #7c3aed18}
.auth-input::placeholder{color:var(--t3)}

.auth-btn{
  width:100%;padding:13px;
  background:var(--grad);color:#fff;
  border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;
  margin-top:4px;transition:.2s;
  position:relative;overflow:hidden;
}
.auth-btn::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,#ffffff20,transparent);
  opacity:0;transition:.2s;
}
.auth-btn:hover::after{opacity:1}
.auth-btn:hover{transform:translateY(-1px);box-shadow:var(--glow1)}
.auth-btn:active{transform:none}
.auth-error{font-size:13px;color:#f87171;text-align:center;margin-top:12px;min-height:18px}

/* ══════════════════════════════
   APP
══════════════════════════════ */
#app{display:none;height:100vh;position:relative;z-index:1}
#backdrop{display:none;position:fixed;inset:0;z-index:50;background:#00000090;backdrop-filter:blur(4px)}

/* ══════════════════════════════
   SIDEBAR
══════════════════════════════ */
#sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sb-w);
  background:var(--sb);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:60;
  transform:translateX(-100%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
}
#sidebar::after{
  content:'';position:absolute;top:0;right:0;bottom:0;width:1px;
  background:linear-gradient(180deg,transparent,var(--a1)60,transparent);
  opacity:0;transition:.3s;
}
#sidebar.open::after{opacity:.4}
#sidebar.open{transform:none;box-shadow:8px 0 60px #00000080}

.sb-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 14px 12px;flex-shrink:0;
}
.sb-logo{
  display:flex;align-items:center;gap:9px;
  font-size:15px;font-weight:600;letter-spacing:-.3px;
}
.sb-logo span{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.sb-header-btns{display:flex;gap:4px}

.sb-btn{
  width:30px;height:30px;display:flex;align-items:center;justify-content:center;
  border-radius:7px;color:var(--t2);transition:.15s;
}
.sb-btn:hover{background:var(--bg3);color:var(--text)}

.sb-search-wrap{
  display:flex;align-items:center;gap:8px;
  margin:0 10px 10px;
  background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:7px 10px;color:var(--t3);
  transition:.2s;
}
.sb-search-wrap:focus-within{border-color:var(--border2)}
.sb-search-wrap input{flex:1;background:none;border:none;outline:none;font-size:13px;color:var(--text)}
.sb-search-wrap input::placeholder{color:var(--t3)}

.sb-body{flex:1;overflow-y:auto;padding:4px 8px 8px}

.sb-label{
  font-size:10px;font-weight:600;color:var(--t3);
  padding:8px 6px 4px;text-transform:uppercase;letter-spacing:1px;
}

.cat-tabs{display:flex;flex-wrap:wrap;gap:4px;padding:2px 0}
.cat-tab{
  font-size:11.5px;padding:4px 10px;
  border-radius:99px;color:var(--t2);
  border:1px solid var(--border);
  transition:.15s;
}
.cat-tab:hover{color:var(--text);border-color:var(--border2)}
.cat-tab.active{
  background:linear-gradient(135deg,#7c3aed20,#06b6d420);
  color:var(--text);border-color:var(--a1);
}

#tool-list{display:flex;flex-direction:column;gap:1px;margin-top:4px}
.tool-item{
  display:flex;align-items:center;gap:9px;
  width:100%;padding:7px 8px;border-radius:8px;
  font-size:13px;color:var(--t2);text-align:left;
  transition:.12s;
}
.tool-item:hover{background:var(--bg2);color:var(--text)}
.tool-item.active{
  background:linear-gradient(90deg,#7c3aed15,transparent);
  color:var(--text);border-left:2px solid var(--a1);padding-left:6px;
}
.tool-em{font-size:14px;width:20px;text-align:center;flex-shrink:0}

.sb-divider{height:1px;background:var(--border);margin:10px 4px}

#history-list{display:flex;flex-direction:column;gap:1px}
.hist-item{
  display:flex;align-items:center;gap:8px;
  width:100%;padding:6px 8px;border-radius:7px;
  font-size:12px;color:var(--t2);text-align:left;transition:.12s;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.hist-item:hover{background:var(--bg2);color:var(--text)}

.sb-footer{
  padding:12px;border-top:1px solid var(--border);flex-shrink:0;
}
.sb-user-row{display:flex;align-items:center;gap:8px}
.sb-av{
  width:30px;height:30px;border-radius:50%;flex-shrink:0;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:#fff;
}
.sb-user-info{flex:1;min-width:0}
.sb-email{font-size:12px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;color:var(--text)}
.sb-plan{font-size:11px;color:var(--t3)}

/* ══════════════════════════════
   MAIN
══════════════════════════════ */
#main{height:100vh;display:flex;flex-direction:column}

/* ══════════════════════════════
   TOPBAR
══════════════════════════════ */
#topbar{
  height:var(--hh);display:flex;align-items:center;
  padding:0 14px;gap:10px;
  background:var(--bg)cc;
  border-bottom:1px solid var(--border);
  backdrop-filter:blur(20px);
  flex-shrink:0;
  position:relative;z-index:10;
}
.top-btn{
  width:36px;height:36px;display:flex;align-items:center;justify-content:center;
  border-radius:9px;color:var(--t2);transition:.15s;flex-shrink:0;
}
.top-btn:hover{background:var(--bg3);color:var(--text)}

.topbar-mid{flex:1;text-align:center}
.tool-label{font-size:14px;font-weight:500;letter-spacing:-.2px}
.tool-sub{font-size:11px;color:var(--t3)}
.topbar-right{display:flex;align-items:center;gap:8px}

.usage-pill{
  font-size:11.5px;color:var(--t2);
  background:var(--bg2);border:1px solid var(--border);
  border-radius:99px;padding:3px 10px;
}

/* ══════════════════════════════
   WORKSPACE + CHAT AREA
══════════════════════════════ */
#workspace{
  flex:1;display:flex;overflow:hidden;
}
#chat-side{
  flex:1;display:flex;flex-direction:column;
  min-width:0;overflow:hidden;
}
#chat-area{
  flex:1;overflow-y:auto;
  padding:16px 0 8px;
  display:flex;flex-direction:column;
}

#messages{
  width:100%;max-width:740px;
  margin:0 auto;padding:0 16px;
  display:flex;flex-direction:column;
  gap:0;flex:1;
}

/* ── Empty state ── */
.empty-chat{
  flex:1;display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  padding:40px 20px;text-align:center;
  animation:fadeUp .5s ease;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

.empty-logo{
  width:52px;height:52px;margin-bottom:20px;
  filter:drop-shadow(var(--glow1));
  animation:floatLogo 4s ease-in-out infinite;
}
@keyframes floatLogo{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

.empty-title{
  font-size:22px;font-weight:600;letter-spacing:-.5px;
  margin-bottom:8px;
  background:linear-gradient(135deg,var(--text),var(--t2));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.empty-sub{font-size:14px;color:var(--t2);margin-bottom:28px;max-width:400px}
.empty-suggestions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;max-width:520px}
.empty-chip{
  padding:9px 18px;border-radius:99px;
  background:var(--bg2);border:1px solid var(--border2);
  font-size:13px;color:var(--t2);cursor:pointer;
  transition:.2s;
}
.empty-chip:hover{
  border-color:var(--a1);color:var(--text);
  background:linear-gradient(135deg,#c6f13512,#35f1c612);
  box-shadow:var(--glow1);
  transform:translateY(-2px);
}

/* ── Messages ── */
.msg{
  display:flex;gap:12px;padding:10px 0;
  animation:msgIn .3s cubic-bezier(.4,0,.2,1);
}
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.user{flex-direction:row-reverse}

.msg-av{
  width:30px;height:30px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:600;margin-top:2px;
}
.msg-av.ai{
  background:transparent;
  box-shadow:none;
  overflow:visible;
}
.ai-avatar-wrap{
  width:32px;height:32px;flex-shrink:0;margin-top:2px;
  position:relative;
}
.ai-avatar-wrap img,.ai-avatar-wrap svg{
  width:32px;height:32px;
  filter:drop-shadow(0 0 8px #c6f13560);
  animation:avFloat 4s ease-in-out infinite;
}
@keyframes avFloat{
  0%,100%{filter:drop-shadow(0 0 8px #c6f13560)}
  50%{filter:drop-shadow(0 0 18px #35f1c690)}
}
.ai-avatar-wrap.is-typing img,.ai-avatar-wrap.is-typing svg{
  animation:avPulse .5s ease-in-out infinite alternate;
}
@keyframes avPulse{
  from{filter:drop-shadow(0 0 4px #c6f13540)}
  to{filter:drop-shadow(0 0 22px #35f1c6cc);transform:scale(1.08)}
}

.msg-av.me{
  background:var(--bg3);border:1px solid var(--border2);
  color:var(--text);
}

/* ── Typing — music bars ── */
.typing-wrap{display:flex;gap:12px;padding:10px 0;align-items:flex-start}
.typing-bubble{
  display:flex;align-items:center;gap:3px;
  padding:12px 18px;
  background:var(--bg2);border:1px solid var(--border);
  border-radius:18px 18px 18px 4px;
  position:relative;overflow:hidden;
}
.typing-bubble::before{
  content:'';position:absolute;top:0;left:-100%;width:80%;height:100%;
  background:linear-gradient(90deg,transparent,#c6f13510,transparent);
  animation:shimmer 1.8s ease-in-out infinite;
}
@keyframes shimmer{from{left:-100%}to{left:200%}}
.tbar{
  width:3px;border-radius:99px;
  background:linear-gradient(180deg,#c6f135,#35f1c6);
  animation:tBounce 1s ease-in-out infinite;
}
.tbar:nth-child(1){height:10px;animation-delay:0s}
.tbar:nth-child(2){height:18px;animation-delay:.12s}
.tbar:nth-child(3){height:24px;animation-delay:.24s}
.tbar:nth-child(4){height:18px;animation-delay:.36s}
.tbar:nth-child(5){height:10px;animation-delay:.48s}
@keyframes tBounce{
  0%,100%{transform:scaleY(.3);opacity:.3}
  50%{transform:scaleY(1);opacity:1}
}

.msg-body{flex:1;min-width:0}
.msg.user .msg-body{display:flex;justify-content:flex-end}

.msg-bubble{
  font-size:14px;line-height:1.8;
  white-space:pre-wrap;word-break:break-word;
}
.msg.user .msg-bubble{
  background:var(--bg3);
  border:1px solid var(--border2);
  border-radius:18px 18px 4px 18px;
  padding:11px 16px;max-width:78%;
}
.msg.assistant .msg-bubble{padding:2px 0;max-width:100%}

/* Message content formatting */
.msg-bubble h1,.msg-bubble h2,.msg-bubble h3{
  font-weight:600;margin:12px 0 6px;letter-spacing:-.2px;
}
.msg-bubble h1{font-size:18px;background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.msg-bubble h2{font-size:16px}
.msg-bubble h3{font-size:14px;color:var(--a2)}
.msg-bubble code{
  background:var(--bg3);border-radius:5px;
  padding:2px 7px;font-size:12.5px;color:var(--a2);
  border:1px solid var(--border);
}
.msg-bubble pre{
  background:var(--bg2);border:1px solid var(--border2);
  border-radius:12px;padding:16px;
  overflow-x:auto;margin:10px 0;
  position:relative;
}
.msg-bubble pre code{background:none;padding:0;border:none;color:var(--text)}
.msg-bubble strong{font-weight:600;color:var(--text)}
.msg-bubble ul,.msg-bubble ol{padding-left:22px;margin:8px 0}
.msg-bubble li{margin:5px 0;color:var(--t2)}
.msg-bubble li::marker{color:var(--a1)}
.msg-bubble a{color:var(--a2);text-decoration:underline}

/* Media in messages */
.msg-img{max-width:100%;border-radius:12px;display:block;margin-top:8px;border:1px solid var(--border2)}
.msg-audio{width:100%;border-radius:10px;margin-top:8px}
.msg-attached-img{max-width:200px;border-radius:10px;display:block;margin-bottom:8px;border:1px solid var(--border2)}

/* Copy button */
.msg-actions{display:flex;gap:6px;margin-top:6px;opacity:0;transition:.2s}
.msg:hover .msg-actions{opacity:1}
.msg-act-btn{
  font-size:11px;color:var(--t3);
  padding:2px 8px;border-radius:5px;transition:.15s;
  background:var(--bg2);border:1px solid var(--border);
}
.msg-act-btn:hover{color:var(--text);border-color:var(--border2)}

/* Typing indicator */
.typing-wrap{display:flex;gap:12px;padding:10px 0;align-items:flex-start}
.typing-bubble{display:flex;gap:4px;padding:12px 16px;background:var(--bg2);border:1px solid var(--border);border-radius:18px 18px 18px 4px}
.dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--a1);
  animation:dotPop .9s ease-in-out infinite;
}
.dot:nth-child(2){animation-delay:.2s;background:color-mix(in srgb,var(--a1),var(--a2) 50%)}
.dot:nth-child(3){animation-delay:.4s;background:var(--a2)}
@keyframes dotPop{0%,60%,100%{transform:scale(.7);opacity:.4}30%{transform:scale(1);opacity:1}}

/* ══════════════════════════════
   INPUT BAR
══════════════════════════════ */
#input-wrap{
  padding:10px 16px 18px;flex-shrink:0;
  position:relative;
}

/* glowing top edge */
#input-wrap::before{
  content:'';
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:200px;height:1px;
  background:linear-gradient(90deg,transparent,var(--a1),var(--a2),transparent);
  opacity:.3;
}

#input-bar{
  max-width:740px;margin:0 auto;
  background:var(--bg2);
  border:1px solid var(--border2);
  border-radius:18px;
  overflow:hidden;
  transition:.2s;
  position:relative;
}
#input-bar::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,#7c3aed05,#06b6d405);
  opacity:0;transition:.3s;pointer-events:none;
}
#input-bar:focus-within{border-color:var(--border3)}
#input-bar:focus-within::before{opacity:1}

#attach-preview{
  padding:10px 12px 0;display:flex;gap:8px;flex-wrap:wrap;
}
.attach-thumb{
  position:relative;width:64px;height:64px;
  border-radius:10px;overflow:hidden;border:1px solid var(--border2);
}
.attach-thumb img{width:100%;height:100%;object-fit:cover}
.attach-remove{
  position:absolute;top:3px;right:3px;
  background:#000000cc;border-radius:50%;
  width:18px;height:18px;font-size:10px;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;color:#fff;transition:.15s;
}
.attach-remove:hover{background:var(--a1)}

#input-row{
  display:flex;align-items:flex-end;
  padding:10px 12px;gap:8px;
}

.input-btn{
  width:36px;height:36px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  border-radius:9px;color:var(--t2);transition:.2s;
}
.input-btn:hover{background:var(--bg3);color:var(--text)}
.input-btn.recording{
  color:#f87171;
  animation:recPulse 1.2s ease-in-out infinite;
}
@keyframes recPulse{0%,100%{box-shadow:none;background:transparent}50%{box-shadow:0 0 0 6px #f8717120;background:#f8717112}}

#msg-input{
  flex:1;background:none;border:none;outline:none;
  font-size:14px;color:var(--text);
  resize:none;line-height:1.6;
  padding:6px 0;max-height:200px;min-height:24px;
}
#msg-input::placeholder{color:var(--t3)}

.send-btn{
  width:36px;height:36px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;
  border-radius:10px;transition:.2s;
  box-shadow:var(--glow1);
}
.send-btn:hover{transform:scale(1.08);box-shadow:0 0 20px #7c3aed60}
.send-btn:active{transform:scale(.95)}
.send-btn:disabled{opacity:.25;cursor:not-allowed;transform:none;box-shadow:none}

#input-hint{
  text-align:center;font-size:11px;color:var(--t3);
  margin-top:6px;max-width:740px;margin-left:auto;margin-right:auto;
}

/* ══════════════════════════════
   NON-CHAT PAGES
══════════════════════════════ */
.page-wrap{
  flex:1;overflow-y:auto;padding:28px 20px 80px;
  max-width:860px;margin:0 auto;width:100%;
  animation:fadeUp .3s ease;
}
.page-title{
  font-size:20px;font-weight:600;letter-spacing:-.4px;
  margin-bottom:20px;
  background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  display:inline-block;
}

/* Projects */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}
.proj-card{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px;cursor:pointer;
  transition:.2s;text-align:left;position:relative;overflow:hidden;
}
.proj-card::before{
  content:'';position:absolute;inset:0;
  background:var(--grad);opacity:0;transition:.2s;
}
.proj-card:hover{border-color:var(--a1);transform:translateY(-3px);box-shadow:var(--glow1)}
.proj-card:hover::before{opacity:.05}
.proj-tag{font-size:10px;color:var(--a2);text-transform:uppercase;letter-spacing:.5px;margin-bottom:7px;font-weight:500}
.proj-title{font-size:14px;font-weight:500;margin-bottom:4px}
.proj-date{font-size:11px;color:var(--t3);margin-top:10px}

/* PDF */
.upload-zone{
  border:2px dashed var(--border2);border-radius:var(--radius);
  padding:52px 24px;text-align:center;cursor:pointer;
  transition:.2s;margin-bottom:20px;position:relative;overflow:hidden;
}
.upload-zone::before{
  content:'';position:absolute;inset:0;
  background:var(--grad);opacity:0;transition:.2s;
}
.upload-zone:hover,.upload-zone.dragover{border-color:var(--a1);box-shadow:var(--glow1)}
.upload-zone:hover::before,.upload-zone.dragover::before{opacity:.04}
.upload-icon{font-size:36px;margin-bottom:12px;display:block}
.upload-text{font-size:14px;color:var(--t2)}
.upload-text strong{color:var(--text)}
.pdf-list{display:flex;flex-direction:column;gap:8px}
.pdf-item{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:12px;padding:14px;
  display:flex;align-items:center;gap:12px;
  transition:.15s;
}
.pdf-item:hover{border-color:var(--border2)}
.pdf-icon{font-size:22px;flex-shrink:0}
.pdf-info{flex:1;min-width:0}
.pdf-name{font-size:14px;font-weight:500;margin-bottom:2px}
.pdf-sum{font-size:12px;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pdf-btns{display:flex;gap:6px;flex-shrink:0}
.sm-btn{
  font-size:12px;padding:5px 10px;border-radius:7px;
  border:1px solid var(--border);color:var(--t2);transition:.15s;
}
.sm-btn:hover{background:var(--bg3);color:var(--text)}
.sm-btn.del:hover{border-color:#f8717140;color:#f87171}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.p-card{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:16px;padding:24px;position:relative;overflow:hidden;
  transition:.2s;
}
.p-card:hover{transform:translateY(-4px)}
.p-card.pop{border-color:var(--a1);box-shadow:var(--glow1)}
.p-card.pop::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,#7c3aed08,transparent);
}
.p-card.pop::after{
  content:'Popular';position:absolute;top:16px;right:-18px;
  background:var(--grad);color:#fff;font-size:9px;font-weight:700;
  padding:4px 26px;transform:rotate(35deg);letter-spacing:.5px;
}
.p-name{font-size:11px;font-weight:600;color:var(--t2);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.p-price{
  font-size:38px;font-weight:700;letter-spacing:-1.5px;margin-bottom:4px;
  background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.p-price sup{font-size:18px;vertical-align:top;margin-top:8px}
.p-period{font-size:12px;color:var(--t2);margin-bottom:18px}
.p-features{list-style:none;margin-bottom:20px;display:flex;flex-direction:column;gap:8px}
.p-features li{font-size:13px;color:var(--t2);display:flex;align-items:center;gap:8px}
.p-features li::before{content:'✓';color:var(--a2);font-weight:700}
.p-btn{width:100%;padding:11px;border-radius:9px;font-size:13px;font-weight:500;transition:.2s}
.p-btn.primary{background:var(--grad);color:#fff}
.p-btn.primary:hover{opacity:.88;transform:translateY(-1px);box-shadow:var(--glow1)}
.p-btn.outline{border:1px solid var(--border);color:var(--text)}
.p-btn.outline:hover{border-color:var(--a1);background:#7c3aed10}

/* ══════════════════════════════
   TOASTS
══════════════════════════════ */
#toasts{
  position:fixed;bottom:22px;right:18px;
  z-index:9999;display:flex;flex-direction:column;gap:8px;
}
.toast{
  background:var(--bg3);border:1px solid var(--border2);
  border-radius:12px;padding:11px 18px;font-size:13px;
  animation:toastIn .3s cubic-bezier(.4,0,.2,1);
  max-width:280px;backdrop-filter:blur(8px);
}
.toast.success{color:#34d399;border-color:#34d39930}
.toast.error{color:#f87171;border-color:#f8717130}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:none}}

/* ══════════════════════════════
   RESPONSIVE
══════════════════════════════ */
@media(max-width:640px){
  .pricing-grid{grid-template-columns:1fr}
  .projects-grid{grid-template-columns:1fr}
  .msg.user .msg-bubble{max-width:88%}
  #input-wrap{padding:8px 10px 14px}
}

/* ══════════════════════════════
   AI PERSONAS
══════════════════════════════ */
.persona-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px 0}
.persona-btn{
  padding:6px 8px;border-radius:8px;font-size:12px;
  color:var(--t2);border:1px solid var(--border);
  transition:.15s;text-align:left;cursor:pointer;
}
.persona-btn:hover{border-color:var(--a1);color:var(--text)}
.persona-btn.active{
  background:linear-gradient(135deg,#c6f13515,#35f1c615);
  border-color:var(--a1);color:var(--text);
}

/* ══════════════════════════════
   SIDEBAR NAV BTNS
══════════════════════════════ */
.sb-nav-btn{
  display:flex;align-items:center;gap:8px;
  width:100%;padding:7px 8px;border-radius:8px;
  font-size:13px;color:var(--t2);text-align:left;
  transition:.12s;cursor:pointer;
}
.sb-nav-btn:hover{background:var(--bg2);color:var(--text)}
.sb-nav-btn.active{background:var(--bg3);color:var(--text)}

/* ══════════════════════════════
   PROMPT TEMPLATES
══════════════════════════════ */
.templates-row{
  display:flex;gap:6px;flex-wrap:wrap;
  padding:8px 16px 4px;
  max-width:740px;margin:0 auto;
}
.tpl-btn{
  font-size:12px;padding:5px 12px;
  border-radius:99px;
  background:var(--bg2);border:1px solid var(--border);
  color:var(--t2);cursor:pointer;transition:.15s;
  white-space:nowrap;
}
.tpl-btn:hover{border-color:var(--a1);color:var(--text)}

/* ══════════════════════════════
   TONE SLIDER
══════════════════════════════ */
.tone-wrap{
  display:flex;align-items:center;gap:10px;
  padding:4px 16px 8px;
  max-width:740px;margin:0 auto;
  font-size:11px;color:var(--t3);
}
.tone-wrap input[type=range]{
  flex:1;accent-color:var(--a1);
  height:3px;cursor:pointer;
}

/* ══════════════════════════════
   FAVORITES PAGE
══════════════════════════════ */
.favs-list{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.fav-card{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:12px;padding:14px;
  display:flex;gap:12px;align-items:flex-start;
  transition:.15s;
}
.fav-card:hover{border-color:var(--border2)}
.fav-content{flex:1;min-width:0}
.fav-title{font-size:13px;font-weight:500;margin-bottom:4px}
.fav-preview{
  font-size:12px;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
}
.fav-meta{font-size:11px;color:var(--t3);margin-top:6px}
.fav-del{
  font-size:12px;color:var(--t3);padding:4px 8px;
  border-radius:6px;border:1px solid var(--border);
  transition:.15s;flex-shrink:0;
}
.fav-del:hover{color:#f87171;border-color:#f8717140}

/* ══════════════════════════════
   DASHBOARD PAGE
══════════════════════════════ */
.dash-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:20px}
.dash-card{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:12px;padding:18px;text-align:center;
}
.dash-num{
  font-size:30px;font-weight:700;letter-spacing:-1px;
  background:var(--grad);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.dash-lbl{font-size:12px;color:var(--t2);margin-top:4px}

.dash-section{margin-bottom:20px}
.dash-section-title{
  font-size:13px;font-weight:500;color:var(--t2);
  margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px;
}
.top-tool-row{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--bg2);border:1px solid var(--border);
  border-radius:8px;padding:9px 12px;margin-bottom:6px;
}
.top-tool-name{font-size:13px}
.top-tool-count{font-size:12px;color:var(--a1);font-weight:600}

.bar-rows{display:flex;flex-direction:column;gap:6px}
.bar-row{display:flex;align-items:center;gap:10px}
.bar-day{font-size:11px;color:var(--t3);width:32px;text-align:right}
.bar-track{flex:1;height:6px;background:var(--bg3);border-radius:99px;overflow:hidden}
.bar-fill{height:100%;border-radius:99px;background:var(--grad);transition:.4s}

/* ══════════════════════════════
   SAVE TO FAVORITES BTN
══════════════════════════════ */
.msg-act-btn.star{color:var(--t3)}
.msg-act-btn.star:hover{color:var(--a1)}
.msg-act-btn.star.saved{color:var(--a1)}

/* ══════════════════════════════
   LIGHT MODE
══════════════════════════════ */
[data-theme="light"]{
  --bg:         #ffffff;
  --bg2:        #f5f5f7;
  --bg3:        #e8e8ed;
  --bg4:        #dcdce0;
  --sb:         #f0f0f5;
  --border:     #e0e0e8;
  --border2:    #c8c8d8;
  --border3:    #b0b0c8;
  --text:       #1a1a2e;
  --t2:         #5a5a7a;
  --t3:         #9090a8;
  --glow1:      0 0 20px #c6f13540;
  --glow2:      0 0 20px #35f1c640;
}
[data-theme="light"] body::before{
  background-image:
    linear-gradient(#0000000a 1px,transparent 1px),
    linear-gradient(90deg,#0000000a 1px,transparent 1px);
}
[data-theme="light"] #canvas-preview-wrap{background:#f5f5f7}

/* ══════════════════════════════
   CODE BLOCKS — Syntax Highlight
══════════════════════════════ */
.code-block{
  background:var(--sb);border:1px solid var(--border);
  border-radius:12px;margin:10px 0;overflow:hidden;
}
.code-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 14px;border-bottom:1px solid var(--border);
  background:var(--bg3);
}
.code-lang{
  font-size:11px;font-weight:600;color:var(--a1);
  text-transform:uppercase;letter-spacing:.5px;
}
.code-copy{
  font-size:11px;color:var(--t2);padding:3px 8px;
  border-radius:5px;border:1px solid var(--border);
  cursor:pointer;transition:.15s;
}
.code-copy:hover{background:var(--bg2);color:var(--text)}
.code-block pre{
  padding:16px;margin:0;overflow-x:auto;
  font-size:13px;line-height:1.7;
}
.code-block code{
  background:none;border:none;padding:0;
  font-family:'Fira Code','Cascadia Code',monospace;
  font-size:13px;color:var(--text);
}

/* Syntax colors */
.c-keyword{color:#c792ea;font-weight:500}
.c-string{color:#c6f135}
.c-comment{color:var(--t3);font-style:italic}
.c-number{color:#35f1c6}

/* Inline code */
.inline-code{
  background:var(--bg3);border:1px solid var(--border);
  border-radius:4px;padding:2px 6px;
  font-size:12.5px;color:var(--a2);
  font-family:'Fira Code',monospace;
}

/* ══════════════════════════════
   MARKDOWN ELEMENTS
══════════════════════════════ */
.msg-bubble blockquote{
  border-left:3px solid var(--a1);
  padding:8px 14px;margin:8px 0;
  background:var(--bg2);border-radius:0 8px 8px 0;
  color:var(--t2);font-style:italic;
}
.msg-bubble hr{border:none;border-top:1px solid var(--border);margin:12px 0}
.msg-bubble p{margin:6px 0}
.msg-bubble ul,.msg-bubble ol{padding-left:20px;margin:6px 0}
.msg-bubble li{margin:4px 0}

/* Tables */
.md-table{overflow-x:auto;margin:10px 0}
.md-table table{border-collapse:collapse;width:100%;font-size:13px}
.md-table td{
  padding:8px 12px;border:1px solid var(--border);
}
.md-table tr:first-child td{
  background:var(--bg3);font-weight:600;color:var(--text);
}
.md-table tr:hover td{background:var(--bg2)}
.table-divider{display:none}
.style-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px 0}
.style-btn{
  padding:5px 8px;border-radius:7px;font-size:11.5px;
  color:var(--t2);border:1px solid var(--border);
  transition:.15s;text-align:left;cursor:pointer;
}
.style-btn:hover{border-color:var(--a2);color:var(--text)}
.style-btn.active{
  background:linear-gradient(135deg,#35f1c615,#c6f13515);
  border-color:var(--a2);color:var(--text);
}

/* ══════════════════════════════
   THINKING MODE
══════════════════════════════ */
.think-row{display:flex;gap:4px;padding:4px 0}
.think-btn{
  flex:1;padding:6px;border-radius:7px;font-size:12px;
  color:var(--t2);border:1px solid var(--border);
  transition:.15s;cursor:pointer;text-align:center;
}
.think-btn:hover{border-color:var(--a1);color:var(--text)}
.think-btn.active{
  background:linear-gradient(135deg,#c6f13515,#35f1c615);
  border-color:var(--a1);color:var(--text);font-weight:500;
}

/* Deep thinking indicator */
.thinking-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;color:var(--a1);
  background:#c6f13510;border:1px solid #c6f13530;
  border-radius:99px;padding:3px 10px;
  margin-bottom:8px;
  animation:thinkPulse 1.5s ease-in-out infinite;
}
@keyframes thinkPulse{0%,100%{opacity:.6}50%{opacity:1}}

/* LaTeX rendered math */
.katex-display{
  overflow-x:auto;padding:8px 0;
  background:var(--bg3);border-radius:8px;
  padding:12px;margin:8px 0;
}
.katex{color:var(--text)!important;font-size:15px!important}

/* ══════════════════════════════
   CANVAS / ARTIFACTS
══════════════════════════════ */
#workspace{
  flex:1;display:flex;overflow:hidden;
}
#chat-side{
  flex:1;display:flex;flex-direction:column;
  min-width:0;overflow:hidden;
}
#chat-area{
  flex:1;overflow-y:auto;
  padding:16px 0 8px;
  display:flex;flex-direction:column;
}

/* Canvas panel */
#canvas-panel{
  width:50%;flex-shrink:0;
  background:var(--bg2);
  border-left:1px solid var(--border);
  display:flex;flex-direction:column;
  transition:width .3s cubic-bezier(.4,0,.2,1);
  overflow:hidden;
}
#canvas-panel.canvas-hidden{
  width:0;border-left:none;
}
.canvas-header{
  display:flex;align-items:center;gap:8px;
  padding:10px 14px;
  border-bottom:1px solid var(--border);
  flex-shrink:0;
  background:var(--bg);
}
.canvas-title{
  font-size:13px;font-weight:500;
  flex:1;
}
.canvas-tabs{
  display:flex;gap:2px;
  background:var(--bg3);border-radius:7px;padding:2px;
}
.canvas-tab{
  font-size:12px;padding:4px 10px;
  border-radius:5px;color:var(--t2);transition:.15s;
}
.canvas-tab.active{background:var(--bg2);color:var(--text)}
.canvas-tab:hover{color:var(--text)}
.canvas-actions{display:flex;gap:4px}
.canvas-action-btn{
  font-size:12px;padding:4px 8px;
  border-radius:6px;color:var(--t2);
  border:1px solid var(--border);transition:.15s;
}
.canvas-action-btn:hover{background:var(--bg3);color:var(--text)}

#canvas-preview-wrap{
  flex:1;overflow:hidden;
  background:#fff;
}
#canvas-iframe{
  width:100%;height:100%;border:none;
  display:block;
}
#canvas-code-wrap{
  flex:1;overflow:auto;padding:16px;
}
#canvas-code-view{
  font-size:12px;line-height:1.6;
  color:var(--text);white-space:pre-wrap;
  word-break:break-all;
}

/* ── Canvas open button on messages ── */
.canvas-open-btn{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:8px;
  font-size:12px;color:var(--a1);
  padding:5px 12px;border-radius:7px;
  border:1px solid var(--a1)30;
  background:var(--accent-d);
  cursor:pointer;transition:.15s;
}
.canvas-open-btn:hover{background:#c6f13520;border-color:var(--a1)}

@media(max-width:768px){
  #canvas-panel:not(.canvas-hidden){
    position:fixed;inset:0;z-index:70;width:100%!important;
  }
}
.suggestions-row{
  padding:12px 0 4px;
  display:flex;flex-direction:column;gap:6px;
  animation:fadeUp .3s ease;
}
.sugg-label{
  font-size:11px;color:var(--t3);
  text-transform:uppercase;letter-spacing:.5px;
  padding:0 0 4px;
}
.sugg-btn{
  display:block;width:100%;
  text-align:left;
  font-size:13px;color:var(--t2);
  padding:8px 14px;
  background:var(--bg2);
  border:1px solid var(--border);
  border-radius:10px;
  cursor:pointer;transition:.15s;
}
.sugg-btn:hover{
  border-color:var(--a1);
  color:var(--text);
  background:linear-gradient(90deg,#c6f13508,transparent);
  transform:translateX(4px);
}

/* ══════════════════════════════
   CATEGORIES GRID OVERLAY
══════════════════════════════ */
#cat-overlay{
  position:fixed;inset:0;z-index:80;
  background:#00000070;backdrop-filter:blur(4px);
  animation:fadeIn .2s ease;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

#cat-panel{
  position:absolute;
  top:var(--hh);left:0;right:0;
  background:var(--bg);
  border-bottom:1px solid var(--border);
  max-height:80vh;overflow-y:auto;
  animation:slideDown .25s cubic-bezier(.4,0,.2,1);
}
@keyframes slideDown{from{transform:translateY(-20px);opacity:0}to{transform:none;opacity:1}}

.cat-panel-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px 12px;
  border-bottom:1px solid var(--border);
}
.cat-panel-title{
  font-size:15px;font-weight:600;letter-spacing:-.2px;
}
.cat-panel-close{
  width:28px;height:28px;border-radius:7px;
  color:var(--t2);font-size:14px;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:.15s;
}
.cat-panel-close:hover{background:var(--bg2);color:var(--text)}

#cat-panel-body{padding:16px 20px 20px}

/* Categories grid */
.cats-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(150px,1fr));
  gap:10px;
}
.cat-card{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:12px;padding:16px 14px;
  cursor:pointer;text-align:left;
  transition:.2s cubic-bezier(.4,0,.2,1);
  position:relative;overflow:hidden;
}
.cat-card::before{
  content:'';position:absolute;inset:0;
  background:var(--grad);opacity:0;transition:.2s;
}
.cat-card:hover{
  border-color:var(--a1);
  transform:translateY(-3px);
  box-shadow:var(--glow1);
}
.cat-card:hover::before{opacity:.05}
.cat-card-emoji{font-size:24px;margin-bottom:8px;display:block}
.cat-card-name{font-size:13px;font-weight:500;margin-bottom:3px}
.cat-card-count{font-size:11px;color:var(--a1);font-weight:500}

/* Tools grid inside category */
.tools-grid-panel{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(180px,1fr));
  gap:8px;
}
.tool-grid-card{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:10px;padding:14px;
  cursor:pointer;text-align:left;
  transition:.15s;
}
.tool-grid-card:hover{
  border-color:var(--a1);
  background:linear-gradient(135deg,#c6f13508,transparent);
}
.tool-grid-emoji{font-size:18px;margin-bottom:6px;display:block}
.tool-grid-name{font-size:13px;font-weight:500;margin-bottom:2px}

.cat-back-btn{
  display:flex;align-items:center;gap:6px;
  font-size:13px;color:var(--t2);
  margin-bottom:14px;cursor:pointer;
  transition:.15s;width:fit-content;
}
.cat-back-btn:hover{color:var(--text)}

/* Active cat grid btn */
#cat-grid-btn.active{color:var(--a1)}

/* ══════════════════════════════
   AI AGENTS
══════════════════════════════ */
.agents-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:12px;
}
.agent-card{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:14px;padding:18px;
  cursor:pointer;text-align:left;
  transition:.2s;position:relative;overflow:hidden;
}
.agent-card::before{
  content:'';position:absolute;inset:0;
  background:var(--grad);opacity:0;transition:.2s;
}
.agent-card:hover{border-color:var(--a1);transform:translateY(-3px);box-shadow:var(--glow1)}
.agent-card:hover::before{opacity:.05}
.agent-emoji{font-size:28px;margin-bottom:10px;display:block}
.agent-card-name{font-size:14px;font-weight:600;margin-bottom:4px}
.agent-card-desc{font-size:12px;color:var(--t2);margin-bottom:12px}
.agent-run-btn{
  font-size:12px;color:var(--a1);
  background:var(--accent-d);
  border:1px solid #c6f13530;
  border-radius:7px;padding:5px 10px;
  cursor:pointer;transition:.15s;
}
.agent-run-btn:hover{background:#c6f13520}

/* Agent running steps */
.agent-running{padding:4px 0}
.agent-name{font-size:14px;font-weight:500;margin-bottom:10px}
.agent-steps-list{display:flex;flex-direction:column;gap:6px}
.agent-step{
  font-size:13px;color:var(--t2);
  display:flex;align-items:center;gap:8px;
}
.agent-step.running{color:var(--a1);animation:stepPulse 1s ease-in-out infinite}
.agent-step.done{color:var(--a4)}
@keyframes stepPulse{0%,100%{opacity:.6}50%{opacity:1}}

/* ══════════════════════════════
   WORKFLOWS
══════════════════════════════ */
.workflow-builder{
  background:var(--bg2);border:1px solid var(--border);
  border-radius:14px;padding:20px;
}
.wf-step{
  display:flex;align-items:center;gap:8px;
  margin-bottom:6px;
}
.wf-step-num{
  width:24px;height:24px;border-radius:50%;
  background:var(--grad);color:#000;
  font-size:11px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.wf-step-select{
  flex:1;background:var(--bg3);border:1px solid var(--border);
  border-radius:8px;padding:8px 10px;
  font-size:13px;color:var(--text);outline:none;cursor:pointer;
}
.wf-arrow{
  text-align:center;color:var(--a1);font-size:18px;
  margin:4px 0;padding-left:12px;
}