*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0a;
  --surface:#111111;
  --surface2:#171717;
  --surface3:#1d1d1d;
  --border:#2a2a2a;
  --border2:#333333;
  --text:#f0f0f0;
  --text-dim:#9a9a9a;
  --text-dimmer:#555555;
  --white:#ffffff;
  --danger:#ffb1b1;
}
html,body{height:100%}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'DM Mono',monospace;
  font-size:14px;
  line-height:1.6;
  overflow:hidden;
}
.hidden{display:none!important}

#landing{
  position:fixed;
  inset:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  background:var(--bg);
  z-index:100;
  transition:opacity .5s ease,transform .5s ease;
}
#landing.hide{
  opacity:0;
  transform:translateY(-24px);
  pointer-events:none;
}
.landing-title{
  font-family:'Bebas Neue',sans-serif;
  font-size:clamp(3rem,8vw,7rem);
  letter-spacing:.04em;
  color:var(--white);
  text-align:center;
  line-height:1;
  margin-bottom:2.5rem;
}
.start-btn{
  border:1.5px solid var(--white);
  background:transparent;
  color:var(--white);
  font-family:'DM Mono',monospace;
  font-size:.85rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  padding:14px 44px;
  cursor:pointer;
  position:relative;
  overflow:hidden;
  transition:color .3s ease,border-color .3s ease;
}
.start-btn::before{
  content:'';
  position:absolute;
  inset:0;
  background:var(--white);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s ease;
  z-index:0;
}
.start-btn:hover::before{transform:scaleX(1)}
.start-btn:hover{color:var(--bg)}
.start-btn span{position:relative;z-index:1}

#app{
  position:fixed;
  inset:0;
  display:flex;
  opacity:0;
  pointer-events:none;
  transition:opacity .35s ease;
}
#app.show{
  opacity:1;
  pointer-events:all;
}

#noticeScreen,#infoPage{
  position:fixed;
  inset:0;
  display:none;
  align-items:center;
  justify-content:center;
  background:var(--bg);
  z-index:110;
  padding:24px;
  overflow-y:auto;
  overflow-x:hidden;
}
#noticeScreen.show,#infoPage.show{display:flex}
.page-card{
  width:min(960px,100%);
  border:1px solid var(--border2);
  background:var(--surface);
  padding:30px;
  margin:auto;
}
.page-title{
  font-family:'Bebas Neue',sans-serif;
  font-size:clamp(2rem,5vw,3.4rem);
  letter-spacing:.05em;
  color:var(--white);
  margin-bottom:16px;
}
.page-content{
  color:var(--text);
  font-size:.92rem;
  line-height:1.9;
}
.page-content p{margin-bottom:1em}
.page-content h2{
  font-family:'Playfair Display',serif;
  font-size:1.2rem;
  color:var(--white);
  margin:1.2em 0 .45em;
}
.page-content ul{padding-left:1.25rem;margin-bottom:.85em}
.page-content li{margin-bottom:.45em;color:var(--text)}
.page-actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:24px;
}
.page-btn{
  height:46px;
  padding:0 20px;
  border:1px solid var(--border2);
  background:transparent;
  color:var(--text);
  font-family:'DM Mono',monospace;
  font-size:.78rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .2s,color .2s,background .2s;
}
.page-btn:hover{border-color:var(--white);color:var(--white)}
.page-btn.primary{
  background:var(--white);
  border-color:var(--white);
  color:var(--bg);
}
.page-btn.primary:hover{
  background:#dcdcdc;
  border-color:#dcdcdc;
}

.sidebar{
  width:290px;
  flex-shrink:0;
  border-right:1px solid var(--border);
  background:var(--surface);
  display:flex;
  flex-direction:column;
}
.sidebar-top{
  padding:18px 16px 14px;
  border-bottom:1px solid var(--border);
}
.sidebar-label{
  font-size:.72rem;
  color:var(--text-dim);
  text-transform:uppercase;
  letter-spacing:.12em;
  margin-bottom:12px;
}
.sidebar-actions{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:8px;
}
.sidebar-btn{
  height:40px;
  border:1px solid var(--border2);
  background:transparent;
  color:var(--text);
  font-family:'DM Mono',monospace;
  font-size:.75rem;
  letter-spacing:.06em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .2s,color .2s,background .2s;
}
.sidebar-btn:hover{border-color:var(--white);color:var(--white)}
.sidebar-btn.primary{
  background:var(--white);
  border-color:var(--white);
  color:var(--bg);
}
.sidebar-btn.primary:hover{
  background:#dcdcdc;
  border-color:#dcdcdc;
}
.sidebar-btn.danger{
  grid-column:1/-1;
  border-color:#4a1f1f;
  color:var(--danger);
}
.sidebar-btn.danger:hover{
  border-color:#ff7d7d;
  color:#fff;
  background:#220d0d;
}
.chats-list{
  flex:1;
  overflow-y:auto;
  padding:8px;
}
.chats-list::-webkit-scrollbar{width:4px}
.chats-list::-webkit-scrollbar-thumb{background:var(--border2)}
.chat-item{
  width:100%;
  border:1px solid transparent;
  background:transparent;
  color:var(--text);
  transition:background .2s,border-color .2s;
  display:flex;
  align-items:stretch;
  margin-bottom:6px;
}
.chat-item:hover{background:var(--surface2);border-color:var(--border)}
.chat-item.active{background:var(--surface2);border-color:var(--border2)}
.chat-main{
  flex:1;
  min-width:0;
  padding:12px;
  cursor:pointer;
}
.chat-title{
  font-size:.82rem;
  color:var(--white);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  margin-bottom:5px;
}
.chat-time{
  font-size:.68rem;
  color:var(--text-dimmer);
  letter-spacing:.04em;
}
.chat-delete-btn{
  width:44px;
  flex-shrink:0;
  border:none;
  border-left:1px solid var(--border);
  background:transparent;
  color:var(--text-dimmer);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:color .2s,background .2s;
}
.chat-delete-btn:hover{
  color:#fff;
  background:#220d0d;
}
.sidebar-bottom{
  border-top:1px solid var(--border);
  padding:12px 14px;
  color:var(--text-dimmer);
  font-size:.7rem;
  min-height:44px;
  display:flex;
  align-items:center;
}

.main{
  flex:1;
  min-width:0;
  display:flex;
  flex-direction:column;
}
header{
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  height:56px;
  border-bottom:1px solid var(--border);
  background:var(--bg);
  position:relative;
}
.logo{
  font-family:'Bebas Neue',sans-serif;
  font-size:1.6rem;
  letter-spacing:.08em;
  color:var(--white);
}
.header-nav{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  display:flex;
  align-items:center;
  gap:8px;
}
.header-nav-left{left:56px}
.header-nav-right{right:12px}
.header-side-btn{
  height:34px;
  padding:0 14px;
  border:1px solid var(--border);
  background:transparent;
  color:var(--text-dim);
  font-family:'DM Mono',monospace;
  font-size:.68rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .2s,color .2s,background .2s;
  white-space:nowrap;
}
.header-side-btn:hover{border-color:var(--white);color:var(--white)}

.mobile-chats-btn{
  display:none;
  position:absolute;
  left:12px;
  top:50%;
  transform:translateY(-50%);
  width:36px;
  height:36px;
  background:transparent;
  border:1px solid var(--border);
  color:var(--text);
  cursor:pointer;
}

#messages{
  flex:1;
  overflow-y:auto;
  padding:32px 0;
  scroll-behavior:smooth;
}
#messages::-webkit-scrollbar{width:4px}
#messages::-webkit-scrollbar-track{background:transparent}
#messages::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px}

.msg-wrap{
  max-width:820px;
  margin:0 auto;
  padding:0 24px 28px;
  animation:fadeUp .3s ease;
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:translateY(0)}
}
.msg-row{display:flex;gap:12px;align-items:flex-start}
.msg-avatar{
  width:30px;
  height:30px;
  flex-shrink:0;
  border:1px solid var(--border2);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:'Bebas Neue',sans-serif;
  font-size:.75rem;
  letter-spacing:.05em;
  color:var(--text-dim);
  margin-top:2px;
}
.msg-content{flex:1;min-width:0}
.msg-name{
  font-size:.7rem;
  color:var(--text-dimmer);
  letter-spacing:.1em;
  text-transform:uppercase;
  margin-bottom:6px;
}
.msg-body{
  color:var(--text);
  line-height:1.75;
  word-break:break-word;
}
.msg-body p{margin-bottom:.75em}
.msg-body p:last-child{margin-bottom:0}
.msg-body strong{font-weight:700;color:var(--white)}
.msg-body em{font-style:italic}
.msg-body h1,.msg-body h2,.msg-body h3,.msg-body h4{
  font-family:'Playfair Display',serif;
  color:var(--white);
  margin:1em 0 .4em;
  line-height:1.2;
}
.msg-body h1{font-size:1.5rem}
.msg-body h2{font-size:1.25rem}
.msg-body h3{font-size:1.1rem}
.msg-body h4{font-size:1rem}
.msg-body ul,.msg-body ol{padding-left:1.4em;margin-bottom:.75em}
.msg-body li{margin-bottom:.3em}
.msg-body a{color:var(--white);text-decoration:underline;text-underline-offset:3px}
.msg-body hr{border:none;border-top:1px solid var(--border2);margin:1em 0}
.msg-body blockquote{
  border-left:2px solid var(--border2);
  padding-left:1em;
  color:var(--text-dim);
  margin:.75em 0;
}
.user-msg .msg-body{color:#d0d0d0}

.code-block{
  background:var(--surface);
  border:1px solid var(--border);
  margin:.75em 0;
  overflow:hidden;
}
.code-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:7px 14px;
  border-bottom:1px solid var(--border);
  background:var(--surface2);
}
.code-lang{
  font-size:.7rem;
  color:var(--text-dim);
  letter-spacing:.08em;
  text-transform:uppercase;
}
.copy-code-btn{
  background:none;
  border:1px solid var(--border2);
  color:var(--text-dim);
  font-family:'DM Mono',monospace;
  font-size:.7rem;
  padding:3px 10px;
  cursor:pointer;
  letter-spacing:.06em;
  transition:border-color .2s,color .2s;
}
.copy-code-btn:hover{border-color:var(--white);color:var(--white)}
.code-block pre{
  padding:16px 14px;
  overflow-x:auto;
  font-family:'DM Mono',monospace;
  font-size:.82rem;
  line-height:1.65;
  color:#d4d4d4;
  white-space:pre;
}
.inline-code{
  background:var(--surface2);
  border:1px solid var(--border);
  font-family:'DM Mono',monospace;
  font-size:.85em;
  padding:1px 5px;
  color:#d4d4d4;
}

.msg-footer{
  display:flex;
  align-items:center;
  gap:14px;
  margin-top:10px;
  flex-wrap:wrap;
}
.msg-action-btn{
  background:none;
  border:none;
  cursor:pointer;
  color:var(--text-dimmer);
  font-family:'DM Mono',monospace;
  font-size:.7rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  padding:0;
  display:flex;
  align-items:center;
  gap:5px;
  transition:color .2s;
}
.msg-action-btn:hover{color:var(--text-dim)}
.msg-action-btn svg{width:12px;height:12px}

.msg-editor{
  margin-top:10px;
  border:1px solid var(--border);
  background:var(--surface);
  padding:10px;
}
.msg-editor textarea{
  width:100%;
  min-height:110px;
  resize:vertical;
  background:var(--surface2);
  border:1px solid var(--border2);
  color:var(--text);
  font-family:'DM Mono',monospace;
  font-size:.82rem;
  line-height:1.6;
  padding:10px 12px;
  outline:none;
}
.msg-editor-row{
  display:flex;
  gap:8px;
  margin-top:10px;
  flex-wrap:wrap;
}
.msg-editor-btn{
  height:36px;
  padding:0 14px;
  border:1px solid var(--border2);
  background:transparent;
  color:var(--text);
  font-family:'DM Mono',monospace;
  font-size:.74rem;
  cursor:pointer;
  transition:border-color .2s,color .2s,background .2s;
}
.msg-editor-btn:hover{border-color:var(--white);color:var(--white)}
.msg-editor-btn.primary{
  background:var(--white);
  color:var(--bg);
  border-color:var(--white);
}
.msg-editor-btn.primary:hover{
  background:#dcdcdc;
  border-color:#dcdcdc;
}

.img-preview-msg{
  max-width:240px;
  max-height:200px;
  border:1px solid var(--border);
  object-fit:cover;
  margin-bottom:8px;
  display:block;
}
.generated-image{
  max-width:100%;
  border:1px solid var(--border);
  display:block;
}

.typing-indicator{
  display:flex;
  gap:5px;
  align-items:center;
  padding:4px 0;
}
.typing-dot{
  width:5px;
  height:5px;
  background:var(--text-dimmer);
  border-radius:50%;
  animation:typingBounce 1.2s infinite;
}
.typing-dot:nth-child(2){animation-delay:.2s}
.typing-dot:nth-child(3){animation-delay:.4s}
@keyframes typingBounce{
  0%,60%,100%{transform:translateY(0)}
  30%{transform:translateY(-5px)}
}

.input-area{
  flex-shrink:0;
  border-top:1px solid var(--border);
  background:var(--bg);
  padding:16px 24px 20px;
}
.input-inner{max-width:820px;margin:0 auto}
.attached-img-preview{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:10px;
  padding:8px 12px;
  background:var(--surface);
  border:1px solid var(--border);
}
.attached-img-preview img{
  width:48px;
  height:48px;
  object-fit:cover;
  border:1px solid var(--border2);
}
.attached-img-preview span{
  flex:1;
  font-size:.75rem;
  color:var(--text-dim);
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
}
.remove-img-btn{
  background:none;
  border:none;
  color:var(--text-dimmer);
  cursor:pointer;
  font-size:1.2rem;
  padding:0 4px;
  transition:color .2s;
  line-height:1;
}
.remove-img-btn:hover{color:var(--white)}

.input-row{
  display:flex;
  align-items:flex-end;
  gap:10px;
  position:relative;
}
textarea#chatInput{
  flex:1;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--text);
  font-family:'DM Mono',monospace;
  font-size:.85rem;
  padding:12px 14px;
  resize:none;
  min-height:46px;
  max-height:180px;
  outline:none;
  line-height:1.5;
  transition:border-color .2s;
  overflow-y:auto;
}
textarea#chatInput::placeholder{color:var(--text-dimmer)}
textarea#chatInput:focus{border-color:var(--border2)}

.icon-btn{
  width:46px;
  height:46px;
  flex-shrink:0;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--text-dim);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:border-color .2s,color .2s,background .2s;
}
.icon-btn:hover{border-color:var(--white);color:var(--white)}
.icon-btn svg{width:18px;height:18px}
.send-btn{
  background:var(--white);
  border-color:var(--white);
  color:var(--bg);
}
.send-btn:hover{
  background:var(--text-dim);
  border-color:var(--text-dim);
  color:var(--bg);
}
.send-btn:disabled,.model-btn:disabled,.ai-type-btn:disabled{
  background:var(--surface2);
  border-color:var(--border);
  color:var(--text-dimmer);
  cursor:not-allowed;
}

.ai-type-wrap,.model-wrap{
  position:relative;
  flex-shrink:0;
}
.ai-type-btn,.model-btn{
  min-width:172px;
  height:46px;
  padding:0 14px;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--text);
  font-family:'DM Mono',monospace;
  font-size:.75rem;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  transition:border-color .2s,color .2s,background .2s;
}
.ai-type-btn:hover,.model-btn:hover{border-color:var(--white);color:var(--white)}

.ai-type-menu,.model-menu{
  position:absolute;
  bottom:56px;
  width:240px;
  background:var(--surface);
  border:1px solid var(--border2);
  display:none;
  z-index:50;
  box-shadow:0 12px 30px rgba(0,0,0,.35);
}
.ai-type-menu.show,.model-menu.show{display:block}
.ai-type-menu{left:0}
.model-menu{right:0}
.ai-type-option,.model-option{
  width:100%;
  background:transparent;
  border:none;
  border-bottom:1px solid var(--border);
  color:var(--text);
  text-align:left;
  padding:12px 14px;
  cursor:pointer;
  font-family:'DM Mono',monospace;
  transition:background .2s,color .2s;
}
.ai-type-option:last-child,.model-option:last-child{border-bottom:none}
.ai-type-option:hover,.model-option:hover{background:var(--surface2);color:var(--white)}
.ai-type-option.active,.model-option.active{background:var(--surface2)}
.ai-type-option-title,.model-option-title{
  font-size:.78rem;
  color:var(--white);
  margin-bottom:4px;
}
.ai-type-option-sub,.model-option-sub{
  font-size:.68rem;
  color:var(--text-dim);
  line-height:1.5;
}

.empty-state{
  max-width:820px;
  margin:0 auto;
  padding:40px 24px;
  color:var(--text-dim);
}
.empty-state h2{
  font-family:'Bebas Neue',sans-serif;
  font-size:2rem;
  letter-spacing:.05em;
  color:var(--white);
  margin-bottom:8px;
}
.empty-state p{max-width:520px}

.token-note{
  margin-top:10px;
  display:flex;
  justify-content:space-between;
  gap:12px;
  color:var(--text-dimmer);
  font-size:.68rem;
  letter-spacing:.06em;
  text-transform:uppercase;
}

#fileInput{display:none}

@media (max-width:1150px){
  .header-nav-left{left:48px}
  .header-side-btn{padding:0 10px;font-size:.62rem}
}

@media (max-width:980px){
  .sidebar{
    position:fixed;
    left:0;
    top:0;
    bottom:0;
    z-index:20;
    transform:translateX(-100%);
    transition:transform .25s ease;
  }
  .sidebar.show{transform:translateX(0)}
  .mobile-chats-btn{
    display:flex;
    align-items:center;
    justify-content:center;
  }
  .header-nav{display:none}
}

@media (max-width:680px){
  #noticeScreen,#infoPage{padding:12px}
  .page-card{padding:18px}
  .input-row{flex-wrap:wrap}
  .ai-type-wrap,.model-wrap{width:100%}
  .ai-type-btn,.model-btn{width:100%}
  .ai-type-menu,.model-menu{left:0;right:auto;width:100%}
  .token-note{
    flex-direction:column;
    align-items:flex-start;
  }
}

.download-buttons{
  display:flex;
  gap:12px;
  margin-top:18px;
  flex-wrap:wrap;
  justify-content:center;
}

.download-btn{
  min-width:220px;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 18px;
  border:1px solid rgba(255,255,255,0.14);
  background:rgba(255,255,255,0.05);
  color:#ffffff;
  border-radius:16px;
  font-family:"DM Mono", monospace;
  font-size:14px;
  transition:transform .18s ease, background .18s ease, border-color .18s ease;
  backdrop-filter:blur(10px);
}

.download-btn:hover{
  transform:translateY(-2px);
  background:rgba(255,255,255,0.09);
  border-color:rgba(255,255,255,0.24);
}

.download-btn:active{
  transform:translateY(0);
}

@media (max-width: 640px){
  .download-buttons{
    flex-direction:column;
    width:100%;
    align-items:center;
  }

  .download-btn{
    width:min(100%, 320px);
  }
}