/* Muzzy AI — style.css (v2.4 FINAL)
   ✅ Clean UI/UX
   ✅ Dark/Light modes
   ✅ Responsive
   ✅ Chat bubbles + tools + sources widget
   ✅ In-chat search bar styling
   ✅ Code blocks styling + (optional) highlight.js support
*/

:root{
  --primary:#2B5FA5;
  --accent:#FF6B35;

  --bg:#0A1929;
  --panel:#0F2136;
  --panel2:#112240;

  --text:#E6F1FF;
  --muted:#94A3B8;

  --border:#213A5A;

  --success:#10B981;
  --danger:#EF4444;
  --warn:#F59E0B;

  --shadow: 0 10px 25px rgba(0,0,0,.35);

  --radius:14px;
  --radius2:12px;

  --maxw: 980px;
}

body.light-mode{
  --bg:#F6F8FB;
  --panel:#FFFFFF;
  --panel2:#F1F5F9;
  --text:#0F172A;
  --muted:#64748B;
  --border:#E2E8F0;
  --shadow: 0 10px 25px rgba(2,6,23,.08);
}

*{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;}
body{
  font-family:'Cairo', system-ui, -apple-system, Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height:1.65;
}

/* ---------- Header ---------- */
.header{
  position:fixed;
  top:0; left:0; right:0;
  height:64px;
  background: var(--panel);
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  padding:0 16px;
  gap:12px;
  z-index:1000;
  backdrop-filter: blur(10px);
}

.icon-btn{
  width:42px;height:42px;
  border:none;
  background:transparent;
  color:var(--text);
  border-radius:12px;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  transition: .18s ease;
}
.icon-btn:hover{
  background: color-mix(in srgb, var(--primary) 14%, transparent);
}
.icon-btn.small{ width:38px; height:38px; border-radius:12px; }

.logo-container{
  display:flex;
  align-items:center;
  gap:10px;
  min-width: 140px;
}
.logo-img{
  width:34px; height:34px;
  object-fit:contain;
  filter: drop-shadow(0 6px 12px rgba(0,0,0,.22));
}

/* ✅ New: brand text (title + slogan) */
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.05;
}
.brand-title{
  font-size:1.05rem;
  color: var(--primary);
  font-weight:1000;
  letter-spacing:.2px;
}
.brand-slogan{
  font-size:.78rem;
  color: var(--muted);
  font-weight:1000;
  margin-top:2px;
}

/* Backward compat if h1 exists */
.logo-container h1{
  font-size:1.1rem;
  color: var(--primary);
  letter-spacing:.2px;
}

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-inline-start:auto;
}

.lang-switcher{
  display:flex;
  gap:6px;
  padding:6px;
  border:1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel2) 80%, transparent);
}
.lang-btn{
  border:none;
  cursor:pointer;
  padding:8px 10px;
  border-radius:999px;
  background:transparent;
  color:var(--muted);
  font-weight:900;
  font-size:.85rem;
  transition:.18s ease;
}
.lang-btn.active{
  color: var(--text);
  background: color-mix(in srgb, var(--primary) 22%, transparent);
  border:1px solid color-mix(in srgb, var(--primary) 35%, transparent);
}

/* google translate */
#google_translate_element{ display:inline-block; }
#google_translate_element select{
  max-width:130px;
  border-radius:12px !important;
  border:1px solid var(--border) !important;
  background: var(--panel2) !important;
  color: var(--text) !important;
  padding:8px 10px !important;
  font-weight:900 !important;
  outline:none !important;
}

/* ---------- Sidebar ---------- */
.sidebar{
  position:fixed;
  top:0;
  inset-inline-end:-340px;
  width:340px;
  height:100vh;
  background: var(--panel);
  border-inline-start:1px solid var(--border);
  z-index:1200;
  display:flex;
  flex-direction:column;
  transition: inset-inline-end .28s ease;
}
.sidebar.active{ inset-inline-end:0; }

.sidebar-header{
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  border-bottom:1px solid var(--border);
}
.sidebar-header h2{
  font-size:1rem;
  color: var(--text);
}

.sidebar-actions{
  padding:14px 16px;
  display:flex;
  flex-direction:column;
  gap:10px;
  border-bottom:1px solid var(--border);
}

.sidebar-btn{
  display:flex;
  align-items:center;
  gap:10px;
  width:100%;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  cursor:pointer;
  font-weight:900;
  transition:.18s ease;
}
.sidebar-btn:hover{
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.sidebar-btn.primary{
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}
.sidebar-btn.danger{
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border));
}

.sidebar-search{
  padding:14px 16px;
  border-bottom:1px solid var(--border);
}
.sidebar-search input{
  width:100%;
  border:1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding:12px 12px;
  border-radius:14px;
  outline:none;
  font-weight:900;
}
.sidebar-search input:focus{
  border-color: color-mix(in srgb, var(--primary) 55%, var(--border));
}

.sidebar-content{
  padding: 10px 10px 20px;
  overflow:auto;
}
.history-item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid transparent;
  cursor:pointer;
  transition:.18s ease;
}
.history-item:hover{
  background: color-mix(in srgb, var(--panel2) 80%, transparent);
}
.history-item.active{
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  background: color-mix(in srgb, var(--primary) 12%, transparent);
}
.history-item-content{
  display:flex;
  flex-direction:column;
  gap:4px;
  overflow:hidden;
}
.history-item-text{
  font-weight:900;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  max-width: 220px;
}
.history-item-date{
  color: var(--muted);
  font-size:.78rem;
  font-weight:900;
}
.history-item-delete{
  border:none;
  background:transparent;
  color: color-mix(in srgb, var(--danger) 80%, var(--muted));
  cursor:pointer;
  padding:8px;
  border-radius:12px;
}
.history-item-delete:hover{
  background: color-mix(in srgb, var(--danger) 14%, transparent);
}

/* ---------- Backdrop ---------- */
.backdrop{
  position:fixed;
  inset:0;
  background: rgba(0,0,0,.55);
  z-index:1100;
  display:none;
}
.backdrop.active{ display:block; }

/* ---------- Main layout ---------- */
.main-content{
  margin-top:64px;
  min-height: calc(100vh - 64px);
  display:flex;
  flex-direction:column;
}

/* Welcome */
.welcome-screen{
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  padding: 48px 16px 120px;
  text-align:center;
}
.welcome-content{
  width:100%;
  max-width: var(--maxw);
  padding: 0 6px;
}
.welcome-logo{
  width:92px;
  height:92px;
  object-fit:contain;
  margin-bottom:18px;
  filter: drop-shadow(0 10px 18px rgba(0,0,0,.25));
}
.welcome-title{
  font-size:2rem;
  color: var(--text);
  font-weight:1000;
  margin-bottom:6px;
}
.welcome-subtitle{
  color: var(--muted);
  font-weight:900;
  margin-bottom:18px;
}

/* quick prompts */
.quick-prompts{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:14px;
  max-width: 720px;
  margin: 14px auto 0;
}
.prompt-card{
  min-height:96px;
  padding:18px 14px;
  border-radius:18px;
  background: var(--panel);
  border:1px solid var(--border);
  cursor:pointer;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:10px;
  transition:.18s ease;
}
.prompt-card:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
}
.prompt-card i{
  font-size:1.6rem;
  color: var(--accent);
}
.prompt-card span{
  color: var(--text);
  font-weight:1000;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient: vertical;
  overflow:hidden;
}

/* Footer links */
.footer-links{
  position:fixed;
  bottom:0; left:0; right:0;
  background: var(--panel);
  border-top:1px solid var(--border);
  padding:14px 10px;
  display:flex;
  justify-content:center;
  gap:18px;
  z-index:1000;
}
.footer-links a{
  color: var(--muted);
  text-decoration:none;
  font-weight:1000;
}
.footer-links a:hover{ color: var(--text); }

/* inline footer variant (inside chat input) */
.footer-links-inline{
  position:static;
  border-top:none;
  background: transparent;
  padding:10px 0 0;
  gap:12px;
  z-index:auto;
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
}
.footer-links-inline a{
  font-size:.9rem;
}

/* ---------- Chat container ---------- */
.chat-container{
  width:100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 10px;
  display:flex;
  flex-direction:column;
  height: calc(100vh - 64px);
}

/* Optional topbar */
.chat-topbar{
  width:100%;
  padding: 10px 6px 0;
}

/* In-chat search (if enabled) */
.chat-search{
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px;
  border:1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--panel2) 75%, transparent);
}
.chat-search.hidden{ display:none; }

#chat-search-input{
  flex:1;
  border:1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding:10px 12px;
  border-radius: 14px;
  outline:none;
  font-weight:900;
}
#chat-search-input:focus{
  border-color: color-mix(in srgb, var(--primary) 55%, var(--border));
}
.chat-search-count{
  color: var(--muted);
  font-weight:1000;
  font-size:.85rem;
  min-width:52px;
  text-align:center;
}

/* Messages area */
.messages{
  flex:1;
  overflow:auto;
  padding: 14px 6px 140px;
  scroll-behavior: smooth;
}

/* Bubbles */
.message{
  display:flex;
  flex-direction:column;
  margin: 0 0 14px;
}

.message-content{
  border:1px solid var(--border);
  background: var(--panel);
  border-radius: 18px;
  padding: 14px 14px;
  font-weight:900;
  color: var(--text);
  word-break: break-word;
}

/* User bubble */
.message.user{
  align-items:flex-end;
}
.message.user .message-content{
  background: color-mix(in srgb, var(--primary) 16%, var(--panel));
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
}

/* Assistant bubble */
.message.assistant{
  align-items:flex-start;
}
.message.assistant .message-content{
  background: var(--panel);
}

/* Message tools */
.message-tools{
  display:flex;
  gap:8px;
  margin-top:8px;
  flex-wrap:wrap;
}
.tool-btn{
  border:1px solid var(--border);
  background: color-mix(in srgb, var(--panel2) 85%, transparent);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 14px;
  cursor:pointer;
  font-weight:1000;
  display:flex;
  align-items:center;
  gap:8px;
  transition:.16s ease;
}
.tool-btn:hover{
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
}
.user-del-btn:hover{
  border-color: color-mix(in srgb, var(--danger) 55%, var(--border));
  background: color-mix(in srgb, var(--danger) 10%, var(--panel2));
}

/* Sources widget */
.sources-widget{
  margin-top:10px;
  border:1px solid var(--border);
  border-radius: 16px;
  overflow:hidden;
  background: color-mix(in srgb, var(--panel2) 70%, transparent);
}
.sources-header{
  padding:12px 12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  cursor:pointer;
  font-weight:1000;
}
.sources-header-left{
  display:flex;
  align-items:center;
  gap:10px;
}
.sources-list{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease, padding .28s ease;
  padding: 0 12px;
}
.sources-list.expanded{
  max-height: 420px;
  padding: 12px;
}
.source-chip{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 14px;
  border:1px solid var(--border);
  background: var(--panel);
  margin-bottom:10px;
}
.source-chip:hover{
  border-color: color-mix(in srgb, var(--primary) 45%, var(--border));
  box-shadow: var(--shadow);
}
.source-number{
  width:26px;height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius: 10px;
  background: color-mix(in srgb, var(--primary) 18%, transparent);
  border:1px solid color-mix(in srgb, var(--primary) 35%, var(--border));
  font-weight:1000;
}
.source-title{
  flex:1;
  font-weight:1000;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* Code blocks */
pre{
  background: color-mix(in srgb, #000 35%, var(--panel2));
  border: 1px solid color-mix(in srgb, var(--border) 60%, #000);
  border-radius: 16px;
  padding: 14px;
  overflow:auto;
  margin: 10px 0;
}
code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: .92rem;
}
pre code{
  display:block;
  color: #E5E7EB;
  white-space: pre;
}

/* Inline code */
.message-content code{
  background: color-mix(in srgb, var(--panel2) 85%, transparent);
  border:1px solid var(--border);
  padding: 2px 6px;
  border-radius: 10px;
}

/* Input area */
.input-container{
  position:sticky;
  bottom: 72px; /* ✅ fix: فوق footer حتى لو لفّ */
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border-top: 1px solid var(--border);
  padding: 12px 10px;
  backdrop-filter: blur(10px);
  border-radius: 18px;
  margin: 10px 0 0;
}

.status-indicator{
  min-height: 22px;
  margin-bottom: 8px;
  color: var(--muted);
  font-weight:1000;
}

.input-wrapper{
  display:flex;
  gap:10px;
  align-items:flex-end;
}
#user-input{
  flex:1;
  border:1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  padding: 12px 12px;
  border-radius: 16px;
  font-size:1rem;
  font-weight:900;
  resize:none;
  max-height: 220px;
  outline:none;
}
#user-input:focus{
  border-color: color-mix(in srgb, var(--primary) 55%, var(--border));
}

.send-btn{
  width:48px;
  height:48px;
  border:none;
  border-radius: 16px;
  cursor:pointer;
  background: var(--primary);
  color:white;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:.16s ease;
}
.send-btn:hover{
  background: color-mix(in srgb, var(--primary) 70%, var(--accent));
  transform: translateY(-1px);
}
.send-btn:disabled{
  opacity:.6;
  cursor:not-allowed;
  transform:none;
}

/* Floating buttons */
.floating-btn{
  position:fixed;
  inset-inline-end: 16px;
  width:48px;height:48px;
  border-radius: 16px;
  border:1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 85%, transparent);
  color: var(--text);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  opacity:0;
  pointer-events:none;
  transition: .18s ease;
  z-index:900;
}
.floating-btn.visible{
  opacity:1;
  pointer-events:auto;
}
.scroll-top{ bottom: 170px; }
.scroll-bottom{ bottom: 110px; }

/* Toast */
.toast{
  position: fixed;
  top: 76px;
  inset-inline-end: 16px;
  background: var(--panel);
  border:1px solid var(--border);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  font-weight:1000;
  z-index:2000;
}
.toast.success{ border-color: color-mix(in srgb, var(--success) 55%, var(--border)); }
.toast.error{ border-color: color-mix(in srgb, var(--danger) 55%, var(--border)); }
.toast.info{ border-color: color-mix(in srgb, var(--primary) 55%, var(--border)); }

/* Responsive */
@media (max-width: 820px){
  .sidebar{ width: 300px; inset-inline-end:-300px; }
  .quick-prompts{ grid-template-columns: 1fr; max-width: 520px; }
  .welcome-title{ font-size:1.6rem; }
  .chat-container{ padding:0 8px; }
  .messages{ padding: 12px 2px 140px; }
  .footer-links{
    flex-wrap:wrap;
    gap:12px;
    padding:12px 10px;
  }

  /* hide big title if exists; keep slogan style */
  .logo-container h1{ display:none; }
  .brand-title{ display:none; }
}

/* Scrollbar */
::-webkit-scrollbar{ width: 10px; }
::-webkit-scrollbar-track{ background: color-mix(in srgb, var(--panel2) 70%, transparent); }
::-webkit-scrollbar-thumb{
  background: color-mix(in srgb, var(--border) 75%, transparent);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover{
  background: color-mix(in srgb, var(--primary) 35%, var(--border));
}