/* ============================================================
   AI Hub 2026 - Premium Arabic AI Platform
   ============================================================ */
:root {
  --bg-primary: #0a0a1a;
  --bg-secondary: #111128;
  --bg-tertiary: #1a1a3e;
  --bg-card: #16163a;
  --bg-hover: #1e1e4a;
  --bg-input: #12122e;
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0c0;
  --text-muted: #6a6a90;
  --border-color: #2a2a5a;
  --border-light: #1e1e4e;
  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --accent-dark: #5b21b6;
  --accent-glow: rgba(124,58,237,0.3);
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  --gradient-1: linear-gradient(135deg,#7c3aed 0%,#3b82f6 50%,#06b6d4 100%);
  --gradient-2: linear-gradient(135deg,#ec4899 0%,#8b5cf6 100%);
  --gradient-3: linear-gradient(135deg,#f59e0b 0%,#ef4444 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px var(--accent-glow);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --sidebar-width: 280px;
  --header-height: 60px;
  --font-ar: 'Tajawal','Segoe UI',sans-serif;
  --font-mono: 'JetBrains Mono','Fira Code',monospace;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}
[data-theme="light"] {
  --bg-primary: #f8f9fc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f0f1f5;
  --bg-card: #ffffff;
  --bg-hover: #eef0f5;
  --bg-input: #f5f6fa;
  --text-primary: #1a1a2e;
  --text-secondary: #555580;
  --text-muted: #888898;
  --border-color: #dddde8;
  --border-light: #eeeef5;
  --accent-glow: rgba(124,58,237,0.15);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 20px rgba(124,58,237,0.12);
}
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; scroll-behavior:smooth; }
body {
  font-family: var(--font-ar);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow: hidden;
  height: 100vh;
  -webkit-font-smoothing: antialiased;
}
/* Layout */
.app-layout { display:flex; height:100vh; overflow:hidden; }
/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  z-index: 100;
  flex-shrink: 0;
}
.sidebar.collapsed { width:0; overflow:hidden; border:none; }
.sidebar-header {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border-light);
}
.sidebar-logo {
  font-size: 1.25rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.sidebar-logo-icon { font-size:1.5rem; }
.new-chat-btn {
  width: calc(100% - 24px);
  padding: 10px 14px;
  margin: 10px 12px;
  background: var(--gradient-1);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-ar);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}
.new-chat-btn:hover { transform:translateY(-1px); box-shadow:var(--shadow-glow); }
/* Nav */
.sidebar-nav { padding:6px 8px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.88rem;
  font-weight: 500;
}
.nav-item:hover { background:var(--bg-hover); color:var(--text-primary); }
.nav-item.active { background:var(--accent-glow); color:var(--accent-light); }
.nav-item i { width:20px; text-align:center; font-size:0.95rem; }
.nav-divider { height:1px; background:var(--border-light); margin:6px 12px; }
/* Chat History */
.chat-history { flex:1; overflow-y:auto; padding:6px 8px; }
.chat-history-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  padding: 8px 12px 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.chat-history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.83rem;
  position: relative;
}
.chat-history-item:hover { background:var(--bg-hover); color:var(--text-primary); }
.chat-history-item .delete-chat {
  display:none; position:absolute; left:6px; color:var(--error); cursor:pointer; padding:4px;
}
.chat-history-item:hover .delete-chat { display:block; }
/* Sidebar Footer */
.sidebar-footer { padding:10px 14px; border-top:1px solid var(--border-light); }
.theme-toggle { display:flex; align-items:center; justify-content:space-between; padding:6px 0; cursor:pointer; }
.theme-toggle-label { font-size:0.83rem; color:var(--text-secondary); display:flex; align-items:center; gap:8px; }
.toggle-switch {
  width:42px; height:22px; background:var(--bg-tertiary); border-radius:11px;
  position:relative; cursor:pointer; transition:var(--transition); border:1px solid var(--border-color);
}
.toggle-switch.active { background:var(--accent); }
.toggle-switch::after {
  content:''; position:absolute; width:16px; height:16px; background:white;
  border-radius:50%; top:2px; right:3px; transition:var(--transition);
}
.toggle-switch.active::after { right:22px; }
/* Main Content */
.main-content { flex:1; display:flex; flex-direction:column; overflow:hidden; min-width:0; }
.main-header {
  height: var(--header-height);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-secondary);
  flex-shrink: 0;
}
.header-right { display:flex; align-items:center; gap:10px; }
.menu-toggle {
  width:38px; height:38px; display:flex; align-items:center; justify-content:center;
  border-radius:var(--radius-sm); border:none; background:transparent;
  color:var(--text-secondary); cursor:pointer; font-size:1.15rem; transition:var(--transition);
}
.menu-toggle:hover { background:var(--bg-hover); color:var(--text-primary); }
.model-selector {
  display:flex; align-items:center; gap:8px; padding:5px 12px;
  background:var(--bg-tertiary); border:1px solid var(--border-color);
  border-radius:var(--radius-md); cursor:pointer; transition:var(--transition); max-width:280px;
}
.model-selector:hover { border-color:var(--accent); background:var(--bg-hover); }
.model-selector-name { font-size:0.83rem; font-weight:600; color:var(--text-primary); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.model-selector-badge { font-size:0.6rem; font-weight:700; padding:2px 6px; border-radius:4px; background:var(--gradient-1); color:white; }
.header-left { display:flex; align-items:center; gap:8px; }
/* Chat Area */
.chat-area { flex:1; overflow-y:auto; padding:16px; scroll-behavior:smooth; }
.chat-welcome {
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  height:100%; text-align:center; padding:30px;
}
.welcome-icon { font-size:3.5rem; margin-bottom:16px; animation:float 3s ease-in-out infinite; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
.welcome-title {
  font-size:1.8rem; font-weight:800; margin-bottom:10px;
  background:var(--gradient-1); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.welcome-subtitle { font-size:1rem; color:var(--text-secondary); margin-bottom:28px; max-width:480px; }
.welcome-features { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:14px; max-width:650px; width:100%; }
.welcome-feature {
  padding:18px; background:var(--bg-card); border:1px solid var(--border-color);
  border-radius:var(--radius-md); text-align:center; transition:var(--transition); cursor:pointer;
}
.welcome-feature:hover { border-color:var(--accent); transform:translateY(-2px); box-shadow:var(--shadow-glow); }
.welcome-feature-icon { font-size:1.8rem; margin-bottom:6px; }
.welcome-feature-title { font-size:0.9rem; font-weight:700; margin-bottom:3px; }
.welcome-feature-desc { font-size:0.78rem; color:var(--text-muted); }
/* Messages */
.message { display:flex; gap:10px; margin-bottom:20px; max-width:850px; margin-left:auto; margin-right:auto; animation:msgIn 0.3s ease-out; }
@keyframes msgIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }
.message.user { flex-direction:row-reverse; }
.message-avatar {
  width:34px; height:34px; border-radius:var(--radius-sm); display:flex;
  align-items:center; justify-content:center; font-size:0.95rem; flex-shrink:0;
}
.message.user .message-avatar { background:var(--gradient-2); color:white; }
.message.assistant .message-avatar { background:var(--gradient-1); color:white; }
.message-content { flex:1; min-width:0; }
.message.user .message-content { text-align:left; }
.message-bubble {
  display:inline-block; padding:10px 16px; border-radius:var(--radius-md);
  max-width:100%; word-wrap:break-word; overflow-wrap:break-word; line-height:1.75;
}
.message.user .message-bubble { background:var(--accent); color:white; border-radius:var(--radius-md) var(--radius-md) 4px var(--radius-md); }
.message.assistant .message-bubble { background:var(--bg-card); border:1px solid var(--border-color); border-radius:var(--radius-md) var(--radius-md) var(--radius-md) 4px; }
.message-bubble p { margin-bottom:8px; }
.message-bubble p:last-child { margin-bottom:0; }
.message-bubble code { background:rgba(0,0,0,0.2); padding:2px 6px; border-radius:4px; font-family:var(--font-mono); font-size:0.85em; }
.message-bubble pre { background:#0d0d1a; padding:14px; border-radius:var(--radius-sm); overflow-x:auto; margin:8px 0; direction:ltr; text-align:left; }
.message-bubble pre code { background:transparent; padding:0; font-size:0.83rem; color:#e0e0ff; }
[data-theme="light"] .message-bubble pre { background:#f0f0f5; }
[data-theme="light"] .message-bubble pre code { color:#333; }
.message-bubble ul,.message-bubble ol { padding-right:20px; margin:6px 0; }
.message-bubble li { margin-bottom:3px; }
.message-bubble h1,.message-bubble h2,.message-bubble h3 { margin:12px 0 6px; font-weight:700; }
.message-bubble h1 { font-size:1.2rem; }
.message-bubble h2 { font-size:1.1rem; }
.message-bubble h3 { font-size:1rem; }
.message-actions { display:flex; gap:6px; margin-top:5px; opacity:0; transition:var(--transition); }
.message:hover .message-actions { opacity:1; }
.msg-action-btn {
  padding:3px 8px; font-size:0.73rem; color:var(--text-muted); background:transparent;
  border:none; cursor:pointer; border-radius:4px; font-family:var(--font-ar); transition:var(--transition);
}
.msg-action-btn:hover { color:var(--accent-light); background:var(--bg-hover); }
/* Typing */
.typing-indicator { display:flex; gap:4px; padding:6px 0; }
.typing-dot { width:7px; height:7px; background:var(--accent); border-radius:50%; animation:typingBounce 1.4s infinite ease-in-out both; }
.typing-dot:nth-child(1) { animation-delay:-0.32s; }
.typing-dot:nth-child(2) { animation-delay:-0.16s; }
@keyframes typingBounce { 0%,80%,100%{transform:scale(0.6);opacity:0.4} 40%{transform:scale(1);opacity:1} }
/* Input Area */
.input-area { padding:12px 16px 16px; background:var(--bg-secondary); border-top:1px solid var(--border-light); flex-shrink:0; }
.input-container { max-width:850px; margin:0 auto; position:relative; }
.input-wrapper {
  display:flex; align-items:flex-end; gap:8px; background:var(--bg-input);
  border:2px solid var(--border-color); border-radius:var(--radius-lg); padding:8px 14px; transition:var(--transition);
}
.input-wrapper:focus-within { border-color:var(--accent); box-shadow:var(--shadow-glow); }
.chat-textarea {
  flex:1; background:transparent; border:none; outline:none; color:var(--text-primary);
  font-family:var(--font-ar); font-size:0.93rem; resize:none; min-height:22px; max-height:200px; line-height:1.5; direction:rtl;
}
.chat-textarea::placeholder { color:var(--text-muted); }
.send-btn {
  width:40px; height:40px; border-radius:var(--radius-md); border:none; background:var(--gradient-1);
  color:white; cursor:pointer; display:flex; align-items:center; justify-content:center; font-size:1rem; transition:var(--transition); flex-shrink:0;
}
.send-btn:hover { transform:scale(1.05); box-shadow:var(--shadow-glow); }
.send-btn:disabled { opacity:0.5; cursor:not-allowed; transform:none; }
.input-hint { text-align:center; font-size:0.7rem; color:var(--text-muted); margin-top:6px; }
/* Modal */
.modal-overlay {
  position:fixed; top:0; left:0; right:0; bottom:0; background:rgba(0,0,0,0.6);
  backdrop-filter:blur(8px); z-index:500; display:flex; align-items:center; justify-content:center;
  padding:16px; animation:fadeIn 0.2s ease-out;
}
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
.modal {
  background:var(--bg-secondary); border:1px solid var(--border-color); border-radius:var(--radius-xl);
  width:100%; max-width:680px; max-height:80vh; display:flex; flex-direction:column;
  box-shadow:var(--shadow-lg); animation:modalIn 0.3s ease-out;
}
@keyframes modalIn { from{opacity:0;transform:scale(0.95) translateY(20px)} to{opacity:1;transform:scale(1) translateY(0)} }
.modal-header { padding:18px 22px; border-bottom:1px solid var(--border-light); display:flex; align-items:center; justify-content:space-between; }
.modal-title { font-size:1.1rem; font-weight:700; }
.modal-close {
  width:34px; height:34px; display:flex; align-items:center; justify-content:center;
  border-radius:var(--radius-sm); border:none; background:transparent; color:var(--text-secondary);
  cursor:pointer; font-size:1.1rem; transition:var(--transition);
}
.modal-close:hover { background:var(--bg-hover); color:var(--error); }
.modal-search { padding:0 22px; margin-top:14px; }
.modal-search input {
  width:100%; padding:9px 14px; background:var(--bg-input); border:1px solid var(--border-color);
  border-radius:var(--radius-md); color:var(--text-primary); font-family:var(--font-ar); font-size:0.88rem; outline:none; transition:var(--transition);
}
.modal-search input:focus { border-color:var(--accent); }
.modal-filters { display:flex; gap:5px; padding:10px 22px; overflow-x:auto; flex-wrap:nowrap; }
.filter-chip {
  padding:4px 12px; border-radius:18px; border:1px solid var(--border-color); background:transparent;
  color:var(--text-secondary); font-family:var(--font-ar); font-size:0.78rem; cursor:pointer; white-space:nowrap; transition:var(--transition);
}
.filter-chip:hover { border-color:var(--accent); color:var(--accent-light); }
.filter-chip.active { background:var(--accent); color:white; border-color:var(--accent); }
.modal-body { flex:1; overflow-y:auto; padding:10px 22px 22px; }
.model-item {
  display:flex; align-items:center; gap:10px; padding:10px 12px; border-radius:var(--radius-md);
  cursor:pointer; transition:var(--transition); border:1px solid transparent;
}
.model-item:hover { background:var(--bg-hover); border-color:var(--border-color); }
.model-item.selected { background:var(--accent-glow); border-color:var(--accent); }
.model-icon {
  width:38px; height:38px; border-radius:var(--radius-sm); background:var(--bg-tertiary);
  display:flex; align-items:center; justify-content:center; font-size:1.1rem; flex-shrink:0;
}
.model-info { flex:1; min-width:0; }
.model-name { font-size:0.88rem; font-weight:600; display:flex; align-items:center; gap:5px; flex-wrap:wrap; }
.model-badge { font-size:0.58rem; font-weight:700; padding:1px 5px; border-radius:3px; background:var(--gradient-1); color:white; }
.model-badge.think { background:linear-gradient(135deg,#f59e0b,#ef4444); }
.model-badge.code { background:linear-gradient(135deg,#06b6d4,#3b82f6); }
.model-badge.vision { background:linear-gradient(135deg,#10b981,#06b6d4); }
.model-badge.new { background:linear-gradient(135deg,#ec4899,#8b5cf6); }
.model-badge.reason { background:linear-gradient(135deg,#f97316,#f59e0b); }
.model-badge.huge { background:linear-gradient(135deg,#ef4444,#dc2626); }
.model-badge.nvidia { background:linear-gradient(135deg,#84cc16,#22c55e); }
.model-desc { font-size:0.76rem; color:var(--text-muted); margin-top:1px; }
.model-provider { font-size:0.68rem; color:var(--text-muted); text-align:left; white-space:nowrap; }
/* Image Page */
.image-page { flex:1; overflow-y:auto; padding:20px; }
.image-page-inner { max-width:850px; margin:0 auto; }
.page-title {
  font-size:1.6rem; font-weight:800; margin-bottom:6px;
  background:var(--gradient-1); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.page-desc { color:var(--text-secondary); margin-bottom:20px; font-size:0.95rem; }
.image-form { background:var(--bg-card); border:1px solid var(--border-color); border-radius:var(--radius-lg); padding:22px; margin-bottom:20px; }
.form-group { margin-bottom:14px; }
.form-label { display:block; font-size:0.88rem; font-weight:600; margin-bottom:6px; color:var(--text-primary); }
.form-input,.form-select,.form-textarea {
  width:100%; padding:9px 12px; background:var(--bg-input); border:1px solid var(--border-color);
  border-radius:var(--radius-md); color:var(--text-primary); font-family:var(--font-ar); font-size:0.88rem; outline:none; transition:var(--transition);
}
.form-input:focus,.form-select:focus,.form-textarea:focus { border-color:var(--accent); }
.form-textarea { min-height:90px; resize:vertical; }
.form-select { cursor:pointer; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.generate-btn {
  width:100%; padding:12px; background:var(--gradient-1); color:white; border:none;
  border-radius:var(--radius-md); font-family:var(--font-ar); font-size:0.95rem; font-weight:700;
  cursor:pointer; transition:var(--transition); display:flex; align-items:center; justify-content:center; gap:8px;
}
.generate-btn:hover { transform:translateY(-2px); box-shadow:var(--shadow-glow); }
.generate-btn:disabled { opacity:0.6; cursor:not-allowed; transform:none; }
.image-result { background:var(--bg-card); border:1px solid var(--border-color); border-radius:var(--radius-lg); overflow:hidden; }
.image-result img { width:100%; display:block; }
.image-result-actions { padding:14px; display:flex; gap:8px; }
.image-action-btn {
  padding:7px 14px; border-radius:var(--radius-sm); border:1px solid var(--border-color);
  background:var(--bg-tertiary); color:var(--text-primary); font-family:var(--font-ar); font-size:0.83rem;
  cursor:pointer; display:flex; align-items:center; gap:5px; transition:var(--transition);
}
.image-action-btn:hover { border-color:var(--accent); background:var(--bg-hover); }
/* Prompts Page */
.prompts-page,.translate-page,.pricing-page { flex:1; overflow-y:auto; padding:20px; }
.prompts-page-inner,.translate-page-inner,.pricing-page-inner { max-width:950px; margin:0 auto; }
.prompts-filters { display:flex; gap:6px; margin-bottom:18px; flex-wrap:wrap; }
.prompts-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:14px; }
.prompt-card {
  background:var(--bg-card); border:1px solid var(--border-color); border-radius:var(--radius-md);
  padding:18px; cursor:pointer; transition:var(--transition); position:relative; overflow:hidden;
}
.prompt-card::before { content:''; position:absolute; top:0; right:0; width:4px; height:100%; background:var(--card-accent,var(--accent)); }
.prompt-card:hover { border-color:var(--accent); transform:translateY(-3px); box-shadow:var(--shadow-md); }
.prompt-card-icon { font-size:1.8rem; margin-bottom:8px; }
.prompt-card-title { font-size:0.95rem; font-weight:700; margin-bottom:4px; }
.prompt-card-desc { font-size:0.8rem; color:var(--text-muted); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.prompt-card-category { display:inline-block; margin-top:8px; padding:2px 9px; border-radius:10px; font-size:0.68rem; font-weight:600; background:var(--bg-tertiary); color:var(--text-secondary); }
/* Pricing */
.pricing-page-inner { text-align:center; }
.pricing-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:20px; text-align:right; }
.pricing-card {
  background:var(--bg-card); border:1px solid var(--border-color); border-radius:var(--radius-lg);
  padding:28px 22px; transition:var(--transition); position:relative;
}
.pricing-card.featured { border-color:var(--accent); box-shadow:var(--shadow-glow); }
.pricing-card.featured::before {
  content:'الأكثر شعبية'; position:absolute; top:-11px; left:50%; transform:translateX(-50%);
  background:var(--gradient-1); color:white; padding:3px 14px; border-radius:10px; font-size:0.72rem; font-weight:700;
}
.pricing-plan-name { font-size:1.2rem; font-weight:800; margin-bottom:4px; }
.pricing-price { font-size:2.2rem; font-weight:900; color:var(--accent-light); margin:10px 0; }
.pricing-price span { font-size:0.9rem; font-weight:400; color:var(--text-muted); }
.pricing-features { list-style:none; margin:16px 0; }
.pricing-features li { padding:5px 0; font-size:0.88rem; color:var(--text-secondary); display:flex; align-items:center; gap:7px; }
.pricing-features li i { color:var(--success); font-size:0.83rem; }
.pricing-btn {
  width:100%; padding:11px; border-radius:var(--radius-md); border:2px solid var(--accent);
  background:transparent; color:var(--accent-light); font-family:var(--font-ar); font-size:0.95rem;
  font-weight:700; cursor:pointer; transition:var(--transition);
}
.pricing-btn:hover { background:var(--accent); color:white; }
.pricing-card.featured .pricing-btn { background:var(--gradient-1); color:white; border:none; }
/* Translate */
.translate-boxes { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:16px; }
.translate-box { background:var(--bg-card); border:1px solid var(--border-color); border-radius:var(--radius-md); padding:14px; }
.translate-box-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:8px; }
.translate-box textarea {
  width:100%; min-height:180px; background:transparent; border:none; outline:none;
  color:var(--text-primary); font-family:var(--font-ar); font-size:0.95rem; resize:vertical;
}
/* Spinner */
.spinner { width:22px; height:22px; border:3px solid var(--border-color); border-top-color:var(--accent); border-radius:50%; animation:spin 0.8s linear infinite; }
@keyframes spin { to{transform:rotate(360deg)} }
/* Scrollbar */
::-webkit-scrollbar { width:5px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--border-color); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--text-muted); }
/* Toast */
.toast-container { position:fixed; top:16px; left:50%; transform:translateX(-50%); z-index:9999; display:flex; flex-direction:column; gap:6px; }
.toast {
  padding:10px 18px; border-radius:var(--radius-md); background:var(--bg-card); border:1px solid var(--border-color);
  color:var(--text-primary); font-family:var(--font-ar); font-size:0.88rem; box-shadow:var(--shadow-md);
  animation:toastIn 0.3s ease-out; display:flex; align-items:center; gap:8px;
}
.toast.success { border-color:var(--success); }
.toast.error { border-color:var(--error); }
.toast.warning { border-color:var(--warning); }
@keyframes toastIn { from{opacity:0;transform:translateY(-16px)} to{opacity:1;transform:translateY(0)} }
/* Mobile Overlay */
.mobile-overlay { position:fixed; top:0; left:0; right:0; bottom:0; background:rgba(0,0,0,0.5); z-index:150; }
/* Responsive */
@media (max-width:768px) {
  .sidebar { position:fixed; top:0; right:0; bottom:0; z-index:200; box-shadow:var(--shadow-lg); }
  .sidebar.collapsed { right:calc(-1 * var(--sidebar-width)); width:var(--sidebar-width); }
  .welcome-features { grid-template-columns:1fr; }
  .form-row,.translate-boxes,.pricing-grid { grid-template-columns:1fr; }
  .model-selector-name { max-width:130px; }
  .chat-area { padding:10px; }
  .prompts-grid { grid-template-columns:1fr; }
  .page-title,.welcome-title { font-size:1.4rem; }
}
/* Animations */
.slide-up { animation:slideUp 0.4s ease-out; }
@keyframes slideUp { from{opacity:0;transform:translateY(24px)} to{opacity:1;transform:translateY(0)} }
/* Stats bar */
.stats-bar { display:flex; gap:14px; margin-bottom:20px; flex-wrap:wrap; }
.stat-card {
  flex:1; min-width:120px; padding:14px 16px; background:var(--bg-card);
  border:1px solid var(--border-color); border-radius:var(--radius-md); text-align:center;
}
.stat-number { font-size:1.5rem; font-weight:800; background:var(--gradient-1); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:0.75rem; color:var(--text-muted); margin-top:2px; }