:root {
  --primary: #00a651;
  --primary-dark: #006837;
  --primary-light: #22c55e;
  --primary-gradient: linear-gradient(135deg, #00a651, #22c55e);
  --secondary: #3399ff;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #0ea5e9;
  --background: #000000;
  --background-secondary: #111111;
  --background-tertiary: #1a1a1a;
  --background-card: #1e1e1e;
  --background-elevated: #2a2a2a;
  --text: #ffffff;
  --text-muted: #cccccc;
  --text-light: #e5e5e5;
  --text-secondary: #b3b3b3;
  --border: #333333;
  --border-light: #404040;
  --border-lighter: #555555;
  --shadow: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.4);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.5);
  --shadow-primary: 0 8px 25px rgba(0,166,81,0.3);
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --transition: 0.3s ease;
  --glass-bg: rgba(26,26,26,0.9);
  --glass-border: rgba(255,255,255,0.1);
  --glass-backdrop: blur(20px);
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }

body {
  font-family:'Cairo','Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  background:linear-gradient(135deg,var(--background) 0%,var(--background-secondary) 50%,var(--background) 100%);
  color:var(--text);
  line-height:1.6;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body::before {
  content:'';
  position:fixed; top:0; left:0; width:100%; height:100%;
  background:
    radial-gradient(circle at 20% 20%,rgba(0,166,81,0.1) 0%,transparent 50%),
    radial-gradient(circle at 80% 80%,rgba(51,153,255,0.1) 0%,transparent 50%);
  z-index:-1;
  animation:backgroundFloat 20s ease-in-out infinite;
}

@keyframes backgroundFloat {
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-20px)}
}

@keyframes fadeIn {
  from{opacity:0;transform:translate(-50%,10px)}
  to{opacity:1;transform:translate(-50%,0)}
}

@keyframes fadeInUp {
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}

@keyframes pulse-dot {
  0%,100%{opacity:0.4}50%{opacity:1}
}

@keyframes glow {
  0%,100%{box-shadow:0 0 5px rgba(0,166,81,0.3)}
  50%{box-shadow:0 0 20px rgba(0,166,81,0.5)}
}

@keyframes recording-pulse {
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(1.1);opacity:0.8}
}

.animate-fadeIn{animation:fadeInUp 0.3s ease-out}

.toast {
  position:fixed; bottom:20px; left:50%; transform:translateX(-50%);
  padding:1rem 1.5rem; border-radius:var(--border-radius);
  background:var(--background-card); color:var(--text);
  box-shadow:var(--shadow-xl); z-index:9999;
  animation:fadeIn 0.3s ease-out; border:1px solid var(--primary);
  max-width:400px;
}

.chat-sidebar{background:var(--background-secondary);border-color:var(--border)}
.chat-header{background:var(--background-secondary);border-color:var(--border)}
.chat-main{background:var(--background)}
.chat-messages{background:var(--background)}
.chat-input-area{background:var(--background-secondary);border-color:var(--border)}

.text-main{color:var(--text)}
.text-sub{color:var(--text-muted)}
.border-main{border-color:var(--border)}
.bg-elevated{background:var(--background-elevated)}

.glass-card {
  background:var(--glass-bg);
  backdrop-filter:var(--glass-backdrop);
  border:1px solid var(--glass-border);
  border-radius:var(--border-radius-lg);
  box-shadow:var(--shadow-xl);
}

.input-field {
  width:100%; padding:0.75rem 1rem;
  border:2px solid var(--border-light);
  border-radius:var(--border-radius);
  font-size:1rem;
  background:rgba(255,255,255,0.05);
  color:var(--text);
  transition:all var(--transition);
  font-family:inherit;
}

.input-field:focus {
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(0,166,81,0.2);
  background:rgba(255,255,255,0.1);
}

.input-field::placeholder{color:var(--text-secondary)}

.btn-primary {
  background:var(--primary-gradient); color:white; border:none;
  padding:0.75rem 1.5rem; border-radius:var(--border-radius);
  font-weight:600; cursor:pointer; transition:all var(--transition);
  font-family:inherit; display:inline-flex; align-items:center;
  justify-content:center; gap:0.5rem; font-size:1rem;
}

.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-primary)}

.message-bubble {
  max-width:75%; padding:10px 14px; border-radius:18px;
  animation:fadeInUp 0.2s ease-out; word-wrap:break-word; line-height:1.5;
}

.message-bubble-sent {
  background:var(--primary-gradient); color:white;
  border-bottom-right-radius:4px; margin-left:auto;
  box-shadow:0 2px 8px rgba(0,166,81,0.3);
}

.message-bubble-received {
  background:var(--background-card); color:var(--text);
  border-bottom-left-radius:4px; border:1px solid var(--glass-border);
}

html[dir="rtl"] .message-bubble-sent{border-bottom-right-radius:18px;border-bottom-left-radius:4px}
html[dir="rtl"] .message-bubble-received{border-bottom-left-radius:18px;border-bottom-right-radius:4px}

.typing-dots span {
  display:inline-block; width:6px; height:6px; border-radius:50%;
  background-color:var(--primary); margin:0 1px; animation:pulse-dot 1.4s infinite;
}
.typing-dots span:nth-child(2){animation-delay:0.2s}
.typing-dots span:nth-child(3){animation-delay:0.4s}

.room-item {
  transition:all var(--transition); cursor:pointer; border-left:3px solid transparent;
}
.room-item:hover{background:rgba(0,166,81,0.08);border-left-color:var(--primary)}
html[dir="rtl"] .room-item{border-left:none;border-right:3px solid transparent}
html[dir="rtl"] .room-item:hover{border-right-color:var(--primary)}

.voice-recording{animation:glow 1s infinite;color:var(--danger)!important}

.recording-indicator {
  display:flex;align-items:center;gap:8px;padding:8px 14px;
  background:rgba(239,68,68,0.1);border:1px solid rgba(239,68,68,0.3);
  border-radius:var(--border-radius);animation:recording-pulse 1.5s infinite;
}

.recording-indicator .rec-dot {
  width:10px;height:10px;border-radius:50%;background:#ef4444;
  animation:pulse-dot 1s infinite;
}

.show-original-btn {
  font-size:11px; color:var(--text-muted); cursor:pointer;
  margin-top:4px; display:inline-block; transition:color var(--transition);
  background:none; border:none; padding:2px 4px; font-family:inherit;
}
.show-original-btn:hover{color:var(--primary)}

.expired-badge {
  background:rgba(239,68,68,0.15); color:var(--danger);
  font-size:10px; padding:2px 6px; border-radius:4px; font-weight:600;
}

.download-btn {
  display:inline-flex; align-items:center; gap:4px;
  padding:4px 8px; border-radius:6px; font-size:11px;
  background:rgba(0,166,81,0.15); color:var(--primary);
  border:1px solid rgba(0,166,81,0.3); cursor:pointer;
  transition:all var(--transition); text-decoration:none;
}
.download-btn:hover{background:rgba(0,166,81,0.3);transform:translateY(-1px)}

.ok-btn {
  padding:0.5rem 1rem; border-radius:8px; font-size:12px;
  background:rgba(51,153,255,0.15); color:var(--secondary);
  border:1px solid rgba(51,153,255,0.3); cursor:pointer;
  transition:all var(--transition); font-weight:600; font-family:inherit;
  white-space:nowrap;
}
.ok-btn:hover{background:rgba(51,153,255,0.3)}

.audio-player {
  display:flex;align-items:center;gap:8px;padding:8px;
  background:rgba(0,0,0,0.2);border-radius:10px;min-width:200px;
}
.audio-player audio{width:100%;height:32px}

::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--primary)}

#messageInput{overflow-y:hidden}

/* Light Theme */
html[data-theme="light"] {
  --background:#f8fafc;--background-secondary:#f1f5f9;--background-tertiary:#e2e8f0;
  --background-card:#ffffff;--background-elevated:#ffffff;
  --text:#1e293b;--text-muted:#64748b;--text-light:#475569;--text-secondary:#94a3b8;
  --border:#e2e8f0;--border-light:#cbd5e1;--border-lighter:#94a3b8;
  --glass-bg:rgba(255,255,255,0.9);--glass-border:rgba(0,0,0,0.08);
  --shadow:0 4px 20px rgba(0,0,0,0.08);--shadow-lg:0 10px 30px rgba(0,0,0,0.1);
  --shadow-xl:0 20px 50px rgba(0,0,0,0.12);
}
html[data-theme="light"] body{background:var(--background)}
html[data-theme="light"] body::before{background:radial-gradient(circle at 20% 20%,rgba(0,166,81,0.04) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(51,153,255,0.04) 0%,transparent 50%)}
html[data-theme="light"] .toast{background:#1e293b;color:white;border-color:var(--primary)}
html[data-theme="light"] .input-field{background:white;border-color:var(--border);color:var(--text)}
html[data-theme="light"] .input-field:focus{background:white}
html[data-theme="light"] .message-bubble-received{background:#f1f5f9;color:#1e293b;border:1px solid #e2e8f0}
html[data-theme="light"] .text-white{color:var(--text)}
html[data-theme="light"] .text-gray-300{color:#475569}
html[data-theme="light"] .text-gray-400{color:#64748b}
html[data-theme="light"] .text-gray-500{color:#64748b}
html[data-theme="light"] .text-gray-700{color:#94a3b8}
html[data-theme="light"] .border-gray-600{border-color:#cbd5e1}
html[data-theme="light"] .border-gray-700{border-color:#e2e8f0}
html[data-theme="light"] .border-gray-800{border-color:#e2e8f0}
html[data-theme="light"] .bg-gray-800{background:#f1f5f9}
html[data-theme="light"] .hover\:bg-gray-800:hover{background:#e2e8f0}
html[data-theme="light"] .bg-black\/30{background:rgba(241,245,249,0.8)}
html[data-theme="light"] .bg-black\/50{background:rgba(241,245,249,0.9)}
html[data-theme="light"] .bg-black\/70{background:rgba(0,0,0,0.4)}
html[data-theme="light"] .font-bold.text-white,html[data-theme="light"] .font-medium.text-white{color:#1e293b}
html[data-theme="light"] .text-green-400{color:#059669}
html[data-theme="light"] .hover\:text-green-400:hover{color:#059669}
html[data-theme="light"] .text-blue-400{color:#2563eb}
html[data-theme="light"] .text-amber-400{color:#d97706}
html[data-theme="light"] .text-red-400{color:#dc2626}
html[data-theme="light"] .hover\:text-red-400:hover{color:#dc2626}

/* Dropdown / Select styling */
select.input-field{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:2.5rem;
}
select.input-field option{background:var(--background-card);color:var(--text);padding:8px}
html[data-theme="light"] select.input-field{background-color:#fff;color:#1e293b}
html[data-theme="light"] select.input-field option{background:#fff;color:#1e293b}

/* Voice preview bar */
.voice-preview-bar{
  display:flex;align-items:center;gap:8px;padding:8px 14px;
  background:rgba(0,166,81,0.1);border:1px solid rgba(0,166,81,0.3);
  border-radius:var(--border-radius);animation:fadeInUp 0.2s ease-out;
}
.voice-preview-bar audio{flex:1;height:32px}

@media(max-width:768px){
  .message-bubble{max-width:85%}
}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:0.01ms!important;transition-duration:0.01ms!important}
}