/* ===== CSS Variables ===== */
:root {
  --bg: #070b18;
  --bg-gradient:
    radial-gradient(1200px 800px at 20% 10%, rgba(56,189,248,.25), transparent 55%),
    radial-gradient(1000px 700px at 80% 20%, rgba(236,72,153,.22), transparent 60%),
    radial-gradient(900px 600px at 50% 85%, rgba(168,85,247,.18), transparent 65%);
  --panel: rgba(10, 15, 40, 0.75);
  --card: rgba(12, 18, 45, 0.65);
  --text: #eef2ff;
  --muted: #9aa4d6;
  --accent: #38bdf8;          /* sky blue */
  --accent-2: #ec4899;        /* pink */
  --accent-3: #a855f7;    
  --accent-glow: rgba(56,189,248,.35);
  --ok: #22d3ee;
  --bad: #fb7185;
  --bubble-user: rgba(30, 40, 90, 0.75);
  --bubble-bot: rgba(16, 22, 55, 0.65);
  --border: rgba(255,255,255,.08);
  --border-glow: rgba(56,189,248,.35);
  --shadow: 0 30px 80px rgba(0,0,0,.6);
  --shadow-sm: 0 12px 35px rgba(0,0,0,.35);
  --radius: 18px;
  --radius-sm: 12px;
  --blur: 16px;
  --sans: 'Inter', 'Plus Jakarta Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.light {
  --bg: #f0f4ff;
  --bg-gradient: radial-gradient(1400px 900px at 30% 15%, rgba(99,102,241,.15), transparent 60%),
                 radial-gradient(1200px 800px at 70% 25%, rgba(34,197,94,.12), transparent 65%),
                 radial-gradient(1000px 700px at 50% 80%, rgba(168,85,247,.1), transparent 70%);
  --panel: rgba(255, 255, 255, 0.85);
  --card: rgba(255, 255, 255, 0.75);
  --text: #0b1020;
  --muted: #4b5563;
  --bubble-user: rgba(233, 239, 255, 0.85);
  --bubble-bot: rgba(255, 255, 255, 0.75);
  --border: rgba(0,0,0,.08);
  --border-glow: rgba(99,102,241,.2);
  --shadow: 0 25px 70px rgba(15,23,42,.2);
  --shadow-sm: 0 10px 30px rgba(15,23,42,.12);
  --blur: 20px;
}

body::before {
  content: "";
  position: fixed;
  inset: -20%;
  background: linear-gradient(
    120deg,
    rgba(56,189,248,.08),
    rgba(236,72,153,.08),
    rgba(168,85,247,.08)
  );
  filter: blur(120px);
  animation: auroraMove 30s ease-in-out infinite alternate;
  z-index: -1;
}

@keyframes auroraMove {
  0% { transform: translate(-5%, -5%) rotate(0deg); }
  100% { transform: translate(5%, 5%) rotate(12deg); }
}


/* ===== Base Styles ===== */
* { 
  box-sizing: border-box; 
  margin: 0;
  padding: 0;
}

html { 
  height: 100%; 
  overflow: hidden;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body { 
  height: 100%; 
  overflow: hidden;
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--sans);
  font-size: clamp(14px, 2vw, 15px);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

/* ===== Glassmorphism Effect ===== */
.glass {
  background: var(--panel);
  backdrop-filter: blur(var(--blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(180%);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.glass:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 25px var(--accent-glow);
}

/* ===== Background Particles ===== */
.bg-particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: clamp(150px, 30vw, 300px);
  height: clamp(150px, 30vw, 300px);
  border-radius: 50%;
  filter: blur(clamp(40px, 8vw, 80px));
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}

.particle:nth-child(1) {
  top: 10%;
  left: 20%;
  background: radial-gradient(circle, rgba(99,102,241,0.4), transparent 70%);
  animation-delay: 0s;
}

.particle:nth-child(2) {
  top: 60%;
  right: 15%;
  background: radial-gradient(circle, rgba(34,197,94,0.3), transparent 70%);
  animation-delay: -5s;
}

.particle:nth-child(3) {
  bottom: 20%;
  left: 10%;
  background: radial-gradient(circle, rgba(168,85,247,0.3), transparent 70%);
  animation-delay: -10s;
}

.particle:nth-child(4) {
  top: 40%;
  left: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.25), transparent 70%);
  animation-delay: -15s;
}

.particle:nth-child(5) {
  bottom: 10%;
  right: 30%;
  background: radial-gradient(circle, rgba(34,197,94,0.25), transparent 70%);
  animation-delay: -7s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(clamp(20px, 5vw, 50px), clamp(-40px, -8vw, -80px)) scale(1.1); }
  66% { transform: translate(clamp(-15px, -3vw, -30px), clamp(30px, 6vw, 60px)) scale(0.9); }
}

/* ===== Layout ===== */
.app {
  height: 100vh;
  height: 100dvh; /* Dynamic viewport height for mobile */
  display: grid;
  grid-template-rows: auto 1fr;
  position: relative;
  z-index: 1;
}

/* ===== Topbar ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(8px, 2vw, 14px);
  padding: clamp(12px, 2vh, 16px) clamp(12px, 3vw, 20px);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 10;
}

.brand { 
  display: flex; 
  align-items: center; 
  gap: clamp(8px, 2vw, 12px);
  flex: 1;
  min-width: 0;
}

.avatar {
  width: clamp(38px, 8vw, 44px);
  height: clamp(38px, 8vw, 44px);
  display: grid; 
  place-items: center;
  border-radius: clamp(10px, 2vw, 14px);
  background: rgba(99,102,241,.25);
  border: 1px solid var(--border);
  font-size: clamp(18px, 4vw, 22px);
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.avatar:hover {
  transform: scale(1.08) rotate(5deg);
  box-shadow: 0 0 20px var(--accent-glow);
}

.title { 
  font-weight: 700; 
  font-size: clamp(15px, 3vw, 17px);
  letter-spacing: -0.3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status { 
  font-size: clamp(11px, 2vw, 12px);
  color: var(--muted); 
  display: flex; 
  align-items: center; 
  gap: clamp(6px, 1.5vw, 8px);
  white-space: nowrap;
}

.dot { 
  width: clamp(6px, 1.5vw, 8px);
  height: clamp(6px, 1.5vw, 8px);
  border-radius: 50%; 
  background: #64748b; 
  display: inline-block;
  transition: all var(--transition);
  flex-shrink: 0;
}

.dot.online { 
  background: var(--ok); 
  box-shadow: 0 0 12px var(--ok);
  animation: pulse 2s ease-in-out infinite;
}

.dot.offline { 
  background: var(--bad); 
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.15); }
}

/* ===== Topbar Actions ===== */
.topbar-actions { 
  display: flex; 
  align-items: center; 
  gap: clamp(6px, 1.5vw, 10px);
  flex-shrink: 0;
}

.select {
  padding: clamp(8px, 2vw, 10px) clamp(10px, 2vw, 12px);
  border-radius: var(--radius-sm);
  color: var(--text);
  outline: none;
  cursor: pointer;
  font-size: clamp(12px, 2.5vw, 14px);
  font-weight: 500;
  transition: all var(--transition);
  max-width: 120px;
}

.select:hover,
.select:focus {
  transform: translateY(-2px);
}

.icon-btn {
  padding: clamp(8px, 2vw, 10px) clamp(10px, 2vw, 12px);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.icon-btn:hover {
  transform: translateY(-3px) scale(1.05);
}

.icon-btn:active {
  transform: translateY(-1px) scale(0.98);
}

.icon-content {
  display: block;
  font-size: clamp(16px, 3.5vw, 18px);
  position: relative;
  z-index: 1;
}

/* ===== Chat Container ===== */
.chat {
  display: grid;
  grid-template-rows: 1fr auto auto auto;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* ===== Messages ===== */
.messages {
  padding: clamp(12px, 3vw, 20px);
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.messages::-webkit-scrollbar {
  width: clamp(6px, 1.5vw, 8px);
}

.messages::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.05);
  border-radius: 10px;
}

.messages::-webkit-scrollbar-thumb {
  background: rgba(99,102,241,0.4);
  border-radius: 10px;
}

.messages::-webkit-scrollbar-thumb:hover {
  background: rgba(99,102,241,0.6);
}

.msg { 
  display: flex; 
  margin: clamp(10px, 2vh, 14px) 0;
  animation: slideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.msg.user { 
  justify-content: flex-end; 
}

.msg.bot { 
  justify-content: flex-start; 
}

.bubble {
  position: relative;
  overflow: hidden;
  max-width: min(720px, 85%); 
  border-radius: var(--radius); 
  padding: clamp(12px, 2vh, 14px) clamp(14px, 3vw, 16px); 
  box-shadow: var(--shadow-sm); 
  position: relative; 
  transition: all var(--transition); 
  word-wrap: break-word; 
  overflow-wrap: break-word;
}
.bubble::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255,255,255,.08),
    transparent
  );
  opacity: 0;
  transform: translateX(-100%);
}

.bubble:hover::after {
  opacity: 1;
  transform: translateX(100%);
  transition: transform 0.9s ease, opacity 0.3s ease;
}

.msg.user .bubble { 
  background: var(--bubble-user); 
}

.msg.bot .bubble { 
  background: var(--bubble-bot); 
}

.bubble-title { 
  font-weight: 700; 
  margin-bottom: clamp(6px, 1.5vh, 8px);
  font-size: clamp(14px, 3vw, 16px);
  letter-spacing: -0.2px;
}

.bubble-text { 
  white-space: pre-wrap; 
  line-height: 1.5;
  font-size: clamp(13px, 2.8vw, 15px);
}

.bubble-hint { 
  margin-top: clamp(8px, 2vh, 10px);
  font-size: clamp(11px, 2.5vw, 13px);
  color: var(--muted);
  font-style: italic;
}

/* ===== Typing Indicator ===== */
.typing {
  display: flex;
  align-items: center;
  gap: clamp(8px, 2vw, 10px);
  padding: 0 clamp(12px, 3vw, 20px) clamp(10px, 2vh, 12px) clamp(12px, 3vw, 20px);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.typing-bubble {
  padding: clamp(10px, 2vh, 12px) clamp(14px, 3vw, 16px);
  border-radius: 18px;
  display: flex;
  gap: clamp(5px, 1.2vw, 6px);
  align-items: center;
}

.typing-dot {
  width: clamp(6px, 1.5vw, 8px);
  height: clamp(6px, 1.5vw, 8px);
  background: var(--accent);
  border-radius: 50%;
  animation: bounce 1.2s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes bounce { 
  0%, 100% { transform: translateY(0); opacity: 0.7; } 
  50% { transform: translateY(clamp(-6px, -1.5vh, -8px)); opacity: 1; } 
}

/* ===== Suggestions ===== */
.suggestions-wrap { 
  padding: 0 clamp(12px, 3vw, 20px) clamp(10px, 2vh, 14px) clamp(12px, 3vw, 20px);
  animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.suggestions-label { 
  font-size: clamp(11px, 2.2vw, 12px);
  color: var(--muted); 
  margin-bottom: clamp(6px, 1.5vh, 8px);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.suggestions { 
  display: flex; 
  flex-wrap: wrap; 
  gap: clamp(8px, 2vw, 10px);
}

.chip {
  padding: clamp(8px, 2vw, 10px) clamp(12px, 2.5vw, 14px);
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(99,102,241,.15);
  cursor: pointer;
  user-select: none;
  font-size: clamp(12px, 2.5vw, 13px);
  font-weight: 500;
  transition: all var(--transition);
  backdrop-filter: blur(8px);
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--accent);
  background: rgba(99,102,241,.25);
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 20px rgba(99,102,241,.3);
}

.chip:active {
  transform: translateY(0) scale(0.98);
}

/* ===== Composer (Input Area) ===== */
.composer {
  display: flex;
  gap: clamp(8px, 2vw, 12px);
  padding: clamp(12px, 2vh, 16px) clamp(12px, 3vw, 20px);
  border-top: 1px solid var(--border);
  animation: composerFloat 6s ease-in-out infinite;
  position: relative;
  z-index: 5;
}

@keyframes composerFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.glass-input {
  flex: 1;
  padding: clamp(12px, 2vh, 14px) clamp(14px, 3vw, 16px);
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  color: var(--text);
  outline: none;
  font-size: clamp(14px, 3vw, 15px);
  transition: all var(--transition);
  backdrop-filter: blur(10px);
  font-family: inherit;
  line-height: 1.5;
}

.glass-input:focus {
  border-color: var(--accent);
  background: rgba(255,255,255,.08);
  box-shadow: 0 0 20px rgba(99,102,241,.2);
  transform: translateY(-2px);
}

.glass-input::placeholder {
  color: var(--muted);
}

.send {
  padding: clamp(12px, 2vh, 14px) clamp(16px, 3vw, 20px);
  border-radius: 16px;
  box-shadow: 0 0 0 rgba(56,189,248,0.0);
  border: 1px solid rgba(99,102,241,.5);
  background: rgba(99,102,241,.2);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  font-size: clamp(13px, 2.8vw, 14px);
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.5vw, 8px);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.send::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,.3), rgba(168,85,247,.3));
  opacity: 0;
  transition: opacity var(--transition);
}

.send:hover::before {
  opacity: 1;
}

.send:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 30px rgba(99,102,241,.4);
  animation: pulseGlow 1.8s infinite;
}

.send:active {
  transform: translateY(-1px) scale(0.98);
}

.send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.send-icon,
.send-text {
  position: relative;
  z-index: 1;
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 rgba(56,189,248,.0); }
  50% { box-shadow: 0 0 30px rgba(56,189,248,.45); }
  100% { box-shadow: 0 0 0 rgba(56,189,248,.0); }
}

/* ===== Meta (Confidence & Source) ===== */
.meta {
  padding: clamp(10px, 2vh, 12px) clamp(12px, 3vw, 20px);
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 12px);
  color: var(--muted);
  font-size: clamp(11px, 2.2vw, 12px);
  flex-wrap: wrap;
}

.badge {
  font-family: var(--mono);
  padding: clamp(5px, 1vh, 6px) clamp(8px, 2vw, 10px);
  border-radius: 999px;
  font-size: clamp(10px, 2vw, 11px);
  font-weight: 700;
  backdrop-filter: blur(8px);
  transition: all var(--transition);
}

.badge.high { 
  border-color: rgba(34,197,94,.6); 
  background: rgba(34,197,94,.15);
  color: var(--ok);
}

.badge.med { 
  border-color: rgba(245,158,11,.6);
  background: rgba(245,158,11,.15);
  color: #f59e0b;
}

.badge.low { 
  border-color: rgba(239,68,68,.6);
  background: rgba(239,68,68,.15);
  color: var(--bad);
}

.source {
  font-weight: 500;
}

/* ===== Panel (Settings) ===== */
.panel {
  position: fixed;
  top: clamp(10px, 2vh, 14px);
  right: clamp(10px, 2vw, 14px);
  width: min(450px, calc(100vw - clamp(20px, 4vw, 28px)));
  height: calc(100vh - clamp(20px, 4vh, 28px));
  height: calc(100dvh - clamp(20px, 4vh, 28px));
  border-radius: 20px;
  box-shadow: var(--shadow);
  z-index: 50;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: clamp(14px, 2.5vh, 16px) clamp(16px, 3vw, 18px);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.panel-title { 
  font-weight: 700;
  font-size: clamp(15px, 3vw, 17px);
  letter-spacing: -0.3px;
}

.panel-body {
  padding: clamp(14px, 2.5vh, 16px);
  overflow-y: auto;
  overflow-x: hidden;
  display: grid;
  gap: clamp(12px, 2.5vh, 14px);
  flex: 1;
  -webkit-overflow-scrolling: touch;
}

.panel-body::-webkit-scrollbar {
  width: clamp(5px, 1.2vw, 6px);
}

.panel-body::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.05);
}

.panel-body::-webkit-scrollbar-thumb {
  background: rgba(99,102,241,0.4);
  border-radius: 10px;
}

/* ===== Card ===== */
.card {
  border-radius: 16px;
  padding: clamp(12px, 2.5vh, 14px);
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-2px);
}

.card-title { 
  font-weight: 700; 
  margin-bottom: clamp(8px, 2vh, 10px);
  font-size: clamp(14px, 3vw, 15px);
}

.kv { 
  font-size: clamp(12px, 2.5vw, 13px);
  color: var(--muted); 
  line-height: 1.6; 
}

.kv div {
  margin: clamp(5px, 1vh, 6px) 0;
}

.kv b { 
  color: var(--text); 
  font-weight: 600; 
}

/* ===== Toggle ===== */
.toggle { 
  display: flex; 
  gap: clamp(8px, 2vw, 10px);
  align-items: center; 
  margin: clamp(8px, 2vh, 10px) 0;
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
  font-size: clamp(13px, 2.8vw, 14px);
}

.toggle:hover {
  color: var(--accent);
}

.toggle input { 
  transform: scale(1.15);
  cursor: pointer;
  accent-color: var(--accent);
  min-width: 16px;
  min-height: 16px;
}

/* ===== Actions ===== */
.actions { 
  display: flex; 
  gap: clamp(8px, 2vw, 10px);
  flex-wrap: wrap; 
}

.btn {
  padding: clamp(10px, 2vh, 11px) clamp(12px, 2.5vw, 14px);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  font-size: clamp(13px, 2.8vw, 14px);
  font-weight: 500;
  transition: all var(--transition);
  flex: 1;
  min-width: clamp(100px, 25vw, 120px);
  text-align: center;
}

.btn:hover {
  transform: translateY(-3px);
}

.btn:active {
  transform: translateY(-1px);
}

/* ===== About ===== */
.about-text {
  font-size: clamp(12px, 2.5vw, 13px);
  line-height: 1.6;
  color: var(--muted);
}

.about-text p {
  margin: clamp(6px, 1.5vh, 8px) 0;
}

.about-text strong {
  color: var(--text);
  font-weight: 600;
}

.version {
  margin-top: clamp(10px, 2vh, 12px);
  font-size: clamp(10px, 2vw, 11px);
  opacity: 0.7;
}

/* ===== Overlay ===== */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(6px);
  z-index: 40;
  transition: opacity var(--transition);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  left: 50%;
  bottom: clamp(16px, 3vh, 24px);
  transform: translateX(-50%) translateY(100px);
  padding: clamp(10px, 2vh, 12px) clamp(14px, 3vw, 18px);
  border-radius: 16px;
  z-index: 60;
  max-width: min(560px, calc(100vw - 40px));
  box-shadow: var(--shadow);
  font-size: clamp(13px, 2.8vw, 14px);
  font-weight: 500;
  animation: toastIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  text-align: center;
}



.title,
.panel-title,
.card-title {
  font-family: 'Plus Jakarta Sans', var(--sans);
  letter-spacing: -0.4px;
}

.bubble-text {
  font-family: 'Inter', var(--sans);
}

.kv,
.meta,
.badge {
  font-family: 'JetBrains Mono', var(--mono);
}


@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* ===== Utilities ===== */
.hidden { 
  display: none !important; 
}

/* ===== Responsive Mobile ===== */
@media (max-width: 640px) {
  .topbar {
    padding: 10px 14px;
  }
  
  .brand {
    gap: 8px;
  }
  
  .title {
    font-size: 14px;
  }
  
  .status {
    font-size: 10px;
  }
  
  .messages {
    padding: 12px;
  }
  
  .bubble {
    max-width: 90%;
    padding: 10px 12px;
  }
  
  .composer {
    padding: 10px 12px;
    gap: 8px;
  }
  
  .glass-input {
    padding: 10px 12px;
    font-size: 14px;
  }
  
  .send-text {
    display: none;
  }
  
  .send {
    padding: 10px 12px;
  }
  
  .panel {
    top: 0;
    right: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    border-radius: 0;
  }
  
  .chip {
    font-size: 11px;
    padding: 6px 10px;
  }
  
  .meta {
    padding: 8px 12px;
    font-size: 10px;
  }
  
  .select {
    font-size: 11px;
    padding: 6px 8px;
  }
  
  .icon-content {
    font-size: 16px;
  }
}

/* ==========================================
   BACK BUTTON - NAVIGATION TO PARENT SITE
   ========================================== */

.back-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  color: var(--text-primary, #ffffff);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 
    0 2px 8px rgba(0, 0, 0, 0.1),
    inset 0 1px 1px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

/* Animated gradient on hover */
.back-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(99, 102, 241, 0.2), 
    transparent);
  transition: left 0.5s ease;
}

.back-btn:hover::before {
  left: 100%;
}

.back-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateX(-4px);
  box-shadow: 
    0 4px 16px rgba(99, 102, 241, 0.3),
    inset 0 1px 1px rgba(255, 255, 255, 0.2);
}

.back-btn:active {
  transform: translateX(-2px) scale(0.98);
  box-shadow: 
    0 2px 8px rgba(99, 102, 241, 0.2),
    inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

/* Back icon with animation */
.back-icon {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  flex-shrink: 0;
}

.back-btn:hover .back-icon {
  transform: translateX(-4px);
  animation: arrowBounce 0.6s ease infinite;
}

@keyframes arrowBounce {
  0%, 100% {
    transform: translateX(-4px);
  }
  50% {
    transform: translateX(-8px);
  }
}

/* Back text */
.back-text {
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.3px;
  position: relative;
  z-index: 1;
}

/* Focus state for accessibility */
.back-btn:focus {
  outline: none;
  box-shadow: 
    0 4px 16px rgba(99, 102, 241, 0.4),
    0 0 0 3px rgba(99, 102, 241, 0.3);
}

/* ==========================================
   TOPBAR LAYOUT ADJUSTMENTS
   ========================================== */

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: rgba(15, 15, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

/* Adjust brand to take remaining space */
.brand {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

/* ==========================================
   MOBILE RESPONSIVE
   ========================================== */

@media (max-width: 768px) {
  .topbar {
    padding: 10px 12px;
    gap: 12px;
  }

  .back-btn {
    padding: 6px 12px;
    gap: 6px;
  }

  .back-icon {
    width: 18px;
    height: 18px;
  }

  .back-text {
    font-size: 13px;
  }
}

/* On very small screens, show only icon */
@media (max-width: 480px) {
  .back-text {
    display: none;
  }

  .back-btn {
    padding: 8px;
    border-radius: 10px;
    min-width: 36px;
    justify-content: center;
  }

  .back-icon {
    width: 20px;
    height: 20px;
  }
}

/* ==========================================
   DARK/LIGHT THEME SUPPORT
   ========================================== */

/* Light mode (if you have theme toggle) */
[data-theme="light"] .back-btn {
  background: rgba(0, 0, 0, 0.05);
  color: #1a1a1a;
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .back-btn:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.3);
}

/* ==========================================
   ALTERNATIVE STYLES (Optional)
   ========================================== */

/* Minimal style - uncomment to use */
/*
.back-btn.minimal {
  background: transparent;
  border: none;
  padding: 8px;
  color: rgba(255, 255, 255, 0.7);
}

.back-btn.minimal:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #6366f1;
}
*/

/* Pill style with gradient - uncomment to use */
/*
.back-btn.gradient {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border: none;
  color: white;
}

.back-btn.gradient:hover {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}
*/


/* ===== Tablet ===== */
@media (min-width: 641px) and (max-width: 1024px) {
  .bubble {
    max-width: 80%;
  }
  
  .panel {
    width: min(420px, calc(100vw - 24px));
  }
}

/* ===== Landscape Mobile ===== */
@media (max-width: 900px) and (orientation: landscape) {
  .topbar {
    padding: 8px 14px;
  }
  
  .messages {
    padding: 10px 14px;
  }
  
  .composer {
    padding: 8px 14px;
  }
  
  .bubble {
    max-width: 75%;
  }
}

/* ===== Smooth Transitions ===== */
* {
  transition-property: background-color, border-color, color, fill, stroke, opacity, box-shadow, transform;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

/* ===== Touch Optimization ===== */
@media (hover: none) and (pointer: coarse) {
  .icon-btn,
  .chip,
  .btn,
  .send {
    min-height: 44px;
    min-width: 44px;
  }
  
  .glass-input {
    font-size: 16px; /* Prevents iOS zoom */
  }
}

/* ===== Print ===== */
@media print {
  .bg-particles,
  .topbar-actions,
  .composer,
  .meta,
  .panel,
  .overlay,
  .toast {
    display: none !important;
  }
  
  body {
    background: white;
  }
}