/* ── LAYOUT ── */
.chat-layout {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 72px);
  margin-top: 72px;
  padding: 1rem 1.5rem 1rem;
  gap: 0.75rem;
  position: relative;
  z-index: 1;
}

/* ── HERO ── */
.chat-hero {
  flex-shrink: 0;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.chat-hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--on-surface);
}

.chat-hero h1 .gradient-text {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(255,0,127,0.3));
}

.chat-hero p {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--on-surface-variant);
}

/* ── BROADCAST BAR ── */
.broadcast-card {
  flex-shrink: 0;
  background: rgba(37,37,44,0.5);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,0,127,0.15);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.broadcast-card input {
  flex: 1;
  background: rgba(14,14,19,0.6);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 0.5rem;
  color: var(--on-surface);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.82rem;
  padding: 0.55rem 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.broadcast-card input:focus { border-color: rgba(255,0,127,0.3); }
.broadcast-card input::placeholder { color: var(--on-surface-variant); }

.btn-broadcast {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: var(--on-primary);
  border: none;
  cursor: pointer;
  padding: 0.55rem 1.25rem;
  border-radius: 9999px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
  box-shadow: 0 0 20px rgba(255,0,127,0.25);
  transition: transform 0.15s, box-shadow 0.2s;
  flex-shrink: 0;
}
.btn-broadcast .material-symbols-outlined { font-size: 0.9rem; }
.btn-broadcast:hover { transform: scale(1.03); box-shadow: 0 0 30px rgba(255,0,127,0.4); }
.btn-broadcast:active { transform: scale(0.97); }

.btn-clear-all {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.5rem;
  color: var(--on-surface-variant);
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  flex-shrink: 0;
}
.btn-clear-all .material-symbols-outlined { font-size: 1.1rem; }
.btn-clear-all:hover { border-color: rgba(255,100,100,0.4); color: #ff6b6b; background: rgba(255,50,50,0.06); }

/* ── PANELS GRID ── */
.panels-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  min-height: 0;
}

/* ── PANEL ── */
.panel {
  display: flex;
  flex-direction: column;
  background: rgba(37,37,44,0.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 1rem;
  border: 1px solid rgba(255,255,255,0.06);
  overflow: hidden;
  min-height: 0;
  transition: border-color 0.3s;
}

/* Per-model accent colours */
:root {
  --claude-color: #FF007F;
  --openai-color: #00eefc;
  --gemini-color: #a78bfa;
}

.panel-claude { border-color: rgba(255,0,127,0.2); box-shadow: inset 0 0 20px rgba(255,0,127,0.03); }
.panel-openai { border-color: rgba(0,238,252,0.2); box-shadow: inset 0 0 20px rgba(0,238,252,0.03); }
.panel-gemini { border-color: rgba(167,139,250,0.2); box-shadow: inset 0 0 20px rgba(167,139,250,0.03); }

/* ── PANEL HEADER ── */
.panel-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  flex-shrink: 0;
}

.panel-indicator {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.panel-claude .panel-indicator { background: var(--claude-color); box-shadow: 0 0 8px var(--claude-color); }
.panel-openai .panel-indicator { background: var(--openai-color); box-shadow: 0 0 8px var(--openai-color); }
.panel-gemini .panel-indicator { background: var(--gemini-color); box-shadow: 0 0 8px var(--gemini-color); }

.panel-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.panel-claude .panel-name { color: var(--claude-color); }
.panel-openai .panel-name { color: var(--openai-color); }
.panel-gemini .panel-name { color: var(--gemini-color); }

.panel-model {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--on-surface-variant);
  margin-left: auto;
  letter-spacing: 0.04em;
}

/* ── MESSAGES ── */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 0;
}
.messages::-webkit-scrollbar { width: 3px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.empty-state {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(248,245,253,0.2);
}

/* ── MESSAGE BUBBLES ── */
.msg {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  animation: msgIn 0.2s ease;
}
@keyframes msgIn { from { opacity:0; transform: translateY(5px); } to { opacity:1; transform:none; } }

.msg-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.55rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--on-surface-variant);
  padding: 0 0.25rem;
}

.msg-bubble {
  padding: 0.6rem 0.85rem;
  border-radius: 0.6rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.78rem;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}

.msg.user .msg-bubble {
  background: rgba(255,0,127,0.08);
  border: 1px solid rgba(255,0,127,0.15);
  color: rgba(248,245,253,0.8);
  align-self: flex-end;
  max-width: 90%;
  border-bottom-right-radius: 0.15rem;
}

.msg.assistant .msg-bubble {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  color: var(--on-surface);
  align-self: flex-start;
  max-width: 100%;
  border-bottom-left-radius: 0.15rem;
}

.panel-claude .msg.assistant .msg-bubble { border-color: rgba(255,0,127,0.12); }
.panel-openai .msg.assistant .msg-bubble { border-color: rgba(0,238,252,0.12); }
.panel-gemini .msg.assistant .msg-bubble { border-color: rgba(167,139,250,0.12); }

.msg.error .msg-bubble {
  background: rgba(255,50,50,0.06);
  border: 1px solid rgba(255,80,80,0.2);
  color: #ff8080;
}

/* ── THINKING DOTS ── */
.thinking {
  display: flex;
  gap: 5px;
  align-items: center;
  padding: 0.6rem 0.85rem;
}
.thinking span {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--on-surface-variant);
  animation: thinkBlink 1.2s infinite;
}
.thinking span:nth-child(2) { animation-delay: 0.2s; }
.thinking span:nth-child(3) { animation-delay: 0.4s; }
@keyframes thinkBlink { 0%,80%,100% { opacity:0.2; transform: scale(0.8); } 40% { opacity:1; transform: scale(1); } }

/* ── PANEL INPUT ── */
.panel-input {
  display: flex;
  gap: 0.5rem;
  padding: 0.6rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  flex-shrink: 0;
  align-items: flex-end;
}

.panel-input textarea {
  flex: 1;
  background: rgba(14,14,19,0.6);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 0.5rem;
  color: var(--on-surface);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.78rem;
  padding: 0.5rem 0.75rem;
  resize: none;
  outline: none;
  height: 36px;
  line-height: 1.5;
  transition: border-color 0.2s, height 0.1s;
}
.panel-claude .panel-input textarea:focus { border-color: rgba(255,0,127,0.3); }
.panel-openai .panel-input textarea:focus { border-color: rgba(0,238,252,0.3); }
.panel-gemini .panel-input textarea:focus { border-color: rgba(167,139,250,0.3); }
.panel-input textarea::placeholder { color: var(--on-surface-variant); }

.btn-send {
  width: 36px; height: 36px;
  border-radius: 0.5rem;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  color: var(--on-surface-variant);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.btn-send .material-symbols-outlined { font-size: 1rem; }
.panel-claude .btn-send:hover { background: rgba(255,0,127,0.12); border-color: rgba(255,0,127,0.4); color: var(--claude-color); }
.panel-openai .btn-send:hover { background: rgba(0,238,252,0.1); border-color: rgba(0,238,252,0.4); color: var(--openai-color); }
.panel-gemini .btn-send:hover { background: rgba(167,139,250,0.1); border-color: rgba(167,139,250,0.4); color: var(--gemini-color); }
.btn-send:active { transform: scale(0.93); }

/* ── AMBIENT ── */
.ambient {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0; overflow: hidden;
}
.ambient::before {
  content: '';
  position: absolute; top: -20%; left: -5%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,0,127,0.05) 0%, transparent 70%);
  border-radius: 50%;
  animation: drift1 18s ease-in-out infinite alternate;
}
.ambient::after {
  content: '';
  position: absolute; bottom: -20%; right: -5%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,238,252,0.04) 0%, transparent 70%);
  border-radius: 50%;
  animation: drift2 22s ease-in-out infinite alternate;
}
@keyframes drift1 { from { transform: translate(0,0); } to { transform: translate(60px,40px); } }
@keyframes drift2 { from { transform: translate(0,0); } to { transform: translate(-50px,-60px); } }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .panels-grid { grid-template-columns: 1fr; }
  .chat-layout { height: auto; min-height: calc(100vh - 72px); }
  .panel { height: 400px; }
}