/* ============================================================
   TALAN.PRO — Ask DU1 — Floating AI Assistant
   ============================================================ */

/* ── Easter egg trigger ── */
.du1-egg {
  background: none;
  border: none;
  color: var(--text-muted);
  opacity: 0.30;
  cursor: pointer;
  padding: 4px 5px;
  border-radius: var(--radius-sm);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    color var(--duration-slow) var(--ease-out),
    transform var(--duration-base) var(--ease-spring);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  animation: du1-idle 6s ease-in-out infinite;
  margin-left: var(--space-2);
  vertical-align: middle;
}

.du1-egg:hover {
  opacity: 0.85;
  color: var(--accent-blue);
  transform: scale(1.2);
  animation: none;
}

.du1-egg:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
  opacity: 0.85;
}

@keyframes du1-idle {
  0%, 85%, 100% { opacity: 0.28; }
  90%           { opacity: 0.45; }
}

/* ── Chat panel ── */
.du1-panel {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: clamp(320px, 90vw, 400px);
  max-height: min(580px, calc(100vh - 100px));
  background: rgba(10, 10, 20, 0.88);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  border-radius: var(--radius-2xl);
  box-shadow:
    0 0 0 1px rgba(79, 195, 247, 0.08),
    0 32px 80px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(79, 195, 247, 0.05);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 600;
  pointer-events: none;
  opacity: 0;
  transform: translateY(16px) scale(0.97);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.du1-panel.open {
  pointer-events: all;
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ── Header ── */
.du1-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.025);
}

.du1-header-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.du1-avatar {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-blue-dim), var(--accent-violet-dim));
  border: 1px solid rgba(79, 195, 247, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.du1-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  letter-spacing: var(--tracking-snug);
}

.du1-status {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 1px;
}

.du1-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #50fa7b;
  box-shadow: 0 0 6px #50fa7b;
  animation: pulse 2.5s ease-in-out infinite;
  flex-shrink: 0;
}

.du1-status-dot.loading {
  background: var(--accent-blue);
  box-shadow: 0 0 6px var(--accent-blue);
  animation: pulse 0.8s ease-in-out infinite;
}

.du1-close {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-md);
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast);
  flex-shrink: 0;
}

.du1-close:hover {
  background: rgba(255, 100, 100, 0.1);
  border-color: rgba(255, 100, 100, 0.2);
  color: #ff6464;
}

/* ── Messages area ── */
.du1-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  scroll-behavior: smooth;
}

.du1-messages::-webkit-scrollbar { width: 4px; }
.du1-messages::-webkit-scrollbar-track { background: transparent; }
.du1-messages::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
}

/* ── Message bubbles ── */
.du1-msg {
  display: flex;
  gap: var(--space-2);
  animation: fadeInUp 0.25s var(--ease-out) both;
  max-width: 100%;
}

.du1-msg.user {
  flex-direction: row-reverse;
}

.du1-msg-bubble {
  max-width: 82%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  line-height: 1.65;
  word-break: break-word;
}

.du1-msg.assistant .du1-msg-bubble {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-bottom-left-radius: var(--radius-sm);
}

.du1-msg.user .du1-msg-bubble {
  background: linear-gradient(135deg, var(--accent-blue-dim), var(--accent-violet-dim));
  border: 1px solid rgba(79, 195, 247, 0.2);
  color: var(--text-primary);
  border-bottom-right-radius: var(--radius-sm);
}

/* ── Loading indicator ── */
.du1-loading {
  display: flex;
  gap: var(--space-2);
  animation: fadeInUp 0.2s var(--ease-out) both;
}

.du1-loading-dots {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: var(--radius-sm);
}

.du1-loading-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
  opacity: 0.5;
  animation: du1-dot-bounce 1.2s ease-in-out infinite;
}

.du1-loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.du1-loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes du1-dot-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30%           { transform: translateY(-6px); opacity: 1; }
}

/* ── Error message ── */
.du1-error {
  font-size: var(--text-xs);
  color: #ff6464;
  background: rgba(255, 100, 100, 0.07);
  border: 1px solid rgba(255, 100, 100, 0.15);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  text-align: center;
  animation: fadeInUp 0.2s var(--ease-out) both;
}

/* ── Welcome message ── */
.du1-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-4);
  gap: var(--space-3);
  color: var(--text-muted);
  animation: fadeIn 0.4s var(--ease-out) both;
}

.du1-welcome-icon {
  font-size: 32px;
  margin-bottom: var(--space-1);
}

.du1-welcome-text {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--text-secondary);
}

.du1-welcome-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  padding: var(--space-2) var(--space-4);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
}

/* ── Input area ── */
.du1-input-area {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4) var(--space-4);
  border-top: 1px solid var(--glass-border);
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.015);
}

.du1-input {
  flex: 1;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  padding: var(--space-3) var(--space-4);
  outline: none;
  resize: none;
  line-height: 1.5;
  max-height: 100px;
  min-height: 40px;
  overflow-y: auto;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  caret-color: var(--accent-blue);
}

.du1-input::placeholder { color: var(--text-muted); }

.du1-input:focus {
  border-color: rgba(79, 195, 247, 0.35);
  box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.06);
}

.du1-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.du1-send {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  border: none;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition:
    transform var(--duration-fast) var(--ease-spring),
    box-shadow var(--duration-base),
    opacity var(--duration-fast);
  box-shadow: 0 0 16px rgba(79, 195, 247, 0.25);
  align-self: flex-end;
}

.du1-send:hover:not(:disabled) {
  transform: scale(1.08);
  box-shadow: 0 0 28px rgba(79, 195, 247, 0.45);
}

.du1-send:active:not(:disabled) {
  transform: scale(0.94);
}

.du1-send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Mobile responsive ── */
@media (max-width: 480px) {
  .du1-panel {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    max-height: 75vh;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    transform: translateY(20px) scale(1);
  }

  .du1-panel.open {
    transform: translateY(0) scale(1);
  }
}