/* ============================================
   Integrative Resets -- Text Chat Overlay
   Full-screen dark overlay for AI text chat
   ============================================ */

.ir-chat-overlay {
  position: fixed;
  inset: 0;
  z-index: 10002;
  background: rgba(29, 64, 38, 0.97);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  overflow-y: auto;
}

.ir-chat-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.ir-chat-close {
  position: absolute;
  top: 1.5rem;
  right: 2rem;
  background: none;
  border: none;
  color: rgba(255,255,255,0.5);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  transition: color 0.3s;
}

.ir-chat-close:hover { color: #fff; }

.ir-chat-content {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-height: calc(100vh - 4rem);
}

.ir-chat-title {
  font-family: 'Philosopher', serif;
  font-size: 1.8rem;
  color: #fff;
  text-align: center;
  margin-bottom: 0.3rem;
  flex-shrink: 0;
}

.ir-chat-subtitle {
  font-family: 'Lato', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-main);
  margin-bottom: 1.5rem;
  flex-shrink: 0;
}

.ir-chat-messages {
  flex: 1;
  overflow-y: auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 0;
  min-height: 0;
}

.ir-chat-msg {
  max-width: 85%;
  padding: 0.7rem 1rem;
  border-radius: 12px;
  font-family: 'Lato', sans-serif;
  font-size: 13px;
  line-height: 1.7;
  word-wrap: break-word;
}

.ir-chat-msg.user {
  align-self: flex-end;
  background: var(--color-main);
  color: #fff;
  border-bottom-right-radius: 3px;
}

.ir-chat-msg.assistant {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.85);
  border-bottom-left-radius: 3px;
}

.ir-chat-msg.system {
  align-self: center;
  background: none;
  color: rgba(255, 255, 255, 0.35);
  font-size: 12px;
  font-style: italic;
  text-align: center;
  padding: 0.3rem;
}

.ir-chat-typing {
  align-self: flex-start;
  padding: 0.5rem 0;
  font-family: 'Lato', sans-serif;
  font-size: 12px;
  color: var(--color-main);
  font-style: italic;
}

.ir-chat-input-wrap {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 1rem 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  gap: 0.5rem;
  flex-shrink: 0;
  margin-top: auto;
}

.ir-chat-input {
  flex: 1;
  font-family: 'Lato', sans-serif;
  font-size: 13px;
  padding: 0.6rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  outline: none;
  background: transparent;
  color: #fff;
  transition: border-color 0.3s;
}

.ir-chat-input::placeholder { color: rgba(255, 255, 255, 0.3); }
.ir-chat-input:focus { border-color: var(--color-main); }

.ir-chat-send {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.45);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s;
}

.ir-chat-send:hover { border-color: var(--color-main); color: var(--color-main); }
.ir-chat-send:disabled { opacity: 0.25; cursor: not-allowed; }
.ir-chat-send svg { width: 16px; height: 16px; fill: currentColor; }

@media (max-width: 768px) {
  .ir-chat-title { font-size: 1.4rem; }
  .ir-chat-overlay { padding: 2rem 1.25rem; }
}