/* ═══════════════════════════════════════════════════════════
   CHAT INTERFACE ENHANCEMENTS
   Improved message positioning, alignment, and responsiveness
   ═══════════════════════════════════════════════════════════ */

/* Enhanced message bubble positioning */
.message-row {
  display: flex;
  width: 100%;
  margin-bottom: 4px;
}

.message-row.user {
  justify-content: flex-end;
}

.message-row.agent {
  justify-content: flex-start;
}

.message-bubble {
  max-width: min(80%, 540px);
  border-radius: 18px;
  padding: 13px 16px 11px;
  line-height: 1.8;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: normal;
  hyphens: auto;
  box-shadow: 0 4px 14px rgba(0,0,0,.2);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.message-bubble:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0,0,0,.25);
}

.message-row.user .message-bubble {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  border-bottom-right-radius: 4px;
  text-align: start;
}

.message-row.agent .message-bubble {
  background: linear-gradient(180deg, rgba(30,41,59,.96), rgba(26,36,52,.92));
  color: #eef4ff;
  border: 1px solid rgba(255,255,255,.08);
  border-bottom-left-radius: 4px;
  text-align: start;
}

.message-text {
  font-size: 0.95rem;
  line-height: 1.75;
  word-wrap: break-word;
}

.message-time {
  margin-top: 7px;
  font-size: 0.73rem;
  opacity: 0.85;
  text-align: start;
  direction: ltr;
}

.message-row.user .message-time {
  color: rgba(255,255,255,.8);
}

.message-row.agent .message-time {
  color: rgba(158,176,201,.75);
}

/* Messages container improvements */
.messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 100%;
  padding-bottom: 8px;
}

/* Date separator styling */
.date-separator {
  align-self: center;
  margin: 10px 0;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  color: rgba(158,176,201,.85);
  font-size: 0.77rem;
  border: 1px solid rgba(255,255,255,.06);
  font-weight: 500;
}

/* Typing indicator improvements */
.typing-indicator {
  display: none;
  padding: 14px 18px;
  margin: 0 auto 0 0;
  max-width: 85px;
  border-radius: 18px;
  border-bottom-left-radius: 4px;
  background: rgba(30,41,59,.9);
  border: 1px solid rgba(255,255,255,.06);
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
}

.typing-indicator.show {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: center;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  background: rgba(158,176,201,.75);
  border-radius: 50%;
  animation: typing-bounce 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}

/* Composer improvements */
.composer {
  position: sticky;
  bottom: 0;
  z-index: 3;
  padding: 16px 18px;
  padding-bottom: calc(16px + env(safe-area-inset-bottom));
  border-top: 1px solid rgba(255,255,255,.1);
  background: rgba(15, 23, 42, .98);
  backdrop-filter: blur(18px);
  box-shadow: 0 -6px 24px rgba(0,0,0,.2);
}

.composer-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: flex-end;
  width: 100%;
}

#messageInput {
  width: 100%;
  min-height: 50px;
  max-height: 160px;
  resize: none;
  border-radius: 14px;
  border: 1.5px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.06);
  color: #eef4ff;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.65;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  overflow-y: auto;
}

#messageInput:focus {
  outline: 0;
  border-color: #10b981;
  background: rgba(255,255,255,.08);
  box-shadow: 0 0 0 4px rgba(16,185,129,.15);
}

#messageInput::placeholder {
  color: rgba(158,176,201,.6);
}

#sendButton {
  width: 54px;
  height: 50px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 12px rgba(16,185,129,.3);
}

#sendButton:hover {
  background: linear-gradient(135deg, #059669, #047857);
  box-shadow: 0 6px 16px rgba(16,185,129,.4);
}

#sendButton:active {
  transform: scale(.96);
}

/* Welcome box improvements */
.welcome-box {
  margin: 0 auto 16px;
  padding: 24px 22px;
  width: min(100%, 540px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(16,185,129,.12), rgba(255,255,255,.05));
  text-align: center;
  box-shadow: 0 12px 32px rgba(0,0,0,.3);
}

.welcome-box h2 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #eef4ff;
}

.welcome-box p {
  margin: 0;
  color: rgba(158,176,201,.95);
  line-height: 1.85;
  font-size: 0.92rem;
}

/* Quick actions improvements */
.quick-actions {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 14px;
}

.quick-button {
  border: 1px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.05);
  color: rgba(237,243,255,.92);
  border-radius: 999px;
  padding: 11px 16px;
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.quick-button:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.16);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
}

.quick-button:active {
  transform: scale(0.97);
}

/* Responsive improvements */
@media (max-width: 768px) {
  .message-bubble {
    max-width: 85%;
    padding: 12px 15px 10px;
  }

  .composer {
    padding: 14px 16px;
    padding-bottom: calc(14px + env(safe-area-inset-bottom));
  }

  #messageInput {
    min-height: 48px;
    padding: 12px 14px;
  }

  #sendButton {
    width: 50px;
    height: 48px;
  }

  .welcome-box {
    padding: 20px 18px;
  }
}

@media (max-width: 480px) {
  .message-bubble {
    max-width: 90%;
    padding: 11px 14px 9px;
    font-size: 0.93rem;
  }

  .message-text {
    font-size: 0.93rem;
  }

  .composer {
    padding: 12px 14px;
    padding-bottom: calc(12px + env(safe-area-inset-bottom));
  }

  .composer-row {
    gap: 10px;
  }

  #messageInput {
    min-height: 46px;
    padding: 11px 13px;
    font-size: 0.93rem;
  }

  #sendButton {
    width: 48px;
    height: 46px;
  }

  .quick-button {
    padding: 10px 14px;
    font-size: 0.84rem;
  }

  .welcome-box {
    padding: 18px 16px;
    border-radius: 18px;
  }

  .welcome-box h2 {
    font-size: 1.05rem;
  }

  .welcome-box p {
    font-size: 0.9rem;
  }
}

@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-8px); }
}