/* ============================================
   Learnix Support Chat — SupportChat.css
   Theme: Blue · Yellow · Black · White
   Light, clean, no gradients
   ============================================ */

/* ---------- Tokens ---------- */
:root {
  --lx-blue:        #1a6bff;
  --lx-blue-light:  #e8f0fe;
  --lx-yellow:      #f5c400;
  --lx-yellow-soft: #fffbe6;
  --lx-black:       #111111;
  --lx-gray-1:      #f4f5f7;
  --lx-gray-2:      #e4e6ea;
  --lx-gray-3:      #9aa0ab;
  --lx-white:       #ffffff;
  --lx-radius:      14px;
  --lx-radius-sm:   8px;
  --lx-font:        'DM Sans', 'Segoe UI', sans-serif;
}

/* ---------- Page ---------- */
.lx-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lx-gray-1);
  padding: 24px 16px;
  font-family: var(--lx-font);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.lx-page--loaded {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Card ---------- */
.lx-card {
  width: 100%;
  max-width: 680px;
  background: var(--lx-white);
  border: 1.5px solid var(--lx-gray-2);
  border-radius: var(--lx-radius);
  display: flex;
  flex-direction: column;
  /* Fixed height so only messages area scrolls */
  height: 620px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
}

/* ---------- Header ---------- */
.lx-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  flex-shrink: 0;
}

.lx-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lx-header-icon {
  width: 42px;
  height: 42px;
  background: var(--lx-blue);
  color: var(--lx-white);
  border-radius: var(--lx-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.lx-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--lx-black);
  margin: 0;
  letter-spacing: -0.3px;
}

.lx-title-accent {
  color: var(--lx-blue);
}

.lx-subtitle {
  font-size: 12px;
  color: var(--lx-gray-3);
  margin: 2px 0 0;
}

/* Status pill */
.lx-status {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--lx-gray-1);
  border: 1px solid var(--lx-gray-2);
  border-radius: 20px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--lx-black);
}

.lx-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  animation: lx-pulse 2s infinite;
}

@keyframes lx-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

/* ---------- Divider ---------- */
.lx-divider {
  height: 1px;
  background: var(--lx-gray-2);
  flex-shrink: 0;
}

/* ---------- Messages ---------- */
.lx-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  /* Prevent page scroll */
  overscroll-behavior: contain;
}

.lx-messages::-webkit-scrollbar {
  width: 4px;
}
.lx-messages::-webkit-scrollbar-track {
  background: transparent;
}
.lx-messages::-webkit-scrollbar-thumb {
  background: var(--lx-gray-2);
  border-radius: 4px;
}

/* Message row */
.lx-row {
  display: flex;
  align-items: flex-end;
  gap: 9px;
  animation: lx-msg-in 0.22s ease both;
}

.lx-row--user {
  flex-direction: row-reverse;
}

@keyframes lx-msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Avatar */
.lx-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--lx-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.lx-avatar--bot {
  background: var(--lx-blue);
  color: var(--lx-white);
}

.lx-avatar--user {
  background: var(--lx-yellow);
  color: var(--lx-black);
}

/* Bubble */
.lx-bubble {
  max-width: 72%;
  padding: 11px 15px;
  border-radius: var(--lx-radius);
  font-size: 14px;
  line-height: 1.6;
  word-break: break-word;
}

.lx-bubble--bot {
  background: var(--lx-blue-light);
  color: var(--lx-black);
  border-bottom-left-radius: 4px;
}

.lx-bubble--user {
  background: var(--lx-blue);
  color: var(--lx-white);
  border-bottom-right-radius: 4px;
}

/* ---------- Typing indicator ---------- */
.lx-typing {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 13px 18px;
}

.lx-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lx-blue);
  animation: lx-dot 1.2s infinite;
}

.lx-typing span:nth-child(2) { animation-delay: 0.2s; }
.lx-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes lx-dot {
  0%, 80%, 100% { opacity: 0.25; transform: scale(0.85); }
  40%           { opacity: 1;    transform: scale(1); }
}

/* ---------- Footer / Input ---------- */
.lx-footer {
  padding: 14px 22px 16px;
  flex-shrink: 0;
}

.lx-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--lx-gray-1);
  border: 1.5px solid var(--lx-gray-2);
  border-radius: var(--lx-radius-sm);
  padding: 10px 14px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.lx-input-wrap:focus-within {
  border-color: var(--lx-blue);
  box-shadow: 0 0 0 3px rgba(26, 107, 255, 0.1);
}

.lx-input-wrap--disabled {
  opacity: 0.6;
}

.lx-input-icon {
  color: var(--lx-gray-3);
  flex-shrink: 0;
}

.lx-textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--lx-font);
  font-size: 14px;
  color: var(--lx-black);
  line-height: 1.5;
  max-height: 120px;
  overflow-y: auto;
}

.lx-textarea::placeholder {
  color: var(--lx-gray-3);
}

/* Send button */
.lx-send-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--lx-radius-sm);
  background: var(--lx-blue);
  color: var(--lx-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s ease, transform 0.12s ease;
}

.lx-send-btn:hover:not(:disabled) {
  background: #1257d4;
  transform: scale(1.05);
}

.lx-send-btn:active:not(:disabled) {
  transform: scale(0.97);
}

.lx-send-btn:disabled {
  background: var(--lx-gray-2);
  color: var(--lx-gray-3);
  cursor: not-allowed;
}

/* Hint */
.lx-hint {
  font-size: 11px;
  color: var(--lx-gray-3);
  margin: 8px 0 0;
  text-align: center;
}

.lx-hint kbd {
  background: var(--lx-gray-1);
  border: 1px solid var(--lx-gray-2);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 11px;
  font-family: inherit;
  color: var(--lx-black);
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .lx-card {
    height: 100dvh;
    border-radius: 0;
    border: none;
    max-width: 100%;
  }

  .lx-page {
    padding: 0;
    align-items: stretch;
  }

  .lx-header {
    padding: 14px 16px;
  }

  .lx-messages {
    padding: 16px;
  }

  .lx-footer {
    padding: 12px 16px 14px;
  }

  .lx-bubble {
    max-width: 82%;
  }

  .lx-status-label {
    display: none;
  }

  .lx-status {
    padding: 5px 8px;
  }
}