/* =========================
   Light page + Dark Chat Widget
   (scoped variables to chat only)
   ========================= */

/* Keep ROOT light/neutral so it doesn't affect the whole site */
:root {
  --radius: 18px;
  --shadow: 0 18px 55px rgba(0, 0, 0, 0.18);
}

/* Dark theme variables ONLY for the chat widget */
.chat-window,
.chat-button {
  --bg: #0b1220;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-2: rgba(255, 255, 255, 0.12);
  --border: rgba(255, 255, 255, 0.16);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --primary: #6ea8ff;
  --primary-2: #7cf0c5;
  --danger: #ff6b6b;
  --shadow: 0 18px 55px rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

/* Floating Chat Button */
.chat-button {
  position: fixed;
  bottom: 18px;
  right: 18px;
  width: 82px;
  height: 82px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  cursor: pointer;
  z-index: 1001;
  color: #fff;
  font-size: 32px;
  -webkit-user-select: none;
  user-select: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: var(--shadow);
  transition:
    transform 0.18s ease,
    filter 0.18s ease;
}

.chat-button:hover {
  transform: translateY(-2px) scale(1.03);
  filter: brightness(1.05);
}

.chat-button:active {
  transform: translateY(0) scale(0.98);
}

/* Chat Window */
.chat-window {
  position: fixed;
  right: 22px;
  bottom: 102px;
  width: 440px;
  max-width: calc(100vw - 36px);
  height: 620px;
  max-height: calc(100vh - 140px);

  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;

  border-radius: var(--radius);
  border: 1px solid var(--border);

  /* Dark-only inside the chat */
  background:
    radial-gradient(
      600px 400px at 10% 0%,
      rgba(110, 168, 255, 0.18),
      transparent 60%
    ),
    radial-gradient(
      520px 420px at 90% 10%,
      rgba(124, 240, 197, 0.14),
      transparent 60%
    ),
    linear-gradient(180deg, rgba(11, 18, 32, 0.98), rgba(11, 18, 32, 0.92));

  color: var(--text);

  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);

  box-shadow:
    0 25px 70px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.06),
    0 0 40px rgba(110, 168, 255, 0.18);

  transform: translateY(14px) scale(0.98);
  opacity: 0;
  transition:
    transform 0.22s ease,
    opacity 0.22s ease;
}

.chat-window.show {
  display: flex;
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* Header */
.chat-header {
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(
    90deg,
    rgba(110, 168, 255, 0.18),
    rgba(124, 240, 197, 0.1)
  );
}

.chat-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.chat-logo {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #0b1220;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.25);
}

.chat-title {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.chat-title strong {
  color: var(--text);
  font-size: 13.5px;
  line-height: 1.1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-title span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.1;
}

/* Close button */
.chat-header .chat-close {
  margin-left: auto;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition:
    transform 0.15s ease,
    background 0.15s ease;

  line-height: 1;
  padding: 0;
  font-size: 18px;
}

.chat-header .chat-close:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.03);
}

/* Message Area */
#chat-response {
  flex: 1;
  padding: 14px 12px;
  overflow-y: auto;
  scroll-behavior: smooth;

  /* keep it dark, subtle */
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.04));
}

#chat-response::-webkit-scrollbar {
  width: 10px;
}

#chat-response::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  border: 2px solid rgba(0, 0, 0, 0);
  background-clip: padding-box;
}

/* Message rows */
.chat-message {
  display: flex;
  gap: 10px;
  margin: 10px 0;
  align-items: flex-end;
}

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

.chat-message.ai {
  justify-content: flex-start;
}

/* Avatars */
.avatar {
  width: 30px;
  height: 30px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  font-weight: 800;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border);
}

.chat-message.user .avatar {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border: none;
  color: #0b1220;
}

/* Bubbles */
.message-bubble {
  max-width: 78%;
  padding: 10px 12px;
  border-radius: 16px;
  line-height: 1.35;
  font-size: 13.5px;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.chat-message.ai .message-bubble {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border-top-left-radius: 10px;
}

.chat-message.user .message-bubble {
  color: #0b1220;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border: none;
  border-top-right-radius: 10px;
}

.message-bubble a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.message-bubble img {
  max-width: 100%;
  border-radius: 12px;
  margin-top: 8px;
}

/* Typing dots */
.typing {
  display: inline-flex;
  gap: 6px;
  padding: 10px 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.typing span {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  animation: dot 1.2s infinite ease-in-out;
}

.typing span:nth-child(2) {
  animation-delay: 0.15s;
}

.typing span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes dot {
  0%,
  80%,
  100% {
    transform: translateY(0);
    opacity: 0.55;
  }

  40% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

/* Input */
#chat-form {
  padding: 12px;
  display: flex;
  gap: 10px;
  align-items: center;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

#chat-form input {
  flex: 1;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  padding: 0 12px;
  outline: none;
  transition:
    border 0.15s ease,
    background 0.15s ease;
}

#chat-form input::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

#chat-form input:focus {
  border-color: rgba(110, 168, 255, 0.6);
  background: rgba(0, 0, 0, 0.45);
}

#chat-form button {
  height: 44px;
  padding: 0 14px;
  border-radius: 14px;
  border: 0;
  cursor: pointer;
  font-weight: 700;
  color: #0b1220;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.25);
  transition:
    transform 0.15s ease,
    filter 0.15s ease;
}

#chat-form button:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

#chat-form button:active {
  transform: translateY(0);
}

/* Mobile */
@media (max-width: 420px) {
  .chat-window {
    right: 10px;
    bottom: 78px;
    width: calc(100vw - 20px);
    height: min(560px, calc(100vh - 120px));
  }

  .chat-button {
    right: 12px;
    bottom: 12px;
  }
}