/* ============================================================
   "Ask Naga" chatbot widget — styled to the portfolio's Luminous
   tokens (defined in index.html :root). Namespaced under .naga-*.
   ============================================================ */

.naga {
  --naga-z: 9999;
  position: fixed;
  z-index: var(--naga-z);
  font-family: var(--sans);
}

/* ---------- Launcher ---------- */
.naga-fab {
  position: fixed;
  right: clamp(16px, 4vw, 32px);
  bottom: clamp(16px, 4vw, 32px);
  z-index: var(--naga-z);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 10px 20px 10px 12px;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 6px 6px 0 var(--lime);
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease);
}
.naga-fab:hover,
.naga-fab:focus-visible {
  transform: translateY(-2px);
  box-shadow: 8px 8px 0 var(--lime);
}
.naga-fab__avatar {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  object-fit: cover;
  border: 2px solid var(--lime);
  flex: none;
}
.naga-fab__dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--lime);
  box-shadow: 0 0 0 0 rgba(202, 255, 96, 0.7);
  animation: naga-pulse 2.4s var(--ease) infinite;
}
@keyframes naga-pulse {
  0% { box-shadow: 0 0 0 0 rgba(202, 255, 96, 0.6); }
  70% { box-shadow: 0 0 0 8px rgba(202, 255, 96, 0); }
  100% { box-shadow: 0 0 0 0 rgba(202, 255, 96, 0); }
}
.naga-fab.is-hidden { display: none; }

/* ---------- Panel ---------- */
.naga-panel {
  position: fixed;
  right: clamp(16px, 4vw, 32px);
  bottom: clamp(16px, 4vw, 32px);
  z-index: var(--naga-z);
  width: min(390px, calc(100vw - 32px));
  height: min(640px, calc(100vh - 64px));
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transform-origin: bottom right;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.98);
  pointer-events: none;
  transition: opacity 220ms var(--ease), transform 220ms var(--ease), visibility 0s linear 220ms;
}
.naga-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
  transition: opacity 220ms var(--ease), transform 220ms var(--ease), visibility 0s;
}

/* ---------- Header ---------- */
.naga-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 14px 14px 16px;
  background: var(--paper-2);
  border-bottom: 1.5px solid var(--ink);
}
.naga-head__avatar {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  object-fit: cover;
  border: 2px solid var(--ink);
  flex: none;
}
.naga-head__meta { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.naga-head__name {
  font-weight: 800;
  font-size: 0.98rem;
  color: var(--ink);
}
.naga-head__status {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.naga-head__status::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 999px;
  background: var(--teal);
}
.naga-head__close {
  margin-left: auto;
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition: background 160ms var(--ease), transform 160ms var(--ease);
}
.naga-head__close:hover { background: var(--lime); transform: rotate(90deg); }

/* ---------- Message list ---------- */
.naga-body {
  flex: 1;
  overflow-y: auto;
  padding: 18px 16px 8px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scrollbar-width: thin;
}
.naga-intro {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
}
.naga-intro h4 { margin: 0 0 4px; font-size: 1rem; color: var(--ink); font-weight: 800; }
.naga-intro p { margin: 0; font-size: 0.88rem; color: var(--ink-soft); line-height: 1.55; }

.naga-msg {
  max-width: 86%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.naga-msg.user {
  align-self: flex-end;
  background: var(--ink);
  color: #fff;
  border-bottom-right-radius: 5px;
}
.naga-msg.bot {
  align-self: flex-start;
  background: var(--paper-2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  border-bottom-left-radius: 5px;
}
.naga-msg.bot.is-error {
  border-left-color: var(--coral);
  background: #fbeae4;
}

/* typing indicator */
.naga-typing { display: inline-flex; gap: 5px; padding: 4px 2px; }
.naga-typing span {
  width: 7px; height: 7px; border-radius: 999px;
  background: var(--muted);
  animation: naga-bounce 1.2s var(--ease) infinite;
}
.naga-typing span:nth-child(2) { animation-delay: 0.15s; }
.naga-typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes naga-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-5px); opacity: 1; }
}

/* ---------- Quick prompt chips ---------- */
.naga-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 2px 6px;
}
.naga-chip {
  border: 1.5px solid var(--ink);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 13px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 160ms var(--ease), transform 160ms var(--ease);
}
.naga-chip:hover { background: var(--lime); transform: translateY(-1px); }

/* ---------- Composer ---------- */
.naga-form {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 12px 14px;
  border-top: 1.5px solid var(--ink);
  background: var(--paper-2);
}
.naga-input {
  flex: 1;
  resize: none;
  max-height: 120px;
  min-height: 44px;
  padding: 11px 14px;
  border: 1.5px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.9rem;
  line-height: 1.4;
  outline: none;
  transition: border-color 160ms var(--ease), box-shadow 160ms var(--ease);
}
.naga-input:focus { border-color: var(--ink); box-shadow: 0 0 0 3px rgba(202, 255, 96, 0.55); }
.naga-input::placeholder { color: var(--muted); }
.naga-send {
  flex: none;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--lime);
  cursor: pointer;
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease), opacity 160ms var(--ease);
}
.naga-send:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 4px 4px 0 var(--lime); }
.naga-send:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- Footer disclaimer ---------- */
.naga-foot {
  padding: 0 14px 10px;
  background: var(--paper-2);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  text-align: center;
}

/* ---------- Mobile: bottom sheet ---------- */
@media (max-width: 520px) {
  .naga-panel {
    right: 0; bottom: 0;
    width: 100vw;
    height: 88vh;
    border-radius: 20px 20px 0 0;
    border-bottom: none;
  }
  .naga-fab span.naga-fab__label { display: none; }
  .naga-fab { padding: 10px; }
  /* lock background scroll while the bottom-sheet is open */
  body.naga-lock { overflow: hidden; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .naga-fab, .naga-panel, .naga-send, .naga-chip, .naga-head__close,
  .naga-fab__dot, .naga-typing span { transition: none !important; animation: none !important; }
}