/* ------------------------------------------------------------------
   The assistant: a launcher pill and a chat panel, bottom right
   ------------------------------------------------------------------ */

.assistant {
  --assistant-edge: max(1rem, env(safe-area-inset-right, 0px));
  --assistant-bottom: calc(1rem + var(--safe-bottom));
}

.assistant__launcher {
  position: fixed;
  right: var(--assistant-edge);
  bottom: var(--assistant-bottom);
  z-index: 140;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 3rem;
  padding: 0.55rem 1.15rem 0.55rem 0.8rem;
  border: 0;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font: 500 0.92rem/1 var(--font-sans);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.4s var(--ease-out);
}
.assistant__launcher[hidden] { display: none; }
.assistant__launcher .assistant__mark { color: var(--signal); flex: none; }
.assistant__launcher:active { transform: scale(0.97); }
.assistant.is-open .assistant__launcher { display: none; }
@media (hover: hover) { .assistant__launcher:hover { transform: translateY(-2px); } }

.assistant__panel {
  position: fixed;
  right: var(--assistant-edge);
  bottom: var(--assistant-bottom);
  z-index: 140;
  display: flex;
  flex-direction: column;
  width: min(430px, 100vw - 2rem);
  height: min(660px, 100dvh - var(--header-h) - 2rem);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: assistant-in 0.45s var(--ease-out);
}
.assistant__panel[hidden] { display: none; }

@keyframes assistant-in {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
}

.assistant__head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 0.7rem 0.8rem 1.15rem;
  border-bottom: 1px solid var(--rule);
}
.assistant__head > div { flex: 1; min-width: 0; }
.assistant__head .eyebrow { margin: 0; }
.assistant__title {
  margin: 0.2rem 0 0;
  font: 400 var(--step-1)/1.1 var(--font-display);
  letter-spacing: -0.01em;
}
.assistant__title em { color: var(--signal-text); }
.assistant__reset { font-size: var(--step--2); color: var(--muted); }

.assistant__log {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.95rem;
  line-height: 1.55;
}

.assistant__intro p { margin: 0 0 1rem; color: var(--ink-2); }
.assistant__intro[hidden] { display: none; }
.assistant__suggestions { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.assistant__suggestion {
  background: transparent;
  font-family: var(--font-sans);
  font-size: var(--step--1);
  letter-spacing: 0;
  white-space: normal;
  text-align: left;
  cursor: pointer;
}
@media (hover: hover) { .assistant__suggestion:hover { border-color: var(--ink); color: var(--ink); } }

.assistant__message { max-width: 100%; overflow-wrap: anywhere; }
.assistant__message--user {
  align-self: flex-end;
  max-width: 85%;
  padding: 0.55rem 0.9rem;
  border-radius: 1.1rem 1.1rem 0.3rem 1.1rem;
  background: var(--paper-2);
  white-space: pre-wrap;
}
.assistant__message--assistant { align-self: stretch; }
.assistant__message.is-error .assistant__body { color: var(--danger); }

.assistant__body > * { margin: 0 0 0.65rem; }
.assistant__body > :last-child { margin-bottom: 0; }
.assistant__body ul, .assistant__body ol { padding-left: 1.2rem; }
.assistant__body li + li { margin-top: 0.25rem; }
.assistant__body { overflow-wrap: anywhere; }
.assistant__body a { color: inherit; text-underline-offset: 0.18em; }
.assistant__body code {
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
  background: var(--paper-2);
  font: 0.86em var(--font-mono);
}
.assistant__body pre {
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--paper-2);
  overflow-x: auto;
}
.assistant__body pre code { padding: 0; background: none; }

.assistant__cite {
  display: inline-grid;
  place-items: center;
  min-width: 1.15rem;
  height: 1.15rem;
  margin-inline: 0.1rem;
  padding-inline: 0.25rem;
  border-radius: 999px;
  background: var(--paper-3);
  font: 500 0.68rem/1 var(--font-mono);
  text-decoration: none;
  vertical-align: 0.2em;
}
.assistant__body a.assistant__cite { color: var(--ink-2); }

.assistant__sources {
  margin: 0.7rem 0 0;
  padding: 0.6rem 0 0 1.4rem;
  border-top: 1px solid var(--rule);
  font-size: var(--step--2);
  color: var(--muted);
}
.assistant__sources a { color: inherit; text-underline-offset: 0.18em; }

/* The agent's steps: a quiet trail above the answer. */
.assistant__steps {
  margin: 0 0 0.6rem;
  font: var(--step--2)/1.45 var(--font-mono);
  color: var(--muted);
}
.assistant__steps summary {
  width: fit-content;
  cursor: pointer;
  list-style-position: outside;
}
.assistant__steps ol {
  margin: 0.4rem 0 0;
  padding: 0 0 0 0.9rem;
  border-left: 1px solid var(--rule-strong);
  list-style: none;
}
.assistant__steps li + li { margin-top: 0.2rem; }
.assistant__steps.is-working li:last-child { color: var(--ink-2); }
.assistant__steps.is-working li:last-child::after {
  content: " ···";
  color: var(--signal);
  animation: assistant-blink 1.2s ease-in-out infinite;
}

/* Amber dots while the answer has not started. */
.assistant__message.is-pending .assistant__body::after {
  content: "···";
  color: var(--signal);
  font: 600 1.4rem/1 var(--font-mono);
  letter-spacing: 0.12em;
  animation: assistant-blink 1.2s ease-in-out infinite;
}
@keyframes assistant-blink { 50% { opacity: 0.3; } }

.assistant__form {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  padding: 0.7rem 0.7rem 0.7rem 1rem;
  border-top: 1px solid var(--rule);
}
.assistant__input {
  flex: 1;
  min-height: 2.75rem;
  max-height: 10rem;
  padding: 0.65rem 0.2rem;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: 1rem/1.4 var(--font-sans);
  resize: none;
}
.assistant__input:focus { outline: none; }
.assistant__form:focus-within { box-shadow: inset 0 2px 0 var(--signal); }
.assistant__send {
  display: grid;
  place-items: center;
  flex: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 0;
  border-radius: 50%;
  background: var(--signal);
  color: var(--signal-ink);
  cursor: pointer;
}
.assistant__send .icon { width: 1.15rem; height: 1.15rem; }
.assistant__send:disabled { opacity: 0.5; cursor: progress; }

/* Phones: the panel takes the whole screen. */
@media (max-width: 600px) {
  .assistant__launcher span { font-size: 0.88rem; }
  .assistant__panel {
    inset: 0;
    width: auto;
    height: 100dvh;
    padding: var(--safe-top) 0 var(--safe-bottom);
    border: 0;
    border-radius: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .assistant__panel, .assistant__message.is-pending .assistant__body::after,
  .assistant__steps.is-working li:last-child::after { animation: none; }
}

@media print { .assistant { display: none; } }