.helper-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 88% 4%, color-mix(in srgb, var(--lime) 23%, transparent), transparent 25%),
    linear-gradient(90deg, transparent 49.9%, color-mix(in srgb, var(--line) 35%, transparent) 50%, transparent 50.1%),
    var(--canvas);
}

.helper-topbar {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  padding: 0 4vw;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.helper-topbar .brand { color: var(--ink); }

.helper-topbar nav {
  display: flex;
  gap: 8px;
}

.helper-topbar nav a {
  padding: 8px 11px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.helper-topbar nav a:hover {
  color: var(--green-dark);
  background: var(--paper);
}

.helper-shell {
  width: min(1280px, 94vw);
  margin: 0 auto;
  padding: 48px 0 70px;
}

.helper-hero {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 30px;
}

.helper-hero h1 {
  margin: 8px 0 0;
  font-family: var(--display);
  font-size: clamp(44px, 5.8vw, 78px);
  font-weight: 450;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.helper-status-card {
  display: grid;
  width: min(100%, 350px);
  grid-template-columns: 12px 1fr;
  gap: 11px;
  align-items: start;
  padding: 15px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 9px;
  box-shadow: var(--shadow);
}

.helper-status-dot {
  width: 9px;
  height: 9px;
  margin-top: 4px;
  background: #d6a342;
  border-radius: 50%;
  box-shadow: 0 0 0 4px color-mix(in srgb, #d6a342 18%, transparent);
}

.helper-status-dot.online {
  background: var(--green);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--green) 18%, transparent);
}

.helper-status-card strong,
.helper-status-card p { display: block; margin: 0; }
.helper-status-card strong { font-size: 10px; }
.helper-status-card p { margin-top: 2px; color: var(--muted); font-size: 9px; line-height: 1.45; }

.helper-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.helper-sidebar,
.helper-chat {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.helper-sidebar {
  align-self: start;
  overflow: hidden;
}

.helper-side-section {
  padding: 19px;
  border-bottom: 1px solid var(--soft-line);
}

.helper-side-section:last-child { border-bottom: 0; }

.helper-course-field span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 750;
}

.helper-course-field select {
  width: 100%;
  min-height: 40px;
  padding: 0 10px;
  color: var(--ink);
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 7px;
}

.helper-context-copy {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.55;
}

.helper-prompts {
  display: grid;
  gap: 7px;
}

.helper-prompts button,
.helper-suggestions button,
.helper-privacy-note button {
  color: var(--green-dark);
  font-size: 9px;
  font-weight: 700;
  text-align: left;
  background: var(--green-soft);
  border: 1px solid color-mix(in srgb, var(--green) 25%, var(--line));
  border-radius: 6px;
  cursor: pointer;
}

.helper-prompts button { padding: 9px 10px; }
.helper-prompts button:hover,
.helper-suggestions button:hover { border-color: var(--green); }

.helper-privacy-note {
  background: var(--canvas);
}

.helper-privacy-note strong { font-size: 10px; }
.helper-privacy-note p { margin: 5px 0 11px; color: var(--muted); font-size: 8px; line-height: 1.55; }
.helper-privacy-note button { padding: 7px 9px; color: var(--muted); background: transparent; border-color: var(--line); }

.helper-chat {
  display: grid;
  min-height: 650px;
  grid-template-rows: auto minmax(300px, 1fr) auto auto;
  overflow: hidden;
}

.helper-chat-heading {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.helper-orb {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  background: var(--nav);
  border-radius: 10px;
}

.helper-orb span {
  width: 14px;
  height: 14px;
  background: var(--lime);
  border-radius: 4px 50% 50%;
  transform: rotate(45deg);
}

.helper-chat-heading h2,
.helper-chat-heading p { margin: 0; }
.helper-chat-heading h2 { font-size: 13px; }
.helper-chat-heading p { color: var(--muted); font-size: 8px; }

.helper-chat-heading > a {
  margin-left: auto;
  padding: 7px 9px;
  color: var(--green-dark);
  font-size: 9px;
  font-weight: 750;
  text-decoration: none;
  background: var(--green-soft);
  border-radius: 6px;
}

.helper-messages {
  display: flex;
  gap: 14px;
  flex-direction: column;
  max-height: 560px;
  padding: 24px;
  overflow-y: auto;
  background:
    linear-gradient(color-mix(in srgb, var(--canvas) 58%, transparent), color-mix(in srgb, var(--canvas) 58%, transparent)),
    var(--paper);
}

.helper-message {
  display: grid;
  max-width: min(78%, 680px);
  gap: 5px;
}

.helper-message.user { align-self: end; }
.helper-message.assistant { align-self: start; }

.helper-message-meta {
  color: var(--muted);
  font-size: 8px;
  font-weight: 700;
}

.helper-message.user .helper-message-meta { text-align: right; }

.helper-message-bubble {
  padding: 12px 14px;
  color: var(--ink);
  font-size: 11px;
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px 11px 11px 11px;
}

.helper-message.user .helper-message-bubble {
  color: white;
  background: var(--green-dark);
  border-color: var(--green-dark);
  border-radius: 11px 4px 11px 11px;
}

.helper-message-source {
  color: var(--muted);
  font-size: 7px;
}

.helper-thinking .helper-message-bubble {
  display: flex;
  gap: 5px;
  align-items: center;
}

.helper-thinking i {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: helperPulse 900ms ease-in-out infinite alternate;
}

.helper-thinking i:nth-child(2) { animation-delay: 180ms; }
.helper-thinking i:nth-child(3) { animation-delay: 360ms; }

@keyframes helperPulse { to { opacity: 0.25; transform: translateY(-3px); } }

.helper-suggestions {
  display: flex;
  gap: 7px;
  padding: 0 18px 12px;
  overflow-x: auto;
}

.helper-suggestions button {
  flex: 0 0 auto;
  padding: 7px 9px;
  background: transparent;
  border-color: var(--line);
}

.helper-composer {
  padding: 14px 18px 17px;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.helper-composer textarea {
  width: 100%;
  min-height: 70px;
  max-height: 190px;
  padding: 12px;
  resize: none;
  color: var(--ink);
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.helper-composer textarea:focus { border-color: var(--green); }

.helper-composer-actions {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 9px;
  color: var(--muted);
  font-size: 8px;
}

.helper-composer-actions > span:nth-child(2) { margin-left: auto; }
.helper-composer-actions .button { min-height: 35px; padding: 7px 14px; }

@media (max-width: 820px) {
  .helper-layout { grid-template-columns: 1fr; }
  .helper-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); }
  .helper-side-section:last-child { grid-column: 1 / -1; }
  .helper-chat { min-height: 620px; }
}

@media (max-width: 600px) {
  .helper-topbar { align-items: flex-start; flex-direction: column; gap: 12px; padding: 16px 5vw; }
  .helper-topbar nav { width: 100%; overflow-x: auto; }
  .helper-shell { width: min(100% - 24px, 720px); padding-top: 32px; }
  .helper-hero { align-items: flex-start; flex-direction: column; }
  .helper-hero h1 { font-size: 44px; }
  .helper-sidebar { grid-template-columns: 1fr; }
  .helper-side-section:last-child { grid-column: auto; }
  .helper-messages { padding: 16px; }
  .helper-message { max-width: 92%; }
  .helper-composer-actions > span:nth-child(2) { display: none; }
  .helper-composer-actions .button { width: auto; margin-left: auto; }
}