:root {
  color-scheme: light;
  --bg: #f4f7f8;
  --panel: #ffffff;
  --ink: #15191d;
  --muted: #5b6872;
  --line: #d7e0e6;
  --primary: #13786f;
  --primary-dark: #0f5d56;
  --danger: #b3444b;
  --success: #1f7a4d;
  --warn: #916e00;
  --code: #101820;
  --assistant: #eef5f3;
  --user: #e8eef2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(19, 120, 111, 0.08), transparent 28%),
    linear-gradient(180deg, #f8fbfb 0%, var(--bg) 100%);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

main {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 34px;
}

header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: end;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

h1 {
  margin: 0 0 5px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.08;
}

h2 {
  margin: 0 0 12px;
  font-size: 17px;
}

p {
  margin: 0;
  color: var(--muted);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95em;
}

a {
  color: inherit;
  text-decoration: none;
}

.status {
  min-width: 210px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  text-align: center;
  font-size: 14px;
}

.status.ok {
  color: var(--success);
  border-color: color-mix(in srgb, var(--success), white 70%);
}

.status.fail {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger), white 68%);
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.top-nav a {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--muted);
  font-weight: 700;
}

.top-nav a.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.layout {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.side,
.chat,
section,
.hero-card,
.portal-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.side {
  display: grid;
  gap: 1px;
  overflow: hidden;
}

section {
  padding: 15px;
  border-width: 0 0 1px;
  border-radius: 0;
}

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

label {
  display: grid;
  gap: 5px;
  margin-bottom: 10px;
  font-weight: 650;
  font-size: 13px;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
  background: #fbfcfd;
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 72px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus,
button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary), transparent 72%);
  outline-offset: 2px;
}

.hint {
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

button {
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 12px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button.primary {
  background: var(--primary);
  color: #fff;
}

button.primary:hover {
  background: var(--primary-dark);
}

button.secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

button.secondary:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.chat {
  display: grid;
  grid-template-rows: auto minmax(360px, calc(100vh - 310px)) auto;
  min-height: 620px;
  overflow: hidden;
}

.chat-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 14px 15px;
  border-bottom: 1px solid var(--line);
}

.chat-title {
  display: grid;
  gap: 2px;
}

.chat-title strong {
  font-size: 16px;
}

.meta {
  color: var(--muted);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.messages {
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: auto;
  padding: 16px;
  background: #f9fbfb;
}

.message {
  width: min(760px, 92%);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.message.user {
  align-self: flex-end;
  background: var(--user);
}

.message.assistant {
  align-self: flex-start;
  background: var(--assistant);
}

.message.system {
  align-self: center;
  width: min(760px, 100%);
  background: #fff;
  color: var(--muted);
  font-size: 13px;
}

.message.error {
  border-color: color-mix(in srgb, var(--danger), white 65%);
  color: var(--danger);
}

.message .reasoning {
  margin: 0 0 8px;
  padding: 8px 10px;
  border-radius: 6px;
  background: #f0eaff;
  color: #4a3580;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.message .reasoning summary {
  cursor: pointer;
  font-weight: 650;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #6b52ae;
}

.message .tool-block {
  margin: 6px 0;
  padding: 8px 10px;
  border-radius: 6px;
  background: #eef0f5;
  font-size: 13px;
}

.message .tool-block .tool-header {
  font-weight: 650;
  font-size: 12px;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.message .tool-block .tool-detail {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--muted);
  max-height: 120px;
  overflow: auto;
}

.message .tool-block .tool-result {
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid var(--line);
}

.message .tool-block.tool-error .tool-header {
  color: var(--danger);
}

.composer {
  display: grid;
  gap: 10px;
  padding: 14px 15px;
  border-top: 1px solid var(--line);
}

.composer-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: end;
}

.small-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.list {
  display: grid;
  gap: 7px;
  max-height: 190px;
  overflow: auto;
  margin-top: 10px;
}

.list-item {
  display: grid;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: #fbfcfd;
  text-align: left;
  color: var(--ink);
}

.list-item.active {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary), white 92%);
}

.raw {
  min-height: 94px;
  max-height: 240px;
  overflow: auto;
  margin: 0;
  border-radius: 8px;
  padding: 10px;
  background: var(--code);
  color: #eef4f6;
  font: 12px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.portal {
  display: grid;
  gap: 16px;
}

.hero-card {
  padding: 24px;
  display: grid;
  gap: 10px;
}

.hero-card strong {
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.12;
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.portal-card {
  padding: 20px;
  display: grid;
  gap: 10px;
}

.portal-card strong {
  font-size: 20px;
}

.portal-card .card-link {
  display: inline-flex;
  width: fit-content;
  margin-top: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}

.portal-card.marketplace {
  background:
    linear-gradient(135deg, rgba(19, 120, 111, 0.1), rgba(255, 255, 255, 1) 55%),
    #fff;
}

.portal-card.session {
  background:
    linear-gradient(135deg, rgba(16, 24, 32, 0.08), rgba(255, 255, 255, 1) 55%),
    #fff;
}

@media (max-width: 920px) {
  header,
  .layout,
  .composer-row,
  .small-grid,
  .portal-grid {
    grid-template-columns: 1fr;
  }

  .chat {
    min-height: 560px;
    grid-template-rows: auto 420px auto;
  }

  .status {
    text-align: left;
  }
}