:root {
  --bg: #f6f3ec;
  --panel: #fffdf8;
  --ink: #24201a;
  --muted: #706b62;
  --line: #ded7ca;
  --soft-line: #ebe5d9;
  --accent: #0b6b72;
  --accent-dark: #074d52;
  --accent-soft: #e6f3f1;
  --blue: #1f65d6;
  --green: #28784d;
  --danger: #a43d32;
  --shadow: 0 24px 80px rgba(36, 32, 26, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, Manrope, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  padding: 0 16px;
  background: var(--accent);
  color: white;
  cursor: pointer;
}

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

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(11, 107, 114, 0.28);
  outline-offset: 2px;
}

.ghost {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
}

.ghost:hover {
  background: #f2ede2;
}

.compact {
  min-height: 36px;
  padding: 0 12px;
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 44px;
  min-width: 44px;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
}

.icon-button:hover {
  background: #f2ede2;
}

.icon-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.icon-button.small {
  width: 36px;
  min-width: 36px;
  min-height: 36px;
  font-size: 22px;
}

.login-body {
  display: grid;
  place-items: center;
  padding: 20px;
}

.login-shell,
.app-shell {
  width: min(100%, 920px);
  margin: 0 auto;
}

.login-panel {
  width: min(100%, 420px);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.15;
}

h1 {
  font-size: 26px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 17px;
}

.login-form {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

label,
.composer-label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 14px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}

input,
select {
  min-height: 44px;
  padding: 0 12px;
}

textarea {
  min-height: 92px;
  resize: vertical;
  padding: 12px;
}

.form-error {
  margin: 0;
  color: var(--danger);
}

.app-shell {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  padding: 16px;
  gap: 12px;
}

.topbar,
.composer {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px;
}

.brand-block {
  min-width: 0;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.messages {
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px;
}

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

.message.user {
  align-self: flex-end;
  background: var(--accent-soft);
  border-color: #b9d9d5;
}

.message.assistant {
  align-self: flex-start;
}

.message-meta {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
}

.transcript-toggle {
  margin-top: 8px;
  min-height: 36px;
  padding: 0 10px;
}

.composer {
  display: grid;
  gap: 8px;
  padding: 12px;
}

.composer-actions {
  display: grid;
  grid-template-columns: minmax(120px, 180px) auto auto;
  justify-content: end;
  gap: 8px;
}

.status-line {
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(36, 32, 26, 0.36);
}

.modal-backdrop[hidden] {
  display: none;
}

.settings-modal {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  width: min(1120px, 100%);
  max-height: min(860px, 94vh);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 22px 14px;
}

.settings-tabs {
  display: flex;
  gap: 6px;
  padding: 0 22px;
  border-bottom: 1px solid var(--line);
}

.settings-tab {
  min-height: 44px;
  border-radius: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
}

.settings-tab:hover {
  background: #f2ede2;
}

.settings-tab.is-active {
  border-bottom-color: var(--blue);
  color: var(--blue);
}

.settings-body {
  overflow: auto;
  padding: 18px 22px;
}

.settings-panel {
  display: none;
}

.settings-panel.is-active {
  display: block;
}

.settings-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 18px;
}

.settings-box {
  display: grid;
  gap: 14px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fff;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.model-form,
.password-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
  align-items: end;
  padding: 12px;
  border: 1px solid var(--soft-line);
  border-radius: 8px;
  background: #fbf8f1;
}

.model-form[hidden] {
  display: none;
}

.model-form label:nth-child(2) {
  grid-column: span 2;
}

.model-library,
.stage-list,
.stats-list {
  display: grid;
  gap: 8px;
}

.model-row,
.stage-row,
.stats-row {
  display: grid;
  align-items: center;
  gap: 10px;
  min-height: 58px;
  border: 1px solid var(--soft-line);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
}

.model-row {
  grid-template-columns: 42px minmax(0, 1fr) auto auto auto 36px;
}

.model-token {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #e8f3dc;
  color: var(--green);
  font-weight: 700;
  font-size: 13px;
}

.model-main {
  min-width: 0;
}

.model-main strong,
.stage-text strong,
.stats-row strong {
  display: block;
  color: var(--ink);
  font-size: 14px;
}

.model-main span,
.stage-text span,
.stats-row span,
.empty-note {
  display: block;
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 12px;
}

.model-stat,
.model-cost {
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.model-cost {
  color: var(--green);
  font-weight: 700;
}

.stage-row {
  grid-template-columns: minmax(0, 1fr) minmax(200px, 250px);
}

.stage-text {
  min-width: 0;
}

.stats-row {
  grid-template-columns: minmax(0, 1.3fr) repeat(4, minmax(90px, 1fr));
}

.settings-status {
  min-height: 28px;
  margin: 0;
  padding: 0 22px 18px;
  color: var(--muted);
  font-size: 13px;
}

.logout-row {
  margin-top: 12px;
}

@media (max-width: 780px) {
  .app-shell {
    padding: 10px;
  }

  .topbar {
    padding: 12px;
  }

  h1 {
    font-size: 22px;
  }

  .composer-actions,
  .settings-grid,
  .model-form,
  .password-fields {
    grid-template-columns: 1fr;
  }

  .model-form label:nth-child(2) {
    grid-column: auto;
  }

  .model-row,
  .stage-row,
  .stats-row {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .model-token {
    display: none;
  }

  .settings-modal {
    max-height: 96vh;
  }

  .settings-tabs {
    overflow-x: auto;
  }
}