:root {
  --frd-black: #050505;
  --frd-panel: #101617;
  --frd-panel-soft: #141d1f;
  --frd-teal: #123b40;
  --frd-teal-light: #1b555c;
  --frd-border: #f2f2f0;
  --frd-muted-border: rgba(242, 242, 240, 0.16);
  --frd-text: #f7f7f3;
  --frd-muted: #aeb9b8;
  --frd-soft: #d8dfdd;
  --frd-danger: #ff9b9b;
  --frd-warning-bg: rgba(255, 212, 102, 0.12);
  --frd-warning-border: rgba(255, 212, 102, 0.35);
  --frd-gap-bg: rgba(255, 130, 130, 0.10);
  --frd-gap-border: rgba(255, 130, 130, 0.35);
  --frd-radius: 14px;
  --frd-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 32px;
  max-width: 1280px;
  background:
    radial-gradient(circle at top left, rgba(18, 59, 64, 0.55), transparent 36rem),
    linear-gradient(180deg, #050505 0%, #0a0d0e 100%);
  color: var(--frd-text);
}

.app-header {
  margin-bottom: 28px;
  padding: 22px 24px;
  border: 2px solid var(--frd-border);
  border-radius: var(--frd-radius);
  background:
    linear-gradient(135deg, rgba(18, 59, 64, 0.92), rgba(16, 22, 23, 0.95)),
    var(--frd-panel);
  box-shadow: var(--frd-shadow);
}

.brand {
  display: flex;
  gap: 16px;
  align-items: center;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

h1 {
  margin: 0 0 6px 0;
  font-size: 28px;
  letter-spacing: -0.03em;
}

h2 {
  margin-top: 0;
  color: var(--frd-text);
  letter-spacing: -0.02em;
}

h3 {
  margin-bottom: 8px;
  color: var(--frd-soft);
}

input,
textarea,
button,
select {
  font-size: 16px;
  padding: 10px 12px;
  margin: 6px 0;
  width: 100%;
  box-sizing: border-box;
  border-radius: 10px;
  border: 1px solid var(--frd-muted-border);
}

input,
textarea,
select {
  background: rgba(255, 255, 255, 0.05);
  color: var(--frd-text);
  outline: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--frd-border);
  box-shadow: 0 0 0 3px rgba(242, 242, 240, 0.08);
}

input::placeholder,
textarea::placeholder {
  color: var(--frd-muted);
}

select option {
  background: var(--frd-panel);
  color: var(--frd-text);
}

input[type="checkbox"] {
  width: auto;
  accent-color: var(--frd-teal-light);
}

button {
  cursor: pointer;
  background: var(--frd-teal);
  color: var(--frd-text);
  border: 1px solid var(--frd-border);
  font-weight: 700;
  transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}

button:hover {
  background: var(--frd-teal-light);
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

a {
  color: #d7ffff;
}

label {
  display: block;
  margin-top: 8px;
  color: var(--frd-soft);
  font-weight: 700;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.box {
  border: 1px solid var(--frd-muted-border);
  padding: 20px;
  margin-bottom: 25px;
  border-radius: var(--frd-radius);
  background:
    linear-gradient(180deg, rgba(20, 29, 31, 0.96), rgba(10, 13, 14, 0.96)),
    var(--frd-panel);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
}

.answer {
  white-space: pre-wrap;
  background: rgba(255, 255, 255, 0.055);
  padding: 15px;
  border-radius: 10px;
  border: 1px solid var(--frd-muted-border);
  color: var(--frd-text);
}

.small {
  color: var(--frd-muted);
  font-size: 14px;
}

.source {
  border-left: 4px solid var(--frd-border);
  padding-left: 12px;
  margin: 12px 0;
}

.quote {
  white-space: pre-wrap;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--frd-muted-border);
  padding: 10px;
  border-radius: 8px;
  color: var(--frd-soft);
}

.warning {
  background: var(--frd-warning-bg);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--frd-warning-border);
}

.gap {
  background: var(--frd-gap-bg);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--frd-gap-border);
  margin: 8px 0;
}

.msg {
  border-bottom: 1px solid var(--frd-muted-border);
  padding: 10px 0;
}

.msg-user {
  font-weight: bold;
  color: var(--frd-text);
}

.msg-assistant {
  color: var(--frd-soft);
}

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

.row button {
  width: auto;
}

.pill {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(242, 242, 240, 0.12);
  border: 1px solid var(--frd-muted-border);
  border-radius: 999px;
  font-size: 12px;
  margin-left: 6px;
  color: var(--frd-soft);
}

.success {
  color: #8de8a2;
}

.error {
  color: var(--frd-danger);
}

table {
  width: 100%;
  border-collapse: collapse;
  color: var(--frd-text);
}

th,
td {
  border-bottom: 1px solid var(--frd-muted-border);
  padding: 9px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--frd-soft);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.025);
}

.actions {
  min-width: 220px;
}

.actions button {
  margin: 2px 0;
  padding: 8px 10px;
  font-size: 14px;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--frd-soft);
}

details summary {
  cursor: pointer;
  color: var(--frd-soft);
}

#authBox {
  border-color: var(--frd-border);
}

#feedback button {
  width: auto;
  min-width: 120px;
}

@media (max-width: 980px) {
  body {
    height: 100dvh;
    overflow: hidden;
  }

  .app-shell {
    grid-template-columns: 1fr;
    height: 100dvh;
  }

  .chat-sidebar {
    position: fixed;
    z-index: 60;
    top: 0;
    left: 0;
    width: min(86vw, 340px);
    height: 100dvh;
    transform: translateX(-105%);
    transition: transform 0.18s ease;
    box-shadow: 18px 0 50px rgba(0, 0, 0, 0.55);
  }

  .chat-sidebar.open {
    transform: translateX(0);
  }

  .sidebar-header {
    padding: 14px;
  }

  .sidebar-brand h1 {
    font-size: 16px;
  }

  .conversation-list {
    padding-bottom: 24px;
  }

  .mobile-menu-button {
    display: inline-flex;
  }

  .chat-main {
    height: 100dvh;
    min-height: 0;
  }

  .chat-topbar {
    height: auto;
    min-height: 62px;
    padding: 10px 12px;
    gap: 10px;
  }

  .topbar-title h2 {
    font-size: 16px;
  }

  .topbar-title .small {
    display: none;
  }

  .topbar-actions {
    min-width: 0;
  }

  .icon-button {
    width: 42px;
    min-width: 42px;
    height: 42px;
  }

  .chat-scroll {
    padding: 14px;
    min-height: 0;
  }

  .chat-empty {
    margin: 8vh auto 0 auto;
    padding: 0 10px;
  }

  .chat-empty img {
    width: 56px;
    height: 56px;
  }

  .chat-empty h2 {
    font-size: 24px;
  }

  .chat-message {
    grid-template-columns: 34px 1fr;
    gap: 9px;
    margin-bottom: 12px;
  }

  .avatar {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    font-size: 13px;
  }

  .message-card {
    padding: 12px;
    border-radius: 12px;
    font-size: 15px;
    overflow-wrap: anywhere;
  }

  .answer-panels {
    margin-top: 12px;
  }

  .panel-section {
    padding: 12px;
    overflow-x: auto;
  }

  .chat-composer {
    padding: 10px;
    padding-bottom: calc(10px + env(safe-area-inset-bottom));
  }

  .composer-inner {
    border-radius: 14px;
    padding: 10px;
  }

  .composer-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .composer-row textarea {
    min-height: 72px;
    font-size: 16px;
  }

  .composer-row select,
  .composer-row button {
    width: 100%;
  }

  .admin-overlay {
    z-index: 80;
  }

  .admin-panel {
    width: 100vw;
    height: 100dvh;
    padding: 14px;
    border-left: none;
    overflow-x: hidden;
  }

  .admin-header {
    position: sticky;
    top: 0;
    z-index: 2;
    background:
      linear-gradient(180deg, rgba(16, 22, 23, 0.98), rgba(16, 22, 23, 0.94)),
      var(--frd-panel);
    padding: 0 0 12px 0;
    margin-bottom: 14px;
  }

  .admin-header h2 {
    font-size: 20px;
  }

  .admin-close {
    min-width: 88px;
    width: auto;
  }

  .admin-two-col {
    grid-template-columns: 1fr;
  }

  .box {
    padding: 14px;
    margin-bottom: 16px;
    border-radius: 12px;
  }

  input,
  textarea,
  button,
  select {
    font-size: 16px;
  }

  button {
    min-height: 42px;
  }

  table {
    min-width: 760px;
  }

  .box:has(table),
  #documents,
  #dashboard,
  .source,
  .quote {
    overflow-x: auto;
  }

  .actions {
    min-width: 180px;
  }

  .actions button {
    font-size: 13px;
    padding: 8px;
  }

  pre {
    max-width: 100%;
    overflow-x: auto;
  }
}


.mobile-sidebar-backdrop {
  display: none;
}

.mobile-sidebar-backdrop.open {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 55;
  background: rgba(0, 0, 0, 0.62);
}


@media (max-width: 520px) {
  .chat-topbar {
    align-items: flex-start;
  }

  .topbar-title h2 {
    max-width: 62vw;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .chat-scroll {
    padding: 10px;
  }

  .chat-message {
    grid-template-columns: 1fr;
  }

  .avatar {
    display: none;
  }

  .message-card {
    font-size: 14px;
  }

  .panel-section h3 {
    font-size: 16px;
  }

  .admin-header {
    flex-direction: column;
  }

  .admin-close {
    width: 100%;
  }

  .row {
    align-items: flex-start;
  }

  .row span {
    line-height: 1.35;
  }
}