/* ═══════════════════════════════════════════════════════════════
   Lumi — premium AI guide
   Header pill, side drawer, chat surface.
   Uses the site's CSS variables (--accent, --gold, --bg, --fg, --border).
   ═══════════════════════════════════════════════════════════════ */

/* Body scroll lock while drawer is open. */
body.lumi-locked { overflow: hidden; }

/* Local tokens — Lumi-specific colours layered on top of theme variables. */
:root {
  --lumi-navy: #1B2A4A;
  --lumi-navy-deep: #0E1A33;
  --lumi-violet: #3B2A5C;
  --lumi-gold: #C5A55A;
  --lumi-gold-soft: #d8bf85;
  --lumi-glow: rgba(197, 165, 90, 0.35);
  --lumi-edge: rgba(255, 255, 255, 0.18);
  --lumi-edge-strong: rgba(197, 165, 90, 0.55);
  --lumi-shadow: 0 6px 18px -8px rgba(58, 42, 92, 0.55),
                 0 2px 6px -2px rgba(0, 0, 0, 0.18);
  --lumi-shadow-hover: 0 10px 28px -10px rgba(58, 42, 92, 0.7),
                       0 3px 10px -3px rgba(0, 0, 0, 0.25),
                       0 0 0 1px rgba(197, 165, 90, 0.5);
}

[data-theme="dark"] {
  --lumi-shadow: 0 6px 18px -8px rgba(0, 0, 0, 0.6),
                 0 0 0 1px rgba(255, 255, 255, 0.04);
  --lumi-shadow-hover: 0 10px 30px -10px rgba(0, 0, 0, 0.85),
                       0 0 0 1px rgba(216, 191, 133, 0.55);
  --lumi-glow: rgba(216, 191, 133, 0.45);
  --lumi-edge: rgba(255, 255, 255, 0.12);
}

/* ── Header pill button ──────────────────────────────────────── */
.lumi-pill {
  --_pad-y: 7px;
  --_pad-x: 16px;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: var(--_pad-y) var(--_pad-x);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #fff;
  background:
    /* inner highlight */
    linear-gradient(180deg, rgba(255,255,255,.10) 0%, rgba(255,255,255,0) 38%),
    /* base brand sweep */
    linear-gradient(135deg,
      var(--lumi-navy-deep) 0%,
      var(--lumi-navy) 38%,
      var(--lumi-violet) 78%,
      var(--lumi-gold) 140%);
  border: 1px solid var(--lumi-edge-strong);
  border-radius: 999px;
  cursor: pointer;
  user-select: none;
  box-shadow: var(--lumi-shadow), inset 0 1px 0 rgba(255,255,255,.08);
  transition:
    transform .18s cubic-bezier(.2,.7,.2,1),
    box-shadow .25s ease,
    border-color .2s ease;
  isolation: isolate;
  text-decoration: none;
  white-space: nowrap;
}
.lumi-pill__icon {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  color: var(--lumi-gold-soft);
  filter: drop-shadow(0 0 6px var(--lumi-glow));
}
.lumi-pill__label { line-height: 1; }
.lumi-pill__lock {
  width: 12px; height: 12px;
  margin-left: 2px;
  opacity: .85;
}

/* Subtle metallic shimmer on hover via a sweeping highlight overlay. */
.lumi-pill::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    115deg,
    transparent 30%,
    rgba(255, 255, 255, 0.22) 50%,
    transparent 70%
  );
  background-size: 220% 100%;
  background-position: 200% 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, background-position .9s ease;
  z-index: 1;
}
.lumi-pill:hover {
  transform: translateY(-1px);
  box-shadow: var(--lumi-shadow-hover);
  border-color: var(--lumi-gold);
}
.lumi-pill:hover::after {
  opacity: 1;
  background-position: -50% 0;
}
.lumi-pill:active {
  transform: translateY(0) scale(.985);
  transition: transform .08s ease;
}
.lumi-pill:focus-visible {
  outline: 2px solid var(--lumi-gold);
  outline-offset: 3px;
}
.lumi-pill[disabled],
.lumi-pill--locked {
  cursor: not-allowed;
}
.lumi-pill--locked .lumi-pill__icon { opacity: .7; }

/* Tooltip — appears on hover & focus. Custom (not native title="") so we
   can style it to match the brand and read like product copy. */
.lumi-pill__tip {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: max-content;
  max-width: 320px;
  padding: 10px 14px;
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0;
  color: var(--fg);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 10px 28px -8px rgba(0,0,0,.18);
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 102;
  text-align: left;
  white-space: normal;
}
.lumi-pill__tip strong {
  color: var(--accent);
  font-weight: 700;
}
.lumi-pill__tip-list {
  margin-top: 6px;
  padding-left: 14px;
  color: var(--muted);
  font-size: 12px;
}
.lumi-pill__tip-list li { padding: 1px 0; }
.lumi-pill:hover .lumi-pill__tip,
.lumi-pill:focus-visible .lumi-pill__tip {
  opacity: 1;
  transform: translateY(0);
}
@media (max-width: 1080px) {
  .lumi-pill__label { display: none; }
  .lumi-pill { padding: 7px 10px; }
}
@media (max-width: 980px) {
  /* Header version is hidden — mobile entry is in the hamburger menu. */
  .desktop-only.lumi-pill,
  .desktop-only .lumi-pill { display: none; }
}

/* Mobile menu Lumi link — gold-accented row, distinct from regular links. */
.mobile-menu__lumi {
  display: flex !important;
  align-items: center;
  gap: 10px;
  padding: 12px 12px !important;
  font-weight: 600 !important;
  color: var(--lumi-gold) !important;
  background: linear-gradient(135deg,
              rgba(27,42,74,0.06) 0%,
              rgba(197,165,90,0.10) 100%);
  border: 1px solid rgba(197,165,90,0.25);
  border-radius: 10px !important;
  margin: 4px 0;
}
[data-theme="dark"] .mobile-menu__lumi {
  background: linear-gradient(135deg,
              rgba(27,42,74,0.45) 0%,
              rgba(197,165,90,0.18) 100%);
  border-color: rgba(216,191,133,0.35);
  color: var(--lumi-gold-soft) !important;
}
.mobile-menu__lumi-icon {
  width: 16px; height: 16px;
  flex-shrink: 0;
}
.mobile-menu__lumi-badge {
  margin-left: auto;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--lumi-gold), var(--lumi-gold-soft));
  color: #1B2A4A;
}

/* ── Drawer ──────────────────────────────────────────────────── */
.lumi-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 480px;
  height: 100dvh;
  background: var(--bg);
  border-left: 1px solid var(--border);
  box-shadow: -16px 0 48px -16px rgba(0,0,0,.18);
  z-index: 220;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .28s cubic-bezier(.4,0,.2,1);
  visibility: hidden;
}
.lumi-drawer--open {
  transform: translateX(0);
  visibility: visible;
}
@media (max-width: 540px) {
  .lumi-drawer { max-width: 100%; }
}
.lumi-drawer__overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,15,30,.45);
  backdrop-filter: blur(2px);
  z-index: 219;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
}
.lumi-drawer__overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

/* Header */
.lumi-drawer__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(140% 100% at 0% 0%, rgba(27,42,74,0.07), transparent 60%),
    radial-gradient(120% 100% at 100% 0%, rgba(197,165,90,0.07), transparent 70%),
    var(--bg);
}
[data-theme="dark"] .lumi-drawer__header {
  background:
    radial-gradient(140% 100% at 0% 0%, rgba(61,90,138,0.18), transparent 60%),
    radial-gradient(120% 100% at 100% 0%, rgba(216,191,133,0.10), transparent 70%),
    var(--bg);
}
.lumi-drawer__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 1.5px solid var(--lumi-gold);
  box-shadow: 0 0 0 2px rgba(197,165,90,.15), 0 4px 14px -6px rgba(27,42,74,.4);
  background: var(--card);
  object-fit: cover;
}
.lumi-drawer__title-wrap {
  flex: 1;
  min-width: 0;
}
.lumi-drawer__title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin: 0;
}
.lumi-drawer__subtitle {
  margin: 2px 0 0;
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.4;
}
.lumi-drawer__iconbtn,
.lumi-drawer__close {
  width: 34px; height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  color: var(--muted);
  transition: all .15s ease;
  flex-shrink: 0;
}
.lumi-drawer__iconbtn:hover,
.lumi-drawer__close:hover {
  color: var(--fg);
  border-color: var(--accent);
  background: var(--card);
}
.lumi-drawer__iconbtn:focus-visible,
.lumi-drawer__close:focus-visible {
  outline: 2px solid var(--lumi-gold);
  outline-offset: 2px;
}
/* Clear-conversation tilts toward red on hover so the destructive
   intent reads at a glance. */
.lumi-drawer__clearbtn:hover {
  color: #b91c1c;
  border-color: #fca5a5;
  background: rgba(220, 38, 38, 0.06);
}
[data-theme="dark"] .lumi-drawer__clearbtn:hover {
  color: #fca5a5;
  border-color: rgba(220, 38, 38, 0.5);
  background: rgba(220, 38, 38, 0.12);
}

/* Quota chip */
.lumi-drawer__quota {
  font-size: 11px;
  color: var(--muted);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  white-space: nowrap;
}
.lumi-drawer__quota strong { color: var(--fg); font-weight: 700; }
.lumi-drawer__quota--low {
  color: #b8730a;
  border-color: rgba(184, 115, 10, 0.35);
}

/* Body — scrollable transcript */
.lumi-drawer__body {
  flex: 1;
  overflow-y: auto;
  padding: 18px 20px 8px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scroll-behavior: smooth;
}

/* Onboarding card (shown when transcript empty). Toggled via class
   instead of removed from DOM so the "New conversation" button can
   bring it back without HTML re-injection. */
.lumi-onboard--hidden { display: none !important; }

.lumi-onboard {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px 18px 6px;
  border-radius: 14px;
  background: linear-gradient(135deg,
    rgba(27,42,74,0.05) 0%,
    rgba(197,165,90,0.05) 100%);
  border: 1px solid var(--border);
}
[data-theme="dark"] .lumi-onboard {
  background: linear-gradient(135deg,
    rgba(61,90,138,0.18) 0%,
    rgba(216,191,133,0.10) 100%);
}
.lumi-onboard__phrase {
  font-size: 15px;
  font-style: italic;
  line-height: 1.5;
  color: var(--fg);
}
.lumi-onboard__hint {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: -4px;
}

/* Suggested prompt chips */
.lumi-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.lumi-chip {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--fg);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  transition: all .15s ease;
  text-align: left;
  line-height: 1.3;
}
.lumi-chip:hover {
  border-color: var(--lumi-gold);
  color: var(--accent);
  background: var(--bg);
}
.lumi-chip:focus-visible {
  outline: 2px solid var(--lumi-gold);
  outline-offset: 2px;
}

/* Messages */
.lumi-msg {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 100%;
  animation: lumiFadeIn .25s ease;
}
@keyframes lumiFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
.lumi-msg__role {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.lumi-msg__bubble {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--fg);
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.lumi-msg--user .lumi-msg__bubble {
  background: linear-gradient(135deg, var(--lumi-navy) 0%, var(--lumi-violet) 100%);
  color: #fff;
  border-color: rgba(255,255,255,.12);
  align-self: flex-end;
  max-width: 88%;
}
.lumi-msg--user .lumi-msg__role { text-align: right; color: var(--muted); }
.lumi-msg--model .lumi-msg__bubble p { margin: 0 0 8px; }
.lumi-msg--model .lumi-msg__bubble p:last-child { margin-bottom: 0; }
.lumi-msg--model .lumi-msg__bubble a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.lumi-msg--model .lumi-msg__bubble code {
  background: var(--border);
  padding: 1px 4px;
  border-radius: 4px;
  font-size: 13px;
}

/* Thinking state: fills the empty bubble with a pulsing dot + label
   while we wait for the first token or tool result. Replaced as soon as
   content streams in. */
.lumi-msg__bubble--thinking {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-style: italic;
  color: var(--muted);
  font-size: 13.5px;
  align-self: flex-start;
}
.lumi-msg__bubble--thinking::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--lumi-gold);
  box-shadow: 0 0 8px var(--lumi-glow);
  animation: lumiPulse 1.1s ease-in-out infinite;
  flex-shrink: 0;
}

/* Tool indicator (transient) */
.lumi-tool-step {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  padding: 4px 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  align-self: flex-start;
}
.lumi-tool-step::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--lumi-gold);
  box-shadow: 0 0 8px var(--lumi-glow);
  animation: lumiPulse 1.1s ease-in-out infinite;
}
@keyframes lumiPulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.3); }
}

/* Article cards (citations, inline) */
.lumi-cards {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 6px;
}
.lumi-card {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--fg);
  transition: all .15s ease;
}
.lumi-card:hover {
  border-color: var(--lumi-gold);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px -6px rgba(27,42,74,.25);
}
.lumi-card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--lumi-gold);
  margin-bottom: 4px;
}
.lumi-card__meta-sep { color: var(--border); }
.lumi-card__date { color: var(--muted); font-weight: 500; }
.lumi-card__title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--fg);
  margin-bottom: 4px;
}
.lumi-card__dek {
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Footer / composer */
.lumi-drawer__footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding: 12px 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.lumi-composer {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 8px 8px 8px 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.lumi-composer:focus-within {
  border-color: var(--lumi-gold);
  box-shadow: 0 0 0 3px rgba(197,165,90,.18);
}
.lumi-composer__textarea {
  flex: 1;
  min-height: 22px;
  max-height: 160px;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font: inherit;
  font-size: 14.5px;
  line-height: 1.45;
  color: var(--fg);
  padding: 4px 0;
}
.lumi-composer__textarea::placeholder { color: var(--muted); }
.lumi-composer__send {
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--lumi-navy) 0%, var(--lumi-violet) 100%);
  color: #fff;
  border: 1px solid var(--lumi-edge-strong);
  border-radius: 10px;
  cursor: pointer;
  flex-shrink: 0;
  transition: all .15s ease;
  box-shadow: 0 2px 6px -2px rgba(27,42,74,.4);
}
.lumi-composer__send:hover:not([disabled]) {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px -4px rgba(27,42,74,.55);
}
.lumi-composer__send:disabled {
  opacity: .5;
  cursor: not-allowed;
}
.lumi-composer__send svg { width: 16px; height: 16px; }
.lumi-disclaimer {
  font-size: 10.5px;
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.01em;
}

/* Upgrade / sign-up gate (non-Pro users — anon or Free) */
.lumi-gate {
  margin: auto;
  padding: 26px 22px 28px;
  text-align: center;
  max-width: 380px;
}
.lumi-gate__title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin-bottom: 10px;
}
.lumi-gate__body {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 16px;
}
.lumi-gate__body strong { color: var(--accent); font-weight: 700; }
.lumi-gate__list {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  text-align: left;
  display: inline-block;
}
.lumi-gate__list li {
  position: relative;
  padding: 4px 0 4px 22px;
  font-size: 13.5px;
  color: var(--fg);
  line-height: 1.45;
}
.lumi-gate__list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lumi-gold) 0%, var(--lumi-gold-soft) 100%);
  box-shadow: 0 0 8px var(--lumi-glow);
}
.lumi-gate__row {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.lumi-gate__cta {
  display: inline-block;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--lumi-navy) 0%, var(--lumi-violet) 100%);
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid var(--lumi-edge-strong);
  transition: all .2s ease;
  white-space: nowrap;
}
.lumi-gate__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(58,42,92,.5);
}
.lumi-gate__cta--ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}
.lumi-gate__cta--ghost:hover {
  border-color: var(--accent);
  background: var(--card);
  box-shadow: none;
}
.lumi-gate__sub {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}
.lumi-gate__sub a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Error toast inside drawer */
.lumi-toast {
  margin: 0 20px 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: #842c2c;
  background: rgba(220, 38, 38, .08);
  border: 1px solid rgba(220, 38, 38, .25);
  border-radius: 8px;
}
[data-theme="dark"] .lumi-toast {
  color: #f4b4b4;
  background: rgba(220, 38, 38, .14);
}

/* Reduced motion respect */
@media (prefers-reduced-motion: reduce) {
  .lumi-pill,
  .lumi-pill::after,
  .lumi-drawer,
  .lumi-card,
  .lumi-msg { transition: none !important; animation: none !important; }
}