/* ══════════════════════════════════════════════════════════════
   Sifter Lens — lens.css
   Extends ../styles.css — inherits all design tokens.
   Colours / fonts / spacing match the main Sifter Research site.
   ══════════════════════════════════════════════════════════════ */

/* ── Nav active state for Lens link ── */
.nav-center a.nav-active {
  color: var(--ink);
  border-bottom-color: var(--gold);
}

/* ── Hero ── */
.lens-hero {
  border-bottom: 1px solid var(--rule-mid);
  background: var(--paper);
  text-align: justify;
}

.lens-hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px 48px 52px;
}

.lens-hero-title {
  font-family: var(--serif);
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.015em;
  margin-top: 10px;
  margin-bottom: 18px;
  color: var(--ink);
}

.lens-hero-title em {
  font-style: italic;
  color: var(--ink-mid);
}

.lens-hero-sub {
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 52ch;
}

.lens-hero-disclaimer {
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 52ch;
  margin-top: 0;
}

/* Gold rule bar */
.lens-rule-bar {
  height: 2px;
  background: linear-gradient(to right, var(--gold), transparent 70%);
}

/* ── Tool wrapper ── */
.lens-tool-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 52px 48px 80px;
  min-height: 360px;
}

/* ── Tabs ── */
.lens-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--rule-mid);
  margin-bottom: 32px;
}

.lens-tab {
  padding: 10px 20px;
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color 150ms, border-color 150ms;
}

.lens-tab:hover { color: var(--ink); }

.lens-tab--active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ── Mode panels ── */
.lens-mode { animation: lensReveal 0.2s ease; }
.lens-mode--hidden { display: none; }

/* ── Ticker input ── */
.lens-ticker-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.lens-ticker-input {
  flex: 1;
  height: 52px;
  padding: 0 18px;
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--paper-off);
  border: 1px solid var(--rule-mid);
  border-radius: 1px;
  outline: none;
  text-transform: uppercase;
  transition: border-color 150ms, box-shadow 150ms;
  -webkit-appearance: none;
}

.lens-ticker-input::placeholder {
  color: var(--ink-ghost);
  font-weight: 300;
  font-size: 0.9rem;
  letter-spacing: 0;
  text-transform: none;
}

.lens-ticker-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-pale);
}

.lens-submit-btn {
  height: 52px;
  padding: 0 24px;
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 1px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 150ms, color 150ms;
  flex-shrink: 0;
}

.lens-submit-btn:hover {
  background: var(--gold);
  border-color: var(--gold);
}

.lens-submit-btn:active { transform: translateY(1px); }
.lens-submit-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.lens-examples {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.lens-examples span {
  color: var(--gold);
  cursor: pointer;
  margin-left: 6px;
  transition: color 150ms;
}

.lens-examples span:hover { color: var(--ink); }

.lens-note {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: var(--ink-ghost);
  line-height: 1.6;
}

/* ── Dropzone ── */
.lens-dropzone {
  border: 1px dashed var(--ink-ghost);
  border-radius: 1px;
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  background: var(--paper-off);
  transition: border-color 150ms, background 150ms;
  user-select: none;
}

.lens-dropzone:hover,
.lens-dropzone.drag-over {
  border-color: var(--gold);
  background: var(--gold-pale);
}

.lens-dropzone-icon {
  font-size: 28px;
  margin-bottom: 10px;
  color: var(--ink-ghost);
  font-family: var(--mono);
}

.lens-dropzone-primary {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 4px;
}

.lens-dropzone-secondary {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.lens-dropzone-selected {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
}

.lens-dropzone-check {
  font-size: 18px;
  color: var(--gold);
}

.lens-dropzone-filename {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink);
  font-weight: 500;
}

.lens-dropzone-remove {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  text-decoration: underline;
  background: none;
  border: none;
  cursor: pointer;
  transition: color 150ms;
}

.lens-dropzone-remove:hover { color: var(--ink); }

/* PDF row */
.lens-pdf-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.lens-optional-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  white-space: nowrap;
}

.lens-pdf-ticker {
  flex: 1;
  min-width: 120px;
  max-width: 200px;
  height: 40px;
  padding: 0 12px;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--paper-off);
  border: 1px solid var(--rule-mid);
  border-radius: 1px;
  outline: none;
  text-transform: uppercase;
  transition: border-color 150ms;
}

.lens-pdf-ticker:focus { border-color: var(--gold); }

.lens-pdf-row .lens-submit-btn { height: 40px; }

/* Error */
.lens-error {
  margin-top: 20px;
  padding: 14px 16px;
  border-left: 3px solid #C62828;
  background: #FFF5F5;
  font-family: var(--mono);
  font-size: 0.70rem;
  letter-spacing: 0.04em;
  color: #C62828;
  line-height: 1.6;
}

/* ── Loading ── */
.lens-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 80px 0;
}

.lens-loading-dots {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.lens-loading-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  animation: lensDotsAnim 1.4s ease-in-out infinite;
}

.lens-loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.lens-loading-dots span:nth-child(3) { animation-delay: 0.4s; }

.lens-loading-step {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  text-align: center;
  min-height: 18px;
}

.lens-loading-bar {
  margin-top: 22px;
  width: 180px;
  height: 2px;
  background: var(--rule-mid);
}

.lens-loading-bar-fill {
  height: 100%;
  background: var(--gold);
  transition: width 0.7s ease;
}

/* ── Output ── */
.lens-output { animation: lensReveal 0.45s ease; }

.lens-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-faint);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-bottom: 28px;
  transition: color 150ms;
}

.lens-back:hover { color: var(--gold); }

/* Company header */
.lens-company-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 6px;
}

.lens-company-name {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 400;
  line-height: 1.05;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.lens-company-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  margin-bottom: 4px;
}

.lens-ticker-tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold);
  background: var(--gold-pale);
  padding: 2px 8px;
  border-radius: 1px;
}

.lens-meta-item {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.lens-cached-tag {
  font-family: var(--mono);
  font-size: 0.60rem;
  letter-spacing: 0.10em;
  color: var(--ink-ghost);
  text-transform: uppercase;
}

/* Confidence */
.lens-confidence {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 1px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 4px;
}

.lens-confidence::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.lens-confidence--high   { background: #F0FAF0; color: #2E7D32; }
.lens-confidence--medium { background: #FFF8E1; color: #E65100; }
.lens-confidence--low    { background: #FFF5F5; color: #C62828; }

/* ── Metrics bar ── */
.lens-metrics {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--rule-mid);
  border: 1px solid var(--rule-mid);
  margin: 16px 0;
}

.lens-metric-cell {
  background: var(--paper-off);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.lens-metric-label {
  font-family: var(--mono);
  font-size: 0.54rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.lens-metric-value {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lens-metric-value--na { color: var(--ink-ghost); }

/* ── Divider ── */
.lens-divider {
  height: 1px;
  background: linear-gradient(to right, var(--gold-line), transparent 80%);
  margin: 28px 0;
}

/* ── Flags ── */
.lens-flags-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.lens-flags-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.60rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

.lens-flag-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.lens-flag-dot--red   { background: #C62828; }
.lens-flag-dot--green { background: #2E7D32; }

.lens-flags-count {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--ink-faint);
  background: var(--paper-deep);
  padding: 2px 8px;
  border-radius: 10px;
}

/* Flag item */
.lens-flag-item {
  border-left: 2px solid;
  margin-bottom: 4px;
  overflow: hidden;
}

.lens-flag-item.red   { border-color: #E57373; }
.lens-flag-item.green { border-color: #66BB6A; }

.lens-flag-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 14px;
  cursor: pointer;
  transition: background 150ms;
}

.lens-flag-item.red .lens-flag-header:hover   { background: rgba(198, 40, 40, 0.04); }
.lens-flag-item.green .lens-flag-header:hover { background: rgba(46, 125, 50, 0.04); }

.lens-flag-title {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.3;
  flex: 1;
}

.lens-flag-chevron {
  font-family: var(--mono);
  font-size: 0.60rem;
  color: var(--ink-ghost);
  transition: transform 200ms;
  flex-shrink: 0;
}

.lens-flag-chevron.open { transform: rotate(180deg); }

.lens-flag-body {
  padding: 0 14px 12px 14px;
  animation: lensReveal 0.18s ease;
  text-align: justify;
}

.lens-flag-detail {
  font-family: var(--serif);
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 8px;
  text-align: justify;
}

.lens-flag-citation {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  padding: 6px 10px;
  border-left: 1.5px solid var(--rule-mid);
  line-height: 1.55;
  font-style: italic;
  background: var(--paper-off);
}

/* ── Verdict ── */
.lens-verdict { padding: 4px 0 28px; }

.lens-verdict-label {
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 14px;
}

.lens-verdict-text {
  font-family: var(--serif);
  font-size: 0.92rem;
  font-style: normal;
  line-height: 1.65;
  color: var(--ink-soft);
  text-align: justify;
}

/* ── Share ── */
.lens-share {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 20px;
}

.lens-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-family: var(--mono);
  font-size: 0.60rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--rule-mid);
  border-radius: 1px;
  color: var(--ink-soft);
  background: var(--paper-off);
  cursor: pointer;
  transition: border-color 150ms, color 150ms, background 150ms;
}

.lens-share-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-pale);
}

.lens-share-btn.copied {
  border-color: #66BB6A;
  color: #2E7D32;
  background: #F0FAF0;
}

/* Disclaimer */
.lens-disclaimer {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.04em;
  color: var(--ink-ghost);
  line-height: 1.65;
}

/* ── How It Works section ── */
.lens-how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--rule-mid);
  margin-top: 32px;
}

.lens-how-step {
  padding: 32px 28px;
  border-right: 1px solid var(--rule-mid);
}

.lens-how-step:last-child { border-right: none; }

.lens-how-num {
  display: block;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  margin-bottom: 10px;
}

.lens-how-title {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 10px;
}

.lens-how-body {
  font-family: var(--serif);
  font-size: 0.90rem;
  line-height: 1.70;
  color: var(--ink-soft);
  text-align: justify;
}

.lens-note-box {
  margin-top: 28px;
  padding: 20px 24px;
  border-left: 2px solid var(--gold-line);
  background: var(--paper-off);
}

.lens-note-box p {
  font-family: var(--serif);
  font-size: 0.92rem;
  font-style: italic;
  line-height: 1.70;
  color: var(--ink-soft);
  text-align: justify;
}

.lens-note-box strong {
  font-style: normal;
  color: var(--ink);
}

/* ── Powered by strip ── */
.lens-powered-by {
  font-family: var(--mono);
  font-size: 0.54rem;
  letter-spacing: 0.08em;
  color: var(--ink-ghost);
  text-align: center;
  padding: 14px 0 4px;
  text-transform: uppercase;
}

.lens-powered-by a {
  color: var(--gold);
  text-decoration: none;
  transition: color 150ms;
}

.lens-powered-by a:hover { color: var(--ink); }

/* ── Print / PDF export ── */
@media print {
  body { padding-top: 0; background: white; }
  body::before { display: none; }
  .nav, .lens-hero, .lens-rule-bar, .lens-back,
  .lens-share, .lens-powered-by, #about-lens, .footer,
  .nav-mobile-overlay { display: none !important; }
  .lens-tool-wrap { padding: 20px; max-width: 100%; }
  .lens-output { page-break-inside: avoid; }
  .lens-flag-body { display: block !important; }
  .lens-flag-chevron { display: none; }
  .lens-disclaimer { margin-top: 20px; }
}

/* ── Animations ── */
@keyframes lensReveal {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

@keyframes lensDotsAnim {
  0%, 100% { opacity: 0.25; transform: scale(0.75); }
  50%       { opacity: 1;    transform: scale(1.15); }
}

/* ── Responsive ── */
@media (max-width: 740px) {
  .lens-hero-inner  { padding: 44px 20px 40px; }
  .lens-tool-wrap   { padding: 40px 20px 60px; }
  .lens-ticker-row  { flex-direction: column; }
  .lens-submit-btn  { width: 100%; justify-content: center; }
  .lens-metrics     { grid-template-columns: repeat(3, 1fr); }
  .lens-company-header { flex-direction: column; gap: 8px; }
  .lens-how-grid    { grid-template-columns: 1fr; }
  .lens-how-step    { border-right: none; border-bottom: 1px solid var(--rule-mid); }
  .lens-how-step:last-child { border-bottom: none; }
  .lens-pdf-row     { flex-wrap: wrap; }
  .lens-pdf-ticker  { max-width: 100%; }
}

@media (max-width: 420px) {
  .lens-metrics { grid-template-columns: repeat(2, 1fr); }
}

/* ── Reports cross-link grid ── */
.lens-reports-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--rule);
  margin-top: 0;
}

.lens-report-link {
  display: flex;
  flex-direction: column;
  padding: 20px 22px;
  border-right: 1px solid var(--rule);
  text-decoration: none;
  transition: background 150ms;
}

.lens-report-link:last-child { border-right: none; }

.lens-report-link:hover { background: var(--paper-off); }

.lens-report-ticker {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.10em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.lens-report-name {
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.3;
}

@media (max-width: 740px) {
  .lens-reports-grid { grid-template-columns: repeat(2, 1fr); }
  .lens-report-link { border-bottom: 1px solid var(--rule); }
  .lens-report-link:nth-child(2n) { border-right: none; }
  .lens-report-link:nth-last-child(-n+2) { border-bottom: none; }
}

@media (max-width: 480px) {
  .lens-reports-grid { grid-template-columns: 1fr; }
  .lens-report-link { border-right: none; border-bottom: 1px solid var(--rule); }
  .lens-report-link:last-child { border-bottom: none; }
}