/* ============================================
   Meridian Landing Page — style.css
   Vibe: dark editorial, warm amber accent,
   Instrument Serif headings + Space Grotesk body
   ============================================ */

:root {
  --bg: #0b0b0b;
  --bg-raised: #111111;
  --bg-card: #161616;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.15);
  --text: #e8e3d9;
  --text-muted: #8a857d;
  --text-faint: #4a4540;
  --accent: #f59e0b;
  --accent-hover: #fbbf24;
  --accent-dim: rgba(245,158,11,0.12);
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Space Grotesk', 'Helvetica Neue', sans-serif;
  --max-width: 1080px;
  --radius: 2px;
  --radius-lg: 6px;
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; }

/* ---- LAYOUT ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- NAV ---- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(11,11,11,0.8);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--text);
}
.nav-cta {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}
.nav-cta:hover { color: var(--accent-hover); }

/* ---- HERO ---- */
.hero {
  position: relative;
  padding: 140px 0 100px;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
}
.hero-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  opacity: 0.6;
  pointer-events: none;
}
.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }

.hero-eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px; height: 1px;
  background: var(--accent);
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 88px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 28px;
  max-width: 720px;
}
.hero-headline em {
  font-style: italic;
  color: var(--accent);
}
.hero-subhead {
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 44px;
  font-weight: 300;
}
.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #0b0b0b;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 14px 28px;
  border-radius: var(--radius);
  transition: background 0.2s, transform 0.15s;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}
.hero-social-proof {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
}
.avatars {
  display: flex;
  gap: -4px;
}
.avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid var(--bg);
  display: inline-block;
  margin-left: -8px;
}
.avatars .avatar:first-child { margin-left: 0; }

/* ---- FEATURES ---- */
.features {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 64px;
  max-width: 480px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feature-card {
  background: var(--bg-card);
  padding: 36px 32px;
  transition: background 0.2s;
}
.feature-card:hover { background: var(--bg-raised); }
.feature-icon {
  width: 40px; height: 40px;
  margin-bottom: 20px;
  color: var(--accent);
}
.feature-icon svg { width: 100%; height: 100%; }
.feature-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  line-height: 1.2;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
  font-weight: 300;
}

/* ---- SOCIAL PROOF ---- */
.social-proof {
  padding: 100px 0;
  border-top: 1px solid var(--border);
  background: var(--bg-raised);
}
.quotes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.quote-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: border-color 0.2s, transform 0.2s;
}
.quote-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.quote-card::before {
  content: '"';
  position: absolute;
  top: 20px; left: 28px;
  font-family: var(--font-display);
  font-size: 64px;
  line-height: 1;
  color: var(--accent-dim);
}
.quote-text {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 24px;
  font-style: italic;
  font-family: var(--font-display);
  position: relative;
}
.quote-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.quote-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
}
.quote-name {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 2px;
}
.quote-role {
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- FAQ ---- */
.faq {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}
.faq-list {
  max-width: 680px;
  margin-top: 48px;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  text-align: left;
  padding: 24px 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--accent); }
.faq-chevron {
  width: 18px; height: 18px;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform 0.25s ease;
}
.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
}
.faq-answer {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-weight: 300;
}
.faq-answer.open {
  max-height: 300px;
  padding-bottom: 24px;
}

/* ---- EMAIL CAPTURE ---- */
.capture {
  padding: 100px 0;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-raised) 0%, var(--bg) 100%);
}
.capture-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.capture-text h2 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin-bottom: 16px;
}
.capture-text p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  font-weight: 300;
}
.capture-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.form-row input[type="email"] {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.2s;
  min-width: 0;
}
.form-row input[type="email"]::placeholder { color: var(--text-faint); }
.form-row input[type="email"]:focus { border-color: var(--accent); }
.btn-submit {
  background: var(--accent);
  color: #0b0b0b;
  border: none;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, transform 0.15s;
  position: relative;
  overflow: hidden;
}
.btn-submit:hover { background: var(--accent-hover); }
.btn-submit:disabled { opacity: 0.7; cursor: not-allowed; }
.btn-submit .btn-loading { display: none; }
.btn-submit.loading .btn-label { display: none; }
.btn-submit.loading .btn-loading { display: inline; }
.form-message {
  font-size: 13px;
  min-height: 18px;
  transition: color 0.2s;
}
.form-message.success { color: #34d399; }
.form-message.error { color: #f87171; }
.form-fine-print {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 12px;
}

/* ---- FOOTER ---- */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-tagline {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }
.footer-bottom {
  font-size: 12px;
  color: var(--text-faint);
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .hero { padding: 100px 0 72px; min-height: unset; }
  .capture-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-cta-group { flex-direction: column; align-items: flex-start; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .form-row { flex-direction: column; }
  .btn-submit { width: 100%; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .quotes-grid { grid-template-columns: 1fr; }
  .capture-form-wrap { padding: 24px; }
}

/* ---- PRODUCT PREVIEW ---- */
.preview {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

/* Stage: three panels in a row */
.preview-stage {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  margin-top: 56px;
  align-items: stretch;
  min-height: 300px;
}

/* Panels */
.preview-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  transition: border-color 0.4s ease;
}
.preview-panel--center {
  border-color: var(--border);
}
.preview-panel--center.active {
  border-color: rgba(245,158,11,0.35);
  box-shadow: 0 0 28px rgba(245,158,11,0.07);
}

/* Panel header */
.preview-panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
}
.preview-panel-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-faint);
  flex-shrink: 0;
}
.preview-panel-dot--amber { background: var(--accent); }
.preview-panel-dot--green { background: #34d399; }
.preview-panel-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.preview-processing-badge {
  margin-left: auto;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 2px 8px;
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.preview-processing-badge.visible { opacity: 1; }

/* Inbox list */
.preview-inbox-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.preview-inbox-item {
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all 0.4s ease;
  position: relative;
}
.preview-inbox-item--muted {
  background: var(--bg);
  border-color: var(--border);
  opacity: 0.45;
}
.preview-inbox-item--new {
  background: rgba(245,158,11,0.06);
  border-color: rgba(245,158,11,0.25);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.4s ease;
}
.preview-inbox-item--new.visible {
  opacity: 1;
  transform: translateY(0);
}
.preview-inbox-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 4px;
}
.preview-inbox-from {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}
.preview-inbox-subject {
  font-size: 12px;
  color: var(--text-muted);
}

/* Connectors */
.preview-connector {
  display: flex;
  align-items: center;
  padding: 0 12px;
  position: relative;
}
.preview-connector-line {
  position: absolute;
  left: 8px; right: 32px;
  top: 50%;
  height: 1px;
  background: var(--border);
  transform-origin: left;
  transition: background 0.6s ease;
}
.preview-connector-line.active { background: rgba(245,158,11,0.4); }
.preview-connector-arrow {
  width: 28px; height: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-faint);
  z-index: 1;
  transition: border-color 0.4s ease, color 0.4s ease;
  flex-shrink: 0;
}
.preview-connector.active .preview-connector-arrow {
  border-color: rgba(245,158,11,0.4);
  color: var(--accent);
}

/* Processing fields */
.preview-fields {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.preview-field {
  display: flex;
  align-items: baseline;
  gap: 8px;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.preview-field.visible {
  opacity: 1;
  transform: translateX(0);
}
.preview-field-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  min-width: 52px;
  flex-shrink: 0;
}
.preview-field-value {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  font-family: var(--font-body);
  min-height: 18px;
}

/* Confidence bar */
.preview-confidence {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.preview-confidence.visible { opacity: 1; }
.preview-confidence-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  min-width: 64px;
  flex-shrink: 0;
}
.preview-confidence-bar {
  flex: 1;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.preview-confidence-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 1.2s ease;
  border-radius: 2px;
}
.preview-confidence-pct {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  min-width: 32px;
  text-align: right;
}

/* Resolved panel */
.preview-resolved-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.5s ease;
}
.preview-resolved-card.visible {
  opacity: 1;
  transform: translateY(0);
  border-color: rgba(52,211,153,0.25);
}
.preview-resolved-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.preview-resolved-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.preview-resolved-status {
  font-size: 11px;
  font-weight: 700;
  color: #34d399;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.preview-resolved-status.visible { opacity: 1; }
.preview-resolved-detail {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.preview-resolved-note {
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.preview-resolved-note.visible { opacity: 1; }
.preview-resolved-note strong { color: var(--text); }

/* Slack-style notification */
.preview-notification {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(52,211,153,0.07);
  border: 1px solid rgba(52,211,153,0.18);
  border-radius: var(--radius);
  font-size: 12px;
  color: #34d399;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.preview-notification.visible {
  opacity: 1;
  transform: translateY(0);
}
.preview-notification svg {
  width: 16px; height: 16px;
  flex-shrink: 0;
}

/* Caption */
.preview-caption {
  margin-top: 28px;
  font-size: 12px;
  color: var(--text-faint);
  font-style: italic;
  text-align: center;
}

/* ---- PREVIEW RESPONSIVE ---- */
@media (max-width: 768px) {
  .preview-stage {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto auto;
    gap: 0;
  }
  .preview-connector {
    padding: 8px 24px;
    transform: rotate(90deg);
    height: 40px;
    justify-content: center;
  }
  .preview-connector-line {
    top: 50%;
    left: 16px;
    right: 16px;
  }
}

/* ---- REDUCED MOTION ---- */
@media (prefers-reduced-motion: reduce) {
  .preview-inbox-item--new,
  .preview-field,
  .preview-confidence,
  .preview-resolved-card,
  .preview-resolved-status,
  .preview-resolved-note,
  .preview-notification,
  .preview-processing-badge {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .preview-connector-line { background: rgba(245,158,11,0.4) !important; }
  .preview-connector-arrow {
    border-color: rgba(245,158,11,0.4) !important;
    color: var(--accent) !important;
  }
  .preview-panel--center {
    border-color: rgba(245,158,11,0.35) !important;
  }
  .preview-confidence-fill { width: 97% !important; transition: none !important; }
  .preview-confidence-pct::after { content: '97%'; }
}

/* ---- CAPTURE SUCCESS STATE ---- */
.capture-success {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid rgba(52, 211, 153, 0.25);
  border-radius: var(--radius-lg);
}
.capture-success-icon {
  width: 32px;
  height: 32px;
  color: #34d399;
  margin-bottom: 4px;
}
.capture-success-title {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--text);
  margin: 0;
}
.capture-success-sub {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}