/* ─── 137 Fine Design Tokens ─────────────────────────────────────────────── */
:root {
  /* Color — dark surface */
  --ink-950: #08090B;
  --ink-800: #141519;
  --ink-600: #2E3040;
  --ink-500: #4A4E5C;
  --ink-400: #6B7080;
  --ink-300: #9299AA;
  --ink-200: #B5BBC8;
  --paper:   #FAF8F3;

  /* Color — gold accent */
  --gold-500: #BE9748;
  --gold-400: #CCA85E;
  --gold-300: #D9BF84;
  --gold-200: #E8D9B4;

  /* Color — light surface (right panel) */
  --bg-base:     #F5F3EE;
  --surface-card: #FFFFFF;

  /* Text on light */
  --text-primary: #1A1B1E;
  --text-body:    #3A3C44;
  --text-muted:   #6B7080;
  --text-faint:   #9299AA;
  --text-accent:  var(--gold-500);

  /* Borders */
  --border-hair:   rgba(0, 0, 0, 0.07);
  --border-subtle: rgba(0, 0, 0, 0.10);
  --border-strong: #C8CAD4;
  --border-focus:  var(--gold-500);
  --focus-ring:    rgba(190, 151, 72, 0.18);

  /* Typography */
  --font-serif: 'Spectral', Georgia, serif;
  --font-sans:  'Hanken Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:  'IBM Plex Mono', 'Courier New', monospace;

  /* Font weights */
  --fw-light:    300;
  --fw-regular:  400;
  --fw-medium:   500;
  --fw-semibold: 600;

  /* Text sizes */
  --text-2xs: 10.5px;
  --text-xs:  12px;
  --text-sm:  13px;
  --text-md:  15px;
  --text-base:16px;
  --text-lg:  18px;
  --text-xl:  22px;
  --text-2xl: 28px;

  /* Tracking */
  --tracking-caps: 0.09em;
  --tracking-tight: -0.02em;
  --tracking-normal: 0;

  /* Shape */
  --radius-sm: 4px;
  --radius-md: 6px;

  /* Motion */
  --ease-ui: cubic-bezier(0.32, 0.08, 0.24, 1);
}

/* ─── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { background: var(--ink-950); color: var(--paper); font-family: var(--font-sans); }
::placeholder { color: var(--text-faint); }

/* ─── Entrance animation ──────────────────────────────────────────────────── */
@keyframes lp-rise {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.lp-animate {
  opacity: 0;
  animation: lp-rise 280ms var(--ease-ui) forwards;
}
.lp-animate--1 { animation-delay: 80ms; }
.lp-animate--2 { animation-delay: 160ms; }
.lp-animate--3 { animation-delay: 240ms; }
.lp-animate--4 { animation-delay: 320ms; }
.lp-animate--5 { animation-delay: 400ms; }

@media (prefers-reduced-motion: reduce) {
  .lp-animate { animation: none; opacity: 1; }
}

/* Panel state transition */
@keyframes lp-panel-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.lp-panel-inner--entering {
  animation: lp-panel-in 240ms var(--ease-ui) forwards;
}

/* ─── Root ────────────────────────────────────────────────────────────────── */
.lp-root {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--ink-950);
}

/* ─── Header ──────────────────────────────────────────────────────────────── */
.lp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 1px solid color-mix(in oklab, #fff 8%, transparent);
  flex-shrink: 0;
}

/* Wordmark: "137" mono + "Fine" serif italic + α */
.lp-wordmark {
  display: flex;
  align-items: baseline;
  gap: 0;
  user-select: none;
  font-size: 20px;
  color: var(--paper);
}
.lp-wordmark-num {
  font-family: var(--font-mono);
  font-weight: var(--fw-medium);
  letter-spacing: -0.01em;
}
.lp-wordmark-name {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: var(--fw-light);
  margin-left: 5px;
  letter-spacing: var(--tracking-tight);
}
.lp-wordmark-alpha {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: var(--fw-light);
  font-size: 13px;
  color: var(--gold-300);
  margin-left: 3px;
  position: relative;
  top: -3px;
}

.lp-header-contact {
  font-family: var(--font-sans);
  font-size: var(--text-2xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--ink-400);
}

/* ─── Body grid ───────────────────────────────────────────────────────────── */
.lp-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: stretch;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  flex: 1;
}

/* ─── Left panel ──────────────────────────────────────────────────────────── */
.lp-left {
  position: relative;
  overflow: hidden;
  padding: 104px 56px 96px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.lp-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    120% 90% at 12% -10%,
    color-mix(in oklab, var(--gold-500) 12%, transparent),
    transparent 55%
  );
  pointer-events: none;
}

.lp-left-content {
  position: relative;
  z-index: 1;
}

/* ─── Typography ──────────────────────────────────────────────────────────── */
.lp-eyebrow {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--text-2xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  line-height: 1;
}
.lp-eyebrow--gold   { color: var(--gold-300); }
.lp-eyebrow--accent { color: var(--text-accent); }

.lp-h1 {
  margin-top: 22px;
  font-family: var(--font-serif);
  font-weight: var(--fw-light);
  font-size: clamp(40px, 5vw, 60px);
  line-height: 1.04;
  letter-spacing: var(--tracking-tight);
  color: var(--paper);
  max-width: 460px;
}

.lp-subparagraph {
  margin-top: 24px;
  font-family: var(--font-sans);
  font-weight: var(--fw-regular);
  font-size: var(--text-md);
  line-height: 1.65;
  color: var(--ink-300);
  max-width: 420px;
}

/* α constant detail */
.lp-detail-row {
  margin-top: 44px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.lp-detail {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lp-detail-label {
  font-family: var(--font-sans);
  font-size: var(--text-2xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--ink-500);
  width: 64px;
  flex-shrink: 0;
}
.lp-detail-value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--fw-regular);
  color: var(--ink-200);
  letter-spacing: 0.01em;
}

/* Spectral band */
.lp-spectral {
  display: block;
  margin-top: 56px;
  max-width: 300px;
}

/* ─── Right panel ─────────────────────────────────────────────────────────── */
.lp-right {
  background: var(--bg-base);
  border-left: 1px solid var(--border-hair);
  padding: 88px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.lp-panel-inner {
  display: flex;
  flex-direction: column;
}
.lp-panel-inner--hidden {
  display: none;
}

/* H2 */
.lp-h2 {
  margin: 12px 0 32px;
  font-family: var(--font-serif);
  font-weight: var(--fw-light);
  font-size: var(--text-2xl);
  line-height: 1.1;
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}
.lp-h2--confirm {
  margin-top: 24px;
  margin-bottom: 0;
}

/* ─── Form ────────────────────────────────────────────────────────────────── */
.lp-form { display: contents; }

.lp-fields {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.lp-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.lp-field-label {
  font-family: var(--font-sans);
  font-size: var(--text-2xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1;
}

.lp-field-required {
  color: var(--gold-500);
  margin-left: 2px;
}

.lp-field-hint {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--text-faint);
  line-height: 1.4;
}

.lp-field-error {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: #C0392B;
  line-height: 1.4;
  min-height: 1em;
}

/* Shared input + textarea styles */
.lp-input,
.lp-textarea {
  width: 100%;
  background: var(--surface-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--fw-regular);
  line-height: 1.5;
  color: var(--text-primary);
  outline: none;
  transition: border-color 140ms var(--ease-ui), box-shadow 140ms var(--ease-ui);
  appearance: none;
  -webkit-appearance: none;
}
.lp-input { height: 40px; }
.lp-textarea { resize: vertical; }

.lp-input:focus,
.lp-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

/* ─── Submit button ───────────────────────────────────────────────────────── */
.lp-submit-wrap { margin-top: 28px; }

.lp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.01em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 120ms var(--ease-ui), opacity 120ms var(--ease-ui), box-shadow 120ms var(--ease-ui);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.lp-btn--lg {
  font-size: var(--text-sm);
  height: 44px;
  padding: 0 20px;
}
.lp-btn--md {
  font-size: var(--text-sm);
  height: 38px;
  padding: 0 16px;
}

.lp-btn--full { width: 100%; }

/* Primary: gold fill */
.lp-btn--primary {
  background: var(--gold-500);
  color: var(--ink-950);
}
.lp-btn--primary:hover:not(:disabled) {
  background: var(--gold-400);
  box-shadow: 0 2px 8px rgba(190, 151, 72, 0.28);
}
.lp-btn--primary:active:not(:disabled) {
  background: var(--gold-500);
  box-shadow: none;
}

/* Secondary: outlined */
.lp-btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}
.lp-btn--secondary:hover:not(:disabled) {
  background: rgba(0, 0, 0, 0.04);
  border-color: var(--text-muted);
}

.lp-btn:disabled {
  opacity: 0.55;
  cursor: default;
}

/* Loading state label swap */
.lp-btn-pending { display: none; }
.lp-btn--pending .lp-btn-label  { display: none; }
.lp-btn--pending .lp-btn-pending { display: inline; }

/* ─── Disclaimer ──────────────────────────────────────────────────────────── */
.lp-disclaimer {
  margin-top: 16px;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--text-faint);
}

.lp-form-error {
  margin-top: 10px;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: #C0392B;
  min-height: 1em;
}

/* ─── Confirmation state ──────────────────────────────────────────────────── */
.lp-check-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gold-500);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-500);
  flex-shrink: 0;
}

.lp-confirm-body {
  margin-top: 14px;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: 1.65;
  color: var(--text-body);
  max-width: 380px;
}

.lp-confirm-action {
  margin-top: 32px;
}

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .lp-grid {
    grid-template-columns: 1fr;
  }
  .lp-left {
    padding: 64px 32px;
  }
  .lp-right {
    border-left: none;
    border-top: 1px solid var(--border-hair);
    padding: 56px 32px;
  }
  .lp-header {
    padding: 18px 24px;
  }
}

@media (max-width: 480px) {
  .lp-left  { padding: 48px 20px; }
  .lp-right { padding: 48px 20px; }
  .lp-header { padding: 16px 20px; }
}