/* =======================================================================
   REM Labs — Marketing Polish Pass
   Unified typography, spacing, interaction, and depth across marketing.
   Does NOT affect app pages (console, dream-studio, coma, morning, account,
   playground, memory-explorer) which opt out with `body.app` or inline overrides.
   ======================================================================= */

:root {
  --sec-y: clamp(56px, 10vw, 96px);
  --sec-head-mb: clamp(32px, 5vw, 56px);
  --card-pad: clamp(20px, 3vw, 28px);
  --card-gap: 18px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.18s;
  --grad-accent: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --grad-accent-soft: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, rgba(139,92,246,0.06) 50%, rgba(168,85,247,0.05) 100%);
  --shadow-sm: 0 1px 2px rgba(15,15,30,0.04), 0 1px 3px rgba(15,15,30,0.06);
  --shadow-md: 0 4px 12px rgba(15,15,30,0.06), 0 1px 3px rgba(15,15,30,0.05);
  --shadow-lg: 0 12px 40px rgba(15,15,30,0.08), 0 2px 8px rgba(15,15,30,0.04);
  --shadow-xl: 0 24px 64px rgba(15,15,30,0.1), 0 4px 16px rgba(15,15,30,0.06);
  --shadow-accent: 0 8px 32px rgba(99,102,241,0.2), 0 2px 8px rgba(99,102,241,0.12);
}

[data-theme="dark"] {
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3), 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.35), 0 1px 3px rgba(0,0,0,0.25);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.4), 0 2px 8px rgba(0,0,0,0.3);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.5), 0 4px 16px rgba(0,0,0,0.35);
  --shadow-accent: 0 8px 32px rgba(129,140,248,0.28), 0 2px 8px rgba(129,140,248,0.18);
}

/* ---------- Scroll behavior ---------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h, 52px) + 16px);
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- Numeric polish ---------- */
.tabular, .mono, code, pre, .section-eyebrow, .bench-bar-fill, .price, .price-num {
  font-variant-numeric: tabular-nums;
}

/* ---------- Typography rhythm (marketing only — not .app-shell) ---------- */
body:not(.app) h1,
body:not(.app) .hero h1 {
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  text-wrap: balance;
}

body:not(.app) .section-h2,
body:not(.app) h2.section-h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  text-wrap: balance;
}

body:not(.app) h3 {
  letter-spacing: -0.01em;
  line-height: 1.3;
}

body:not(.app) .section-eyebrow {
  display: inline-block;
  font-family: var(--mono, 'JetBrains Mono', monospace);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}

body:not(.app) .section-sub {
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--text2);
}

/* Mono detail labels */
body:not(.app) .mono-label,
body:not(.app) .kbd,
body:not(.app) .hiw-step-label {
  font-family: var(--mono, 'JetBrains Mono', monospace);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ---------- Spacing rhythm ---------- */
body:not(.app) .section {
  padding: var(--sec-y) 28px;
}
@media (max-width: 720px) {
  body:not(.app) .section { padding: var(--sec-y) 20px; }
}

body:not(.app) .section-head {
  margin-bottom: var(--sec-head-mb);
}

/* ---------- Buttons & interaction timing ---------- */
body:not(.app) a,
body:not(.app) button,
body:not(.app) .btn,
body:not(.app) .btn-primary,
body:not(.app) .btn-ghost,
body:not(.app) .nav-link,
body:not(.app) .nav-signin,
body:not(.app) .nav-cta {
  transition: color var(--dur) var(--ease),
              background var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              opacity var(--dur) var(--ease);
}

body:not(.app) .btn-primary:hover,
body:not(.app) .nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
body:not(.app) .btn-primary:active,
body:not(.app) .nav-cta:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

body:not(.app) .btn-ghost:hover {
  transform: translateY(-1px);
}

/* Focus rings — every interactive element */
body:not(.app) a:focus-visible,
body:not(.app) button:focus-visible,
body:not(.app) .btn-primary:focus-visible,
body:not(.app) .btn-ghost:focus-visible,
body:not(.app) .nav-link:focus-visible,
body:not(.app) .nav-cta:focus-visible,
body:not(.app) input:focus-visible,
body:not(.app) textarea:focus-visible,
body:not(.app) select:focus-visible,
body:not(.app) [tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- Card unification (marketing only) ---------- */
body:not(.app) .diff-card:hover,
body:not(.app) .uc-card:hover,
body:not(.app) .not-card:hover,
body:not(.app) .feat-card:hover,
body:not(.app) .int-card:hover,
body:not(.app) .pricing-card:hover,
body:not(.app) .card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-border, rgba(99,102,241,0.2));
  box-shadow: var(--shadow-lg);
}
body:not(.app) .diff-card,
body:not(.app) .uc-card,
body:not(.app) .not-card,
body:not(.app) .feat-card,
body:not(.app) .int-card,
body:not(.app) .pricing-card,
body:not(.app) .card {
  transition: transform var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

/* ---------- Code block refinement ---------- */
body:not(.app) pre:not(.hero-snippet):not(.code-block pre) {
  background: #0d0d1a;
  color: rgba(255,255,255,0.88);
  border-radius: 12px;
  padding: 20px 22px;
  font-family: var(--mono, 'JetBrains Mono', monospace);
  font-size: 0.82rem;
  line-height: 1.7;
  overflow-x: auto;
  font-variant-numeric: tabular-nums;
}
body:not(.app) .code-block {
  background: #0d0d1a !important;
}

/* ---------- Nav scroll blur enhancement ---------- */
body:not(.app) .nav.scrolled {
  backdrop-filter: blur(14px) saturate(180%);
  -webkit-backdrop-filter: blur(14px) saturate(180%);
  box-shadow: 0 1px 0 var(--border), 0 6px 24px rgba(15,15,30,0.04);
}
[data-theme="dark"] body:not(.app) .nav.scrolled {
  box-shadow: 0 1px 0 var(--border), 0 6px 24px rgba(0,0,0,0.4);
}

/* ---------- Hero accent glow (top-right subtle) ---------- */
body:not(.app) .hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(ellipse at center, rgba(139,92,246,0.14), rgba(99,102,241,0.06) 40%, transparent 70%);
  filter: blur(40px);
  opacity: 0.6;
}
[data-theme="dark"] body:not(.app) .hero::before {
  background: radial-gradient(ellipse at center, rgba(139,92,246,0.22), rgba(99,102,241,0.1) 40%, transparent 70%);
  opacity: 0.9;
}
@media (prefers-reduced-motion: reduce) {
  body:not(.app) .hero::before { opacity: 0.3; }
}

/* ---------- Reveal animation (refined) ---------- */
@media (prefers-reduced-motion: no-preference) {
  body:not(.app) .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
    will-change: opacity, transform;
  }
  body:not(.app) .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
  body:not(.app) .reveal.visible {
    will-change: auto;
  }
  body:not(.app) .d1 { transition-delay: 0.1s; }
  body:not(.app) .d2 { transition-delay: 0.2s; }
  body:not(.app) .d3 { transition-delay: 0.3s; }
  body:not(.app) .d4 { transition-delay: 0.4s; }
}
@media (prefers-reduced-motion: reduce) {
  body:not(.app) .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------- Page-load progress bar ---------- */
#rem-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--grad-accent);
  z-index: 999;
  box-shadow: 0 0 8px rgba(99,102,241,0.4);
  transition: width 0.24s var(--ease-out), opacity 0.4s var(--ease);
  pointer-events: none;
}
#rem-progress.done { opacity: 0; }

/* ---------- Icon unification ---------- */
body:not(.app) svg.icon-16 { width: 16px; height: 16px; }
body:not(.app) svg.icon-20 { width: 20px; height: 20px; }
body:not(.app) svg.icon-24 { width: 24px; height: 24px; }

/* ---------- Microtypography ---------- */
body:not(.app) {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body:not(.app) h1, body:not(.app) h2, body:not(.app) h3 {
  text-wrap: balance;
}
body:not(.app) p {
  text-wrap: pretty;
}

/* Dark mode border opacity unification */
[data-theme="dark"] body:not(.app) .diff-card,
[data-theme="dark"] body:not(.app) .uc-card,
[data-theme="dark"] body:not(.app) .not-card,
[data-theme="dark"] body:not(.app) .feat-card,
[data-theme="dark"] body:not(.app) .int-card,
[data-theme="dark"] body:not(.app) .pricing-card,
[data-theme="dark"] body:not(.app) .card {
  border-color: var(--border);
}

/* Hanging punctuation where supported */
body:not(.app) blockquote,
body:not(.app) .hero-sub,
body:not(.app) .section-sub {
  hanging-punctuation: first;
}

/* ---------- Gradient section depth accents ---------- */
body:not(.app) .section-dark,
body:not(.app) .cta-band,
body:not(.app) .demo-section {
  position: relative;
}
body:not(.app) .cta-band::after,
body:not(.app) .demo-section::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    135deg,
    rgba(255,255,255,0.005) 0,
    rgba(255,255,255,0.005) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: 0.5;
}

/* Button hover elevation unified */
body:not(.app) a.btn-primary,
body:not(.app) button.btn-primary {
  will-change: transform;
}