/* =============================================================================
   MOMENTUM DLE — CORE DESIGN SYSTEM
   Quiet Technology Lab Aesthetic
   ============================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* ── Design Tokens ─────────────────────────────────────────────────────────── */

:root {
  /* Surface */
  --void:        #050810;
  --deep:        #080d1a;
  --base:        #0c1220;
  --surface:     #101828;
  --raised:      #141e2e;
  --overlay:     #1a2540;

  /* Borders */
  --border-dim:  rgba(255,255,255,0.04);
  --border-soft: rgba(255,255,255,0.08);
  --border-mid:  rgba(255,255,255,0.12);
  --border-vis:  rgba(255,255,255,0.18);

  /* Text */
  --text-ghost:  rgba(255,255,255,0.18);
  --text-muted:  rgba(255,255,255,0.38);
  --text-dim:    rgba(255,255,255,0.55);
  --text-soft:   rgba(255,255,255,0.72);
  --text-base:   rgba(255,255,255,0.88);
  --text-bright: rgba(255,255,255,0.97);

  /* Accent */
  --gold:        #c8a96e;
  --gold-dim:    #9a7d4a;
  --gold-glow:   rgba(200,169,110,0.12);
  --gold-glow-s: rgba(200,169,110,0.06);

  /* Signal */
  --signal-blue: #3b82f6;
  --signal-green:#22c55e;
  --signal-amber:#f59e0b;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  /* Spacing */
  --space-xs:  0.375rem;
  --space-sm:  0.75rem;
  --space-md:  1.25rem;
  --space-lg:  2rem;
  --space-xl:  3.5rem;
  --space-2xl: 6rem;
  --space-3xl: 10rem;

  /* Layout */
  --content-max: 1160px;
  --content-pad: clamp(1.25rem, 5vw, 3.5rem);

  /* Motion */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.4, 0, 1, 1);
  --ease-circ: cubic-bezier(0.075, 0.82, 0.165, 1);

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-xl: 24px;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background-color: var(--void);
  color: var(--text-base);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ── Typography Scale ───────────────────────────────────────────────────────── */

.display-1 {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text-bright);
}

.display-2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--text-bright);
}

.headline {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-bright);
}

.subheadline {
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 2.5vw, 1.625rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--text-soft);
}

.body-lg {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.body-md {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-dim);
}

.label {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.label-gold {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ── Layout Utilities ───────────────────────────────────────────────────────── */

.dle-wrap {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--content-pad);
}

.dle-section {
  padding: var(--space-2xl) 0;
}

.dle-section--lg {
  padding: var(--space-3xl) 0;
}

/* ── Buttons ────────────────────────────────────────────────────────────────── */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background: var(--gold);
  color: var(--void);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: opacity 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border: 1px solid var(--border-vis);
  color: var(--text-soft);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, color 0.2s, transform 0.2s var(--ease-out);
}

.btn-ghost:hover {
  border-color: var(--gold-dim);
  color: var(--gold);
  transform: translateY(-1px);
}

/* ── Dividers ───────────────────────────────────────────────────────────────── */

.dle-divider {
  width: 100%;
  height: 1px;
  background: var(--border-dim);
}

.dle-divider--gold {
  width: 2.5rem;
  height: 2px;
  background: var(--gold);
  border-radius: 1px;
}

/* ── Noise overlay ──────────────────────────────────────────────────────────── */

.dle-noise::after {
  content: '';
  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='0.035'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

/* ── Entry animations ───────────────────────────────────────────────────────── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slowPan {
  from { transform: scale(1.06) translate(0, 0); }
  to   { transform: scale(1.0) translate(-1%, -1%); }
}

.anim-fade-up {
  animation: fadeUp 0.9s var(--ease-out) both;
}

.anim-fade-in {
  animation: fadeIn 1.2s var(--ease-out) both;
}

/* Staggered delays for sequential reveal */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.25s; }
.delay-3 { animation-delay: 0.4s; }
.delay-4 { animation-delay: 0.6s; }
.delay-5 { animation-delay: 0.8s; }

/* ── Scrollbar ──────────────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--void); }
::-webkit-scrollbar-thumb { background: var(--border-vis); border-radius: 2px; }

/* ── Selection ──────────────────────────────────────────────────────────────── */

::selection {
  background: var(--gold-glow);
  color: var(--gold);
}