/* =========================================================
   TCS DESIGN SYSTEM — shared across all pages
   Page-specific section styles live in each page's inline <style>.
   ========================================================= */

/* =========================================================
   DESIGN TOKENS
   ========================================================= */
:root {
  /* Color */
  --bg:              #0A0A0A;
  --fg:              #FAFAFA;
  --muted:           #1A1A1A;
  --muted-fg:        #737373;
  --accent:          #C41E3A;
  --accent-deep:     #8F1226;
  --accent-fg:       #FAFAFA;
  --border:          #262626;
  --border-hover:    #3a3a3a;
  --input:           #1A1A1A;
  --card:            #0F0F0F;

  /* Type */
  --font-sans:    "Inter Tight", "Inter", system-ui, sans-serif;
  --font-display: "Playfair Display", Georgia, serif;
  --font-mono:    "JetBrains Mono", "Fira Code", ui-monospace, monospace;

  /* Tracking */
  --tr-tighter: -0.06em;
  --tr-tight:   -0.04em;
  --tr-normal:  -0.01em;
  --tr-wide:    0.05em;
  --tr-wider:   0.1em;
  --tr-widest:  0.2em;

  /* Motion */
  --ease: cubic-bezier(0.25, 0, 0, 1);
  --t-fast: 150ms;
  --t-base: 200ms;
  --t-slow: 500ms;

  /* Layout */
  --container: 1200px;
}

/* =========================================================
   RESET & BASE
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: var(--tr-normal);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; background: none; border: 0; cursor: pointer; color: inherit; padding: 0; }
ul { list-style: none; padding: 0; margin: 0; }

/* Noise grain — fractal turbulence at 1.5% opacity */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.015;
  background-image: url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

::selection { background: var(--accent); color: var(--accent-fg); }

/* =========================================================
   LAYOUT PRIMITIVES
   ========================================================= */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 768px) { .container { padding: 0 48px; } }
@media (min-width: 1024px){ .container { padding: 0 64px; } }

.section       { padding: 80px 0; position: relative; }
.section--tall { padding: 112px 0; }
.section--xtall{ padding: 128px 0; }
@media (min-width: 768px)  {
  .section       { padding: 112px 0; }
  .section--tall { padding: 128px 0; }
  .section--xtall{ padding: 160px 0; }
}
@media (min-width: 1024px) {
  .section--xtall{ padding: 200px 0; }
}

.section--muted    { background: var(--muted); }
.section--inverted { background: var(--fg); color: var(--bg); }
.section--inverted ::selection { background: var(--bg); color: var(--fg); }

.divider-top    { border-top: 1px solid var(--border); }
.divider-bottom { border-bottom: 1px solid var(--border); }

/* =========================================================
   TYPOGRAPHY
   ========================================================= */
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: var(--tr-widest);
  text-transform: uppercase;
  color: var(--muted-fg);
}
.eyebrow--accent { color: var(--accent); }

.display {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1;
  letter-spacing: var(--tr-tighter);
}

.headline {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: var(--tr-tight);
}

.lead {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--muted-fg);
  max-width: 42rem;
}
@media (min-width: 768px) { .lead { font-size: 1.25rem; } }

.pull-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: var(--tr-normal);
}

/* Decorative backdrop typography (hidden on mobile) */
.backdrop-type {
  position: absolute;
  pointer-events: none;
  user-select: none;
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: var(--tr-tighter);
  color: var(--fg);
  opacity: 0.025;
  white-space: nowrap;
  z-index: 0;
  display: none;
}
@media (min-width: 1024px) { .backdrop-type { display: block; } }

/* Layered-text depth (dup offset in border color) */
.layered { position: relative; display: inline-block; }
.layered::before {
  content: attr(data-layer);
  position: absolute;
  left: 2px; top: 2px;
  color: var(--border);
  z-index: -1;
  pointer-events: none;
}

/* =========================================================
   BUTTONS / LINKS
   ========================================================= */

/* Primary — accent text, always-visible underline, scales on hover */
.btn-primary {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 12px 0;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: var(--tr-wider);
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  transition: transform var(--t-fast) var(--ease);
}
.btn-primary::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 6px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(1);
  transform-origin: left;
  transition: transform var(--t-fast) var(--ease);
}
.btn-primary:hover::after { transform: scaleX(1.08); }
.btn-primary:active       { transform: translateY(1px); }
.btn-primary .arrow       { transition: transform var(--t-fast) var(--ease); }
.btn-primary:hover .arrow { transform: translateX(4px); }

/* Outline — border inversion on hover */
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 14px 24px;
  border: 1px solid var(--fg);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: var(--tr-wider);
  text-transform: uppercase;
  color: var(--fg);
  white-space: nowrap;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.btn-outline:hover { background: var(--fg); color: var(--bg); }
.btn-outline:active{ transform: translateY(1px); }

.section--inverted .btn-outline { border-color: var(--bg); color: var(--bg); }
.section--inverted .btn-outline:hover { background: var(--bg); color: var(--fg); }

/* Dark — solid black button (paired with .btn-outline on inverted sections) */
.btn-dark {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 14px 24px;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: var(--tr-wider);
  text-transform: uppercase;
  white-space: nowrap;
  transition: background var(--t-fast) var(--ease);
}
.btn-dark:hover { background: var(--accent); }

/* Ghost — reveal thin underline on hover */
.btn-ghost {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: var(--tr-wider);
  text-transform: uppercase;
  color: var(--muted-fg);
  transition: color var(--t-fast) var(--ease);
}
.btn-ghost::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 8px;
  height: 1px;
  background: var(--fg);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-fast) var(--ease);
}
.btn-ghost:hover           { color: var(--fg); }
.btn-ghost:hover::after    { transform: scaleX(1); }

/* Inline text link w/ animated underline */
.link {
  position: relative;
  color: var(--fg);
  transition: color var(--t-fast) var(--ease);
}
.link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: currentColor;
  transform: scaleX(1);
  transform-origin: left;
  transition: transform var(--t-fast) var(--ease);
}
.link:hover { color: var(--accent); }
.link:hover::after { transform: scaleX(1.08); }

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  transition: background var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
  background: transparent;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}
.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
@media (min-width: 768px)  { .nav__inner { padding: 24px 48px; } }
@media (min-width: 1024px) { .nav__inner { padding: 24px 64px; } }

.nav__brand {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: var(--tr-tight);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: opacity var(--t-fast) var(--ease);
}
.nav__brand:hover { opacity: 0.85; }
.nav__brand img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}
.nav__brand-text {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: var(--tr-widest);
  text-transform: uppercase;
  color: var(--muted-fg);
  line-height: 1.1;
}
@media (min-width: 480px) { .nav__brand-text { display: inline-block; } }
.nav__brand-text .accent { color: var(--fg); }

.nav__links {
  display: none;
  gap: 32px;
}
@media (min-width: 768px) { .nav__links { display: flex; } }

.nav__link {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: var(--tr-wider);
  text-transform: uppercase;
  color: var(--muted-fg);
  position: relative;
  padding: 6px 0;
  transition: color var(--t-fast) var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-fast) var(--ease);
}
.nav__link:hover { color: var(--fg); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--fg); }
.nav__link.is-active::after { transform: scaleX(1); }

.nav__cta {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tr-widest);
  text-transform: uppercase;
  color: var(--accent);
}
@media (min-width: 768px) { .nav__cta { display: inline-flex; } }

.nav__burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
@media (min-width: 768px) { .nav__burger { display: none; } }
.nav__burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--fg);
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease);
}
.nav.is-open .nav__burger span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav.is-open .nav__burger span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__burger span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav__mobile {
  display: none;
  flex-direction: column;
  padding: 8px 24px 24px;
  gap: 2px;
  border-top: 1px solid var(--border);
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
@media (min-width: 768px) { .nav__mobile { display: none !important; } }
.nav.is-open { background: rgba(10, 10, 10, 0.97); }
.nav.is-open .nav__mobile { display: flex; }
.nav__mobile .nav__link { padding: 14px 0; border-bottom: 1px solid var(--border); }
.nav__mobile .nav__link:last-child { border-bottom: none; }

/* =========================================================
   HERO (base — pages can extend with their own subtitles/meta)
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 48px;
}

.hero__eyebrow-row {
  display: flex;
  align-items: center;
  gap: 16px;
}
.hero__rule {
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 180px;
}

.hero__title {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: var(--tr-tighter);
  font-size: clamp(3rem, 13vw, 9rem);
}
.hero__title .period { color: var(--accent); }
.hero__title .light  { font-weight: 400; color: var(--muted-fg); font-style: italic; font-family: var(--font-display); letter-spacing: -0.02em; }

.hero__sub {
  max-width: 32rem;
  font-size: 1.125rem;
  line-height: 1.55;
  color: var(--muted-fg);
}
@media (min-width: 768px) { .hero__sub { font-size: 1.25rem; } }

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  max-width: 640px;
}
@media (min-width: 640px) { .hero__meta { grid-template-columns: repeat(4, 1fr); } }
.hero__meta-k {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tr-widest);
  text-transform: uppercase;
  color: var(--muted-fg);
  margin-bottom: 8px;
}
.hero__meta-v {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: var(--tr-tight);
  line-height: 1;
}
.hero__meta-v .accent { color: var(--accent); }

/* Default hero backdrop placement — pages can override per instance */
.hero__backdrop {
  right: -4vw;
  bottom: -4vw;
  font-size: 34vw;
  color: var(--accent);
  opacity: 0.045;
}

/* =========================================================
   SECTION INTRO — eyebrow + 2-line headline + lead
   Reusable across most sections.
   ========================================================= */
.sec-head {
  display: grid;
  gap: 40px;
  margin-bottom: 80px;
}
@media (min-width: 1024px) {
  .sec-head {
    grid-template-columns: 5fr 7fr;
    align-items: end;
    gap: 64px;
  }
}
.sec-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-top: 24px;
}
.sec-title .accent { color: var(--accent); }

/* =========================================================
   CTA — inverted section base
   Pages extend with their own form or button row.
   ========================================================= */
.cta {
  position: relative;
  overflow: hidden;
}
.cta__grid {
  display: grid;
  gap: 40px;
}
@media (min-width: 1024px) {
  .cta__grid { grid-template-columns: 7fr 5fr; gap: 64px; align-items: end; }
}
.cta__title {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: var(--tr-tighter);
  font-size: clamp(2.75rem, 8vw, 6rem);
}
.cta__title .accent { color: var(--accent); }
.cta__sub {
  font-size: 1.0625rem;
  line-height: 1.55;
  color: rgba(10, 10, 10, 0.6);
  max-width: 28rem;
  margin-bottom: 32px;
}
.cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.cta__backdrop {
  right: -3vw;
  bottom: -6vw;
  font-size: 28vw;
  color: var(--bg);
  opacity: 0.04;
}

/* =========================================================
   FOOTER
   ========================================================= */
footer { border-top: 1px solid var(--border); padding: 80px 0 32px; }
@media (min-width: 768px) { footer { padding: 112px 0 32px; } }

.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px 24px;
}
@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; gap: 64px 32px; }
}
.footer__brand {
  grid-column: 1 / -1;
  max-width: 28rem;
}
@media (min-width: 768px) { .footer__brand { grid-column: auto; } }

.footer__wordmark {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: var(--tr-tight);
  line-height: 1.1;
  margin-bottom: 16px;
}
.footer__wordmark .dot { color: var(--accent); }
.footer__tagline {
  color: var(--muted-fg);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.footer__col-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: var(--tr-widest);
  text-transform: uppercase;
  color: var(--muted-fg);
  margin-bottom: 20px;
}
.footer__col a {
  display: block;
  padding: 6px 0;
  color: var(--fg);
  font-size: 0.9375rem;
  transition: color var(--t-fast) var(--ease);
}
.footer__col a:hover { color: var(--accent); }

.footer__bot {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tr-wider);
  text-transform: uppercase;
  color: var(--muted-fg);
}

/* =========================================================
   SCROLL REVEAL
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: translateY(0); }

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}
.reveal-stagger.is-in > *               { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-in > *:nth-child(1)  { transition-delay: 100ms; }
.reveal-stagger.is-in > *:nth-child(2)  { transition-delay: 180ms; }
.reveal-stagger.is-in > *:nth-child(3)  { transition-delay: 260ms; }
.reveal-stagger.is-in > *:nth-child(4)  { transition-delay: 340ms; }
.reveal-stagger.is-in > *:nth-child(5)  { transition-delay: 420ms; }
.reveal-stagger.is-in > *:nth-child(6)  { transition-delay: 500ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger > * { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  html { scroll-behavior: auto; }
}