/* ========================================================================
   GLOBAL STYLES
   ======================================================================== */

body {
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: var(--t-base);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
}

/* Subtle noise texture (CSS-only, no image needed) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  mix-blend-mode: overlay;
}

/* Grid backdrop overlay (very subtle) */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

main { position: relative; z-index: var(--z-base); }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-bg-3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-primary); }

/* Container */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
}
.container--narrow { max-width: var(--max-w-text); }

section { position: relative; }

/* Focus */
:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

::selection {
  background: rgba(var(--c-accent-rgb), 0.35);
  color: var(--c-white);
}

/* Typography utilities */
.t-display {
  font-family: var(--font-display);
  font-size: var(--t-5xl);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
}
.t-h1 {
  font-family: var(--font-display);
  font-size: var(--t-4xl);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.028em;
  color: var(--c-white);
}
.t-h2 {
  font-family: var(--font-display);
  font-size: var(--t-3xl);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.022em;
  color: var(--c-white);
}
.t-h3 {
  font-family: var(--font-body);
  font-size: var(--t-xl);
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-white);
}
.t-body {
  font-family: var(--font-body);
  font-size: var(--t-base);
  line-height: 1.7;
  color: var(--c-text);
}
.t-label {
  font-family: var(--font-body);
  font-size: var(--t-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--c-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}
.t-label::before {
  content: '';
  width: 18px; height: 1px;
  background: currentColor;
}
.t-gradient {
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}
.t-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* Reveal-up animation primitive */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--t-ease-out), transform 0.9s var(--t-ease-out);
  will-change: opacity, transform;
}
.reveal-up.is-revealed { opacity: 1; transform: translateY(0); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--t-sm);
  border-radius: var(--r-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--t-base-t), box-shadow var(--t-base-t),
              background var(--t-base-t), border-color var(--t-base-t),
              color var(--t-base-t);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}
.btn--sm  { padding: 0.55rem 1.3rem; }
.btn--md  { padding: 0.8rem 1.8rem; font-size: var(--t-base); }
.btn--lg  { padding: 1rem 2.25rem;  font-size: var(--t-lg); }
.btn--xl  { padding: 1.15rem 2.6rem; font-size: var(--t-lg); }
.btn--full { width: 100%; justify-content: center; }

.btn--primary {
  background: var(--grad-teal);
  color: #04121F;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06) inset, 0 10px 30px -10px rgba(var(--c-accent-rgb), 0.45);
}
.btn--primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
  transform: translateX(-150%);
  transition: transform 0.7s var(--t-ease-out);
  pointer-events: none;
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.12) inset, 0 18px 50px -10px rgba(var(--c-accent-rgb), 0.65);
}
.btn--primary:hover::after { transform: translateX(150%); }
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: rgba(255,255,255,0.02);
  color: var(--c-text);
  border-color: var(--c-border-bright);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--c-accent);
  border-color: rgba(var(--c-accent-rgb), 0.5);
}
.btn--outline:hover {
  background: rgba(var(--c-accent-rgb), 0.08);
  border-color: var(--c-accent);
  transform: translateY(-2px);
}