/* ==========================================================================
   GHERAS — Base: reset, layered dynamic background, typography primitives
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: var(--lead-body);
  color: var(--ink);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

body.is-locked {
  overflow: hidden;
}

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

img {
  height: auto;
}

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

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: var(--green-600);
  color: var(--grey-100);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: var(--sp-4);
  z-index: 400;
  padding: 0.7rem 1.1rem;
  background: var(--navy-800);
  border: 1px solid var(--line-accent);
  border-radius: var(--r-pill);
  font-size: var(--text-sm);
  transition: top var(--dur-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--sp-4);
}

/* ==========================================================================
   LAYERED DYNAMIC BACKGROUND
   ========================================================================== */

.bg-stack {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(
      120% 80% at 80% -10%,
      rgba(26, 65, 96, 0.85) 0%,
      transparent 62%
    ),
    radial-gradient(
      90% 70% at 8% 8%,
      rgba(10, 58, 41, 0.7) 0%,
      transparent 58%
    ),
    linear-gradient(
      180deg,
      var(--navy-950) 0%,
      var(--navy-1000) 42%,
      #04121c 74%,
      var(--navy-1000) 100%
    );
}

.bg-stack__mesh {
  position: absolute;
  inset: -20%;
  filter: blur(70px) saturate(125%);
  opacity: 0.72;
  mix-blend-mode: screen;
}

.bg-stack__mesh i {
  position: absolute;
  display: block;
  border-radius: 50%;
  will-change: transform;
}

.bg-stack__mesh i:nth-child(1) {
  width: 46vw;
  height: 46vw;
  top: 4%;
  left: -6%;
  background: radial-gradient(
    circle at 35% 35%,
    rgba(31, 122, 85, 0.62),
    transparent 68%
  );
  animation: meshDriftA 26s var(--ease-in-out) infinite alternate;
}

.bg-stack__mesh i:nth-child(2) {
  width: 54vw;
  height: 54vw;
  top: 26%;
  right: -12%;
  background: radial-gradient(
    circle at 60% 40%,
    rgba(35, 82, 117, 0.66),
    transparent 70%
  );
  animation: meshDriftB 34s var(--ease-in-out) infinite alternate;
}

.bg-stack__mesh i:nth-child(3) {
  width: 40vw;
  height: 40vw;
  bottom: 2%;
  left: 22%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(63, 190, 134, 0.34),
    transparent 66%
  );
  animation: meshDriftC 30s var(--ease-in-out) infinite alternate;
}

.bg-stack__mesh i:nth-child(4) {
  width: 32vw;
  height: 32vw;
  top: 58%;
  left: -8%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(93, 118, 140, 0.4),
    transparent 64%
  );
  animation: meshDriftA 38s var(--ease-in-out) infinite alternate-reverse;
}

@keyframes meshDriftA {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(9vw, -7vh, 0) scale(1.18);
  }
}

@keyframes meshDriftB {
  from {
    transform: translate3d(0, 0, 0) scale(1.08);
  }
  to {
    transform: translate3d(-11vw, 8vh, 0) scale(0.94);
  }
}

@keyframes meshDriftC {
  from {
    transform: translate3d(0, 0, 0) scale(0.96);
  }
  to {
    transform: translate3d(7vw, -10vh, 0) scale(1.22);
  }
}

.bg-stack__weave {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(to right, rgba(166, 188, 205, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(166, 188, 205, 0.04) 1px, transparent 1px);
  background-size: 92px 92px;
  mask-image: radial-gradient(120% 90% at 50% 20%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(
    120% 90% at 50% 20%,
    #000 20%,
    transparent 78%
  );
}

.bg-stack__grain {
  position: absolute;
  inset: 0;
  opacity: 0.26;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

.bg-stack__vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    115% 85% at 50% 45%,
    transparent 40%,
    rgba(3, 10, 18, 0.72) 100%
  );
}

@media (prefers-reduced-motion: reduce) {
  .bg-stack__mesh i {
    animation: none !important;
  }
}

/* ==========================================================================
   LAYOUT PRIMITIVES & RESPONSIVE GRID
   ========================================================================== */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
  display: flex;
  flex-direction: column;
}

.shell--wide {
  max-width: 104rem;
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--tight {
  padding-block: clamp(3.5rem, 7vh, 6.5rem);
}

.section--flush {
  padding-block: 0;
}

.stack > * + * {
  margin-top: var(--sp-6);
}

.mt-4 {
  margin-top: var(--sp-4);
}
.mt-6 {
  margin-top: var(--sp-6);
}
.mt-8 {
  margin-top: var(--sp-8);
}
.mt-12 {
  margin-top: var(--sp-12);
}
.mt-16 {
  margin-top: var(--sp-16);
}

.grid {
  display: grid;
  gap: clamp(1.25rem, 2.4vw, 2.25rem);
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  text-align: left;
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 5vw, 5.5rem);
  align-items: center;
}

.split--text-lead {
  grid-template-columns: 1.05fr 0.95fr;
}

.split--media-lead {
  grid-template-columns: 0.95fr 1.05fr;
}

.split--sticky {
  align-items: start;
}

.split--flip > *:first-child {
  order: 2;
}

/* Responsive Grid & Split Breakpoints */
@media (max-width: 1024px) {
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split,
  .split--text-lead,
  .split--media-lead {
    grid-template-columns: minmax(0, 1fr);
  }

  .split--flip > *:first-child {
    order: 0;
  }
}

@media (max-width: 620px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ==========================================================================
   TYPOGRAPHY PRIMITIVES
   ========================================================================== */

.display,
.h-mono,
h1,
h2 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: var(--track-tight);
  line-height: var(--lead-tight);
  color: var(--ink);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 0.82;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: transparent;
  background: linear-gradient(
    172deg,
    var(--grey-100) 0%,
    var(--grey-300) 34%,
    var(--green-300) 62%,
    var(--green-600) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  white-space: nowrap;
}

.wordmark--outline {
  color: transparent;
  background: none;
  -webkit-text-stroke: 1px rgba(166, 188, 205, 0.35);
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
}

.title-xl {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  line-height: var(--lead-tight);
  text-transform: uppercase;
}

.title-lg {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  line-height: var(--lead-snug);
}

.title-md {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: var(--lead-snug);
}

.editorial {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.28;
  color: var(--ink-soft);
}

.editorial em {
  font-style: italic;
  color: var(--accent-glow);
}

h3,
h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--text-md);
  line-height: 1.3;
  letter-spacing: -0.005em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow--grey {
  color: var(--ink-mute);
}

.lede {
  font-size: var(--text-lg);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 46ch;
  font-weight: 300;
}

.body {
  color: var(--ink-mute);
  max-width: 62ch;
}

.muted {
  color: var(--ink-mute);
}

.num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

.index-tag {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink-faint);
}

hr.rule {
  height: 1px;
  border: 0;
  background: var(--line);
  margin-block: var(--sp-8);
}