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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--transition-slow), color var(--transition-slow);
}

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

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

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  line-height: 1.2;
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
}

p {
  margin: 0;
  color: var(--text-muted);
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

::selection {
  background: var(--primary);
  color: #fff;
}

:focus-visible {
  outline: 3px solid var(--outline);
  outline-offset: 2px;
  border-radius: 0.5rem;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: var(--space-24);
}

.section--alt {
  background: var(--surface-2);
}

.section-head {
  max-width: 760px;
  margin: 0 auto var(--space-14);
  text-align: center;
}

.section-head h2 {
  font-size: var(--text-3xl);
  color: var(--text);
  margin-bottom: var(--space-4);
}

.section-head p {
  font-size: var(--text-lg);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-4);
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  color: var(--primary-strong);
  font-weight: 700;
  font-size: var(--text-sm);
}

.skip-link {
  position: fixed;
  top: -120px;
  inset-inline-start: 1rem;
  z-index: 1500;
  background: var(--primary);
  color: #fff;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

.noscript-note {
  position: fixed;
  inset-inline: 1rem;
  bottom: 1rem;
  background: #8c2c2c;
  color: #fff;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-md);
  z-index: 1500;
  font-size: var(--text-sm);
}

/* ── Reveal animations ── */

.reveal {
  opacity: 0;
  transform: translateY(28px) scale(0.97);
  filter: blur(4px);
  transition: opacity var(--animate-reveal), transform var(--animate-reveal), filter var(--animate-reveal);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

.reveal-delay-1 {
  transition-delay: calc(var(--animate-stagger) * 1);
}

.reveal-delay-2 {
  transition-delay: calc(var(--animate-stagger) * 2);
}

.reveal-delay-3 {
  transition-delay: calc(var(--animate-stagger) * 3);
}

/* ── Scroll progress indicator ── */

.scroll-progress {
  position: fixed;
  top: 0;
  inset-inline-start: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 200;
  transition: none;
  pointer-events: none;
}

/* ── Keyframe animations ── */

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

@keyframes float-glow {

  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }

  33% {
    transform: translate3d(8px, -12px, 0) scale(1.05);
  }

  66% {
    transform: translate3d(-6px, 8px, 0) scale(0.97);
  }
}

@keyframes pulse-soft {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.7;
  }
}

@keyframes border-glow {

  0%,
  100% {
    border-color: var(--primary);
    box-shadow: 0 0 12px var(--glow-primary);
  }

  50% {
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--glow-accent);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── Scroll-to-top button ── */

.scroll-top {
  position: fixed;
  bottom: 2rem;
  inset-inline-end: 2rem;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition-base), transform var(--transition-base), background var(--transition-fast);
  z-index: 90;
  pointer-events: none;
  color: var(--text);
  font-size: 1.2rem;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-top:hover {
  background: var(--primary-soft);
  box-shadow: var(--shadow-glow);
}

.scroll-top svg {
  width: 1.2rem;
  height: 1.2rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ── SR-only live region ── */

.sr-live {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* ── Reduced motion ── */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
    filter: none;
  }

  .scroll-top {
    transition: none;
  }
}