/* Reset & Base Typography */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

code, pre {
  font-family: var(--font-mono);
}

h1, h2, h3, h4 {
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); }

p {
  color: var(--fg-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
}

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

/* Selection */
::selection {
  background: rgba(var(--accent-rgb), 0.3);
  color: var(--fg);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: hsla(0, 0%, 100%, 0.1);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: hsla(0, 0%, 100%, 0.2); }

/* Section wrapper */
.section {
  padding: 0 24px;
  max-width: var(--max-width);
  margin: 0 auto var(--section-gap);
  position: relative;
}

/* Reveal animation base */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Section label */
.section-label {
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 12px;
}

/* Section subtitle */
.section-subtitle {
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto 48px;
  text-align: center;
}

/* Section separator */
.section-separator {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(var(--accent-rgb), 0.3) 30%, rgba(var(--accent-rgb), 0.5) 50%, rgba(var(--accent-rgb), 0.3) 70%, transparent);
  max-width: var(--max-width);
  margin: 0 auto var(--section-gap);
}