/* ── RESET ── */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

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

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ── TYPOGRAPHY ── */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

h2 {
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

h3 {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  display: block;
  margin-bottom: 1rem;
}

/* ── CONTAINER ── */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

@media (max-width: 600px) {
  .container {
    padding: 0 1rem;
  }
}

/* ── BUTTONS ── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
  white-space: nowrap;
}

.btn-accent {
  background: var(--accent);
  color: var(--bg-deep);
}

.btn-accent:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-dark {
  background: var(--bg-deep);
  color: var(--text-primary);
}

.btn-dark:hover {
  background: var(--bg-surface);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* ── FADE-IN ANIMATION ── */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ── UTILITY ── */

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