/* ═══════════════════════════════════════════════════════════
   SPARK7 – GLOBAL BASE STYLES
   global.css
   Reset, base typography, shared utility classes.
═══════════════════════════════════════════════════════════ */

@import './tokens.css';

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--s7-bg-deep);
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ── Typography helpers ── */
.font-heading { font-family: var(--font-heading); }
.font-body    { font-family: var(--font-body); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;          /* Audiowide has no bold variant — weight 400 is correct */
  letter-spacing: 0.05em;
  line-height: 1.15;
}

/* ── Color utilities ── */
.text-cyan   { color: var(--s7-cyan); }
.text-red    { color: var(--s7-red); }
.text-purple { color: var(--s7-purple); }
.text-green  { color: var(--s7-green); }
.text-rose   { color: var(--s7-rose); }
.text-muted  { color: rgba(255,255,255,0.55); }

/* ── Layout helpers ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

/* ── Section padding ── */
.section {
  position: relative;
  z-index: 2;
  padding-block: var(--space-xl);
}

/* ── Neuron canvas (shared) ── */
.neuron-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ── Glass card ── */
.glass-card {
  background: var(--s7-bg-surface);
  border: var(--s7-border);
  border-radius: 12px;
  backdrop-filter: blur(8px);
}

/* ── Divider line ── */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent,
    rgba(36,189,216,0.4) 20%,
    rgba(36,189,216,0.4) 80%,
    transparent
  );
  margin-block: var(--space-xl);
}

/* ── Scroll fade-in animation ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Page wrapper (offset for fixed nav) ── */
.page-wrapper {
  padding-top: var(--nav-height);
  min-height: 100vh;
}