/* ═══════════════════════════════════════════════════════════
   Z-Plot Industries — style.css
   Mobile-first, no framework, custom properties throughout
════════════════════════════════════════════════════════════ */

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

:root {
  /* Brand palette */
  --color-bg:          #0A0B0F;
  --color-surface:     #12141A;
  --color-surface-2:   #1A1D26;
  --color-border:      rgba(255,255,255,.08);
  --color-text:        #E8EAF0;
  --color-muted:       #7B8098;
  --color-accent-def:  #6366F1; /* indigo */

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --space-xs:   .375rem;
  --space-sm:   .75rem;
  --space-md:   1.25rem;
  --space-lg:   2rem;
  --space-xl:   3rem;
  --space-2xl:  5rem;

  /* Radii */
  --radius-sm:  .5rem;
  --radius-md:  1rem;
  --radius-lg:  1.5rem;

  /* Transitions */
  --ease: cubic-bezier(.22,.68,0,1.2);
  --dur:  220ms;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

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

/* ─── Header ─────────────────────────────────────────────── */
.site-header {
  position: relative;
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  text-align: center;
  overflow: hidden;
}

.header-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 80% 60% at 50% -10%,
    rgba(99,102,241,.35) 0%,
    transparent 70%
  );
  pointer-events: none;
  z-index: 0;
}

.header-inner {
  position: relative;
  z-index: 1;
}

/* ─── Logo lockup (mark + wordmark text) ─────────────────── */
.logo-lockup {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: clamp(.65rem, 2vw, 1.1rem);
}

/* The inline SVG mark */
.logo-mark {
  width:  clamp(2.5rem, 7vw, 3.5rem);
  height: clamp(2.5rem, 7vw, 3.5rem);
  flex-shrink: 0;
  /* Subtle glow on the mark that matches the accent */
  filter: drop-shadow(0 0 10px rgba(99,102,241,.30));
  transition: filter var(--dur) ease;
}

.logo-lockup:hover .logo-mark,
.logo-lockup:focus-within .logo-mark {
  filter: drop-shadow(0 0 18px rgba(99,102,241,.55));
}

/* Text side of lockup */
.logo-text {
  text-align: left;
}

.wordmark {
  font-size: clamp(1.85rem, 6.5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1;
}

.wordmark-z {
  color: #6366F1;
}

.wordmark-plot {
  color: var(--color-text);
}

.wordmark-industries {
  font-size: clamp(.7rem, 2vw, .95rem);
  font-weight: 400;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-top: .15rem;
}

.tagline {
  font-size: clamp(.8rem, 2vw, .95rem);
  color: var(--color-muted);
  margin-top: var(--space-sm);
}

/* ─── Main / section ─────────────────────────────────────── */
main {
  flex: 1;
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-2xl);
}

.section-label {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

/* ─── Card grid ──────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 560px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 800px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ─── Card ───────────────────────────────────────────────── */
.card {
  --accent: var(--color-accent-def);
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) ease,
    border-color var(--dur) ease,
    background var(--dur) ease;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 0% 0%,
    color-mix(in srgb, var(--accent) 18%, transparent) 0%,
    transparent 65%
  );
  opacity: 0;
  transition: opacity var(--dur) ease;
  pointer-events: none;
}

.card:hover,
.card:focus-visible {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow:
    0 8px 32px color-mix(in srgb, var(--accent) 20%, transparent),
    0 2px 8px rgba(0,0,0,.4);
  background: var(--color-surface-2);
  outline: none;
}

.card:hover::before,
.card:focus-visible::before {
  opacity: 1;
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card:active {
  transform: translateY(-1px);
}

/* ─── Card — todo / coming soon state ───────────────────── */
.card--todo {
  cursor: default;
  pointer-events: none;
  opacity: .65;
}

.card--todo[href="#"] {
  pointer-events: auto;
  cursor: default;
}

.card--todo:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--color-border);
  background: var(--color-surface);
}

.card--todo:hover::before {
  opacity: 0;
}

/* ─── Card internals ─────────────────────────────────────── */
.card-icon {
  font-size: 1.75rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: .1rem;
  filter: drop-shadow(0 0 8px color-mix(in srgb, var(--accent) 50%, transparent));
  transition: filter var(--dur) ease;
}

.card:hover .card-icon,
.card:focus-visible .card-icon {
  filter: drop-shadow(0 0 14px color-mix(in srgb, var(--accent) 80%, transparent));
}

.card-body {
  flex: 1;
  min-width: 0;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
}

.card-desc {
  font-size: .82rem;
  color: var(--color-muted);
  margin-top: .3rem;
  line-height: 1.5;
}

.card-desc em {
  color: var(--color-text);
  font-style: normal;
}

.card-note {
  font-size: .75rem;
  color: color-mix(in srgb, var(--color-muted) 70%, transparent);
  margin-top: .4rem;
  font-style: italic;
}

.card-arrow {
  font-size: 1.1rem;
  color: var(--color-muted);
  flex-shrink: 0;
  align-self: center;
  transition: transform var(--dur) var(--ease), color var(--dur) ease;
  margin-left: auto;
}

.card:hover .card-arrow,
.card:focus-visible .card-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

/* ─── Badge ──────────────────────────────────────────────── */
.badge {
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .15em .5em;
  border-radius: 99px;
  background: rgba(255,255,255,.08);
  color: var(--color-muted);
  border: 1px solid rgba(255,255,255,.1);
  vertical-align: middle;
}

/* ─── Footer ─────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: var(--space-lg);
  font-size: .78rem;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
}

/* ─── Reduced motion ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}