/* ShowSlide — NBIT brand tokens and component overrides on top of Pico CSS. */

:root {
  /* Brand */
  --color-brand:      #00579d;
  --color-brand-deep: #133f62;
  --color-accent:     #ffbf1d;
  --color-sky:        #59bfef;
  --color-red:        #e23a39;
  --color-ink:        #162334;

  /* Neutrals */
  --color-paper:      oklch(98.6% 0.003 245);
  --color-surface:    oklch(96.6% 0.012 245);
  --color-ink-soft:   oklch(45%   0.03  250);
  --color-line:       oklch(89%   0.012 245);
  --color-paper-dim:  oklch(82%   0.03  235);

  /* Dark sections */
  --color-night:      #162334;
  --color-night-2:    #133f62;
  --color-night-line: oklch(42% 0.05 245);

  /* Shape / motion */
  --radius: 0.875rem;
  --shadow-soft: 0 1px 2px oklch(30% 0.07 257 / 0.05),
                 0 12px 32px -16px oklch(30% 0.07 257 / 0.18);
  --shadow-lift: 0 2px 6px oklch(30% 0.07 257 / 0.06),
                 0 24px 56px -20px oklch(30% 0.07 257 / 0.24);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);

  --font-sans: "Archivo Variable", "Archivo", ui-sans-serif, system-ui, sans-serif;

  /* Pico v2 variable overrides */
  --pico-font-family: var(--font-sans);
  --pico-border-radius: var(--radius);
  --pico-background-color: var(--color-surface);
  --pico-color: var(--color-ink);
  --pico-primary: var(--color-brand);
  --pico-primary-background: var(--color-brand);
  --pico-primary-hover: var(--color-brand-deep);
  --pico-primary-hover-background: var(--color-brand-deep);
  --pico-primary-underline: var(--color-brand);
  --pico-primary-inverse: var(--color-paper);
  --pico-card-background-color: var(--color-paper);
  --pico-card-border-color: var(--color-line);
  --pico-card-box-shadow: var(--shadow-soft);
  --pico-card-sectioning-background-color: var(--color-paper);
  --pico-muted-color: var(--color-ink-soft);
  --pico-muted-border-color: var(--color-line);
  --pico-table-border-color: var(--color-line);
  --pico-form-element-background-color: var(--color-paper);
  --pico-form-element-border-color: var(--color-line);
  --pico-form-element-focus-color: var(--color-brand);
}

body {
  background: var(--color-surface);
  color: var(--color-ink);
}

h1, h2, h3 {
  font-stretch: 113%;
  font-weight: 780;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--color-brand);
  text-wrap: balance;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 620;
  font-stretch: 106%;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}
.eyebrow::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  flex: none;
  background: var(--color-accent);
}

.mark { color: var(--color-accent); }

.numeral {
  font-stretch: 113%;
  font-weight: 760;
  font-variant-numeric: tabular-nums;
  color: var(--color-brand);
}

/* Top nav */
nav.container {
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-line);
  padding-block: 0.75rem;
}
nav.container .brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
nav.container .brand-mark img { display: block; height: 26px; width: auto; }
nav.container .brand-mark strong {
  font-stretch: 113%;
  font-weight: 780;
  color: var(--color-brand);
  letter-spacing: -0.01em;
}

article {
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-line);
  background: var(--color-paper);
}

button, [role="button"], input[type="submit"] {
  border-radius: var(--radius);
  transition: background-color 0.2s var(--ease-out-quint), border-color 0.2s var(--ease-out-quint), color 0.2s var(--ease-out-quint);
}
button.secondary, [role="button"].secondary {
  background: var(--color-paper);
  border-color: var(--color-line);
  color: var(--color-ink);
}
button.secondary:hover, [role="button"].secondary:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
}

input, select, textarea {
  border-radius: calc(var(--radius) * 0.6);
}

/* Dark band utility — footer / final CTA sections */
.band-dark {
  background: var(--color-night);
  color: var(--color-paper-dim);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}
.band-dark h1, .band-dark h2, .band-dark h3 { color: var(--color-paper); }
.band-dark .eyebrow { color: var(--color-paper-dim); }
.band-dark a { color: var(--color-sky); }

/* Faint round-logo watermark, per brand guide: ~6% opacity, hidden on small screens */
.watermark { position: relative; isolation: isolate; }
.watermark::before {
  content: "";
  position: absolute;
  inset: -15% -10% auto auto;
  width: min(50%, 26rem);
  aspect-ratio: 1;
  background: var(--color-brand);
  -webkit-mask: url('https://nbit.com/logo-round-white.webp') center / contain no-repeat;
          mask: url('https://nbit.com/logo-round-white.webp') center / contain no-repeat;
  opacity: 0.06;
  z-index: -1;
  pointer-events: none;
}
@media (max-width: 640px) {
  .watermark::before { display: none; }
}

.badge-online { color: var(--color-brand); font-weight: 600; }
.badge-offline { color: var(--color-red); font-weight: 600; }

.token-banner {
  background: color-mix(in oklch, var(--color-accent) 16%, var(--color-paper));
  border: 1px solid var(--color-accent);
  padding: 1rem;
  border-radius: var(--radius);
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    animation: reveal-up 0.5s var(--ease-out-quint) both;
  }
  @keyframes reveal-up {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: none; }
  }
}