/* Baltic Dual Use Hackathon — site CSS
   CSS custom properties, keyframes, and base styles.
   Tailwind utility classes are handled by @tailwindcss/browser CDN in header.php.
*/

:root {
  --radius: 0.5rem;

  /* Brand palette — Navy #012957 · Teal #0097A5 */
  --background: oklch(0.25 0.10 260);
  --foreground: oklch(0.98 0 0);
  --surface: oklch(0.30 0.09 260);
  --surface-elevated: oklch(0.34 0.08 260);
  --card: oklch(0.30 0.09 260);
  --card-foreground: oklch(0.98 0 0);
  --popover: oklch(0.30 0.09 260);
  --popover-foreground: oklch(0.98 0 0);

  --primary: oklch(0.66 0.12 200);
  --primary-foreground: oklch(0.18 0 0);
  --secondary: oklch(0.34 0.08 260);
  --secondary-foreground: oklch(0.98 0 0);
  --muted: oklch(0.34 0.08 260);
  --muted-foreground: oklch(0.80 0.03 220);
  --accent: oklch(0.66 0.12 200);
  --accent-foreground: oklch(0.18 0 0);
  --destructive: oklch(0.62 0.22 25);
  --destructive-foreground: oklch(0.98 0 0);
  --border: oklch(1 0 0 / 14%);
  --input: oklch(1 0 0 / 16%);
  --ring: oklch(0.66 0.12 200);

  --accent-quantum: oklch(0.66 0.12 200);
  --accent-ai: oklch(0.74 0.10 200);
  --accent-space: oklch(0.55 0.10 245);
  --accent-robotics: oklch(0.66 0.12 200);

  --gradient-hero: radial-gradient(ellipse at 50% 0%, oklch(0.36 0.10 240) 0%, oklch(0.20 0.09 260) 70%);
  --gradient-radar: radial-gradient(circle, color-mix(in oklab, var(--accent-quantum) 28%, transparent) 0%, transparent 70%);
  --gradient-baltic: linear-gradient(
    180deg,
    oklch(0.34 0.09 240) 0%,
    oklch(0.28 0.10 250) 35%,
    oklch(0.22 0.10 260) 70%,
    oklch(0.16 0.08 260) 100%
  );

  --shadow-glow-quantum: 0 0 40px -8px color-mix(in oklab, var(--accent-quantum) 60%, transparent);
  --shadow-glow-ai: 0 0 40px -8px color-mix(in oklab, var(--accent-ai) 60%, transparent);
  --shadow-glow-space: 0 0 40px -8px color-mix(in oklab, var(--accent-space) 60%, transparent);
  --shadow-glow-robotics: 0 0 40px -8px color-mix(in oklab, var(--accent-robotics) 60%, transparent);
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background-color: var(--background);
  color: var(--foreground);
  font-family: "Inter", ui-sans-serif, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4 {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  letter-spacing: -0.01em;
}
img, svg { max-width: 100%; display: block; }

/* Radar animations */
@keyframes radar-ping {
  0%   { transform: scale(0.2); opacity: 0.7; }
  80%  { opacity: 0.05; }
  100% { transform: scale(1); opacity: 0; }
}
@keyframes radar-sweep {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.radar-ring {
  animation: radar-ping 4s cubic-bezier(0, 0, 0.2, 1) infinite;
  transform-origin: center;
}
.radar-sweep {
  animation: radar-sweep 6s linear infinite;
  transform-origin: center;
}

/* Baltic wave animations */
@keyframes baltic-drift {
  0%   { transform: translateX(0); }
  50%  { transform: translateX(-3%); }
  100% { transform: translateX(0); }
}
.baltic-wave-slow { animation: baltic-drift 18s ease-in-out infinite; }
.baltic-wave-mid  { animation: baltic-drift 12s ease-in-out infinite; }
.baltic-wave-fast { animation: baltic-drift 8s  ease-in-out infinite; }

@keyframes baltic-float {
  0%, 100% { transform: translateY(0); opacity: 0.25; }
  50%      { transform: translateY(-14px); opacity: 0.7; }
}
.baltic-particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 9999px;
  background: var(--accent-quantum);
  box-shadow: 0 0 8px 2px color-mix(in oklab, var(--accent-quantum) 60%, transparent);
  animation: baltic-float 6s ease-in-out infinite;
}

/* Reveal animation — initial state */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* FAQ accordion transition */
.faq-content {
  overflow: hidden;
}
.faq-chevron.is-open {
  transform: rotate(180deg);
}

/* Language switcher active state */
.lang-btn.is-active {
  background-color: var(--accent-quantum);
  color: var(--primary-foreground);
}

/* Mobile nav padding offset for fixed header */
main#main-content {
  padding-top: 0;
}

/* WordPress admin bar offset */
.admin-bar #site-header {
  top: 32px;
}
@media screen and (max-width: 782px) {
  .admin-bar #site-header {
    top: 46px;
  }
}

/* Newsletter */
#newsletter-loader {
  display: none;
  position: absolute;
  inset: 0;
  background: color-mix(in oklab, var(--background) 82%, transparent);
  border-radius: var(--radius);
  align-items: center;
  justify-content: center;
}

.newsletter-message {
  display: none;
}