/*
 Spinnah Web – Base Styles
 Purpose: Shared, minimal CSS used across all Spinnah sites.
 Notes:
 - Keep this small and boring.
 - Prefer semantic classes over one-off styling.
 - Nav system supports .spinnah-nav__* structure (sticky header + mobile menu).
*/

/* =====================================================================
   TOKENS
   ===================================================================== */
:root {
  /* Color tokens */
  --spinnah-bg: #ffffff;
  --spinnah-fg: #121212;
  --spinnah-muted: rgba(18, 18, 18, 0.68);
  --spinnah-accent: #024ddf;

  /* Surfaces */
  --spinnah-surface: rgba(255, 255, 255, 0.78);
  --spinnah-surface-strong: rgba(255, 255, 255, 0.92);
  --spinnah-border: rgba(18, 18, 18, 0.12);
  --spinnah-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);

  /* Layout */
  --spinnah-max-width: 1100px;
  --spinnah-gutter: 20px;
  --spinnah-radius: 16px;

  /* Typography */
  --spinnah-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --spinnah-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Nav */
  --spinnah-nav-height: 68px;
  --spinnah-nav-pad-x: 16px;

  /* Logo size (prevents “gigantic logo” issue) */
  --spinnah-nav-logo-size: 34px;
  --spinnah-nav-gap: 12px;

  /* Toggle */
  --spinnah-toggle-size: 44px;
  --spinnah-toggle-line-w: 18px;
  --spinnah-toggle-line-h: 2px;
  --spinnah-toggle-gap: 6px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --spinnah-bg: #090a0f;
    --spinnah-fg: #f3f4f8;
    --spinnah-muted: rgba(243, 244, 248, 0.68);

    --spinnah-surface: rgba(18, 18, 22, 0.60);
    --spinnah-surface-strong: rgba(18, 18, 22, 0.80);
    --spinnah-border: rgba(243, 244, 248, 0.14);
    --spinnah-shadow: 0 12px 34px rgba(0, 0, 0, 0.42);

    --spinnah-accent: #4d7dff; /* slightly brighter at night */
  }
}

/* =====================================================================
   BASE
   ===================================================================== */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--spinnah-bg);
  color: var(--spinnah-fg);
  font-family: var(--spinnah-font);
}

header, footer { width: 100%; }

img { max-width: 100%; height: auto; }
code, pre { font-family: var(--spinnah-mono); }

main {
  max-width: var(--spinnah-max-width);
  margin: 24px auto 60px;
  padding: var(--spinnah-gutter);
}

/* Global links (body/footer links stay accent-colored) */
a {
  color: var(--spinnah-accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* Helpers */
.spinnah-container {
  max-width: var(--spinnah-max-width);
  margin: 0 auto;
  padding: 0 var(--spinnah-nav-pad-x);
}

.spinnah-muted { color: var(--spinnah-muted); }

.spinnah-card {
  background: var(--spinnah-surface-strong);
  border: 1px solid var(--spinnah-border);
  border-radius: var(--spinnah-radius);
  box-shadow: var(--spinnah-shadow);
}

/* =====================================================================
   NAVIGATION (spinnah-nav__*)
   ===================================================================== */
.spinnah-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--spinnah-nav-height);
  border-bottom: 1px solid var(--spinnah-border);
  background: var(--spinnah-surface);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
}

.spinnah-nav--solid {
  background: var(--spinnah-surface-strong);
}

.spinnah-nav__inner {
  height: var(--spinnah-nav-height);
  max-width: var(--spinnah-max-width);
  margin: 0 auto;
  padding: 0 var(--spinnah-nav-pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

/* Brand (logo + wordmark) */
.spinnah-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--spinnah-nav-gap);
  font-weight: 650;
  font-size: 16px;
  line-height: 1.1;
  color: var(--spinnah-fg);
  text-decoration: none;
}
.spinnah-nav__brand:hover { text-decoration: none; }

.spinnah-nav__logo {
  width: var(--spinnah-nav-logo-size);
  height: var(--spinnah-nav-logo-size);
  flex: 0 0 var(--spinnah-nav-logo-size);
  display: block;
  object-fit: contain;
  border-radius: 9px;
}

/* ---------------------------------------------------------------------
   Light/Dark logo switching (FOR CONTRAST)
   - Light mode: show .spinnah-nav__logo--light  (your DARK logo file)
   - Dark mode: show .spinnah-nav__logo--dark    (your LIGHT/DEFAULT logo file)
   --------------------------------------------------------------------- */
.spinnah-nav__logo--light { display: block; }
.spinnah-nav__logo--dark  { display: none; }

@media (prefers-color-scheme: dark) {
  .spinnah-nav__logo--light { display: none; }
  .spinnah-nav__logo--dark  { display: block; }
}

/* Desktop links */
.spinnah-nav__links {
  display: none;
  align-items: center;
  gap: 14px;
}

.spinnah-nav__link {
  font-weight: 550;
  font-size: 14px;
  line-height: 1;
  color: var(--spinnah-muted);
  padding: 10px 10px;
  border-radius: 12px;
  text-decoration: none;
}
.spinnah-nav__link:hover {
  color: var(--spinnah-fg);
  background: rgba(2, 77, 223, 0.10);
  text-decoration: none;
}

/* ---------------------------------------------------------------------
   Mobile Toggle (FIXED)
   Works with either:
   - 3 lines (ideal hamburger), OR
   - 2 lines (still animates cleanly into an X)
   --------------------------------------------------------------------- */
.spinnah-nav__toggle {
  appearance: none;
  border: 1px solid var(--spinnah-border);
  background: rgba(255, 255, 255, 0.10);
  border-radius: 12px;
  width: var(--spinnah-toggle-size);
  height: 40px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spinnah-toggle-gap);
  cursor: pointer;
  padding: 0;
  overflow: hidden; /* prevents “cut off right side” */
}

@media (prefers-color-scheme: dark) {
  .spinnah-nav__toggle { background: rgba(0, 0, 0, 0.18); }
}

.spinnah-nav__toggle-line {
  display: block;
  width: var(--spinnah-toggle-line-w);
  height: var(--spinnah-toggle-line-h);
  background: var(--spinnah-fg);
  border-radius: 2px;
  opacity: 0.9;
  transform-origin: center;
  transition: transform 0.16s ease, opacity 0.16s ease;
}

/* Open state: if you have 3 lines, we hide the middle and rotate top/bottom */
.spinnah-nav--menu-open .spinnah-nav__toggle-line:nth-child(1) {
  transform: translateY(calc(var(--spinnah-toggle-gap) + 1px)) rotate(45deg);
}

.spinnah-nav--menu-open .spinnah-nav__toggle-line:nth-child(2) {
  opacity: 0;
}

/* If a third line exists, rotate it */
.spinnah-nav--menu-open .spinnah-nav__toggle-line:nth-child(3) {
  transform: translateY(calc(-1 * (var(--spinnah-toggle-gap) + 1px))) rotate(-45deg);
}

/* If you only have 2 lines, make them form the X cleanly */
.spinnah-nav--menu-open .spinnah-nav__toggle-line:nth-child(2):last-child {
  opacity: 0.9;
  transform: translateY(calc(-1 * (var(--spinnah-toggle-gap) + 1px))) rotate(-45deg);
}

/* Mobile menu panel */
.spinnah-nav__menu {
  max-width: var(--spinnah-max-width);
  margin: 0 auto;
  padding: 10px var(--spinnah-nav-pad-x) 14px;
  border-bottom: 1px solid var(--spinnah-border);
  background: var(--spinnah-surface-strong);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
}
.spinnah-nav__menu[hidden] { display: none !important; }

.spinnah-nav__menu-item {
  display: block;
  padding: 12px 12px;
  border-radius: 12px;
  color: var(--spinnah-fg);
  text-decoration: none;
  border: 1px solid transparent;
}
.spinnah-nav__menu-item:hover {
  background: rgba(2, 77, 223, 0.10);
  border-color: rgba(2, 77, 223, 0.16);
  text-decoration: none;
}

/* Desktop breakpoint */
@media (min-width: 860px) {
  .spinnah-nav__links { display: inline-flex; }
  .spinnah-nav__toggle { display: none; }
  .spinnah-nav__menu { display: none !important; }
}

/* =====================================================================
   HERO
   ===================================================================== */
header {
  max-width: var(--spinnah-max-width);
  margin: 48px auto 32px;
  padding: 0 var(--spinnah-gutter);
  text-align: center;
}

header h1 { margin: 0; }

header .tagline {
  margin: 12px auto 0;
  max-width: 680px;
}

/* =====================================================================
   SECTION TITLES
   ===================================================================== */
.spinnah-section-title {
  text-align: center;
  margin: 48px 0 24px;
}

/* =====================================================================
   HEADING-STYLE LINKS (prevents blue/purple heading links)
   ===================================================================== */
.spinnah-card h2 a,
.spinnah-card h2 a:link,
.spinnah-card h2 a:visited,
.spinnah-card h2 a:hover,
.spinnah-card h2 a:active,
.spinnah-card h3 a,
.spinnah-card h3 a:link,
.spinnah-card h3 a:visited,
.spinnah-card h3 a:hover,
.spinnah-card h3 a:active {
  color: var(--spinnah-fg);
  text-decoration: none;
}

.spinnah-card h2 a:hover,
.spinnah-card h3 a:hover {
  text-decoration: underline;
}

/* =====================================================================
   FOOTER
   ===================================================================== */
.spinnah-footer {
  max-width: var(--spinnah-max-width);
  margin: 40px auto 30px;
  padding: 0 var(--spinnah-gutter);
  color: var(--spinnah-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  text-align: center;
}

.spinnah-footer nav {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.spinnah-footer a { color: var(--spinnah-muted); }
.spinnah-footer a:hover { color: var(--spinnah-fg); text-decoration: none; }

.spinnah-footer__rule {
  width: min(var(--spinnah-max-width), calc(100% - (var(--spinnah-gutter) * 2)));
  border: 0;
  border-top: 1px solid var(--spinnah-border);
  margin: 10px 0 4px;
}

.spinnah-footer__copyright {
  font-size: 12px;
  color: var(--spinnah-muted);
}