/* ============================================================
   PPPA — Publiskās un Privātās Partnerības Asociācija
   Design system: classic PPPA blue + turquoise accent
   ============================================================ */

:root {
  /* Brand palette */
  --pppa-blue-900: #0a2540;     /* deepest — headings, hero bg */
  --pppa-blue-800: #103663;     /* primary brand */
  --pppa-blue-700: #1a4d8c;     /* hover, secondary */
  --pppa-blue-600: #2563a8;     /* links */
  --pppa-blue-50:  #eef4fb;     /* soft tint backgrounds */

  --pppa-turquoise: #14a098;    /* accent — CTAs, highlights */
  --pppa-turquoise-light: #3ec5be;

  --ink-900: #0e1726;           /* body text */
  --ink-700: #3b4658;
  --ink-500: #6b7686;
  --ink-300: #aab3c0;

  --sand-50: #fafaf8;           /* page background */
  --sand-100: #f3f1ec;          /* alt section */
  --line: #e3e6ec;

  --shadow-sm: 0 1px 3px rgba(10,37,64,.06), 0 1px 2px rgba(10,37,64,.04);
  --shadow-md: 0 4px 16px rgba(10,37,64,.08), 0 2px 6px rgba(10,37,64,.05);
  --shadow-lg: 0 20px 50px rgba(10,37,64,.12), 0 8px 20px rgba(10,37,64,.06);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --container: 1180px;
  --container-narrow: 880px;
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--pppa-blue-600); text-decoration: none; }
a:hover { color: var(--pppa-turquoise); text-decoration: underline; text-underline-offset: 3px; }

/* ── Typography ────────────────────────────────────────── */
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: var(--ink-900);
  background: var(--sand-50);
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}
h1, h2, h3, h4 {
  font-family: inherit;
  color: var(--pppa-blue-900);
  letter-spacing: -0.02em;
  margin: 0 0 .6em;
}
h1 { font-size: clamp(2rem, 4vw, 3.25rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.5rem, 2.5vw, 2.25rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: 1.3rem; font-weight: 700; }
h4 { font-size: 1.05rem; font-weight: 600; }
p  { margin: 0 0 1em; }
.lead { font-size: 1.2rem; color: var(--ink-700); line-height: 1.5; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .8rem;
  font-weight: 600;
  color: var(--pppa-turquoise);
  margin-bottom: .8rem;
}

/* ── Container ─────────────────────────────────────────── */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 1.5rem; }

/* ── Header ────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 1rem; padding-bottom: 1rem;
}
.brand {
  display: flex; align-items: center; gap: .75rem;
  font-weight: 700; color: var(--pppa-blue-900);
  font-size: 1.05rem; letter-spacing: -0.01em;
}
.brand .brand-mark {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--pppa-blue-700), var(--pppa-turquoise));
  border-radius: 8px;
  display: grid; place-items: center;
  color: white; font-weight: 800; font-size: 1rem;
  letter-spacing: 0;
}
.brand small { display: block; font-size: .72rem; color: var(--ink-500); font-weight: 500; }
.nav {
  display: flex; gap: 1.75rem; align-items: center;
  font-size: .92rem; font-weight: 500;
}
.nav a { color: var(--ink-700); }
.nav a:hover, .nav a.active { color: var(--pppa-blue-800); text-decoration: none; }
.lang-toggle {
  font-size: .78rem; color: var(--ink-500);
  border: 1px solid var(--line);
  padding: .35rem .7rem; border-radius: 999px;
  font-weight: 500;
}
.lang-toggle .active { color: var(--pppa-blue-800); font-weight: 600; }
@media (max-width: 760px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
}

/* ── Hero ──────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  background:
    radial-gradient(ellipse at 80% 10%, rgba(20,160,152,.12), transparent 50%),
    radial-gradient(ellipse at 0% 80%, rgba(26,77,140,.10), transparent 50%),
    linear-gradient(180deg, #fff 0%, var(--sand-50) 100%);
  overflow: hidden;
}
.hero h1 { max-width: 18ch; }
.hero .lead { max-width: 56ch; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }

/* ── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .85rem 1.4rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform .12s, box-shadow .15s, background .15s;
  white-space: nowrap;
}
.btn-primary { background: var(--pppa-blue-800); color: white; }
.btn-primary:hover { background: var(--pppa-blue-700); color: white; text-decoration: none; box-shadow: var(--shadow-md); }
.btn-accent { background: var(--pppa-turquoise); color: white; }
.btn-accent:hover { background: var(--pppa-turquoise-light); color: white; text-decoration: none; box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--pppa-blue-800); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--pppa-blue-800); background: white; color: var(--pppa-blue-800); text-decoration: none; }
.btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2.2; }

/* ── Banner — Sandbox announcement ─────────────────────── */
.sandbox-banner {
  background: linear-gradient(110deg, var(--pppa-blue-900) 0%, var(--pppa-blue-800) 55%, #1a5d8e 100%);
  color: white;
  padding: 3.5rem 0;
  position: relative;
  overflow: hidden;
}
.sandbox-banner::before {
  content: '';
  position: absolute; top: -50%; right: -10%;
  width: 60%; height: 200%;
  background: radial-gradient(ellipse at center, rgba(20,160,152,.25), transparent 60%);
  pointer-events: none;
}
.sandbox-banner .container { position: relative; }
.sandbox-banner .eyebrow { color: var(--pppa-turquoise-light); }
.sandbox-banner h2 { color: white; max-width: 22ch; }
.sandbox-banner p { color: rgba(255,255,255,.85); max-width: 60ch; font-size: 1.08rem; }
.sandbox-banner .badge {
  display: inline-flex; gap: .5rem; align-items: center;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  padding: .35rem .8rem;
  border-radius: 999px;
  font-size: .8rem;
  letter-spacing: .04em;
  margin-bottom: 1rem;
}
.sandbox-banner .badge::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--pppa-turquoise-light);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--pppa-turquoise-light);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: .6; }
  50% { opacity: 1; }
}

/* ── Sections ──────────────────────────────────────────── */
section { padding: 4rem 0; }
section.alt { background: white; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
section.sand { background: var(--sand-100); }

/* ── Cards ─────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: transform .15s, box-shadow .15s, border-color .15s;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--pppa-turquoise);
}
.card .tag {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--pppa-turquoise);
  font-weight: 700;
  margin-bottom: .6rem;
}
.card .meta {
  font-size: .82rem;
  color: var(--ink-500);
  margin-bottom: .4rem;
}
.card h3 { font-size: 1.15rem; margin-bottom: .6rem; }
.card p { font-size: .95rem; color: var(--ink-700); margin-bottom: 1rem; }
.card .more {
  font-size: .9rem;
  font-weight: 600;
  color: var(--pppa-blue-700);
}

/* ── Call to action blocks ─────────────────────────────── */
.cta-blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
}
.cta-block {
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: 2rem;
  border-top: 4px solid var(--pppa-blue-700);
}
.cta-block.accent { border-top-color: var(--pppa-turquoise); }
.cta-block h3 { color: var(--pppa-blue-800); font-size: 1.15rem; margin-bottom: .8rem; }
.cta-block p { color: var(--ink-700); font-size: .98rem; margin: 0; }
@media (max-width: 760px) { .cta-blocks { grid-template-columns: 1fr; } }

/* ── Board cards ───────────────────────────────────────── */
.board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.board-member {
  background: white;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  border: 1px solid var(--line);
}
.board-member .avatar {
  width: 96px; height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--pppa-blue-700), var(--pppa-turquoise));
  margin: 0 auto 1rem;
  display: grid; place-items: center;
  color: white;
  font-weight: 700;
  font-size: 1.8rem;
  letter-spacing: -.04em;
}
.board-member h4 { margin: 0 0 .25rem; }
.board-member .role { font-size: .85rem; color: var(--ink-500); margin: 0 0 .8rem; }
.board-member .linkedin {
  font-size: .82rem; font-weight: 500;
  display: inline-flex; gap: .3rem; align-items: center;
}

/* ── Member logo grid ──────────────────────────────────── */
.members {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}
.member-logo {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1rem;
  display: grid; place-items: center;
  min-height: 80px;
  color: var(--ink-700);
  font-weight: 600;
  font-size: .9rem;
  text-align: center;
  transition: border-color .15s, transform .15s;
}
.member-logo:hover { border-color: var(--pppa-turquoise); transform: translateY(-2px); }

/* ── Footer ────────────────────────────────────────────── */
.site-footer {
  background: var(--pppa-blue-900);
  color: rgba(255,255,255,.8);
  padding: 3.5rem 0 2rem;
  font-size: .92rem;
}
.site-footer h4 { color: white; font-size: 1rem; margin-bottom: 1rem; }
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.site-footer a { color: rgba(255,255,255,.7); }
.site-footer a:hover { color: var(--pppa-turquoise-light); text-decoration: none; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .5rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.5rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-size: .82rem;
  color: rgba(255,255,255,.55);
}
@media (max-width: 760px) {
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.75rem; }
}

/* ── Section heading row ───────────────────────────────── */
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem;
  margin-bottom: 2.5rem;
}
.section-head h2 { margin: 0; }
.section-head .link-more { font-weight: 600; font-size: .95rem; }

/* ── Utilities ─────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.muted { color: var(--ink-500); }