/* ===========================================================
   Hetuopas.fi — Shared Design System
   =========================================================== */

:root {
  --primary: #1E4FD8;
  --primary-dark: #163CA6;
  --primary-light: #EAF0FF;
  --accent: #16A34A;
  --accent-light: #ECFDF3;
  --danger: #DC2626;
  --danger-light: #FEF2F2;
  --warn: #D97706;
  --ink: #1F2937;
  --ink-soft: #374151;
  --muted: #6B7280;
  --dim: #9CA3AF;
  --bg: #FFFFFF;
  --bg-alt: #F7F9FC;
  --border: #E4E9F2;
  --shadow: rgba(17, 24, 39, 0.07);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 999;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  font-weight: 700;
  font-size: 20px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo:hover { text-decoration: none; }
.logo .dot { color: var(--primary); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
}
.main-nav a:hover { background: var(--primary-light); color: var(--primary); text-decoration: none; }
.main-nav a.is-active { color: var(--primary); background: var(--primary-light); }

.nav-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: 0.2s;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 20px 16px;
    gap: 2px;
    display: none;
    box-shadow: 0 12px 24px var(--shadow);
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 12px; }
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, var(--primary-light) 0%, #fff 100%);
  padding: 56px 0 40px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(28px, 4.5vw, 40px);
  font-weight: 800;
  margin: 0 0 14px;
  color: var(--ink);
}
.hero p.lede {
  max-width: 680px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: 17px;
}

/* ---------- Tool cards / grid ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin: 36px 0;
}
.tool-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 2px 10px var(--shadow);
  transition: transform 0.15s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px var(--shadow); text-decoration: none; }
.tool-card .icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 4px;
}
.tool-card h3 { margin: 0; font-size: 17px; color: var(--ink); }
.tool-card p { margin: 0; color: var(--muted); font-size: 14px; }
.tool-card .go { margin-top: auto; color: var(--primary); font-weight: 600; font-size: 14px; }

/* ---------- Sections / prose ---------- */
main { display: block; }
.section { padding: 40px 0; }
.section-alt { background: var(--bg-alt); }
h2 { font-size: 26px; font-weight: 800; margin: 0 0 16px; color: var(--ink); }
h3 { font-size: 19px; font-weight: 700; margin: 28px 0 10px; color: var(--ink); }
.prose p { margin: 0 0 14px; color: var(--ink-soft); font-size: 16px; }
.prose ul, .prose ol { color: var(--ink-soft); font-size: 16px; padding-left: 22px; }
.prose li { margin-bottom: 6px; }

/* ---------- Tool interface ---------- */
.tool-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 4px 20px var(--shadow);
  margin: 28px 0;
}
.field-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.field-input, select.field-input {
  width: 100%;
  height: 50px;
  padding: 0 16px;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field-input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-light); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 16px; }
@media (max-width: 560px) { .field-row { grid-template-columns: 1fr; } }
.field-group { margin-bottom: 16px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 26px;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #3B6DF0);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(30,79,216,0.25); text-decoration: none; }
.btn:active { transform: translateY(0); }
.btn-ghost {
  background: #fff;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-full { width: 100%; }

.result-box {
  margin-top: 20px;
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: var(--bg-alt);
  border: 1.5px solid var(--border);
  display: none;
}
.result-box.show { display: block; }
.result-box.ok { background: var(--accent-light); border-color: #A7E4BC; }
.result-box.bad { background: var(--danger-light); border-color: #F5B8B4; }
.result-headline {
  font-size: 22px;
  font-weight: 800;
  margin: 0 0 6px;
}
.result-headline.ok-text { color: var(--accent); }
.result-headline.bad-text { color: var(--danger); }
.result-detail { color: var(--ink-soft); font-size: 15px; margin: 0; }

.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}
.stat-row:last-child { border-bottom: none; }
.stat-row .k { color: var(--muted); }
.stat-row .v { font-weight: 700; color: var(--ink); }

.copy-msg {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.2s;
  margin-left: 10px;
}
.copy-msg.show { opacity: 1; }

.error-msg {
  color: var(--danger);
  font-size: 14px;
  margin-top: 8px;
  display: none;
}
.error-msg.show { display: block; }

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 20px; color: var(--primary); }
.faq-item[open] summary::after { content: '–'; }
.faq-item p { margin: 10px 0 0; color: var(--ink-soft); }

/* ---------- Related tools box ---------- */
.related-box {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
}
.related-box h3 { margin-top: 0; }
.related-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; padding: 0; list-style: none; }
.related-list a {
  display: inline-block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
}
.related-list a:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }

/* ---------- Disclaimer note ---------- */
.notice {
  display: flex;
  gap: 12px;
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 14px;
  color: #92400E;
  margin: 20px 0;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #111827;
  color: #D1D5DB;
  padding: 48px 0 24px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 {
  color: #fff;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 14px;
}
.footer-grid p { color: #9CA3AF; font-size: 14px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 10px; }
.footer-grid a { color: #D1D5DB; font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid #1F2937;
  margin-top: 32px;
  padding-top: 20px;
  font-size: 13px;
  color: #6B7280;
  text-align: center;
}

/* ---------- Cookie banner ---------- */
#cookie-banner {
  position: fixed;
  left: 16px; right: 16px; bottom: 16px;
  max-width: 620px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(17,24,39,0.18);
  padding: 20px 22px;
  z-index: 999;
  display: none;
}
#cookie-banner.show { display: block; }
#cookie-banner p { margin: 0 0 14px; font-size: 14px; color: var(--ink-soft); }
#cookie-banner .cookie-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 13px; color: var(--muted); margin: 18px 0 0; }
.breadcrumb a { color: var(--muted); }
.breadcrumb .sep { margin: 0 6px; }