*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #f0f2f5;
  color: #1a1a2e;
  line-height: 1.6;
  min-height: 100vh;
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #003366;
  margin-bottom: 0.5rem;
}

.lysing {
  color: #555;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

/* ── Flipar (tabs) ────────────────────────────────────────── */
.flipar {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
}

.flipa-takki {
  padding: 0.5rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1.5px solid #003366;
  border-radius: 8px 8px 0 0;
  background: #e8f0fe;
  color: #003366;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.flipa-takki.active {
  background: #003366;
  color: #fff;
}

.flipa-takki:hover:not(.active) {
  background: #d0e0f0;
}

/* ── Form ──────────────────────────────────────────────────── */
.innslattr {
  background: #fff;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  margin-bottom: 1.5rem;
}

.form-rod {
  margin-bottom: 1rem;
}

.form-rod label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.form-rod input[type="text"],
.form-rod input[type="number"],
.form-rod select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  outline: none;
  transition: border-color 0.2s;
}

.form-rod input:focus,
.form-rod select:focus {
  border-color: #003366;
  box-shadow: 0 0 0 2px rgba(0, 51, 102, 0.15);
}

.form-hjalp {
  display: block;
  font-size: 0.8rem;
  color: #888;
  margin-top: 0.25rem;
}

.villa {
  color: #c0392b;
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* ── Toggle hnappar ────────────────────────────────────────── */
.toggle-hnappar {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.toggle-takki {
  padding: 0.35rem 1rem;
  font-size: 0.88rem;
  border: 1.5px solid #003366;
  border-radius: 20px;
  background: #fff;
  color: #003366;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.toggle-takki.active {
  background: #003366;
  color: #fff;
}

.toggle-takki:hover:not(.active) {
  background: #e8f0fe;
}

/* ── Reikna takki ──────────────────────────────────────────── */
.reikna-takki {
  display: block;
  width: 100%;
  padding: 0.7rem 1.4rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: #003366;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 1rem;
}

.reikna-takki:hover {
  background: #004a99;
}

/* ── Reglur lánaflokks ────────────────────────────────────── */
.reglur-kassi {
  margin-top: 0.75rem;
  margin-bottom: 1rem;
}

.reglur-texti {
  background: #f7f9fc;
  border-left: 3px solid #003366;
  border-radius: 0 6px 6px 0;
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: #444;
  line-height: 1.55;
}

.reglur-texti strong {
  display: block;
  margin-bottom: 0.3rem;
  color: #003366;
  font-size: 0.9rem;
}

.reglur-texti ul {
  margin: 0;
  padding-left: 1.2rem;
}

.reglur-texti li {
  margin-bottom: 0.15rem;
}

/* ── Fleiri stillingar ─────────────────────────────────────── */
details.namundanir {
  margin-top: 1rem;
  border-top: 1px solid #eee;
  padding-top: 1rem;
}

details.namundanir summary {
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  color: #003366;
  margin-bottom: 0.75rem;
}

details.namundanir .form-rod {
  margin-bottom: 0.75rem;
}

details.namundanir .form-rod label {
  font-weight: 500;
  font-size: 0.9rem;
}

details.namundanir input[type="number"] {
  max-width: 200px;
}

/* ── Samantektarkort ───────────────────────────────────────── */
.samantekt-kort {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.kort {
  background: #fff;
  border-radius: 8px;
  padding: 1rem 1.25rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.kort-titill {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: #555;
  margin-bottom: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.kort-gildi {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.kort-sundurlidun {
  display: block;
  font-size: 0.72rem;
  color: #888;
  margin-top: 0.2rem;
  line-height: 1.4;
}

.kort-gildi.jadaett { color: #27ae60; }
.kort-gildi.neikvaett { color: #c0392b; }
.kort-gildi.hludlaust { color: #003366; }

/* ── Línurit ───────────────────────────────────────────────── */
.grafikk-umgjord {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  padding: 1.25rem;
  margin-bottom: 0.5rem;
}

.grafikk-stillingar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  margin-bottom: 1rem;
}

.toggle-merkiord {
  font-weight: 600;
  font-size: 0.9rem;
  color: #555;
  white-space: nowrap;
}

.grafikk-takki {
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  border: 1.5px solid #ccc;
  border-radius: 20px;
  background: #fff;
  color: #555;
  cursor: pointer;
  transition: opacity 0.15s, border-color 0.15s;
}

.grafikk-takki:not(.active) {
  opacity: 0.45;
}

.endurgreidsla-litur { border-color: #003366; color: #003366; }
.endurgreidsla-litur.active { background: #003366; color: #fff; }

.aukaskattur-litur { border-color: #27ae60; color: #27ae60; }
.aukaskattur-litur.active { background: #27ae60; color: #fff; }

.heildar-litur { border-color: #8e44ad; color: #8e44ad; }
.heildar-litur.active { background: #8e44ad; color: #fff; }

.kostnadur-litur { border-color: #e74c3c; color: #e74c3c; }
.kostnadur-litur.active { background: #e74c3c; color: #fff; }

.skuld-litur { border-color: #e67e22; color: #e67e22; }
.skuld-litur.active { background: #e67e22; color: #fff; }

#avxtunargraf {
  max-height: 400px;
}

/* ── Neðanmálsgrein ────────────────────────────────────────── */
.nedanmals {
  margin-top: 1rem;
  font-size: 0.82rem;
  color: #777;
  line-height: 1.5;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 600px) {
  main {
    padding: 1rem;
  }

  h1 {
    font-size: 1.4rem;
  }

  .samantekt-kort {
    grid-template-columns: 1fr;
  }

  .kort-gildi {
    font-size: 1.1rem;
  }

  #avxtunargraf {
    max-height: 260px;
  }

  .grafikk-stillingar {
    gap: 0.3rem;
  }

  .toggle-hnappar {
    gap: 0.2rem;
  }

  .toggle-takki {
    font-size: 0.82rem;
    padding: 0.3rem 0.75rem;
  }
}