/* E4 – onepage landing + prihlasovací modal */

.sd-landing {
  --sd-landing-hero: linear-gradient(145deg, #0f2d46 0%, #1e5a8a 48%, #2d7ab5 100%);
  min-height: 100vh;
  background: var(--sd-bg);
}

.sd-landing__header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--sd-border);
}

.sd-landing__brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--sd-primary);
  text-decoration: none;
}

.sd-landing__brand span {
  color: var(--sd-muted);
  font-weight: 500;
  font-size: 0.85rem;
  margin-left: 0.35rem;
}

.sd-landing__auth {
  display: flex;
  align-items: center;
  gap: 0.5rem 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.sd-landing__user {
  font-size: 0.9rem;
  color: var(--sd-muted);
}

.sd-landing__user strong {
  color: var(--sd-text);
}

.sd-landing-hero {
  background: var(--sd-landing-hero);
  color: #fff;
  padding: 3.5rem 1.5rem 4rem;
}

.sd-landing-hero__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 900px) {
  .sd-landing-hero__inner {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }
}

.sd-landing-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.65rem);
  line-height: 1.15;
  margin: 0 0 1rem;
}

.sd-landing-hero__lead {
  font-size: 1.1rem;
  opacity: 0.92;
  max-width: 36rem;
  margin: 0 0 1.5rem;
}

.sd-landing-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.sd-landing-badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.sd-landing-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.sd-landing-hero__panel {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 1.25rem 1.35rem;
}

.sd-landing-hero__panel h2 {
  font-size: 1rem;
  margin: 0 0 0.75rem;
  font-weight: 600;
}

.sd-landing-hero__panel ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.92rem;
  opacity: 0.95;
}

.sd-landing-hero__panel li + li {
  margin-top: 0.35rem;
}

.sd-landing-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.sd-landing-section h2 {
  font-size: 1.5rem;
  margin: 0 0 0.35rem;
  color: var(--sd-primary);
}

.sd-landing-section__sub {
  color: var(--sd-muted);
  margin: 0 0 1.75rem;
}

.sd-landing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.sd-landing-card {
  background: var(--sd-surface);
  border: 1px solid var(--sd-border);
  border-radius: var(--sd-radius);
  padding: 1.15rem 1.25rem;
  box-shadow: var(--sd-shadow);
}

.sd-landing-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.sd-landing-card p {
  margin: 0;
  color: var(--sd-muted);
  font-size: 0.92rem;
}

.sd-landing-steps {
  display: grid;
  gap: 1rem;
}

@media (min-width: 700px) {
  .sd-landing-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.sd-landing-step {
  text-align: center;
  padding: 1rem;
}

.sd-landing-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--sd-primary);
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.65rem;
}

.sd-landing-cta {
  text-align: center;
  padding: 2.5rem 1.5rem 3rem;
  background: var(--sd-surface);
  border-top: 1px solid var(--sd-border);
}

.sd-landing-footer {
  text-align: center;
  padding: 1.25rem 1.5rem 2rem;
  font-size: 0.85rem;
  color: var(--sd-muted);
}

.sd-btn--on-dark {
  background: #fff;
  color: var(--sd-primary);
  border-color: #fff;
}

.sd-btn--on-dark:hover {
  background: #eef4f9;
}

.sd-btn--ghost-on-dark {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}

.sd-btn--ghost-on-dark:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Modal prihlásenia */
.sd-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.sd-modal[hidden] {
  display: none !important;
}

.sd-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 30, 45, 0.55);
}

.sd-modal__dialog {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: var(--sd-surface);
  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(26, 35, 50, 0.2);
  padding: 1.5rem 1.5rem 1.25rem;
}

.sd-modal__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.sd-modal__head h2 {
  margin: 0;
  font-size: 1.25rem;
}

.sd-modal__close {
  border: none;
  background: transparent;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--sd-muted);
  padding: 0.15rem 0.35rem;
}

.sd-modal__close:hover {
  color: var(--sd-text);
}

.sd-modal__hint {
  font-size: 0.85rem;
  color: var(--sd-muted);
  margin: 0 0 1rem;
}

.sd-modal__foot {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--sd-muted);
  text-align: center;
}

body.sd-modal-open {
  overflow: hidden;
}