/* Korerium — Components */

/* Header / Nav */
.kr-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 15, 0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--kr-border);
}

.kr-nav {
  max-width: var(--kr-max);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kr-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--kr-font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--kr-text);
  letter-spacing: -0.01em;
}
.kr-nav-logo:hover { color: var(--kr-text); }

.kr-nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.kr-nav-links a {
  color: var(--kr-text-muted);
  font-size: 0.95rem;
}
.kr-nav-links a:hover { color: var(--kr-text); }

.kr-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--kr-text);
  cursor: pointer;
  padding: 8px;
}

@media (max-width: 720px) {
  .kr-nav-toggle { display: block; }
  .kr-nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--kr-surface);
    border-bottom: 1px solid var(--kr-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--kr-transition);
  }
  .kr-nav-links.kr-open { max-height: 320px; }
  .kr-nav-links li { width: 100%; }
  .kr-nav-links a {
    display: block;
    padding: 16px 24px;
    width: 100%;
    border-bottom: 1px solid var(--kr-border);
  }
}

/* Buttons */
.kr-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: var(--kr-radius-sm);
  font-size: 0.95rem;
  font-weight: 560;
  font-family: var(--kr-font);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--kr-transition), border-color var(--kr-transition), color var(--kr-transition);
}

.kr-btn-primary {
  background: var(--kr-accent);
  color: #fff;
}
.kr-btn-primary:hover { background: var(--kr-accent-hover); color: #fff; }

.kr-btn-ghost {
  background: transparent;
  border-color: var(--kr-border);
  color: var(--kr-text);
}
.kr-btn-ghost:hover { border-color: var(--kr-accent); color: var(--kr-accent); }

/* Cards */
.kr-card {
  background: var(--kr-surface);
  border: 1px solid var(--kr-border);
  border-radius: var(--kr-radius);
  padding: 28px;
  transition: border-color var(--kr-transition), transform var(--kr-transition);
}
.kr-card:hover { border-color: #3A3A40; }

.kr-grid {
  display: grid;
  gap: 20px;
}
.kr-grid-2 { grid-template-columns: repeat(2, 1fr); }
.kr-grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .kr-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .kr-grid-2, .kr-grid-4 { grid-template-columns: 1fr; }
}

.kr-badge {
  display: inline-block;
  font-family: var(--kr-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 4px 9px;
  border-radius: 100px;
  border: 1px solid var(--kr-border);
  color: var(--kr-text-muted);
}

/* Footer */
.kr-footer {
  border-top: 1px solid var(--kr-border);
  padding: 56px 0 40px;
}

.kr-footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 32px;
}

.kr-footer-tagline {
  color: var(--kr-text-muted);
  font-size: 0.9rem;
  max-width: 320px;
}

.kr-footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.kr-footer-links a {
  color: var(--kr-text-muted);
  font-size: 0.88rem;
}
.kr-footer-links a:hover { color: var(--kr-text); }

.kr-footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--kr-border);
  color: var(--kr-text-muted);
  font-size: 0.82rem;
}

.kr-footer-social {
  display: flex;
  gap: 16px;
}

/* Forms */
.kr-form { display: flex; flex-direction: column; gap: 14px; }
.kr-form input,
.kr-form select,
.kr-form textarea {
  background: var(--kr-surface);
  border: 1px solid var(--kr-border);
  border-radius: var(--kr-radius-sm);
  padding: 13px 14px;
  color: var(--kr-text);
  font-family: var(--kr-font);
  font-size: 0.95rem;
}
.kr-form textarea { min-height: 140px; resize: vertical; }
.kr-form input::placeholder,
.kr-form textarea::placeholder { color: var(--kr-text-muted); }

.kr-form select {
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238A8A8E' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.kr-form select.kr-placeholder { color: var(--kr-text-muted); }
.kr-form select option { color: var(--kr-text); background: var(--kr-surface); }