/* Kneipenfood UI Components — v1.0
   Hessisch Lichtenau · 2025
   Requires:  brand-tokens.css  (load first)
*/

/* === BUTTONS === */

.kf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--kf-space-2);
  font-family: var(--kf-font-body);
  font-weight: var(--kf-weight-semibold);
  font-size: var(--kf-text-base);
  line-height: 1;
  padding: 14px 22px;
  border-radius: var(--kf-radius-md);
  border: 1.5px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--kf-motion-fast) var(--kf-ease-out);
  white-space: nowrap;
  letter-spacing: 0.005em;
}

.kf-btn:focus-visible {
  outline: none;
  box-shadow: var(--kf-shadow-focus);
}

/* Primary — Bordeaux */
.kf-btn--primary {
  background: var(--kf-bordeaux);
  color: var(--kf-chalk);
  border-color: var(--kf-bordeaux);
}
.kf-btn--primary:hover {
  background: var(--kf-bordeaux-deep);
  border-color: var(--kf-bordeaux-deep);
  transform: translateY(-1px);
  box-shadow: var(--kf-shadow-button);
}
.kf-btn--primary:active { transform: translateY(0); }

/* Secondary — Holz */
.kf-btn--secondary {
  background: var(--kf-wood);
  color: var(--kf-chalk);
  border-color: var(--kf-wood);
}
.kf-btn--secondary:hover {
  background: var(--kf-ink);
  border-color: var(--kf-ink);
  transform: translateY(-1px);
}

/* Ghost / Outline */
.kf-btn--ghost {
  background: transparent;
  color: var(--kf-bordeaux);
  border-color: var(--kf-bordeaux);
}
.kf-btn--ghost:hover {
  background: var(--kf-bordeaux-soft);
}

/* Link */
.kf-btn--link {
  background: transparent;
  color: var(--kf-bordeaux);
  border: none;
  padding: 4px 0;
  position: relative;
}
.kf-btn--link::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: currentColor;
  transform-origin: left center;
  transition: transform var(--kf-motion-fast) var(--kf-ease-out);
}
.kf-btn--link:hover::after { transform: scaleX(1.05); }

/* Sizes */
.kf-btn--sm { padding: 8px 14px; font-size: var(--kf-text-sm); }
.kf-btn--lg { padding: 18px 28px; font-size: var(--kf-text-md); }

/* Disabled */
.kf-btn:disabled,
.kf-btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* On dark surfaces */
.kf-on-dark .kf-btn--primary {
  background: var(--kf-brass);
  border-color: var(--kf-brass);
  color: var(--kf-wood);
}
.kf-on-dark .kf-btn--primary:hover {
  background: var(--kf-brass-light);
  border-color: var(--kf-brass-light);
}
.kf-on-dark .kf-btn--ghost {
  color: var(--kf-chalk);
  border-color: rgba(245, 237, 216, 0.4);
}
.kf-on-dark .kf-btn--ghost:hover {
  background: rgba(245, 237, 216, 0.08);
  border-color: var(--kf-chalk);
}

/* === FORM INPUTS === */

.kf-field { display: flex; flex-direction: column; gap: var(--kf-space-2); }
.kf-label {
  font-family: var(--kf-font-body);
  font-weight: var(--kf-weight-semibold);
  font-size: var(--kf-text-sm);
  color: var(--kf-wood);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.kf-hint {
  font-family: var(--kf-font-italic);
  font-style: italic;
  font-size: var(--kf-text-sm);
  color: var(--kf-wood-mid);
}
.kf-error {
  font-family: var(--kf-font-body);
  font-weight: var(--kf-weight-semibold);
  font-size: var(--kf-text-sm);
  color: var(--kf-error);
}

.kf-input,
.kf-textarea,
.kf-select {
  font-family: var(--kf-font-body);
  font-size: var(--kf-text-base);
  font-weight: var(--kf-weight-regular);
  color: var(--kf-wood);
  background: var(--kf-cream);
  border: 1.5px solid var(--kf-paper-dark);
  border-radius: var(--kf-radius-md);
  padding: 12px 14px;
  outline: none;
  transition: border-color var(--kf-motion-fast) var(--kf-ease-out),
              box-shadow var(--kf-motion-fast) var(--kf-ease-out);
  width: 100%;
  box-sizing: border-box;
}
.kf-input:hover,
.kf-textarea:hover,
.kf-select:hover { border-color: var(--kf-wood-mid); }
.kf-input:focus,
.kf-textarea:focus,
.kf-select:focus {
  border-color: var(--kf-bordeaux);
  box-shadow: var(--kf-shadow-focus);
}
.kf-input::placeholder,
.kf-textarea::placeholder {
  color: var(--kf-wood-mid);
  opacity: 0.6;
  font-style: italic;
}
.kf-textarea { resize: vertical; min-height: 96px; line-height: 1.5; }

.kf-input[aria-invalid="true"],
.kf-textarea[aria-invalid="true"] {
  border-color: var(--kf-error);
}

/* Checkbox & Radio */
.kf-check {
  display: inline-flex;
  align-items: flex-start;
  gap: var(--kf-space-3);
  cursor: pointer;
  font-family: var(--kf-font-body);
  font-size: var(--kf-text-base);
  color: var(--kf-wood);
  line-height: 1.4;
}
.kf-check input {
  appearance: none;
  width: 20px; height: 20px;
  border: 1.5px solid var(--kf-wood-mid);
  border-radius: 4px;
  margin: 0;
  flex-shrink: 0;
  background: var(--kf-cream);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--kf-motion-fast) var(--kf-ease-out);
}
.kf-check input[type="radio"] { border-radius: 50%; }
.kf-check input:checked {
  background: var(--kf-bordeaux);
  border-color: var(--kf-bordeaux);
}
.kf-check input[type="checkbox"]:checked::after {
  content: "";
  width: 12px;
  height: 12px;
  background-color: var(--kf-chalk);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / contain no-repeat;
}
.kf-check input[type="radio"]:checked::after {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%; background: var(--kf-chalk);
}
.kf-check input:focus-visible { box-shadow: var(--kf-shadow-focus); }

/* === BADGES === */

.kf-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--kf-font-body);
  font-weight: var(--kf-weight-semibold);
  font-size: var(--kf-text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--kf-radius-pill);
  background: var(--kf-paper);
  color: var(--kf-wood-mid);
  border: 1px solid var(--kf-paper-dark);
}

.kf-badge--veg { background: var(--kf-success-soft); color: #2D6B47; border-color: rgba(91, 173, 122, 0.3); }
.kf-badge--vegan { background: var(--kf-success-soft); color: #1F5237; border-color: rgba(91, 173, 122, 0.3); }
.kf-badge--neu { background: var(--kf-bordeaux); color: var(--kf-chalk); border-color: var(--kf-bordeaux); }
.kf-badge--limitiert { background: var(--kf-wood); color: var(--kf-chalk); border-color: var(--kf-wood); }
.kf-badge--sold { background: var(--kf-paper-dark); color: var(--kf-wood-mid); border-color: var(--kf-paper-dark); text-decoration: line-through; }
.kf-badge--regional { background: var(--kf-brass); color: var(--kf-wood); border-color: var(--kf-brass); }
.kf-badge--luftgetrocknet {
  background: transparent;
  color: var(--kf-wood-mid);
  border: 1px dashed var(--kf-wood-mid);
  font-family: var(--kf-font-italic);
  font-style: italic;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

/* === CARDS === */

.kf-card {
  background: var(--kf-cream);
  border: 1px solid var(--kf-paper-dark);
  border-radius: var(--kf-radius-lg);
  padding: var(--kf-space-7);
  display: flex;
  flex-direction: column;
  gap: var(--kf-space-4);
  transition: all var(--kf-motion-medium) var(--kf-ease-out);
}
.kf-card--dark { background: var(--kf-wood); border-color: rgba(245, 237, 216, 0.12); color: var(--kf-chalk); }
.kf-card--paper { background: var(--kf-paper); border-color: var(--kf-paper-dark); }
.kf-card--hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--kf-shadow-md);
  border-color: var(--kf-bordeaux);
}

/* Produkt-Karte für Sortennamen */
.kf-product {
  position: relative;
  background: var(--kf-paper);
  border-radius: var(--kf-radius-lg);
  padding: var(--kf-space-8) var(--kf-space-6);
  display: flex;
  flex-direction: column;
  gap: var(--kf-space-3);
  align-items: center;
  text-align: center;
  aspect-ratio: 4/5;
  box-shadow: var(--kf-shadow-sm);
  transition: all var(--kf-motion-medium) var(--kf-ease-out);
}
.kf-product:hover {
  transform: translateY(-3px);
  box-shadow: var(--kf-shadow-lg);
}
.kf-product__stamp { width: 38%; }
.kf-product__name {
  font-family: var(--kf-font-display);
  font-weight: var(--kf-weight-display);
  font-size: clamp(1rem, 1.6vw, 1.4rem);
  text-transform: uppercase;
  line-height: 0.95;
  color: var(--kf-wood);
  margin: 0;
}
.kf-product__sub {
  font-family: var(--kf-font-italic);
  font-style: italic;
  font-size: var(--kf-text-sm);
  color: var(--kf-bordeaux);
  margin: 0;
}
.kf-product__meta {
  margin-top: auto;
  display: flex;
  gap: var(--kf-space-2);
  align-items: center;
  font-size: var(--kf-text-xs);
  font-weight: var(--kf-weight-semibold);
  color: var(--kf-wood-mid);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.kf-product__price {
  font-family: var(--kf-font-display);
  font-weight: 800;
  font-size: var(--kf-text-md);
  color: var(--kf-bordeaux);
}

/* === NAVIGATION === */

.kf-header {
  background: var(--kf-cream);
  border-bottom: 1px solid var(--kf-paper-dark);
  padding: var(--kf-space-4) 0;
}
.kf-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--kf-space-6);
}
.kf-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--kf-space-3);
  text-decoration: none;
}
.kf-header__brand svg { width: 40px; height: 40px; color: var(--kf-bordeaux); }
.kf-header__brand .name {
  font-family: var(--kf-font-display);
  font-weight: var(--kf-weight-display);
  text-transform: uppercase;
  font-size: var(--kf-text-md);
  letter-spacing: 0.005em;
  line-height: 0.9;
  color: var(--kf-wood);
}
.kf-header__nav { display: flex; gap: var(--kf-space-6); align-items: center; }
.kf-header__nav a {
  font-family: var(--kf-font-body);
  font-weight: var(--kf-weight-semibold);
  font-size: var(--kf-text-sm);
  color: var(--kf-wood);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 6px 0;
  position: relative;
  transition: color var(--kf-motion-fast) var(--kf-ease-out);
}
.kf-header__nav a:hover { color: var(--kf-bordeaux); }
.kf-header__nav a.active { color: var(--kf-bordeaux); }
.kf-header__nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px; background: var(--kf-bordeaux);
}

.kf-footer {
  background: var(--kf-wood);
  color: var(--kf-chalk);
  padding: var(--kf-space-16) 0 var(--kf-space-8);
}
.kf-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--kf-space-10);
  margin-bottom: var(--kf-space-10);
}
@media (max-width: 720px) { .kf-footer__grid { grid-template-columns: 1fr 1fr; } }
.kf-footer h4 {
  font-family: var(--kf-font-display);
  font-weight: 800;
  font-size: var(--kf-text-md);
  text-transform: uppercase;
  color: var(--kf-brass-light);
  margin: 0 0 var(--kf-space-3);
  letter-spacing: 0.04em;
}
.kf-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.kf-footer a {
  color: rgba(245, 237, 216, 0.72);
  text-decoration: none;
  font-size: var(--kf-text-sm);
  transition: color var(--kf-motion-fast);
}
.kf-footer a:hover { color: var(--kf-chalk); }
.kf-footer__bottom {
  padding-top: var(--kf-space-6);
  border-top: 1px solid rgba(245, 237, 216, 0.12);
  font-size: var(--kf-text-xs);
  color: rgba(245, 237, 216, 0.5);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--kf-space-3);
}

/* === BREADCRUMB === */
.kf-crumb {
  display: flex;
  gap: var(--kf-space-3);
  align-items: center;
  font-size: var(--kf-text-sm);
  color: var(--kf-wood-mid);
}
.kf-crumb a { color: var(--kf-wood-mid); text-decoration: none; }
.kf-crumb a:hover { color: var(--kf-bordeaux); }
.kf-crumb .sep { color: var(--kf-paper-dark); }
.kf-crumb .current {
  color: var(--kf-wood);
  font-weight: var(--kf-weight-semibold);
}

/* === ALERTS === */

.kf-alert {
  display: flex;
  gap: var(--kf-space-3);
  padding: var(--kf-space-4) var(--kf-space-5);
  border-radius: var(--kf-radius-md);
  border-left: 3px solid;
  background: var(--kf-paper-light);
  font-size: var(--kf-text-base);
  line-height: 1.5;
}
.kf-alert__icon { flex-shrink: 0; font-size: 1.2rem; line-height: 1; }
.kf-alert__body { flex: 1; }
.kf-alert__title { font-weight: var(--kf-weight-semibold); margin-bottom: 4px; color: var(--kf-wood); }

.kf-alert--success { background: var(--kf-success-soft); border-color: var(--kf-success); color: #1F5237; }
.kf-alert--warn { background: var(--kf-warn-soft); border-color: var(--kf-warn); color: #8A4F0E; }
.kf-alert--error { background: var(--kf-error-soft); border-color: var(--kf-error); color: var(--kf-bordeaux); }
.kf-alert--info { background: var(--kf-info-soft); border-color: var(--kf-info); color: var(--kf-wood-mid); }

/* === SECTION HEADER (eyebrow + title pattern) === */

.kf-section-head { margin-bottom: var(--kf-space-12); max-width: 720px; }
.kf-eyebrow {
  font-family: var(--kf-font-body);
  font-weight: var(--kf-weight-bold);
  font-size: var(--kf-text-xs);
  letter-spacing: var(--kf-track-stencil);
  text-transform: uppercase;
  color: var(--kf-bordeaux);
  margin: 0 0 var(--kf-space-4);
}
.kf-title {
  font-family: var(--kf-font-display);
  font-weight: var(--kf-weight-display);
  font-size: var(--kf-text-2xl);
  line-height: 1;
  text-transform: uppercase;
  color: var(--kf-wood);
  margin: 0 0 var(--kf-space-3);
  letter-spacing: var(--kf-track-tight);
}
.kf-title em { font-style: italic; color: var(--kf-bordeaux); font-weight: 800; }
.kf-lead {
  font-family: var(--kf-font-italic);
  font-style: italic;
  font-size: var(--kf-text-md);
  color: var(--kf-wood-mid);
  line-height: 1.55;
  margin: 0;
  max-width: 620px;
}

/* === ICON SIZES === */

.kf-icon { display: inline-block; vertical-align: middle; flex-shrink: 0; }
.kf-icon--sm { width: 16px; height: 16px; }
.kf-icon--md { width: 24px; height: 24px; }
.kf-icon--lg { width: 32px; height: 32px; }
.kf-icon--xl { width: 48px; height: 48px; }