/*
 * esse-ui.css — Theme-agnostic UI component base styles
 * Components: panel, btn, alert, badge, grid, empty-state, section, table, tabs, carousel, breadcrumb
 * Every theme MUST load this file (or provide equivalent styles for all esse-* classes).
 * Themes override/extend these styles to match their visual identity.
 */

/* ── Variables (themes override these) ───────────────────────────────────── */
:root {
  --esse-bg:          #ffffff;
  --esse-surface:     #f8f9fa;
  --esse-border:      #dee2e6;
  --esse-text:        #212529;
  --esse-text-muted:  #6c757d;
  --esse-radius:      0.375rem;
  --esse-shadow:      0 1px 3px rgba(0,0,0,0.1);

  --esse-primary:     #0d6efd;
  --esse-success:     #198754;
  --esse-warning:     #ffc107;
  --esse-danger:      #dc3545;
  --esse-info:        #0dcaf0;

  --esse-carousel-height-sm:  220px;
  --esse-carousel-height-md:  400px;
  --esse-carousel-height-lg:  560px;
  --esse-carousel-transition: 500ms;
}

/* ── esse-panel ───────────────────────────────────────────────────────────── */
.esse-panel {
  background: var(--esse-surface);
  border: 1px solid var(--esse-border);
  border-radius: var(--esse-radius);
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.esse-panel-header {
  padding: .625rem 1rem;
  border-bottom: 1px solid var(--esse-border);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.esse-panel-body {
  padding: 1rem;
}

.esse-panel-footer {
  padding: .625rem 1rem;
  border-top: 1px solid var(--esse-border);
  display: flex;
  gap: .5rem;
  align-items: center;
}

.esse-panel--success { border-top: 3px solid var(--esse-success); }
.esse-panel--warning { border-top: 3px solid var(--esse-warning); }
.esse-panel--danger  { border-top: 3px solid var(--esse-danger); }
.esse-panel--info    { border-top: 3px solid var(--esse-info); }

/* ── esse-btn ─────────────────────────────────────────────────────────────── */
.esse-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .4rem .9rem;
  border-radius: var(--esse-radius);
  border: 1px solid transparent;
  font-size: .9rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  background: none;
  transition: opacity .15s, background .15s;
  line-height: 1.4;
}
.esse-btn:disabled, .esse-btn[disabled] { opacity: .55; pointer-events: none; }

.esse-btn--primary   { background: var(--esse-primary);  color: #fff; border-color: var(--esse-primary); }
.esse-btn--success   { background: var(--esse-success);  color: #fff; border-color: var(--esse-success); }
.esse-btn--danger    { background: var(--esse-danger);   color: #fff; border-color: var(--esse-danger); }
.esse-btn--secondary { background: var(--esse-surface);  color: var(--esse-text); border-color: var(--esse-border); }
.esse-btn--ghost     { background: transparent; color: var(--esse-text-muted); border-color: var(--esse-border); }
.esse-btn--link      { background: transparent; color: var(--esse-primary); border-color: transparent; padding-left: 0; padding-right: 0; }

.esse-btn--sm { padding: .2rem .6rem; font-size: .8rem; }
.esse-btn--lg { padding: .6rem 1.25rem; font-size: 1rem; }

.esse-btn--primary:hover   { opacity: .88; }
.esse-btn--secondary:hover { background: var(--esse-border); }
.esse-btn--ghost:hover     { background: var(--esse-surface); }

.esse-btn-form { display: inline; }

/* ── esse-alert ───────────────────────────────────────────────────────────── */
.esse-alert {
  padding: .75rem 1rem;
  border-radius: var(--esse-radius);
  border-left: 4px solid transparent;
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  position: relative;
}
.esse-alert--success { background: #d1e7dd; border-color: var(--esse-success); color: #0a3622; }
.esse-alert--danger  { background: #f8d7da; border-color: var(--esse-danger);  color: #58151c; }
.esse-alert--warning { background: #fff3cd; border-color: var(--esse-warning); color: #664d03; }
.esse-alert--info    { background: #cff4fc; border-color: var(--esse-info);    color: #055160; }

.esse-alert-icon  { flex-shrink: 0; }
.esse-alert-close {
  position: absolute; top: .5rem; right: .75rem;
  background: none; border: none; cursor: pointer;
  font-size: 1.1rem; line-height: 1; opacity: .6;
}
.esse-alert-close:hover { opacity: 1; }

/* ── esse-badge ───────────────────────────────────────────────────────────── */
.esse-badge {
  display: inline-block;
  padding: .2em .5em;
  border-radius: .25rem;
  font-size: .75rem;
  font-weight: 600;
  line-height: 1;
}
.esse-badge--default { background: var(--esse-surface);  color: var(--esse-text-muted); border: 1px solid var(--esse-border); }
.esse-badge--success { background: var(--esse-success);  color: #fff; }
.esse-badge--warning { background: var(--esse-warning);  color: #000; }
.esse-badge--danger  { background: var(--esse-danger);   color: #fff; }
.esse-badge--info    { background: var(--esse-info);     color: #000; }

/* ── esse-empty-state ─────────────────────────────────────────────────────── */
.esse-empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--esse-text-muted);
}
.esse-empty-icon  { font-size: 2.5rem; margin-bottom: .75rem; opacity: .4; }
.esse-empty-title { font-size: 1.1rem; font-weight: 600; margin-bottom: .5rem; color: var(--esse-text); }
.esse-empty-message { margin-bottom: 1rem; font-size: .9rem; }
.esse-empty-action  { margin-top: 1rem; }

/* ── esse-section ─────────────────────────────────────────────────────────── */
.esse-section { margin-bottom: 2rem; }
.esse-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: .75rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--esse-border);
}
.esse-section-title { font-size: 1.1rem; font-weight: 600; margin: 0; }
.esse-section-action { display: flex; gap: .5rem; }

/* ── esse-table ───────────────────────────────────────────────────────────── */
.esse-table-wrap { overflow-x: auto; }
.esse-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.esse-table th {
  text-align: left;
  padding: .5rem .75rem;
  border-bottom: 2px solid var(--esse-border);
  font-weight: 600;
  color: var(--esse-text-muted);
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.esse-table td { padding: .5rem .75rem; border-bottom: 1px solid var(--esse-border); }
.esse-table tbody tr:hover { background: var(--esse-surface); }
.esse-table--striped tbody tr:nth-child(even) { background: var(--esse-surface); }

/* ── esse-tabs ────────────────────────────────────────────────────────────── */
.esse-tabs-nav {
  list-style: none;
  padding: 0; margin: 0 0 1rem;
  display: flex;
  border-bottom: 2px solid var(--esse-border);
  gap: .25rem;
}
.esse-tabs-nav-item { margin-bottom: -2px; }
.esse-tabs-btn {
  background: none;
  border: 2px solid transparent;
  border-bottom: none;
  padding: .4rem .9rem;
  cursor: pointer;
  font-size: .9rem;
  color: var(--esse-text-muted);
  border-radius: var(--esse-radius) var(--esse-radius) 0 0;
}
.esse-tabs-nav-item--active .esse-tabs-btn {
  color: var(--esse-primary);
  border-color: var(--esse-border) var(--esse-border) var(--esse-surface);
  background: var(--esse-surface);
}
.esse-tabs-panel { display: none; }
.esse-tabs-panel--active { display: block; }

/* ── esse-carousel ────────────────────────────────────────────────────────── */
.esse-carousel {
  position: relative;
  border-radius: var(--esse-radius);
  overflow: hidden;
  background: var(--esse-surface);
  margin-bottom: 1.25rem;
}
.esse-carousel--sm   .esse-carousel-track { height: var(--esse-carousel-height-sm); }
.esse-carousel--md   .esse-carousel-track { height: var(--esse-carousel-height-md); }
.esse-carousel--lg   .esse-carousel-track { height: var(--esse-carousel-height-lg); }
.esse-carousel--full .esse-carousel-track { aspect-ratio: 16 / 9; height: auto; }

.esse-carousel-track {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.esse-carousel-slides {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform var(--esse-carousel-transition) ease;
}

.esse-carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  position: relative;
}

/* Zwei Klassen im Selektor statt einer — gewinnt zuverlässig gegen generische
   Theme-Regeln wie ".esse-content img { height: auto }", unabhängig vom Host-Kontext. */
.esse-carousel .esse-carousel-img, .esse-carousel .esse-carousel-link {
  display: block;
  width: 100%;
  height: 100%;
}
.esse-carousel .esse-carousel-img {
  object-fit: cover;
  border-radius: 0;
}

.esse-carousel-caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: .75rem 1rem;
  background: linear-gradient(to top, rgba(0,0,0,.6), transparent);
  color: #fff;
  font-size: .9rem;
}

.esse-carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 2.25rem;
  height: 2.25rem;
  border: none;
  border-radius: 50%;
  background: rgba(0,0,0,.4);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.esse-carousel-arrow:hover { background: rgba(0,0,0,.6); }
.esse-carousel-arrow--prev { left: .75rem; }
.esse-carousel-arrow--next { right: .75rem; }
/* Geometrisches Chevron statt Textzeichen — Font-Glyphen wie ‹/› sitzen je nach
   Schrift nicht exakt mittig im Zeilenkasten und wirken dadurch nach unten verschoben. */
.esse-carousel-arrow--prev::before, .esse-carousel-arrow--next::before {
  content: '';
  display: block;
  width: .55rem;
  height: .55rem;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
}
.esse-carousel-arrow--prev::before { transform: rotate(-135deg); }
.esse-carousel-arrow--next::before { transform: rotate(45deg); }

.esse-carousel-dots {
  position: absolute;
  left: 0; right: 0; bottom: .6rem;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: .4rem;
}
.esse-carousel-dot {
  width: .5rem; height: .5rem;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,.5);
  cursor: pointer;
  padding: 0;
}
.esse-carousel-dot--active { background: #fff; }

@media (prefers-reduced-motion: reduce) {
  .esse-carousel-slides { transition: none; }
}

/* ── esse-divider ─────────────────────────────────────────────────────────── */
.esse-divider {
  border: none;
  border-top: 1px solid var(--esse-border);
  margin: var(--esse-spacing-md, 1rem) 0;
}
.esse-divider--none { margin: 0; }
.esse-divider--sm   { margin: var(--esse-spacing-sm, .5rem) 0; }
.esse-divider--md   { margin: var(--esse-spacing-md, 1rem) 0; }
.esse-divider--lg   { margin: var(--esse-spacing-lg, 1.5rem) 0; }
.esse-divider--xl   { margin: var(--esse-spacing-xl, 2rem) 0; }

.esse-divider--labeled {
  display: flex;
  align-items: center;
  gap: .75rem;
  border: none;
  margin: var(--esse-spacing-md, 1rem) 0;
}
.esse-divider--labeled::before,
.esse-divider--labeled::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--esse-border);
}
.esse-divider-label { font-size: .8rem; color: var(--esse-text-muted); white-space: nowrap; }

/* ── Spacing utilities ────────────────────────────────────────────────────── */
:root {
  --esse-spacing-xs: 0.25rem;
  --esse-spacing-sm: 0.5rem;
  --esse-spacing-md: 1rem;
  --esse-spacing-lg: 1.5rem;
  --esse-spacing-xl: 2rem;
}
.esse-mt-xs { margin-top: var(--esse-spacing-xs); }
.esse-mt-sm { margin-top: var(--esse-spacing-sm); }
.esse-mt-md { margin-top: var(--esse-spacing-md); }
.esse-mt-lg { margin-top: var(--esse-spacing-lg); }
.esse-mt-xl { margin-top: var(--esse-spacing-xl); }

.esse-mb-xs { margin-bottom: var(--esse-spacing-xs); }
.esse-mb-sm { margin-bottom: var(--esse-spacing-sm); }
.esse-mb-md { margin-bottom: var(--esse-spacing-md); }
.esse-mb-lg { margin-bottom: var(--esse-spacing-lg); }
.esse-mb-xl { margin-bottom: var(--esse-spacing-xl); }

.esse-my-sm { margin-top: var(--esse-spacing-sm); margin-bottom: var(--esse-spacing-sm); }
.esse-my-md { margin-top: var(--esse-spacing-md); margin-bottom: var(--esse-spacing-md); }
.esse-my-lg { margin-top: var(--esse-spacing-lg); margin-bottom: var(--esse-spacing-lg); }

/* ── Color utilities ──────────────────────────────────────────────────────── */
.esse-color--primary { color: var(--esse-primary); }
.esse-color--success { color: var(--esse-success); }
.esse-color--warning { color: var(--esse-warning); }
.esse-color--danger  { color: var(--esse-danger);  }
.esse-color--info    { color: var(--esse-info);    }
.esse-color--muted   { color: var(--esse-text-muted); }

/* ── Size utilities (for icons and text) ──────────────────────────────────── */
.esse-size--sm { font-size: .875rem; }
.esse-size--md { font-size: 1rem; }
.esse-size--lg { font-size: 1.5rem; }
.esse-size--xl { font-size: 2rem; }

/* ── esse-grid link items ─────────────────────────────────────────────────── */
.esse-grid-item--link {
  display: block;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}
.esse-grid-item--link:hover { color: inherit; }
.esse-grid-item-label {
  display: block;
  margin-top: .4rem;
  font-size: .875rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── esse-breadcrumb ──────────────────────────────────────────────────────── */
.esse-breadcrumb { margin-bottom: 1rem; }
.esse-breadcrumb-list {
  list-style: none;
  padding: 0; margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .25rem;
  font-size: .875rem;
  color: var(--esse-text-muted);
}
.esse-breadcrumb-item + .esse-breadcrumb-item::before {
  content: '/';
  opacity: .4;
}
.esse-breadcrumb-link {
  color: var(--esse-text-muted);
  text-decoration: none;
}
.esse-breadcrumb-link:hover { color: var(--esse-text); text-decoration: underline; }
.esse-breadcrumb-item--current { color: var(--esse-text); }