/**
 * JakToMám — Sdílené komponenty
 *
 * Importuje variables.css (layout.php ho linkuje jako první).
 * Zde jsou opakující se stavební prvky: tlačítka, karty, badges, formuláře.
 *
 * Pravidlo: pokud stejný vizuální vzor použiješ na 2+ místech, patří sem.
 */

/* ── Tlačítka ──────────────────────────────────────────────────────────────── */

.btn {
  display: inline-block;
  padding: .55rem 1.25rem;
  font-size: var(--font-size-md);
  font-family: var(--font-base);
  font-weight: 600;
  border: none;
  border-radius: 0;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
  line-height: 1.4;
}

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

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-2);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-surface-3); }

.btn-danger {
  background: var(--color-error);
  color: #fff;
}
.btn-danger:hover { background: #991b1b; }

.btn-ghost {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.btn-ghost:hover { background: var(--color-accent-light); }

/* Tmavé tlačítko (dark UI — gem, 3D, admin overlay) */
.btn-dark {
  background: rgba(255,255,255,.08);
  color: var(--color-text-dark);
  border: 1px solid var(--color-border-dark);
}
.btn-dark:hover { background: rgba(255,255,255,.16); color: #fff; }
.btn-dark.active { background: rgba(136,180,255,.22); color: var(--color-accent-dark); border-color: rgba(136,180,255,.5); }

.btn-sm  { padding: .3rem .75rem; font-size: var(--font-size-sm); }
.btn-lg  { padding: .75rem 2rem;  font-size: var(--font-size-lg); }
.btn-full { width: 100%; text-align: center; }

.btn:disabled, .btn[disabled] { opacity: .5; cursor: default; pointer-events: none; }

/* ── Karty ─────────────────────────────────────────────────────────────────── */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
}

.card-sm { padding: var(--space-4); }

.card-dark {
  background: #0a0a1a;
  border: 1px solid var(--color-border-dark);
  border-radius: 0;
  box-shadow: var(--shadow-dark);
}

/* ── Badges ────────────────────────────────────────────────────────────────── */

.badge {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 0;
  font-size: var(--font-size-xs);
  font-weight: 700;
  line-height: 1.5;
}

.badge-success  { background: var(--color-success-bg); color: var(--color-success); }
.badge-error    { background: var(--color-error-bg);   color: var(--color-error); }
.badge-warning  { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-info     { background: var(--color-info-bg);    color: var(--color-info); }
.badge-neutral  { background: #f0f0f8; color: var(--color-text-2); }
.badge-accent   { background: var(--color-accent-light); color: var(--color-accent); }

/* ── Flash zprávy ──────────────────────────────────────────────────────────── */

.flash {
  border-radius: 0;
  padding: .7rem 1rem;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-md);
}
.flash-success { background: var(--color-success-bg); color: #065f46; }
.flash-error   { background: var(--color-error-bg);   color: var(--color-error); }
.flash-warning { background: var(--color-warning-bg); color: #856404; }
.flash-info    { background: var(--color-info-bg);    color: var(--color-info); }

/* ── Formuláře ─────────────────────────────────────────────────────────────── */

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-2);
  margin-bottom: var(--space-1);
  margin-top: var(--space-4);
}

.form-input {
  width: 100%;
  box-sizing: border-box;
  padding: .5rem .75rem;
  border: 1px solid var(--color-border-2);
  border-radius: 0;
  font-size: var(--font-size-base);
  font-family: var(--font-base);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 2px var(--color-accent-light);
}
.form-input.error { border-color: var(--color-error); }

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-3);
  margin-top: var(--space-1);
}

/* ── Page wrapper ──────────────────────────────────────────────────────────── */

.page-wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-12);
}

.page-wrap-sm { max-width: 600px; }
.page-wrap-lg { max-width: 1100px; }
.page-wrap-full { max-width: 100%; }

/* ── Accordion (details/summary) ──────────────────────────────────────────── */

details.accordion {
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 0;
  margin-bottom: .5rem;
  overflow: hidden;
}
details.accordion + details.accordion { margin-top: -.5rem; border-top-left-radius: 0; border-top-right-radius: 0; }
details.accordion:has(+ details.accordion) { border-bottom-left-radius: 0; border-bottom-right-radius: 0; margin-bottom: 0; }
details.accordion summary {
  padding: .75rem 1rem;
  font-weight: 400;
  cursor: pointer;
  background: var(--color-surface-2, #f9fafb);
  list-style: none;
  display: flex;
  align-items: center;
  gap: .5rem;
  transition: background .15s;
}
details.accordion summary:hover { background: var(--color-surface-3, #f3f4f6); }
details.accordion summary::before {
  content: '▸';
  display: inline-block;
  transition: transform .2s;
  font-size: .85em;
  color: var(--color-text-3, #9ca3af);
}
details.accordion[open] summary::before { transform: rotate(90deg); }
details.accordion summary::-webkit-details-marker { display: none; }
details.accordion > :not(summary) { padding: .75rem 1rem 1rem 2rem; }

/* Exclusive accordion — only one open at a time (needs data-accordion-group or JS) */
details.accordion-exclusive {
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 0;
  margin-bottom: .5rem;
  overflow: hidden;
}
details.accordion-exclusive + details.accordion-exclusive { margin-top: -.5rem; border-top-left-radius: 0; border-top-right-radius: 0; }
details.accordion-exclusive:has(+ details.accordion-exclusive) { border-bottom-left-radius: 0; border-bottom-right-radius: 0; margin-bottom: 0; }
details.accordion-exclusive summary {
  padding: .75rem 1rem;
  font-weight: 400;
  cursor: pointer;
  background: var(--color-surface-2, #f9fafb);
  list-style: none;
  display: flex;
  align-items: center;
  gap: .5rem;
  transition: background .15s;
}
details.accordion-exclusive summary:hover { background: var(--color-surface-3, #f3f4f6); }
details.accordion-exclusive summary::before {
  content: '▸';
  display: inline-block;
  transition: transform .2s;
  font-size: .85em;
  color: var(--color-text-3, #9ca3af);
}
details.accordion-exclusive[open] summary::before { transform: rotate(90deg); }
details.accordion-exclusive summary::-webkit-details-marker { display: none; }
details.accordion-exclusive > :not(summary) { padding: .75rem 1rem 1rem 2rem; }

/* ── Utility třídy ─────────────────────────────────────────────────────────── */

.text-muted   { color: var(--color-text-3); }
.text-xs      { font-size: var(--font-size-xs); }
.text-sm      { font-size: var(--font-size-sm); }
.text-mono    { font-family: var(--font-mono); }
.text-center  { text-align: center; }
.text-right   { text-align: right; }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap    { flex-wrap: wrap; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── Plan gating ──────────────────────────────────────────────────────────── */

[data-gating="hidden"] { display: none !important; }

[data-gating="locked"] {
  opacity: .55;
  pointer-events: auto;
  position: relative;
}
[data-gating="locked"]::before {
  content: "🔒 ";
  font-size: .8em;
}
[data-gating="locked"]:hover {
  opacity: .75;
}

/* ── Admin debug: chapter snapshot indicators ─────────────────────────────── */
body.is-admin .cached {
  border: 1px solid green;
  border-radius: 0;
  position: relative;
}
body.is-admin .cached::after {
  content: "cached";
  position: absolute;
  top: 2px;
  right: 4px;
  font-size: .6rem;
  color: #22c55e;
  opacity: .6;
}