/* Museo Virtual — tema oscuro moderno */
:root {
  --bg: #0a0a0a;
  --bg2: #121214;
  --bg3: #1a1a1e;
  --border: #2a2a2e;
  --text: #f2f2f2;
  --muted: rgba(255,255,255,.55);
  --accent: #8b1a1a;
  --accent2: #1a3a5c;
  --ok: #2ecc71;
  --err: #e74c3c;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0,0,0,.45);
  --font: Arial, Helvetica, sans-serif;
  --nav-h: 64px;
}
* { margin:0; padding:0; box-sizing:border-box; }
body.app-body {
  font-family: var(--font);
  background: var(--bg);
  min-height: 100vh;
  color: var(--text);
  padding-bottom: calc(var(--nav-h) + 12px);
}
@media (min-width: 769px) {
  body.app-body { padding-bottom: 0; }
}
a { color: #c8d0dc; text-decoration: none; }
a:hover { color: #fff; }

.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: .85rem 1.4rem;
  background: rgba(10,10,12,.95);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
}
.logo {
  font-size: 1.05rem; color: #fff; font-weight: 700;
  display: flex; align-items: center; gap: .5rem;
}
.logo svg { flex-shrink: 0; }
.nav { display: flex; gap: .35rem; align-items: center; flex-wrap: wrap; }
.nav a {
  font-size: .85rem; font-weight: 600; color: rgba(255,255,255,.75);
  padding: .45rem .7rem; border-radius: 10px;
  display: inline-flex; align-items: center; gap: .35rem;
}
.nav a:hover, .nav a.active { background: var(--bg3); color: #fff; }
.nav a.btn-nav {
  background: var(--accent); color: #fff !important;
  border: 1px solid #000;
}
.nav a.btn-nav:hover { filter: brightness(1.1); }
.nav a.btn-outline-nav {
  border: 1px solid var(--border); color: #fff !important;
}
.nav svg { width: 16px; height: 16px; fill: currentColor; }

.app-main { max-width: 960px; margin: 0 auto; padding: 1.5rem 1.2rem 2rem; }
.app-footer {
  text-align: center; padding: 1.5rem; font-size: .8rem; color: var(--muted);
  border-top: 1px solid var(--border);
}

.mobile-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(12,12,14,.97);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(16px);
  padding: 0 .4rem;
  justify-content: space-around; align-items: center;
}
.mobile-nav a {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: .2rem; color: rgba(255,255,255,.55); font-size: .65rem; font-weight: 700;
  padding: .4rem .2rem; text-align: center; max-width: 80px;
}
.mobile-nav a svg { width: 22px; height: 22px; fill: currentColor; }
.mobile-nav a.active, .mobile-nav a:hover { color: #fff; }
.mobile-nav a.accent { color: #e8a0a0; }

@media (max-width: 768px) {
  .app-header .nav { display: none; }
  .mobile-nav { display: flex; }
}

.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.3rem;
  box-shadow: var(--shadow);
}
h1, h2, h3 { color: #fff; font-weight: 700; }
.btn, .btn-sm, button.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .35rem;
  background: var(--accent); color: #fff; border: 1px solid #000;
  padding: .65rem 1.1rem; border-radius: 12px; font-weight: 700;
  font-size: .9rem; cursor: pointer; font-family: inherit;
}
.btn:hover { filter: brightness(1.08); color: #fff; }
.btn-sm { padding: .4rem .75rem; font-size: .8rem; }
.btn-outline, a.btn-outline {
  display: inline-flex; align-items: center; gap: .3rem;
  background: transparent; color: #fff; border: 1px solid var(--border);
  padding: .4rem .75rem; border-radius: 10px; font-weight: 600; font-size: .8rem;
}
.btn-outline:hover { border-color: #666; color: #fff; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: .35rem; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; background: #0d0d0f; border: 1px solid var(--border);
  border-radius: 10px; color: #fff; padding: .65rem .8rem;
  font-size: .95rem; font-family: inherit;
}
.form-group textarea { min-height: 90px; resize: vertical; }
.file-hint { font-size: .75rem; color: var(--muted); margin-top: .3rem; }

.alert { padding: .75rem 1rem; border-radius: 12px; margin-bottom: 1rem; font-size: .9rem; }
.alert-error { background: rgba(231,76,60,.15); border: 1px solid rgba(231,76,60,.4); color: #ffb4b4; }
.alert-ok { background: rgba(46,204,113,.12); border: 1px solid rgba(46,204,113,.35); color: #a8f0c0; }

.tours-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem;
  margin-top: 1.2rem;
}
.tour-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  display: flex; flex-direction: column;
}
.tour-card .thumb {
  height: 140px; background: var(--bg3) center/cover no-repeat;
  display: flex; align-items: flex-end;
  padding: .5rem .7rem;
}
.tour-card .thumb span {
  font-size: .7rem; font-weight: 700; color: #fff;
  background: rgba(0,0,0,.65); padding: .25rem .5rem; border-radius: 8px;
}
.tour-card .body { padding: 1rem; flex: 1; display: flex; flex-direction: column; gap: .5rem; }
.tour-card h3 { font-size: 1rem; margin: 0; }
.tour-card p { font-size: .82rem; color: var(--muted); margin: 0; flex: 1; }
.tour-card .actions { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .4rem; }
.link-box {
  background: #0d0d0f; border: 1px solid var(--border); border-radius: 10px;
  padding: .5rem .65rem; word-break: break-all;
}
.link-box code { font-size: .75rem; color: #c8d0dc; }
.empty { text-align: center; padding: 2.5rem 1.5rem; color: var(--muted); }
.page-head {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: .8rem; margin-bottom: .5rem;
}
.page-head h1 { font-size: 1.35rem; margin: 0; }