:root {
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --text: #f8f8f8;
  --muted: #b8b8b8;
  --accent: #ffd86a;
  --accent-soft: rgba(255, 216, 106, 0.25);
  --bg: radial-gradient(circle at top, #1b1b1b 0%, #0b0b0c 45%, #000 90%);
  --bg-solid: #050608;
  --card-radius: 20px;
  --transition-fast: 0.22s ease-out;
  --transition-med: 0.3s ease;
}

/* TEMA CLARO */
body.theme-light {
  --glass-bg: rgba(255, 255, 255, 0.84);
  --glass-border: rgba(0, 0, 0, 0.06);
  --text: #141414;
  --muted: #555;
  --accent: #f2b544;
  --accent-soft: rgba(242, 181, 68, 0.18);
  --bg: radial-gradient(circle at top, #ffffff 0%, #f6f3ec 30%, #f0ede6 70%);
  --bg-solid: #f5f2eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* LOADER */

#loaderOverlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #000 0%, #050608 40%, #000 100%);
  z-index: 9999;
  color: #fff;
}

#loaderLogo {
  position: relative;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #1f1c0f 0%, #090909 55%, #000 90%);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06),
    0 10px 40px rgba(0, 0, 0, 0.8),
    0 0 30px rgba(255, 216, 106, 0.25);
  overflow: hidden;
}

.loader-ring {
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.08);
  border-top-color: var(--accent);
  border-right-color: var(--accent);
  animation: spin 1.1s linear infinite;
}

.loader-text {
  position: relative;
  font-weight: 700;
  letter-spacing: 0.2em;
  font-size: 0.9rem;
  color: var(--accent);
}

.loader-subtitle {
  margin-top: 16px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.74rem;
  opacity: 0.9;
}

.loader-caption {
  margin-top: 8px;
  font-size: 0.9rem;
  opacity: 0.7;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* HEADER */

header {
  padding: 28px 16px 16px;
  background:
    radial-gradient(circle at top, rgba(255, 236, 175, 0.18) 0%, rgba(0, 0, 0, 0) 55%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.54) 0%, rgba(0, 0, 0, 0.0) 40%);
}

.body.theme-light header {
  background:
    radial-gradient(circle at top, rgba(255, 236, 175, 0.32) 0%, rgba(255, 255, 255, 0) 55%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.75) 0%, rgba(255, 255, 255, 0.1) 40%);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 14px 18px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.08),
    rgba(0, 0, 0, 0.76)
  );
  backdrop-filter: blur(18px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.65);
}

body.theme-light .header-inner {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.94),
    rgba(255, 249, 233, 0.90)
  );
  border-color: rgba(0, 0, 0, 0.06);
  box-shadow: 0 16px 60px rgba(0, 0, 0, 0.18);
}

.header-main {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 1 1 260px;
}

.avatar-wrap {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  padding: 3px;
  background: radial-gradient(circle at top, var(--accent) 0%, transparent 55%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-wrap img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
}

.header-text h1 {
  margin: 4px 0;
  font-size: 1.9rem;
  font-weight: 700;
}

.header-text p {
  margin: 2px 0 10px;
  font-size: 0.98rem;
  opacity: 0.88;
}

.header-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.header-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

/* BOTONES */

.main-btn,
.premium-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  outline: none;
  transition: var(--transition-fast);
}

.main-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  color: var(--text);
}

.main-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-1px);
}

.premium-btn {
  background: linear-gradient(135deg, #ffdf80, #c8a548);
  color: #222 !important;
  border: 2px solid rgba(255, 255, 255, 0.45);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.45),
    0 0 18px rgba(255, 216, 106, 0.4);
}

.premium-btn:hover {
  transform: translateY(-1px) scale(1.02);
}

/* Ghost buttons (tema + layout) */

.ghost-btn {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  cursor: pointer;
  backdrop-filter: blur(8px);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
}

body.theme-light .ghost-btn {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(0, 0, 0, 0.06);
}

.ghost-btn:hover {
  border-color: var(--accent);
}

/* PAGE */

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 16px 60px;
  flex: 1;
}

/* CONTROLES */

.controls {
  margin-top: 12px;
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.search-block {
  max-width: 520px;
  width: 100%;
}

.search-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.7;
  margin-bottom: 6px;
}

.search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 4px 10px 4px 12px;
  backdrop-filter: blur(14px);
}

body.theme-light .search-wrapper {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(0, 0, 0, 0.08);
}

.search-icon {
  margin-right: 8px;
  font-size: 0.9rem;
  opacity: 0.8;
}

.search-wrapper input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-size: 0.9rem;
  padding: 6px 4px;
}

.search-wrapper input::placeholder {
  color: var(--muted);
}

.clear-btn {
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 4px 6px;
  font-size: 0.8rem;
  opacity: 0.6;
  display: none;
}

.clear-btn.visible {
  display: inline-flex;
}

.filters-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(0, 0, 0, 0.45);
  color: var(--text);
  font-size: 0.8rem;
  padding: 6px 10px;
  cursor: pointer;
  transition: var(--transition-fast);
}

body.theme-light .chip {
  background: rgba(255, 255, 255, 0.94);
  border-color: rgba(0, 0, 0, 0.08);
}

.chip.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: #1a1305;
}

/* GRID DE CARDS */

.tests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 8px;
}

.card-link {
  text-decoration: none;
  color: inherit;
}

.card {
  padding: 22px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  backdrop-filter: blur(16px);
  transition: var(--transition-med);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 140px;
}

.card:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: var(--accent);
  box-shadow: 0 8px 30px rgba(255, 216, 106, 0.22);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255, 216, 106, 0.12), transparent);
  opacity: 0;
  transition: 0.35s;
  pointer-events: none;
}

.card:hover::after {
  opacity: 1;
}

.icon-box {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.card-tag {
  font-size: 0.72rem;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.18);
  opacity: 0.9;
}

body.theme-light .card-tag {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(0, 0, 0, 0.08);
}

.card h2 {
  margin: 2px 0 4px;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  opacity: 0.86;
  font-size: 0.9rem;
}

/* Vista compacta (cards pequeñas) */

body.compact-cards .card {
  padding: 14px 14px;
  border-radius: 16px;
  min-height: auto;
}

body.compact-cards .card h2 {
  font-size: 1rem;
}

body.compact-cards .card p {
  font-size: 0.84rem;
}

body.compact-cards .icon-box {
  width: 44px;
  height: 44px;
}

/* Animación sección */

.section-animate {
  animation: fadeUp 0.45s ease-out;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ESTADO VACÍO */

.empty-state {
  text-align: center;
  margin-top: 28px;
  font-size: 0.95rem;
  opacity: 0.7;
}

/* FOOTER */

footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 14px 16px 18px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.7) 0%, #000 60%);
}

body.theme-light footer {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, #f6f3ed 60%);
  border-top-color: rgba(0, 0, 0, 0.06);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  font-size: 0.86rem;
}

.footer-main {
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-brand {
  font-weight: 600;
}

.footer-dot {
  opacity: 0.5;
}

.footer-text {
  opacity: 0.7;
}

.footer-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-links a {
  color: inherit;
  text-decoration: none;
  opacity: 0.7;
  font-size: 0.82rem;
}

.footer-links a:hover {
  opacity: 1;
}

/* RESPONSIVE */

@media (max-width: 768px) {
  .header-inner {
    padding: 14px 12px 18px;
  }

  .header-main {
    align-items: flex-start;
  }

  .avatar-wrap {
    width: 76px;
    height: 76px;
  }

  .header-text h1 {
    font-size: 1.5rem;
  }

  .header-text p {
    font-size: 0.9rem;
  }

  .filters-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .tests-grid {
    grid-template-columns: 1fr;
  }
}