/* Reset básico */
*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg-main: #020617;
  --bg-card: rgba(15, 23, 42, 0.92);
  --border-soft: rgba(148, 163, 184, 0.45);
  --accent-cyan: #22d3ee;
  --accent-purple: #a855f7;
  --accent-lime: #a3e635;
  --accent-pink: #ec4899;
  --accent-amber: #fbbf24;
  --accent-blue: #3b82f6;
  --accent-red: #f97373;
  --accent-teal: #14b8a6;
  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
}

/* Fondo ciberpunk */
body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, #1e293b 0, #020617 45%, #000 100%);
  color: var(--text-main);
  overflow-x: hidden;
}

/* Grid neon */
.neon-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

/* Orbes de luz */
.neon-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(40px);
  opacity: 0.55;
  z-index: 0;
}

.orb-1 {
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.9), transparent 70%);
  top: -60px;
  left: -40px;
}

.orb-2 {
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.9), transparent 70%);
  bottom: -60px;
  right: -40px;
}

/* Contenedor principal */
.menu-container {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 16px 24px;
}

/* Header */
.menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.logo-chip {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 0, var(--accent-cyan), #0ea5e9);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.8);
}

.logo-mark {
  font-size: 26px;
  color: #020617;
  font-weight: 700;
}

.menu-title-block h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.menu-title-block p {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

.hud-tag {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  padding: 6px 10px;
  background: rgba(15, 23, 42, 0.9);
  font-size: 11px;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 110px;
}

.hud-label {
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-size: 10px;
}

.hud-value {
  font-weight: 600;
  color: var(--accent-cyan);
}

/* Tarjeta principal */
.menu-card {
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 55%),
    radial-gradient(circle at bottom right, rgba(168, 85, 247, 0.13), transparent 55%),
    var(--bg-card);
  border-radius: 22px;
  border: 1px solid var(--border-soft);
  box-shadow:
    0 0 0 1px rgba(15, 23, 42, 0.95),
    0 24px 70px rgba(15, 23, 42, 0.9);
  padding: 20px 18px 16px;
  backdrop-filter: blur(18px);
}

.menu-card-header h2 {
  margin: 0 0 4px;
  font-size: 17px;
}

.menu-card-header p {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--text-muted);
}

/* Grid de exámenes */
.exam-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

/* Tarjeta de examen (botón) */
.exam-tile {
  position: relative;
  display: flex;
  flex-direction: row;
  padding: 0;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  overflow: hidden;
  background: transparent;
  text-align: left;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border 0.15s ease;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.92));
}

.exam-tile:hover {
  transform: translateY(-2px) translateX(1px);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.9);
}

.exam-tile-bar {
  width: 4px;
  flex-shrink: 0;
  background: var(--accent-cyan);
}

/* Colores de barras según materia */
.accent-cyan { background: var(--accent-cyan); }
.accent-purple { background: var(--accent-purple); }
.accent-lime { background: var(--accent-lime); }
.accent-pink { background: var(--accent-pink); }
.accent-amber { background: var(--accent-amber); }
.accent-blue { background: var(--accent-blue); }
.accent-red { background: var(--accent-red); }
.accent-teal { background: var(--accent-teal); }

.exam-tile-body {
  padding: 10px 12px 9px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.exam-tile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  text-transform: uppercase;
}

.exam-code {
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.exam-tag {
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 10px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.55);
  color: var(--accent-cyan);
}

.exam-tile h3 {
  margin: 0;
  font-size: 14px;
}

.exam-tile p {
  margin: 0;
  font-size: 12px;
  color: var(--text-muted);
}

/* Footer */
.menu-footer {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid rgba(148, 163, 184, 0.35);
  padding-top: 8px;
  margin-top: 6px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--accent-teal);
  box-shadow: 0 0 10px rgba(45, 212, 191, 0.8);
}

.menu-footer-text {
  opacity: 0.9;
}

/* Responsivo */
@media (max-width: 900px) {
  .exam-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .menu-header {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .hud-tag {
    align-self: flex-start;
  }
}

@media (max-width: 480px) {
  .menu-container {
    padding: 16px 12px 20px;
  }

  .menu-card {
    padding: 16px 14px 12px;
    border-radius: 18px;
  }

  .exam-tile-body {
    padding: 8px 10px 7px;
  }

  .exam-tile h3 {
    font-size: 13px;
  }

  .exam-tile p {
    font-size: 11px;
  }

  .menu-title-block h1 {
    font-size: 18px;
  }
}