:root {
  --bg: #0a0e18;
  --bg-soft: #0f1526;
  --surface: #131a2b;
  --surface-elevated: #1a2338;
  --border: #232c42;
  --text: #e8ecf6;
  --text-muted: #8b93a7;
  --text-faint: #5b6478;
  --accent-cyan: #22d3ee;
  --accent-violet: #8b5cf6;
  --accent-gradient: linear-gradient(120deg, var(--accent-cyan), var(--accent-violet));
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --font-body: 'Inter', system-ui, sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(circle at 20% -10%, #16203a 0%, var(--bg) 45%);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
}

h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 600; margin: 0 0 .5rem; }

a { color: var(--accent-cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

.page { max-width: 1200px; margin: 0 auto; padding: 24px 20px 64px; }

/* Topbar */
.topbar {
  border-bottom: 1px solid var(--border);
  background: rgba(10, 14, 24, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.impersonation-bar {
  position: sticky;
  top: 0;
  z-index: 19;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: rgba(251, 191, 36, 0.12);
  border-bottom: 1px solid rgba(251, 191, 36, 0.35);
  color: var(--warning);
  font-size: 0.88rem;
  text-align: center;
}
.topbar__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.brand {
  --brand-glow: rgba(34, 211, 238, 0.28);
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  line-height: 1;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: transform .25s ease, filter .25s ease;
}
.brand::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -8px -10px;
  border-radius: 10px;
  background: linear-gradient(100deg, rgba(34, 211, 238, 0.08), rgba(139, 92, 246, 0.08));
  opacity: 0;
  transform: scale(.94);
  transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease;
}
.brand:hover,
.brand:focus-visible {
  color: var(--text);
  text-decoration: none;
  transform: translateY(-1px);
  filter: drop-shadow(0 0 9px var(--brand-glow));
}
.brand:hover::after,
.brand:focus-visible::after {
  opacity: 1;
  transform: scale(1);
  box-shadow: inset 0 0 0 1px rgba(103, 232, 249, 0.12);
}
.brand:focus-visible { outline: 2px solid var(--accent-cyan); outline-offset: 8px; border-radius: 4px; }
.brand__mark {
  position: relative;
  overflow: hidden;
  display: inline-grid;
  place-items: center;
  min-width: 2.35em;
  min-height: 2.05em;
  padding: 0 .42em;
  border: 1px solid rgba(103, 232, 249, 0.35);
  border-radius: 7px;
  background: linear-gradient(145deg, rgba(34, 211, 238, 0.13), rgba(139, 92, 246, 0.16));
  box-shadow: inset 0 0 16px rgba(34, 211, 238, 0.06), 0 0 0 1px rgba(139, 92, 246, 0.06);
}
.brand__mark::after {
  content: "";
  position: absolute;
  inset: -50% auto -50% -70%;
  width: 45%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .65), transparent);
  transform: skewX(-18deg);
  transition: left .65s cubic-bezier(.2, .7, .2, 1);
}
.brand:hover .brand__mark::after,
.brand:focus-visible .brand__mark::after { left: 130%; }
.brand__mark > span {
  background: linear-gradient(120deg, #67e8f9 5%, #60a5fa 48%, #a78bfa 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
  letter-spacing: -.04em;
  text-shadow: 0 0 18px rgba(34, 211, 238, .14);
}
.brand__separator {
  width: 12px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent-gradient);
  box-shadow: 0 0 8px rgba(34, 211, 238, .35);
  transition: width .25s ease, box-shadow .25s ease;
}
.brand:hover .brand__separator,
.brand:focus-visible .brand__separator { width: 18px; box-shadow: 0 0 12px rgba(139, 92, 246, .55); }
.brand__name {
  color: var(--text);
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
  transition: letter-spacing .25s ease, color .25s ease;
}
.brand:hover .brand__name,
.brand:focus-visible .brand__name { color: #fff; letter-spacing: .12em; }

.topnav { display: flex; gap: 4px; flex-wrap: wrap; margin-left: 8px; }
.topnav__link {
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
}
.topnav__link:hover { color: var(--text); text-decoration: none; background: var(--surface); }
.topnav__link.is-active { color: var(--text); background: var(--surface-elevated); }

.topbar__user { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.topbar__username { color: var(--text-muted); font-size: 0.9rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  cursor: pointer;
  transition: border-color .15s ease, box-shadow .2s ease;
}
.nav-toggle:hover { border-color: var(--accent-cyan); filter: drop-shadow(0 0 6px rgba(34, 211, 238, 0.35)); }
.nav-toggle.is-open { border-color: var(--accent-cyan); box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15); }
.nav-toggle__bar {
  height: 2px;
  border-radius: 2px;
  background: var(--accent-gradient);
  box-shadow: 0 0 6px rgba(34, 211, 238, 0.25);
  transition: transform .25s ease, opacity .2s ease, width .2s ease;
}
/* Barras asimétricas tipo "señal/circuito" en reposo, en vez de tres líneas iguales */
.nav-toggle:not(.is-open) .nav-toggle__bar:nth-child(1) { width: 12px; align-self: flex-start; }
.nav-toggle:not(.is-open) .nav-toggle__bar:nth-child(2) { width: 18px; }
.nav-toggle:not(.is-open) .nav-toggle__bar:nth-child(3) { width: 15px; align-self: flex-end; }
.nav-toggle.is-open .nav-toggle__bar { width: 18px; }
.nav-toggle.is-open .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open .nav-toggle__bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.is-open .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Buttons */
.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  background: var(--surface-elevated);
  color: var(--text);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform .08s ease, border-color .15s ease, background .15s ease;
}
.btn:hover { border-color: var(--accent-cyan); }
.btn:active { transform: scale(0.97); }
.btn--primary { background: var(--accent-gradient); color: #06111f; border: none; }
.btn--ghost { background: transparent; }
.btn--danger { border-color: rgba(248, 113, 113, 0.4); color: var(--danger); background: transparent; }
.btn--sm { padding: 6px 12px; font-size: 0.82rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

/* Diálogos nativos <dialog> — usados por cualquier módulo */
dialog {
  background: var(--surface-elevated);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  width: min(420px, 92vw);
  max-height: min(640px, 90vh);
  max-height: min(640px, 90dvh);
  overflow-y: auto;
  box-sizing: border-box;
  box-shadow: var(--shadow);
}
dialog::backdrop { background: rgba(5, 8, 16, 0.65); backdrop-filter: blur(2px); }
dialog h3 { margin-bottom: 16px; }

/* Forms */
label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px; font-weight: 500; }
input[type="text"], input[type="email"], input[type="password"], textarea, select {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 0.95rem;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent-cyan); }
input[type="text"]:-webkit-autofill,
input[type="text"]:-webkit-autofill:hover,
input[type="text"]:-webkit-autofill:focus,
input[type="email"]:-webkit-autofill,
input[type="email"]:-webkit-autofill:hover,
input[type="email"]:-webkit-autofill:focus,
input[type="password"]:-webkit-autofill,
input[type="password"]:-webkit-autofill:hover,
input[type="password"]:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--text);
  caret-color: var(--text);
  -webkit-box-shadow: 0 0 0 1000px var(--bg-soft) inset;
  box-shadow: 0 0 0 1000px var(--bg-soft) inset;
  border-color: var(--accent-cyan);
  transition: background-color 9999s ease-out 0s;
}
.field { margin-bottom: 16px; }
.field-error { color: var(--danger); font-size: 0.82rem; margin-top: 4px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--text); }
.checkbox-row input { width: auto; }

.permission-group { margin-bottom: 16px; }
.permission-group h4 { color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 8px; }
.permission-group .checkbox-row { padding: 6px 0; }

/* Flash */
.flash-stack { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.flash { padding: 12px 16px; border-radius: var(--radius-sm); font-size: 0.9rem; border: 1px solid transparent; }
.flash--success { background: rgba(52, 211, 153, 0.1); color: var(--success); border-color: rgba(52, 211, 153, 0.3); }
.flash--error { background: rgba(248, 113, 113, 0.1); color: var(--danger); border-color: rgba(248, 113, 113, 0.3); }
.flash--info { background: rgba(34, 211, 238, 0.1); color: var(--accent-cyan); border-color: rgba(34, 211, 238, 0.3); }
.flash--warning { background: rgba(251, 191, 36, 0.12); color: var(--warning); border-color: rgba(251, 191, 36, 0.35); }

/* Tables */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; }

.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge--active { background: rgba(52, 211, 153, 0.15); color: var(--success); }
.badge--inactive { background: rgba(139, 147, 167, 0.15); color: var(--text-muted); }

.grid { display: grid; gap: 16px; }
.grid--tiles { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.tile {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  transition: border-color .15s ease, transform .1s ease;
}
.tile:hover { border-color: var(--accent-cyan); text-decoration: none; transform: translateY(-2px); }
.tile h3 { margin-bottom: 6px; }
.tile p { color: var(--text-muted); font-size: 0.88rem; margin: 0; }

.stat-row { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); margin-bottom: 24px; }
.stat-tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; }
.stat-tile__value { font-family: var(--font-mono); font-size: 1.6rem; font-weight: 700; background: var(--accent-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-tile__label { color: var(--text-muted); font-size: 0.8rem; margin-top: 4px; }

.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 20px; }
.toolbar__spacer { flex: 1; }

.section-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; }

.password-field { position: relative; }
.password-field input { padding-right: 42px; }
.password-toggle {
  position: absolute; right: 0; top: 0; bottom: 0; width: 40px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none; color: var(--text-muted); cursor: pointer;
  padding: 0;
}
.password-toggle:hover { color: var(--accent-cyan); }

.login-wrap { min-height: calc(100vh - 40px); display: flex; align-items: center; justify-content: center; }
.login-card { width: 100%; max-width: 380px; }
.login-brand { font-size: 1.35rem; margin-bottom: 14px; }
.login-subtitle { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 24px; }

.error-page { min-height: calc(100vh - 40px); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 8px; }
.error-page__code { font-family: var(--font-mono); font-size: 4rem; font-weight: 700; background: var(--accent-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.error-page__message { color: var(--text-muted); max-width: 420px; }

@media (max-width: 640px) {
  .topbar__inner { gap: 10px; position: relative; }
  .nav-toggle { display: flex; margin-left: auto; }
  .topnav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    z-index: 30;
    width: clamp(190px, 18vw, 320px);
    max-width: calc(100vw - 28px);
    flex-direction: column;
    gap: 4px;
    margin: 0;
    padding: 10px;
    background: var(--surface-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  .topnav.is-open { display: flex; }
  .topnav__link { width: 100%; }
  .topbar__user { width: 100%; justify-content: space-between; }
  .page { padding: 16px 14px 48px; }
}

@media (prefers-reduced-motion: reduce) {
  .brand,
  .brand::after,
  .brand__mark::after,
  .brand__separator,
  .brand__name { transition: none; }
}