/* ════════════════════════════════════════════════════════════════════
   VFD OPS — Design System
   Paleta: índigo (primario) + teal (acento) — complementarios en el
   círculo cromático, dan contraste sin chocar. Neutros con tinte azulado
   frío para que combinen con ambos. Mismos tokens semánticos (success/
   danger/warning/info) en light y dark, recalibrados para contraste AA.
   ════════════════════════════════════════════════════════════════════ */

:root {
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;

  /* Light theme (por defecto) */
  --bg:          #f4f5f9;
  --surface:     #ffffff;
  --surface-alt: #f8f9fc;
  --border:      #e5e7ee;
  --text:        #1c1f2b;
  --text-muted:  #6b7280;
  --text-faint:  #9aa1b1;

  --primary:      #4f46e5;
  --primary-hov:  #4338ca;
  --primary-fg:   #ffffff;
  --primary-soft: #eef2ff;

  --accent:      #0d9488;
  --accent-soft: #ecfdf9;

  --success:      #16a34a;
  --success-soft: #f0fdf4;
  --danger:       #dc2626;
  --danger-soft:  #fef2f2;
  --warning:      #d97706;
  --warning-soft: #fffbeb;
  --info:         #2563eb;
  --info-soft:    #eff6ff;

  --sidebar-bg:   #171a2e;
  --sidebar-fg:   #b6bad0;
  --sidebar-fg-hov: #ffffff;
  --sidebar-hov-bg: #262a45;
  --sidebar-border: #262a45;

  --radius:    10px;
  --radius-sm: 6px;
  --shadow:    0 1px 2px rgba(23,26,46,.06), 0 1px 6px rgba(23,26,46,.06);
  --shadow-md: 0 4px 16px rgba(23,26,46,.10);

  color-scheme: light;
}

html[data-theme="dark"] {
  --bg:          #0d0f17;
  --surface:     #161925;
  --surface-alt: #1b1f2d;
  --border:      #2a2e40;
  --text:        #e7e9f2;
  --text-muted:  #9aa1b5;
  --text-faint:  #6b7284;

  --primary:      #818cf8;
  --primary-hov:  #a5b0fb;
  --primary-fg:   #0d0f17;
  --primary-soft: #1d2145;

  --accent:      #2dd4bf;
  --accent-soft: #0f2a26;

  --success:      #4ade80;
  --success-soft: #12291b;
  --danger:       #f87171;
  --danger-soft:  #2e1416;
  --warning:      #fbbf24;
  --warning-soft: #2c2210;
  --info:         #60a5fa;
  --info-soft:    #132238;

  --sidebar-bg:     #0a0c14;
  --sidebar-fg:     #9198ab;
  --sidebar-fg-hov: #ffffff;
  --sidebar-hov-bg: #1b1e30;
  --sidebar-border: #1e2133;

  --shadow:    0 1px 2px rgba(0,0,0,.3), 0 1px 8px rgba(0,0,0,.25);
  --shadow-md: 0 8px 24px rgba(0,0,0,.4);

  color-scheme: dark;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  transition: background .15s ease, color .15s ease;
}

a { color: var(--primary); }

/* ── Layout ─────────────────────────────── */
.layout { display: flex; min-height: 100vh; }

/* ── Topbar (móvil/tablet) ────────────────── */
.topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 20;
  align-items: center;
  gap: 12px;
  background: var(--sidebar-bg);
  color: #fff;
  padding: 12px 16px;
  box-shadow: var(--shadow);
}
.topbar .brand { font-size: 1.05em; font-weight: 700; color: #fff; flex: 1; }
.topbar-btn {
  background: transparent;
  border: none;
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.topbar-btn:hover { background: var(--sidebar-hov-bg); }
.topbar-btn svg { width: 20px; height: 20px; }

/* ── Sidebar ─────────────────────────────── */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,12,20,.55);
  z-index: 29;
}

.sidebar {
  width: 232px;
  background: var(--sidebar-bg);
  color: var(--sidebar-fg);
  padding: 22px 14px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--sidebar-border);
  transition: width .18s ease, padding .18s ease;
  overflow: hidden;
}

.sidebar-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.brand { font-size: 1.15em; font-weight: 700; color: #fff; letter-spacing: -.01em; white-space: nowrap; }
.brand-sub { font-size: 0.74em; color: var(--text-faint); margin-bottom: 26px; margin-top: 2px; white-space: nowrap; }

.collapse-toggle {
  background: transparent;
  border: 1px solid var(--sidebar-border);
  color: var(--sidebar-fg);
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.collapse-toggle:hover { color: #fff; background: var(--sidebar-hov-bg); }
.collapse-toggle svg { width: 14px; height: 14px; }

.expand-toggle {
  display: none;
  position: fixed;
  top: 18px;
  left: 12px;
  z-index: 21;
  background: var(--sidebar-bg);
  border: 1px solid var(--sidebar-border);
  color: var(--sidebar-fg);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.expand-toggle:hover { color: #fff; background: var(--sidebar-hov-bg); }
.expand-toggle svg { width: 15px; height: 15px; }

html[data-sidebar="collapsed"] .sidebar { width: 0; padding-left: 0; padding-right: 0; border-right: none; }
html[data-sidebar="collapsed"] .expand-toggle { display: flex; }

.nav-section { margin-bottom: 18px; }
.nav-label {
  font-size: 0.66em;
  text-transform: uppercase;
  color: var(--text-faint);
  letter-spacing: .08em;
  margin-bottom: 6px;
  padding: 0 10px;
  font-weight: 700;
}

.sidebar a {
  display: block;
  color: var(--sidebar-fg);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 2px;
  font-size: 0.87em;
  font-weight: 500;
  transition: background .12s ease, color .12s ease;
}
.sidebar a:hover { background: var(--sidebar-hov-bg); color: var(--sidebar-fg-hov); }
.sidebar a.active {
  background: var(--primary);
  color: #fff;
}

.sidebar-footer {
  margin-top: auto;
  border-top: 1px solid var(--sidebar-border);
  padding-top: 14px;
  font-size: 0.8em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-footer .sf-info { flex: 1; min-width: 0; }
.sidebar-footer .sf-name { color: #fff; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-footer .sf-role { color: var(--text-faint); font-size: 0.85em; }

.theme-toggle {
  background: var(--sidebar-hov-bg);
  border: 1px solid var(--sidebar-border);
  color: var(--sidebar-fg);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.theme-toggle:hover { color: #fff; }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .i-sun  { display: none; }
.theme-toggle .i-moon { display: block; }
html[data-theme="dark"] .theme-toggle .i-sun  { display: block; }
html[data-theme="dark"] .theme-toggle .i-moon { display: none; }

/* ── Main content ────────────────────────── */
.main { flex: 1; padding: 32px; overflow-y: auto; min-width: 0; }

h1 { font-size: 1.55em; color: var(--text); margin-bottom: 24px; font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: 1.05em; color: var(--text); margin-bottom: 16px; font-weight: 700; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.page-header h1 { margin-bottom: 0; }

/* ── Cards ───────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 22px;
  box-shadow: var(--shadow);
}

/* ── Stats ───────────────────────────────── */
.stats { display: flex; gap: 14px; margin-bottom: 26px; flex-wrap: wrap; }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  flex: 1;
  min-width: 150px;
  box-shadow: var(--shadow);
}
.stat-card .stat-number { font-size: 1.9em; font-weight: 800; color: var(--text); letter-spacing: -.02em; }
.stat-card .stat-label { color: var(--text-muted); font-size: 0.8em; margin-top: 4px; }

/* ── Tables ──────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
th {
  background: var(--surface-alt);
  color: var(--text-muted);
  padding: 11px 14px;
  text-align: left;
  font-size: 0.72em;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-bottom: 1px solid var(--border);
}
td { padding: 11px 14px; border-bottom: 1px solid var(--border); font-size: 0.87em; color: var(--text); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--surface-alt); }

/* ── Badges ──────────────────────────────── */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.72em; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; }
.badge-ACTIVO    { background: var(--success-soft); color: var(--success); }
.badge-SUSPENDIDO{ background: var(--danger-soft);  color: var(--danger); }
.badge-INACTIVO  { background: var(--surface-alt);  color: var(--text-faint); }

/* ── Buttons ─────────────────────────────── */
.btn {
  display: inline-block;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-size: 0.83em;
  font-weight: 600;
  text-decoration: none;
  font-family: var(--font);
  line-height: 1.4;
  transition: background .12s ease, filter .12s ease;
}
.btn-primary   { background: var(--primary); color: var(--primary-fg); }
.btn-primary:hover { background: var(--primary-hov); }
.btn-danger    { background: var(--danger); color: #fff; }
.btn-danger:hover  { filter: brightness(.9); }
.btn-success   { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(.9); }
.btn-secondary { background: var(--surface-alt); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }

.inline-form { display: inline; }
.action-group { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }

/* ── Forms ───────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 0.84em; font-weight: 700; color: var(--text-muted); margin-bottom: 6px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  max-width: 420px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  font-family: var(--font);
  background: var(--surface);
  color: var(--text);
}
.form-group textarea { resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }

input[type="date"], select {
  color-scheme: inherit;
}

/* ── Alerts ──────────────────────────────── */
.alert { padding: 10px 16px; border-radius: var(--radius-sm); margin-bottom: 20px; font-size: 0.88em; }
.alert-success { background: var(--success-soft); color: var(--success); border-left: 4px solid var(--success); }
.alert-error   { background: var(--danger-soft);  color: var(--danger);  border-left: 4px solid var(--danger); }
.alert-danger  { background: var(--danger-soft);  color: var(--danger);  border-left: 4px solid var(--danger); }
.alert-warning { background: var(--warning-soft); color: var(--warning); border-left: 4px solid var(--warning); }

/* ── Filter tabs ─────────────────────────── */
.filter-tabs { display: flex; gap: 6px; }

/* ── Misc ────────────────────────────────── */
.meta { color: var(--text-faint); font-size: 0.82em; }

/* ════════════════════════════════════════════════════════════════════
   Responsive — tablet / móvil
   ════════════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .main { padding: 24px 20px; }
  .sidebar { width: 216px; }
}

@media (max-width: 860px) {
  .topbar { display: flex; }
  .layout { flex-direction: column; }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 30;
    transform: translateX(-100%);
    transition: transform .2s ease;
    box-shadow: var(--shadow-md);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop.open { display: block; }

  html[data-sidebar="collapsed"] .sidebar { width: 216px; padding: 22px 14px; border-right: 1px solid var(--sidebar-border); }
  .collapse-toggle, .expand-toggle { display: none !important; }

  .main { padding: 18px 16px; }
  h1 { font-size: 1.32em; }

  .stats { gap: 10px; }
  .stat-card { min-width: 46%; padding: 14px 16px; }
  .stat-card .stat-number { font-size: 1.55em; }

  table { display: block; overflow-x: auto; white-space: nowrap; }
}

@media (max-width: 480px) {
  .stat-card { min-width: 100%; }
  .page-header { align-items: flex-start; }
  .card { padding: 16px 18px; }
}