/* ─── Reset / Base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg:        #f8fafc;
  --surface:   #ffffff;
  --border:    #e2e8f0;
  --text:      #0f172a;
  --text-muted:#64748b;
  --accent:    #0d9488;
  --accent-h:  #0f766e;
  --danger:    #dc2626;
  --danger-h:  #b91c1c;
  --warn:      #d97706;
  --green:     #16a34a;
  --radius:    8px;
  --shadow:    0 1px 3px rgba(0,0,0,.08);
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; }
.hidden { display: none !important; }

/* ─── Login ─────────────────────────────────────────────────────────────────── */
.screen { min-height: 100vh; }
#screen-login {
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #f0fdfa 0%, #f8fafc 60%, #eff6ff 100%);
  padding: 1.5rem;
}
.login-wrap { width: 100%; max-width: 380px; display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
.login-brand { display: flex; align-items: center; gap: .5rem; }
.login-logo  { font-size: 1.875rem; font-weight: 800; color: var(--accent); letter-spacing: -.5px; }
.login-badge { font-size: .6875rem; font-weight: 700; background: var(--accent); color: #fff; padding: .2rem .5rem; border-radius: 999px; letter-spacing: .04em; text-transform: uppercase; }
.login-box   { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; width: 100%; box-shadow: 0 4px 24px rgba(0,0,0,.07); }
.login-title { font-size: 1.0625rem; font-weight: 700; margin-bottom: 1.5rem; color: var(--text); }
.login-err   { color: var(--danger); font-size: .8125rem; margin-top: .625rem; }

/* ─── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: .35rem; flex: 1; min-width: 0; }
.form-group label { font-size: .75rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; }
.label-hint { font-weight: 400; text-transform: none; letter-spacing: 0; }
.form-group input, .form-group select, .form-group textarea {
  border: 1px solid var(--border); border-radius: var(--radius); padding: .5rem .75rem;
  font-size: .875rem; color: var(--text); background: var(--surface); transition: border-color .15s;
  font-family: inherit; resize: vertical; width: 100%;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(13,148,136,.12);
}
.form-row { display: flex; gap: 1rem; }
.form-row .form-group { margin-bottom: 0; }

/* Campos readonly — modo solo lectura */
.form-group input[readonly], .form-group textarea[readonly] {
  background: var(--bg); border-color: var(--border); color: var(--text-muted);
  cursor: default; user-select: text;
}
.form-group input[readonly]:focus, .form-group textarea[readonly]:focus {
  box-shadow: none; border-color: var(--border);
}

/* ─── Buttons ───────────────────────────────────────────────────────────────── */
.btn-primary {
  background: var(--accent); color: #fff; border: none; border-radius: var(--radius);
  padding: .6rem 1.25rem; font-weight: 600; font-size: .875rem; cursor: pointer;
  transition: background .15s; white-space: nowrap;
}
.btn-primary:hover { background: var(--accent-h); }
.btn-ghost {
  background: transparent; color: var(--text-muted); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .6rem 1.25rem; font-weight: 600; font-size: .875rem;
  cursor: pointer; transition: all .15s; white-space: nowrap;
}
.btn-ghost:hover { background: var(--bg); color: var(--text); }
.btn-danger {
  background: var(--danger); color: #fff; border: none; border-radius: var(--radius);
  padding: .35rem .75rem; font-weight: 600; font-size: .8125rem; cursor: pointer; transition: background .15s;
}
.btn-danger:hover { background: var(--danger-h); }
.btn-sm { padding: .4rem .875rem; font-size: .8125rem; }
.btn-icon {
  background: transparent; border: 1px solid var(--border); border-radius: var(--radius);
  padding: .3rem .6rem; cursor: pointer; font-size: .8125rem; color: var(--text-muted);
  transition: all .15s; line-height: 1;
}
.btn-icon:hover { background: var(--bg); color: var(--text); }
.w-full { width: 100%; }

/* ─── Topbar ────────────────────────────────────────────────────────────────── */
.topbar {
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: .875rem 1.5rem; display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 50;
}
.topbar-logo { font-size: 1.125rem; font-weight: 800; color: var(--accent); letter-spacing: -.5px; }
.topbar-tag  { font-size: .6875rem; font-weight: 700; background: var(--accent); color: #fff; padding: .125rem .4rem; border-radius: 4px; margin-left: .375rem; vertical-align: middle; }
.topbar-actions { display: flex; gap: .5rem; align-items: center; }

/* ─── Main ──────────────────────────────────────────────────────────────────── */
.main { padding: 1.5rem; max-width: 1200px; margin: 0 auto; }

/* ─── Alertas ───────────────────────────────────────────────────────────────── */
.alertas { background: #fef3c7; border: 1px solid #fcd34d; border-radius: var(--radius); padding: .875rem 1rem; margin-bottom: 1.25rem; font-size: .875rem; color: #92400e; }

/* ─── Stats ─────────────────────────────────────────────────────────────────── */
.stats-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; }
.stat-num  { font-size: 1.75rem; font-weight: 800; color: var(--accent); line-height: 1; }
.stat-lbl  { font-size: .75rem; font-weight: 600; color: var(--text-muted); margin-top: .25rem; text-transform: uppercase; letter-spacing: .03em; }

/* ─── Card / Table ──────────────────────────────────────────────────────────── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.card-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.25rem; border-bottom: 1px solid var(--border); gap: 1rem; flex-wrap: wrap; }
.card-title  { font-weight: 700; font-size: .9375rem; }
.buscador { border: 1px solid var(--border); border-radius: var(--radius); padding: .4rem .75rem; font-size: .875rem; color: var(--text); background: var(--bg); width: 200px; }
.buscador:focus { outline: none; border-color: var(--accent); }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; min-width: 560px; }
thead th { background: var(--bg); font-size: .75rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; padding: .75rem 1rem; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
tbody td { padding: .75rem 1rem; border-bottom: 1px solid var(--border); font-size: .875rem; vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg); }
.td-actions { display: flex; gap: .375rem; align-items: center; }

/* ─── Badges ────────────────────────────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; gap: .25rem; font-size: .75rem; font-weight: 600; padding: .175rem .5rem; border-radius: 999px; white-space: nowrap; }
.badge-green  { background: #dcfce7; color: var(--green); }
.badge-red    { background: #fee2e2; color: var(--danger); }
.badge-warn   { background: #fef3c7; color: var(--warn); }
.badge-gray   { background: #f1f5f9; color: var(--text-muted); }
.badge-plan-unico   { background: #f1f5f9; color: var(--text-muted); }
.badge-plan-mensual { background: #dbeafe; color: #1d4ed8; }
.badge-plan-plus    { background: #fae8ff; color: #7e22ce; }

/* ─── Días ──────────────────────────────────────────────────────────────────── */
.dias-ok   { color: var(--green); font-weight: 700; }
.dias-warn { color: var(--warn);  font-weight: 700; }
.dias-bad  { color: var(--danger);font-weight: 700; }

/* ─── Datos del sistema (details/summary) ────────────────────────────────────── */
.fi-avanzado { margin-top: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.fi-avanzado summary {
  padding: .625rem .875rem; font-size: .8125rem; font-weight: 600; color: var(--text-muted);
  cursor: pointer; user-select: none; list-style: none; display: flex; align-items: center; gap: .4rem;
}
.fi-avanzado summary::before { content: '▶'; font-size: .6rem; transition: transform .2s; }
.fi-avanzado[open] summary::before { transform: rotate(90deg); }
.fi-avanzado summary::-webkit-details-marker { display: none; }
.fi-avanzado-body { padding: 1rem; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: .875rem; background: var(--bg); }
.fi-avanzado .readonly-note { font-size: .75rem; color: var(--text-muted); margin-bottom: -.25rem; display: flex; align-items: center; gap: .3rem; }

/* ─── Modal ─────────────────────────────────────────────────────────────────── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 100; backdrop-filter: blur(2px); }
.modal {
  position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 1.75rem; width: calc(100% - 2rem); max-width: 540px; max-height: 90vh; overflow-y: auto;
  z-index: 101; box-shadow: 0 24px 64px rgba(0,0,0,.18);
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; }
.modal-header h2 { font-size: 1.0625rem; font-weight: 700; }
.modal-close { background: transparent; border: none; font-size: 1.125rem; cursor: pointer; color: var(--text-muted); padding: .25rem; line-height: 1; border-radius: var(--radius); }
.modal-close:hover { background: var(--bg); color: var(--text); }
.modal-footer { display: flex; justify-content: flex-end; gap: .5rem; margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .form-row { flex-direction: column; gap: .875rem; }
  .modal { padding: 1.25rem; border-radius: 12px; }
  .topbar { padding: .75rem 1rem; }
  .main { padding: 1rem; }
  .topbar-logo { font-size: 1rem; }
  .buscador { width: 140px; }
}