/* =====================================================================
   Observatorio · Design System
   Sistema de gestión de equipamiento astronómico
   Paleta inspirada en el cielo nocturno y la instrumentación científica.
   ===================================================================== */

html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
    position: relative;
    min-height: 100%;
}

body {
    margin-bottom: 60px;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

:root {
  /* Superficies */
  --bg: #070a13;
  --bg-elevated: #0b0f1c;
  --surface: #10152580;
  --surface-solid: #10152a;
  --surface-2: #161d38;
  --surface-hover: #1a2140;
  --border: #232c4d;
  --border-soft: #1a2140;

  /* Texto */
  --text-primary: #eef1f9;
  --text-secondary: #a3aecb;
  --text-muted: #6f7996;

  /* Acento */
  --primary: #5b7cfa;
  --primary-hover: #4665e6;
  --primary-soft: rgba(91, 124, 250, 0.14);
  --accent: #9b7bff;
  --accent-soft: rgba(155, 123, 255, 0.14);

  /* Estados */
  --success: #2fbf8f;
  --success-soft: rgba(47, 191, 143, 0.14);
  --warning: #f0a93e;
  --warning-soft: rgba(240, 169, 62, 0.14);
  --danger: #ef5468;
  --danger-soft: rgba(239, 84, 104, 0.14);
  --info: #45b8e6;
  --info-soft: rgba(69, 184, 230, 0.14);
  --neutral: #7d88a8;
  --neutral-soft: rgba(125, 136, 168, 0.14);

  /* Forma */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 20px 45px -15px rgba(0, 0, 0, 0.6);
  --transition: 160ms ease;

  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

/* ---------------------------------------------------------------------
   Base
   --------------------------------------------------------------------- */
html {
  font-size: 15px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  margin-bottom: 60px;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 900px 500px at 12% -10%, rgba(91, 124, 250, 0.16), transparent 60%),
    radial-gradient(ellipse 800px 500px at 100% 0%, rgba(155, 123, 255, 0.10), transparent 55%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  min-height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.01em;
}

hr {
  border-color: var(--border);
  opacity: 1;
}

::selection {
  background: var(--primary-soft);
  color: var(--text-primary);
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus,
.form-control:focus, .form-check-input:focus, .form-select:focus,
a:focus-visible, button:focus-visible {
  box-shadow: 0 0 0 0.2rem var(--primary-soft);
  outline: none;
}

.container {
  position: relative;
  z-index: 1;
}

/* ---------------------------------------------------------------------
   Navbar
   --------------------------------------------------------------------- */
header .navbar {
  background: rgba(10, 14, 26, 0.92) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border) !important;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35) !important;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}

.navbar-brand {
  color: var(--text-primary) !important;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.navbar-brand::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #cfe0ff, var(--primary) 60%, var(--accent));
  box-shadow: 0 0 10px 2px var(--primary-soft);
}

.navbar .nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  font-size: 0.92rem;
  padding: 0.5rem 0.85rem !important;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background-color var(--transition);
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: var(--text-primary) !important;
  background-color: var(--surface-2);
}

.navbar-toggler {
  border-color: var(--border) !important;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem var(--primary-soft) !important;
}

/* ---------------------------------------------------------------------
   Page header
   --------------------------------------------------------------------- */
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--border);
}

.page-header h1,
.page-header h2 {
  margin: 0;
  font-size: 1.55rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.page-header .page-subtitle {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-top: 0.2rem;
}

.page-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 1.05rem;
  flex-shrink: 0;
}

.page-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* ---------------------------------------------------------------------
   Cards
   --------------------------------------------------------------------- */
.card {
  background-color: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  color: var(--text-primary);
}

.card-body {
  padding: 2rem;
}

.card .display-4 {
  color: var(--text-primary);
  font-weight: 700;
}

.card .text-muted {
  color: var(--text-secondary) !important;
}

/* Stat / summary cards */
.stat-card {
  background: linear-gradient(155deg, var(--surface-2), var(--surface-solid));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.4rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform var(--transition), border-color var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
}

/* ---------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------- */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.92rem;
  padding: 0.5rem 1.1rem;
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  color: #fff;
  background-color: var(--primary);
  border-color: var(--primary);
}
.btn-primary:hover, .btn-primary:focus {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #fff;
}

.btn-secondary {
  color: var(--text-primary);
  background-color: var(--surface-2);
  border-color: var(--border);
}
.btn-secondary:hover, .btn-secondary:focus {
  background-color: var(--surface-hover);
  border-color: var(--border);
  color: var(--text-primary);
}

.btn-success {
  color: #08281d;
  background-color: var(--success);
  border-color: var(--success);
  font-weight: 600;
}
.btn-success:hover, .btn-success:focus {
  background-color: #27a67c;
  border-color: #27a67c;
  color: #08281d;
}

.btn-danger {
  color: #fff;
  background-color: var(--danger);
  border-color: var(--danger);
}
.btn-danger:hover, .btn-danger:focus {
  background-color: #dc3c51;
  border-color: #dc3c51;
  color: #fff;
}

.btn-info {
  color: #062634;
  background-color: var(--info) !important;
  border-color: var(--info) !important;
  font-weight: 600;
}
.btn-info:hover, .btn-info:focus {
  filter: brightness(1.08);
  color: #062634 !important;
}

.btn-dark {
  color: #fff;
  background-color: var(--surface-2);
  border-color: var(--border);
}
.btn-dark:hover, .btn-dark:focus {
  background-color: var(--surface-hover);
  border-color: var(--primary);
  color: #fff;
}

.btn-outline-secondary {
  color: var(--text-secondary);
  border-color: var(--border);
}
.btn-outline-secondary:hover {
  background-color: var(--surface-2);
  color: var(--text-primary);
  border-color: var(--border);
}

.btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
  opacity: 0.7;
}
.btn-close:hover {
  opacity: 1;
}

/* ---------------------------------------------------------------------
   Forms
   --------------------------------------------------------------------- */
.form-label,
label.control-label,
.form-group > label {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.88rem;
  margin-bottom: 0.35rem;
  display: inline-block;
}

.form-control,
.form-select,
select.form-control {
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.85rem;
  font-size: 0.94rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-control:focus,
.form-select:focus,
select.form-control:focus {
  background-color: var(--surface-2);
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: 0 0 0 0.2rem var(--primary-soft);
}

.form-control:disabled,
.form-control[readonly] {
  background-color: var(--surface-solid);
  color: var(--text-muted);
}

select.form-control option {
  background-color: var(--surface-solid);
  color: var(--text-primary);
}

.form-group {
  margin-bottom: 1rem;
}

.text-danger {
  color: var(--danger) !important;
  font-size: 0.83rem;
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
  color: var(--text-secondary);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder {
  text-align: start;
}

.form-check-input {
  background-color: var(--surface-2);
  border-color: var(--border);
}
.form-check-input:checked {
  background-color: var(--primary);
  border-color: var(--primary);
}

/* ---------------------------------------------------------------------
   Tables
   --------------------------------------------------------------------- */
.table-responsive-wrapper {
  background-color: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table {
  margin-bottom: 0;
  color: #ffffff;
  --bs-table-bg: transparent;
  --bs-table-striped-bg: rgba(255, 255, 255, 0.02);
  --bs-table-hover-bg: rgba(91, 124, 250, 0.08);
  vertical-align: middle;
}

.table > :not(caption) > * > * {
  border-bottom-color: var(--border-soft);
  padding: 0.85rem 1.1rem;
  color: #ffffff;
}

.table thead.table-dark th,
.table > thead {
  background-color: var(--surface-2) !important;
  color: #ffffff !important;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  border-bottom: 1px solid var(--border) !important;
  --bs-table-bg: var(--surface-2);
}

.table tbody tr {
  transition: background-color var(--transition);
}

.table tbody tr td {
  color: #ffffff;
}

.table td {
  font-size: 0.92rem;
}

.table td .btn {
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
}

/* ---------------------------------------------------------------------
   Badges (estados / tipos de equipo)
   --------------------------------------------------------------------- */
.badge {
  font-weight: 600;
  font-size: 0.76rem;
  padding: 0.4em 0.7em;
  border-radius: 999px;
  letter-spacing: 0.01em;
}

.badge.bg-success { background-color: var(--success-soft) !important; color: var(--success) !important; }
.badge.bg-danger  { background-color: var(--danger-soft) !important; color: var(--danger) !important; }
.badge.bg-warning { background-color: var(--warning-soft) !important; color: var(--warning) !important; }
.badge.bg-info    { background-color: var(--info-soft) !important; color: var(--info) !important; }
.badge.bg-primary { background-color: var(--primary-soft) !important; color: var(--primary) !important; }
.badge.bg-secondary { background-color: var(--neutral-soft) !important; color: var(--neutral) !important; }

.badge-tipo {
  background-color: var(--accent-soft);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ---------------------------------------------------------------------
   Alerts
   --------------------------------------------------------------------- */
.alert {
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 0.92rem;
}

.alert-success {
  background-color: var(--success-soft);
  border-color: rgba(47, 191, 143, 0.3);
  color: #7fe2bd;
}

.alert-danger {
  background-color: var(--danger-soft);
  border-color: rgba(239, 84, 104, 0.3);
  color: #ff96a4;
}

.alert-info {
  background-color: var(--info-soft);
  border-color: rgba(69, 184, 230, 0.3);
  color: #9adcf5;
}

.alert-warning {
  background-color: var(--warning-soft);
  border-color: rgba(240, 169, 62, 0.3);
  color: #f6c67c;
}

/* ---------------------------------------------------------------------
   Login
   --------------------------------------------------------------------- */
.auth-shell {
  min-height: calc(100vh - 220px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background-color: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.25rem 2rem;
}

.auth-card .auth-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin: 0 auto 1rem;
}

.auth-card h1 {
  font-size: 1.3rem;
  text-align: center;
  margin-bottom: 0.25rem;
}

.auth-card .auth-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-bottom: 1.5rem;
}

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */
.footer {
  position: relative;
  margin-top: auto;
  width: 100%;
  white-space: nowrap;
  line-height: 60px;
  background-color: rgba(10, 14, 26, 0.92);
  border-top: 1px solid var(--border) !important;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer a {
  color: var(--text-secondary);
}

.footer a:hover {
  color: var(--primary);
}

/* ---------------------------------------------------------------------
   Misc
   --------------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-secondary);
}

.empty-state i {
  font-size: 2rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: block;
}

main {
  flex: 1;
  animation: fadeIn 220ms ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 576px) {
  .card-body {
    padding: 1.25rem;
  }
  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }
}