/* static/css/login.css */

:root {
  --lg-font: "Roboto", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --lg-text: #0b1221;
  --lg-muted: #5a6675;
  --lg-primary: #1a4ad8;
  --lg-primary-hover: #153bb1;
  --lg-focus: #2f6ae0;
  --lg-focus-ring: rgba(47,106,224,.25);
  --lg-bg: #0b1020;
  --lg-border: #d0d7e2;
  --lg-radius: 16px;
  --lg-shadow: 0 18px 45px rgba(15,23,42,.65);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--lg-font);
  color: var(--lg-text);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #020617 0%, #0f172a 36%, #020617 100%);
  position: relative;
  overflow: hidden;
}

/* Fondo institucional y efectos */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: url("/static/img/fondo.jpg") center/cover no-repeat;
  opacity: .30;
  filter: blur(3px);
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at top, rgba(37,99,235,.35), transparent 55%),
              radial-gradient(circle at bottom, rgba(8,47,73,.6), transparent 60%);
  mix-blend-mode: soft-light;
  z-index: -1;
}

.login-container {
  width: 100%;
  max-width: 380px;
  background: rgba(248, 250, 252, 0.98);
  border-radius: var(--lg-radius);
  box-shadow: var(--lg-shadow);
  border: 1px solid rgba(148,163,184,.45);
  overflow: hidden;
  margin: 16px; /* Margen seguro para móviles */
}

/* Header */
.login-header {
  padding: 18px 22px 16px;
  background: linear-gradient(135deg, #1a4ad8, #2563eb);
  color: #e5edff;
  display: flex;
  align-items: center;
  gap: 12px;
}

.login-logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(15,23,42,.22);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px rgba(226,232,240,.3);
}

.login-logo img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: brightness(1.1) contrast(1.05);
}

.login-title-block { text-align: left; }
.login-title { margin: 0; font-size: 20px; font-weight: 650; letter-spacing: .02em; }
.login-subtitle { margin: 2px 0 0; font-size: 12px; opacity: .85; }

/* Cuerpo del Login */
.login-body { padding: 20px 22px 22px; }

/* Alertas y Mensajes */
.flash-stack { text-align: left; margin-bottom: 12px; }

.alert {
  padding: 10px 12px;
  border-radius: 8px;
  margin: 6px 0;
  border: 1px solid #cbd5f5;
  font-size: 13px;
  background: #eef2ff;
  color: #1e3a8a;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.alert::before { content: "●"; font-size: 9px; margin-top: 3px; }
.alert-success { background: #ecfdf3; color: #166534; border-color: #bbf7d0; }
.alert-info    { background: #e0f2fe; color: #075985; border-color: #bae6fd; }
.alert-warning { background: #fffbeb; color: #92400e; border-color: #fed7aa; }
.alert-danger  { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }

/* Formulario */
form { margin: 0; }
.form-group { text-align: left; margin-bottom: 14px; }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--lg-muted);
  margin-bottom: 4px;
}

.form-control {
  width: 100%;
  padding: 11px 12px;
  font-size: 15px;
  border-radius: 10px;
  border: 2px solid var(--lg-border);
  background: #f8fafc;
  color: var(--lg-text);
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}

.form-control:focus {
  border-color: var(--lg-focus);
  box-shadow: 0 0 0 3px var(--lg-focus-ring);
  background: #fff;
}

.form-control::placeholder { color: #9ca3af; }

/* Estilo para inputs bloqueados (readonly) */
.form-control[readonly] {
    background-color: #e2e8f0;
    color: #64748b;
    cursor: not-allowed;
    border-color: #cbd5e1;
}

/* Footer y Botones */
.login-footer { margin-top: 8px; }

.btn-primary {
  width: 100%;
  padding: 11px 14px;
  border-radius: 999px;
  border: 0;
  background: var(--lg-primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .03em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .15s ease, box-shadow .15s ease, transform .06s ease;
  box-shadow: 0 7px 20px rgba(37,99,235,.4);
}

.btn-primary:hover {
  background: var(--lg-primary-hover);
  box-shadow: 0 9px 26px rgba(37,99,235,.55);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 5px 16px rgba(37,99,235,.4);
}

.login-meta {
  margin-top: 15px;
  font-size: 12px;
  color: #6b7280;
  text-align: center;
}

.login-meta a { color: #6b7280; text-decoration: none; }
.login-meta a:hover { text-decoration: underline; color: var(--lg-primary); }