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

:root {
  --navy:        #080d17;
  --navy-2:      #111c2e;
  --navy-card:   #0f1726;
  --navy-border: #33445f;
  --navy-3:      #162238;
  --border-control: #5b6d88;
  --blue:        #1a3a7c;
  --blue-light:  #2451a8;
  --green:       #34d399;
  --green-action:#167a4a;
  --green-dark:  #126a40;
  --gold:        #e8b84b;
  --red:         #e74c3c;
  --white:       #f8fafc;
  --white-90:    rgba(248,250,252,0.92);
  --white-60:    #aeb8c7;
  --white-10:    rgba(255,255,255,0.08);
  --radius:      12px;
  --radius-sm:   6px;
  --font-ui:     'Trebuchet MS', system-ui, sans-serif;
  --font:        'Georgia', serif;
}

html, body {
  height: 100%;
  background: var(--navy);
  color: var(--white-90);
  font-family: var(--font-ui);
  background-image:
    radial-gradient(ellipse at 20% 10%, rgba(26,124,58,0.12) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 90%, rgba(26,58,124,0.15) 0%, transparent 55%);
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px 16px;
  padding-top: env(safe-area-inset-top, 24px);
  padding-bottom: env(safe-area-inset-bottom, 24px);
}

/* ── Card de login ── */
.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--navy-card);
  border: 1px solid var(--navy-border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 48px rgba(0,0,0,0.6);
}

/* ── Header de la card ── */
.login-header {
  background: linear-gradient(135deg, var(--navy-2), var(--navy-3));
  border-bottom: 1px solid var(--navy-border);
  padding: 32px 28px 24px;
  text-align: center;
}

.login-emblem {
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.login-emblem img {
  display: block;
  width: 88px;
  height: 88px;
  object-fit: contain;
  border: 0;
  box-shadow: none;
  filter: none;
}

.login-title {
  font-family: var(--font);
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--white);
  margin-bottom: 4px;
}

.login-subtitle {
  font-size: 0.78rem;
  color: var(--white-60);
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

/* ── Formulario ── */
.login-body {
  padding: 28px 28px 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--white-60);
  margin-bottom: 6px;
  font-weight: bold;
}

.form-group input {
  width: 100%;
  background: var(--navy-3);
  color: var(--white-90);
  border: 1px solid var(--border-control);
  border-radius: var(--radius-sm);
  padding: 13px 14px;
  font-size: 1rem;
  font-family: var(--font-ui);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
}

.form-group input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(31,187,110,0.18);
}

.form-group input::placeholder {
  color: #8f9bad;
}

/* ── Error ── */
.login-error {
  display: none;
  background: rgba(231,76,60,0.15);
  border: 1px solid rgba(231,76,60,0.4);
  border-radius: var(--radius-sm);
  color: #ff8a80;
  font-size: 0.85rem;
  padding: 10px 14px;
  margin-bottom: 18px;
  text-align: center;
}
.login-error.visible { display: block; }

/* ── Botón ── */
.btn-login {
  width: 100%;
  background: linear-gradient(135deg, var(--green-action), var(--green-dark));
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  padding: 15px 20px;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 0 4px 16px rgba(22,122,74,0.32);
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn-login:hover:not(:disabled) { filter: brightness(1.1); transform: translateY(-1px); }
.btn-login:active { transform: scale(0.97); }
.btn-login:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* Spinner */
.spinner {
  width: 18px; height: 18px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
}
.btn-login.loading .spinner { display: block; }
.btn-login.loading .btn-text { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Footer ── */
.login-footer {
  padding: 16px 28px 24px;
  border-top: 1px solid var(--navy-border);
  text-align: center;
  font-size: 0.75rem;
  color: var(--white-60);
}

/* ── Enlace cambiar contraseña ── */
.link-change-pwd {
  display: block;
  text-align: center;
  font-size: 0.8rem;
  color: var(--white-60);
  margin-top: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.15s;
}
.link-change-pwd:hover { color: var(--white-90); }

/* ── Vista cambio de contraseña ── */
.change-pwd-view { display: none; }
.change-pwd-view.active { display: block; }
.login-view { display: block; }
.login-view.hidden { display: none; }

.pwd-strength {
  height: 3px;
  border-radius: 2px;
  margin-top: 6px;
  background: var(--navy-border);
  overflow: hidden;
}
.pwd-strength-bar {
  height: 100%;
  border-radius: 2px;
  width: 0%;
  transition: width 0.2s, background 0.2s;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--white-60);
  cursor: pointer;
  margin-bottom: 18px;
  transition: color 0.15s;
}
.back-link:hover { color: var(--white-90); }

/* ── Responsive ── */
@media (max-width: 440px) {
  .login-header { padding: 24px 20px 20px; }
  .login-body   { padding: 22px 20px 18px; }
  .login-footer { padding: 14px 20px 20px; }
  .login-title  { font-size: 1.2rem; }
}

.login-contact-link { color: rgba(255,255,255,0.5); text-decoration: none; transition: color 0.15s; }
.login-contact-link:hover { color: rgba(255,255,255,0.8); }