/* ═══════════════════════════════════════════════════════════════
 * Login skin — extranet_ui_kit
 *
 * "Accessible & Ethical" — clinical, calming, trust-inspiring.
 * Usa tokens --ext-* definidos en tokens-extranet.css. Carga después
 * de tokens + overrides + primitives (ver extranet_assets.xml).
 *
 * Diseño:
 * - Fondo con gradient mesh teal (radial-gradients) + blobs decorativos
 *   para que NO se vea blanco/plano. Adaptado a light y dark mode.
 * - Card con glassmorphism sutil (backdrop-filter) en light; elevado
 *   sólido en dark. Border-radius generoso (16px).
 * - Inputs 48px altos, focus ring teal glow suave.
 * - Botón primario con gradient + hover shadow.
 * - Cumple WCAG AA (contraste 4.5:1+), reduced-motion, 44x44 touch.
 * ═══════════════════════════════════════════════════════════════ */

/* ─── Página / fondo ───
 * Gradient mesh: base teal suave + 3 radial-gradients decorativos
 * evocando un "backdrop" clínico pero sin neon ni excess. */
.ext-login {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--ext-space-6) var(--ext-space-4);
  font-family: var(--ext-font-family);
  color: var(--ext-ink);
  background-color: #EFF6F6;
  background-image:
    radial-gradient(ellipse 80% 60% at 15% 15%, rgba(20, 184, 166, 0.18), transparent 60%),
    radial-gradient(ellipse 70% 50% at 85% 85%, rgba(59, 130, 246, 0.14), transparent 60%),
    radial-gradient(ellipse 60% 45% at 50% 100%, rgba(245, 158, 11, 0.10), transparent 55%);
  background-attachment: fixed;
  overflow: hidden;
}

/* Blob decorativo superior izquierda — da textura orgánica al fondo */
.ext-login::before {
  content: '';
  position: absolute;
  top: -160px;
  left: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.22), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}
/* Blob inferior derecha */
.ext-login::after {
  content: '';
  position: absolute;
  bottom: -140px;
  right: -100px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.18), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

/* ─── Dark mode del fondo ───
 * Evita #000 puro (OLED smearing, flat look). Usa linear-gradient con
 * 3 stops (deep slate → indigo-tinted slate → deep) para dar profundidad
 * y textura. Arriba se superponen radial-gradients con más saturación
 * (teal vivo, indigo, amber muy sutil) para aire clínico pero premium. */
:root[data-theme="dark"] .ext-login {
  background-color: #070B16;
  background-image:
    /* Ambient glows — más saturados y con mayor opacidad que light */
    radial-gradient(ellipse 90% 65% at 12% 12%, rgba(45, 212, 191, 0.32), transparent 55%),
    radial-gradient(ellipse 80% 55% at 88% 88%, rgba(99, 102, 241, 0.28), transparent 55%),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(245, 158, 11, 0.10), transparent 50%),
    /* Base gradient — indigo-tinted slate, profundo pero no plano */
    linear-gradient(160deg, #0A1220 0%, #0F1B2E 45%, #060912 100%);
}
/* Blob superior izquierda — teal muy prominente */
:root[data-theme="dark"] .ext-login::before {
  width: 520px;
  height: 520px;
  top: -200px;
  left: -160px;
  background: radial-gradient(circle, rgba(45, 212, 191, 0.48), rgba(45, 212, 191, 0.12) 40%, transparent 72%);
  filter: blur(60px);
  opacity: 0.95;
}
/* Blob inferior derecha — indigo cinematico */
:root[data-theme="dark"] .ext-login::after {
  width: 460px;
  height: 460px;
  bottom: -180px;
  right: -140px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.42), rgba(99, 102, 241, 0.10) 40%, transparent 72%);
  filter: blur(60px);
  opacity: 0.9;
}

/* ─── Card ───
 * Glassmorphism sutil en light (backdrop-filter + white 82%),
 * elevación sólida en dark. Border-radius xl (16px), padding generoso. */
.ext-login__card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  padding: var(--ext-space-10) var(--ext-space-8) var(--ext-space-8);
  display: flex;
  flex-direction: column;
  gap: var(--ext-space-6);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--ext-radius-xl);
  box-shadow:
    0 20px 50px rgba(15, 23, 42, 0.08),
    0 8px 16px rgba(15, 23, 42, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}
/* Fallback sin backdrop-filter */
@supports not (backdrop-filter: blur(1px)) {
  .ext-login__card {
    background: var(--ext-bg-surface);
  }
}

:root[data-theme="dark"] .ext-login__card {
  background: rgba(22, 32, 52, 0.72);
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  border: 1px solid rgba(148, 163, 184, 0.14);
  box-shadow:
    /* Halo teal sutil alrededor del card — da la sensación de "elevated" */
    0 0 0 1px rgba(45, 212, 191, 0.06),
    0 30px 70px rgba(0, 0, 0, 0.65),
    0 10px 30px rgba(0, 0, 0, 0.40),
    0 0 60px rgba(45, 212, 191, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 -1px 0 rgba(0, 0, 0, 0.40);
}
@supports not (backdrop-filter: blur(1px)) {
  :root[data-theme="dark"] .ext-login__card {
    background: var(--ext-bg-elevated);
  }
}

/* ─── Brand (logo + título + subtítulo) ─── */
.ext-login__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--ext-space-3);
  text-align: center;
}
.ext-login__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--ext-radius-lg);
  background: linear-gradient(135deg, var(--ext-primary) 0%, var(--ext-primary-active) 100%);
  color: var(--ext-ink-inverse);
  box-shadow:
    0 8px 20px rgba(20, 184, 166, 0.30),
    inset 0 1px 0 rgba(255, 255, 255, 0.20);
}
.ext-login__logo [data-lucide] {
  width: 30px;
  height: 30px;
  color: var(--ext-ink-inverse);
  stroke-width: 1.75;
}
.ext-login__title {
  font-size: var(--ext-font-2xl);
  font-weight: var(--ext-weight-bold);
  color: var(--ext-ink);
  line-height: var(--ext-leading-tight);
  letter-spacing: -0.02em;
  margin: 0;
}
.ext-login__subtitle {
  font-size: var(--ext-font-sm);
  color: var(--ext-ink-muted);
  margin: 0;
  max-width: 32ch;
}

/* ─── Form ─── */
.ext-login__form {
  display: flex;
  flex-direction: column;
  gap: var(--ext-space-4);
  margin: 0;
}

/* Inputs más altos y con focus glow — override específico del login */
.ext-login__form .ext-input {
  min-height: 48px;
  padding: 0 var(--ext-space-4);
  font-size: var(--ext-font-base);
  background: var(--ext-bg-surface);
  border: 1.5px solid var(--ext-border-input);
  border-radius: var(--ext-radius-md);
  transition: border-color var(--ext-transition-fast),
              box-shadow var(--ext-transition-fast);
}
.ext-login__form .ext-input:focus-visible,
.ext-login__form .ext-input:focus {
  outline: none;
  border-color: var(--ext-primary);
  box-shadow:
    0 0 0 4px var(--ext-primary-ring),
    0 1px 2px rgba(15, 23, 42, 0.04);
}

/* Labels del login con un poco más de peso */
.ext-login__form .ext-label {
  font-size: var(--ext-font-sm);
  font-weight: var(--ext-weight-semibold);
  color: var(--ext-ink);
  letter-spacing: 0.01em;
}

/* ─── Actions (botón Ingresar) ─── */
.ext-login__actions {
  display: flex;
  flex-direction: column;
  gap: var(--ext-space-3);
  margin-top: var(--ext-space-2);
}
.ext-login__actions .ext-btn-primary {
  min-height: 48px;
  font-size: var(--ext-font-base);
  font-weight: var(--ext-weight-semibold);
  letter-spacing: 0.01em;
  background: linear-gradient(135deg, var(--ext-primary) 0%, var(--ext-primary-hover) 100%);
  border: 1px solid var(--ext-primary-active);
  box-shadow:
    0 4px 12px rgba(20, 184, 166, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
  transition: transform var(--ext-transition-fast),
              box-shadow var(--ext-transition-fast),
              filter var(--ext-transition-fast);
}
.ext-login__actions .ext-btn-primary:hover {
  box-shadow:
    0 6px 18px rgba(20, 184, 166, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
  filter: brightness(1.04);
}
.ext-login__actions .ext-btn-primary:active {
  transform: translateY(1px);
  box-shadow:
    0 2px 8px rgba(20, 184, 166, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.ext-login__actions .ext-btn-primary [data-lucide] {
  transition: transform var(--ext-transition-fast);
}
.ext-login__actions .ext-btn-primary:hover [data-lucide] {
  transform: translateX(2px);
}

/* ─── Links y footer ─── */
.ext-login__links {
  display: flex;
  justify-content: center;
  font-size: var(--ext-font-sm);
}
.ext-login__links .ext-link {
  font-weight: var(--ext-weight-medium);
  padding: var(--ext-space-2) var(--ext-space-3);
  border-radius: var(--ext-radius);
}
.ext-login__footer {
  font-size: var(--ext-font-xs);
  color: var(--ext-ink-subtle);
  text-align: center;
  margin: 0;
  padding-top: var(--ext-space-2);
  border-top: 1px solid var(--ext-border);
  letter-spacing: 0.02em;
}

/* ─── Theme toggle (posición en el card) ─── */
.ext-login__theme-toggle {
  position: absolute;
  top: var(--ext-space-4);
  right: var(--ext-space-4);
  z-index: 2;
}

/* ═══════════════════════════════════════════════════════════════
 * Dark mode — realces específicos
 *
 * Glow behind primary button + logo reforzado + inputs con más
 * contraste con el card. Separados del light para no cruzarse.
 * ═══════════════════════════════════════════════════════════════ */

/* Logo: gradient teal brillante + glow exterior más amplio en dark */
:root[data-theme="dark"] .ext-login__logo {
  background: linear-gradient(135deg, #2DD4BF 0%, #14B8A6 50%, #0D9488 100%);
  box-shadow:
    0 8px 24px rgba(45, 212, 191, 0.45),
    0 0 40px rgba(45, 212, 191, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

/* Botón primario con accent glow detrás (pseudo-element) + gradient vivo */
:root[data-theme="dark"] .ext-login__actions .ext-btn-primary {
  position: relative;
  background: linear-gradient(135deg, #2DD4BF 0%, #14B8A6 60%, #0D9488 100%);
  border-color: rgba(45, 212, 191, 0.6);
  box-shadow:
    0 6px 20px rgba(45, 212, 191, 0.35),
    0 0 30px rgba(45, 212, 191, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
:root[data-theme="dark"] .ext-login__actions .ext-btn-primary::before {
  content: '';
  position: absolute;
  inset: -8px;
  background: linear-gradient(135deg, rgba(45, 212, 191, 0.40), rgba(99, 102, 241, 0.25));
  filter: blur(16px);
  border-radius: inherit;
  z-index: -1;
  opacity: 0.7;
  pointer-events: none;
  transition: opacity var(--ext-transition-base);
}
:root[data-theme="dark"] .ext-login__actions .ext-btn-primary:hover {
  box-shadow:
    0 8px 28px rgba(45, 212, 191, 0.48),
    0 0 40px rgba(45, 212, 191, 0.26),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
  filter: brightness(1.08);
}
:root[data-theme="dark"] .ext-login__actions .ext-btn-primary:hover::before {
  opacity: 1;
}

/* Inputs en dark: bg más oscuro que el card (contraste interno) */
:root[data-theme="dark"] .ext-login__form .ext-input {
  background: rgba(15, 23, 42, 0.55);
  border-color: rgba(148, 163, 184, 0.18);
  color: var(--ext-ink);
}
:root[data-theme="dark"] .ext-login__form .ext-input::placeholder {
  color: rgba(148, 163, 184, 0.55);
}
:root[data-theme="dark"] .ext-login__form .ext-input:focus-visible,
:root[data-theme="dark"] .ext-login__form .ext-input:focus {
  background: rgba(15, 23, 42, 0.72);
  border-color: var(--ext-primary);
  box-shadow:
    0 0 0 4px rgba(45, 212, 191, 0.20),
    0 0 20px rgba(45, 212, 191, 0.15);
}

/* Footer divider más visible en dark */
:root[data-theme="dark"] .ext-login__footer {
  border-top-color: rgba(148, 163, 184, 0.12);
}

/* ─── Mobile polish (<480px) ─── */
@media (max-width: 479px) {
  .ext-login {
    padding: var(--ext-space-4) var(--ext-space-3);
  }
  .ext-login::before { width: 260px; height: 260px; top: -100px; left: -80px; }
  .ext-login::after  { width: 240px; height: 240px; bottom: -90px; right: -70px; }
  :root[data-theme="dark"] .ext-login::before { width: 340px; height: 340px; top: -130px; left: -110px; }
  :root[data-theme="dark"] .ext-login::after  { width: 300px; height: 300px; bottom: -110px; right: -90px; }
  .ext-login__card {
    padding: var(--ext-space-8) var(--ext-space-5) var(--ext-space-6);
    gap: var(--ext-space-5);
    border-radius: var(--ext-radius-lg);
  }
  .ext-login__logo { width: 56px; height: 56px; }
  .ext-login__logo [data-lucide] { width: 26px; height: 26px; }
  .ext-login__title { font-size: var(--ext-font-xl); }
}

/* ─── Reduced motion ─── */
@media (prefers-reduced-motion: reduce) {
  .ext-login__actions .ext-btn-primary,
  .ext-login__actions .ext-btn-primary [data-lucide],
  .ext-login__form .ext-input {
    transition: none;
  }
}