/* ============================================
   Safe&Sound Robotics — A1AN Web
   Authentication Pages
   ============================================ */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  padding: var(--spacing-8) var(--spacing-6);
  position: relative;
  overflow: hidden;
}

.auth-page::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(83, 178, 184, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.auth-page::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(83, 178, 184, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.auth-card {
  width: 100%;
  max-width: 660px; /* Expansión máxima para acomodar dobles columnas reales */
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6) var(--spacing-10); /* Menos relleno arriba/abajo para que acorte */
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4); /* Reducir de 8 a 4 para acortarlo */
}

.auth-logo img {
  height: 52px;
}

.auth-logo span {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
}

.auth-header {
  text-align: center;
  margin-bottom: var(--spacing-5); /* Reducir de 8 a 5 */
}

.auth-header h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-2);
}

.auth-header p {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4); /* Reducimos el espacio un poco */
}

.auth-form .form-group label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

.auth-form .btn {
  width: 100%;
  margin-top: var(--spacing-2);
}

.auth-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4);
}

.auth-row .form-group {
  min-width: 0;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  margin: var(--spacing-4) 0;
  color: var(--color-gray);
  font-size: var(--font-size-xs);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.auth-footer {
  text-align: center;
  margin-top: var(--spacing-6);
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--color-border);
}

.auth-footer p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

.auth-footer a {
  color: var(--color-accent);
  font-weight: 600;
  transition: color var(--transition-fast);
}

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

.auth-links {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-3);
}

.auth-links a {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.auth-links a:hover {
  color: var(--color-secondary);
}

.auth-message {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  display: none;
  margin-bottom: var(--spacing-4);
}

.auth-message.show {
  display: block;
}

.auth-message.success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.auth-message.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* --- Robot Linking Modal --- */
.robot-link-overlay {
  position: fixed;
  inset: 0;
  background: rgba(29, 50, 83, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: var(--spacing-6);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.robot-link-overlay.active {
  opacity: 1;
  visibility: visible;
}

.robot-link-card {
  width: 100%;
  max-width: 480px;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-10);
  box-shadow: var(--shadow-xl);
  text-align: center;
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.robot-link-overlay.active .robot-link-card {
  transform: translateY(0);
}

.robot-link-card h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-2);
}

.robot-link-card > p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-bottom: var(--spacing-8);
}

.robot-link-tabs {
  display: flex;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-6);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 4px;
}

.robot-link-tab {
  flex: 1;
  padding: 0.6rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-sm);
  color: var(--color-gray);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
}

.robot-link-tab.active {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.robot-link-content {
  display: none;
}

.robot-link-content.active {
  display: block;
}

.robot-id-input {
  margin-bottom: var(--spacing-6);
}

.robot-id-input input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-lg);
  text-align: center;
  letter-spacing: 0.1em;
  font-weight: 600;
  transition: border-color var(--transition-fast);
}

.robot-id-input input::placeholder {
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-gray);
  font-size: var(--font-size-sm);
}

.robot-id-input input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(83, 178, 184, 0.15);
}

.qr-placeholder {
  width: 200px;
  height: 200px;
  margin: 0 auto var(--spacing-6);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);
  gap: 2px;
  padding: var(--spacing-4);
  border: 2px dashed var(--color-border);
}

.qr-placeholder span {
  background: var(--color-primary);
  border-radius: 2px;
  opacity: 0.3;
}

.qr-placeholder span:nth-child(odd) {
  opacity: 0.7;
}

.qr-placeholder span:nth-child(3n) {
  opacity: 0.5;
}

.qr-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-bottom: var(--spacing-6);
}

.robot-link-skip {
  display: block;
  margin-top: var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  cursor: pointer;
  background: none;
  border: none;
  text-decoration: underline;
}

.robot-link-skip:hover {
  color: var(--color-secondary);
}

.password-toggle {
  position: relative;
  display: block;
  width: 100%;
}

.password-toggle input {
  width: 100%;
  padding-right: 3rem;
}

.password-toggle button {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray);
  padding: 4px;
}

.password-toggle button:hover {
  color: var(--color-primary);
}

.password-toggle button svg {
  width: 20px;
  height: 20px;
}