/* ============================================
   KARLS BUTTONS - Modern Design System
   Hierarchie: SSO (Grün) > Primary (Rot) > Secondary (Outline)
   ============================================ */

/* Base Button */
.btn {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-radius: var(--radius);
  cursor: pointer;
  isolation: isolate;
  overflow: hidden;
  transition: all 0.2s ease-in-out;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: normal;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ============================================
   SSO BUTTONS - Höchste Priorität (Karls Grün)
   ============================================ */

/* SSO Primary - Login/Register */
.btn--sso {
  background: var(--color-secondary);
  border: 1px solid var(--color-secondary);
  color: white;
  font-size: 1rem;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  box-shadow: 0 2px 8px rgba(121, 181, 28, 0.2);
}

.btn--sso:hover {
  background: #6aa018;
  border-color: #6aa018;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(121, 181, 28, 0.35);
}

/* SSO Profile Icon Button */
.btn--sso-profile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: white;
  border: 2px solid var(--color-secondary);
  border-radius: 50%;
  color: var(--color-secondary);
  transition: all 0.2s ease-in-out;
}

.btn--sso-profile:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(121, 181, 28, 0.3);
}

.btn--sso-profile svg {
  stroke: var(--color-secondary);
  transition: stroke 0.2s ease;
}

.btn--sso-profile:hover svg {
  stroke: white;
}

/* SSO Logout Button */
.btn--sso-logout {
  background: white;
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
  font-size: 0.875rem;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
}

.btn--sso-logout:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: white;
  transform: translateY(-2px);
}

/* Unidy Logout Button Override */
u-logout-button button {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-radius: var(--radius);
  cursor: pointer;
  isolation: isolate;
  overflow: hidden;
  transition: all 0.2s ease-in-out;
  font-family: var(--font-heading);
  font-weight: normal;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: white;
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
  font-size: 0.875rem;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
}

u-logout-button button:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: white;
  transform: translateY(-2px);
}

/* ============================================
   PRIMARY BUTTONS - Karls Rot (Content Actions)
   ============================================ */

.btn--primary {
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  color: white;
  font-size: 1rem;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(227, 6, 19, 0.3);
}

/* ============================================
   SECONDARY BUTTONS - Outline (Less Important)
   ============================================ */

.btn--secondary {
  background: white;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-size: 1rem;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
}

.btn--secondary:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* ============================================
   BUTTON SIZES
   ============================================ */

.btn--large {
  font-size: 1.125rem;
  gap: 0.75rem;
  padding: 1rem 2rem;
}

.btn--small {
  font-size: 0.875rem;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
}

/* Large SSO Button */
.btn--sso.btn--large {
  font-size: 1.125rem;
  gap: 0.75rem;
  padding: 1rem 2rem;
}

/* ============================================
   STATES
   ============================================ */

/* Disabled State */
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Focus State */
.btn:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.btn--primary:focus-visible {
  outline-color: var(--color-primary);
}

/* ============================================
   RESPONSIVE - MOBILE OPTIMIERUNG
   ============================================ */

@media (max-width: 768px) {
  /* Kleinere Buttons auf Mobile */
  .btn {
    font-size: 0.9rem;
    padding: 0.65rem 1.25rem;
  }

  .btn--large {
    font-size: 1rem;
    padding: 0.85rem 1.5rem;
  }

  .btn--small {
    font-size: 0.8rem;
    padding: 0.45rem 0.85rem;
  }

  /* SSO Buttons Mobile */
  .btn--sso {
    font-size: 0.9rem;
    padding: 0.65rem 1.25rem;
  }

  .btn--sso.btn--large {
    font-size: 1rem;
    padding: 0.85rem 1.5rem;
  }

  /* Profile Icon Mobile - Etwas kleiner */
  .btn--sso-profile {
    width: 40px;
    height: 40px;
  }

  .btn--sso-profile svg {
    width: 20px;
    height: 20px;
  }

  /* Logout Button Mobile */
  .btn--sso-logout,
  u-logout-button button {
    font-size: 0.8rem;
    padding: 0.45rem 0.85rem;
  }
}

@media (max-width: 480px) {
  /* Extra kleine Screens (iPhone SE, etc.) */
  .btn {
    font-size: 0.85rem;
    padding: 0.6rem 1rem;
  }

  .btn--large {
    font-size: 0.95rem;
    padding: 0.75rem 1.25rem;
  }

  /* SSO Buttons noch kompakter */
  .btn--sso {
    font-size: 0.85rem;
    padding: 0.6rem 1rem;
  }

  .btn--sso.btn--large {
    font-size: 0.95rem;
    padding: 0.75rem 1.25rem;
  }
}