/**
 * Reusable Components for activAmed Website
 * BEM methodology: Block__Element--Modifier
 */

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  text-decoration: none;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  /* Minimum 48x48px touch target for accessibility */
  min-height: 48px;
  min-width: 48px;
  max-width: 100%;
  white-space: normal;
  overflow-wrap: break-word;
}

.btn:focus {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary button */
.btn--primary {
  background-color: var(--color-button-primary-bg);
  color: var(--color-button-primary-text);
  border-color: var(--color-button-primary-bg);
}

.btn--primary:hover:not(:disabled),
.btn--primary:focus:not(:disabled) {
  background-color: var(--color-button-primary-hover);
  border-color: var(--color-button-primary-hover);
  color: var(--color-button-primary-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Secondary button */
.btn--secondary {
  background-color: var(--color-button-secondary-bg);
  color: var(--color-button-secondary-text);
  border-color: var(--color-button-secondary-bg);
}

.btn--secondary:hover:not(:disabled),
.btn--secondary:focus:not(:disabled) {
  background-color: var(--color-button-secondary-hover);
  border-color: var(--color-button-secondary-hover);
  color: var(--color-button-secondary-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Outline button */
.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover:not(:disabled),
.btn--outline:focus:not(:disabled) {
  background-color: var(--color-primary);
  color: var(--color-button-outline-hover-text);
  transform: translateY(-2px);
}

/* CTA outline button hover (uses theme-aware CTA variable) */
.btn--cta-outline:hover:not(:disabled),
.btn--cta-outline:focus:not(:disabled) {
  background-color: var(--color-cta-outline-hover-bg);
}

/* Hide button icons on narrow screens to prevent overflow */
@media (max-width: 400px) {
  .btn i,
  .btn .fa-solid,
  .btn .fa-regular {
    display: none;
  }
}

/* Large button */
.btn--lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.125rem;
  min-height: 56px;
}

/* Small button */
.btn--sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.9rem;
  min-height: 40px;
}

/* Full width button */
.btn--full {
  width: 100%;
}

/* ==========================================
   CARDS
   ========================================== */

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  max-width: 100%;
  overflow: hidden;
  overflow-wrap: break-word;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__header {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
}

.card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-heading);
  margin: 0;
}

.card__subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.card__body {
  color: var(--color-text);
}

.card__footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

/* Card with image */
.card--image {
  padding: 0;
  overflow: hidden;
}

.card__image {
  width: 100%;
  height: auto;
  display: block;
}

.card--image .card__body,
.card--image .card__footer {
  padding: var(--spacing-lg);
}

/* Clickable card */
.card--clickable {
  cursor: pointer;
}

.card--clickable:focus-within {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* ==========================================
   FORM ELEMENTS
   ========================================== */

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.form-label--required::after {
  content: " *";
  color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  font-family: inherit;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  /* Minimum 48px height for touch targets */
  min-height: 48px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  background-color: var(--color-background-alt);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%232C2C2C' d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-sm) center;
  background-size: 16px;
  padding-right: var(--spacing-xl);
  appearance: none;
}

/* Checkbox and Radio */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.form-check__input {
  width: 24px;
  height: 24px;
  margin-top: 2px;
  cursor: pointer;
  flex-shrink: 0;
}

.form-check__input:focus {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* Fieldset and Legend */
fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

legend {
  font-weight: 600;
  color: var(--color-text);
  padding: 0 var(--spacing-sm);
}

/* Custom File Input */
.form-file {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-file__input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.form-file__label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-primary);
  color: var(--color-button-primary-text) !important;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  transition: opacity 0.2s ease;
  width: fit-content;
}

.form-file__label:hover {
  opacity: 0.9;
}

.form-file__label * {
  color: var(--color-button-primary-text) !important;
}

.form-file__label:focus-within,
.form-file__input:focus + .form-file__label {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.form-file__name {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-style: italic;
}

@media (min-width: 640px) {
  .form-file {
    flex-direction: row;
    align-items: center;
  }
}

.form-check__label {
  cursor: pointer;
  user-select: none;
  line-height: 1.6;
}


/* Form help text */
.form-help {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Form error */
.form-error {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--color-error);
  font-weight: 600;
}

.form-input--error,
.form-textarea--error,
.form-select--error {
  border-color: var(--color-error);
}

/* ==========================================
   BADGES
   ========================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.3;
  border-radius: var(--radius-full);
  white-space: normal;
  text-align: center;
  max-width: 100%;
}

.badge--primary {
  background-color: var(--color-primary);
  color: var(--color-badge-primary-text);
}

.badge--success {
  background-color: var(--color-success);
  color: white;
}

.badge--warning {
  background-color: var(--color-warning);
  color: white;
}

.badge--error {
  background-color: var(--color-error);
  color: white;
}

.badge--info {
  background-color: var(--color-info);
  color: white;
}

/* ==========================================
   ALERTS
   ========================================== */

.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
}

.alert__title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.alert--success {
  background-color: rgba(16, 185, 129, 0.1);
  border-color: var(--color-success);
  color: var(--color-success);
}

.alert--warning {
  background-color: rgba(245, 158, 11, 0.1);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.alert--error {
  background-color: rgba(239, 68, 68, 0.1);
  border-color: var(--color-error);
  color: var(--color-error);
}

.alert--info {
  background-color: rgba(59, 130, 246, 0.1);
  border-color: var(--color-info);
  color: var(--color-info);
}

/* ==========================================
   GRID SYSTEM
   ========================================== */

.grid {
  display: grid;
  gap: var(--spacing-lg);
  max-width: 100%;
}

.grid--2-cols {
  grid-template-columns: 1fr;
}

.grid--3-cols {
  grid-template-columns: 1fr;
}

.grid--4-cols {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid--2-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .grid--3-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .grid--3-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid--4-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1280px) {
  .grid--4-cols {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ==========================================
   ICON PLACEHOLDERS
   ========================================== */

.icon-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background-color: var(--color-background-alt);
  color: var(--color-primary);
  font-size: 2.5rem;
  margin: 0 auto var(--spacing-md);
}

.icon-placeholder--large {
  width: 120px;
  height: 120px;
  font-size: 4rem;
}

.icon-placeholder--small {
  width: 48px;
  height: 48px;
  font-size: 1.5rem;
}

/* ==========================================
   SECTION
   ========================================== */

.section {
  padding: var(--section-spacing) 0;
}

.section--alt {
  background-color: var(--color-background-alt);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section__title {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-heading);
}

.section__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 auto;
}

/* ==========================================
   BACK TO TOP BUTTON
   ========================================== */

.back-to-top {
  position: fixed;
  bottom: calc(var(--spacing-sm) + 48px + var(--spacing-sm));
  right: var(--spacing-xl);
  z-index: var(--z-fixed);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: var(--color-back-to-top-text);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-4px);
}

.back-to-top:focus {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* ==========================================
   NEWS / AKTUELLES
   ========================================== */

.news {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.news-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.news-item--pinned {
  border-left: 4px solid var(--color-accent);
  background-color: var(--color-surface-raised);
}

.news-item__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.news-item__pin {
  color: var(--color-accent);
  font-size: 0.9rem;
}

.news-item__date {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.news-item__title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-heading);
  margin: 0 0 var(--spacing-xs);
}

.news-item__body {
  color: var(--color-text);
  line-height: 1.7;
}

.news-item__body p:last-child {
  margin-bottom: 0;
}

.news-item--hidden {
  display: none;
}

.news__toggle {
  display: none;
  align-self: center;
  margin-top: var(--spacing-sm);
}