/* ===================================================================
   COMPONENTS.CSS - Reusable UI Components
   Portfolio Website for Eric Koens
   =================================================================== */

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

.btn {
  display: inline-block;
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  text-align: center;
  text-decoration: none;
  line-height: 1;
  padding: 12px 32px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

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

/* Primary Button */
.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Secondary Button (Outlined) */
.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary:active {
  transform: translateY(0);
}

/* Button with icon */
.btn i {
  margin-right: var(--spacing-xs);
}

/* Button group */
.btn-group {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

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

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

.card {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-header {
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.card-subtitle {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.card-body {
  margin-bottom: var(--spacing-md);
}

.card-footer {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

/* Card with image */
.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

/* ===================================================================
   GRID LAYOUTS
   =================================================================== */

.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

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

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

/* Responsive grids */
@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===================================================================
   SKILL/TECHNOLOGY ICONS
   =================================================================== */

.skill-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  text-align: center;
  border-radius: var(--radius-lg);
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.skill-icon:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.skill-icon i {
  font-size: 48px;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.skill-icon-label {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

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

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  background-color: rgba(30, 58, 138, 0.1);
  color: var(--color-primary);
  border-radius: var(--radius-xl);
  margin-right: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

/* ===================================================================
   FORMS
   =================================================================== */

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

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

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

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

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

/* Form validation states */
.form-input.error,
.form-textarea.error {
  border-color: var(--color-error);
}

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

.form-error-message {
  display: none;
  font-size: var(--font-size-small);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

.form-error-message.visible {
  display: block;
}

.form-success-message {
  display: none;
  padding: var(--spacing-md);
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.form-success-message.visible {
  display: block;
}

/* ===================================================================
   SECTIONS & HEADINGS
   =================================================================== */

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

.section-title {
  font-size: var(--font-size-h2);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===================================================================
   FOOTER
   =================================================================== */

.footer {
  background-color: var(--color-background-alt);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  align-items: center;
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--section-padding-horizontal);
}

.footer-left {
  text-align: left;
}

.footer-center {
  text-align: center;
}

.footer-right {
  text-align: right;
}

.footer-text {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin: 0;
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-link {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-primary);
}

.social-icons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-secondary);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.social-icon:hover {
  color: var(--color-primary);
  background-color: rgba(30, 58, 138, 0.1);
  transform: translateY(-2px);
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: var(--z-fixed);
}

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

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

/* ===================================================================
   MOBILE RESPONSIVE ADJUSTMENTS
   =================================================================== */

@media (max-width: 768px) {
  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    text-align: center;
  }

  .footer-left,
  .footer-right {
    text-align: center;
  }

  .social-icons {
    justify-content: center;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
}