/* Additional styles for interactive elements */

/* Tabs */
.tabs-container {
  margin: 2rem 0;
}

.tab-buttons {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 2px solid var(--color-primary-light);
  margin-bottom: 1.5rem;
}

.tab-button {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.tab-button.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
  animation: fadeIn 0.5s ease;
}

.tab-content.active {
  display: block;
}

/* Progress bars */
.progress-container {
  margin: 1.5rem 0;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.progress-track {
  height: 0.75rem;
  background-color: var(--color-primary-light);
  border-radius: 0.375rem;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: 0.375rem;
  transition: width 1s ease-out;
}

/* Comparison slider */
.comparison-slider {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
  margin: 2rem 0;
}

.comparison-before,
.comparison-after {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}

.comparison-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--color-white);
  cursor: ew-resize;
  z-index: 10;
}

.comparison-handle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background-color: var(--color-white);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}

.comparison-handle::after {
  content: '↔';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-primary);
  font-size: 1.25rem;
  font-weight: bold;
}

/* Carbon calculator */
.carbon-calculator {
  background-color: var(--color-primary-light);
  padding: 2rem;
  border-radius: 0.5rem;
  margin: 2rem 0;
}

.calculator-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .calculator-form {
    grid-template-columns: 1fr 1fr;
  }
}

.calculator-input {
  display: flex;
  flex-direction: column;
}

.calculator-input label {
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.calculator-input input {
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  font-size: 1rem;
}

.calculator-button {
  grid-column: 1 / -1;
  text-align: center;
}

.calculator-results {
  display: none;
  background-color: var(--color-white);
  padding: 1.5rem;
  border-radius: 0.5rem;
  margin-top: 1.5rem;
}

.calculator-results.visible {
  display: block;
  animation: fadeIn 0.5s ease;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

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

@media (min-width: 992px) {
  .result-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.result-item {
  text-align: center;
  padding: 1rem;
  background-color: var(--color-primary-light);
  border-radius: 0.25rem;
}

.result-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.result-label {
  font-size: 0.875rem;
  color: var(--color-text);
}

/* Animated counters */
.counter-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

/* Form validation */
.error-message {
  color: #d32f2f;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

input.error,
textarea.error,
select.error {
  border-color: #d32f2f;
}

.form-success-message {
  background-color: #4caf50;
  color: white;
  padding: 1rem;
  border-radius: 0.25rem;
  text-align: center;
  margin: 1rem 0;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Tooltips */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltip-text {
  visibility: hidden;
  width: 200px;
  background-color: var(--color-dark);
  color: var(--color-white);
  text-align: center;
  border-radius: 0.25rem;
  padding: 0.5rem;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.tooltip .tooltip-text::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: var(--color-dark) transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* Interactive cards */
.interactive-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.interactive-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Scroll to top button */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 100;
}

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

.scroll-to-top:hover {
  background-color: var(--color-primary-dark);
}

/* Sticky header on scroll */
.sticky-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}

.sticky-header.visible {
  transform: translateY(0);
}

/* Loading spinner */
.loading-spinner {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  border: 0.25rem solid var(--color-primary-light);
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Calculator refinement */
.calculator-url-input { grid-column: 1 / -1; }
.calculator-input small { margin-top: .35rem; color: var(--text-light); font-size: .82rem; }
.calculator-input label span { color: var(--text-light); font-weight: 400; }
.calculator-status { grid-column: 1 / -1; margin: 0; padding: .75rem 1rem; border-radius: .4rem; background: rgba(52,152,219,.10); color: var(--text-color); }
.calculator-status[data-type="success"] { background: rgba(46,204,113,.14); color: #176b3b; }
.calculator-status[data-type="error"] { background: rgba(231,76,60,.12); color: #9b2c22; }
.calculator-button .btn:disabled { opacity: .65; cursor: wait; }
.calculator-basis { font-size: .9rem; color: var(--text-light); }
.calculator-methodology { margin-top: 1.5rem; padding: 1.25rem 1.5rem; background: rgba(255,255,255,.72); border: 1px solid rgba(46,204,113,.25); border-radius: .5rem; }
.calculator-methodology h3 { font-size: 1.2rem; margin-bottom: .6rem; }
.calculator-methodology p { margin-bottom: .75rem; font-size: .92rem; }
.calculator-methodology p:last-child { margin-bottom: 0; }
.methodology-source { font-size: .82rem !important; }
.site-footer { background: var(--background-dark); color: #dbe8ee; padding: 2.5rem 0; text-align: center; }
.site-footer p { margin: .25rem 0; }
.site-footer .footer-bottom { color: #a9bfca; font-size: .85rem; }