/**
 * Podpisal.ru - Calculator Styles
 * Стили для калькуляторов
 */

/* ============================================
   Page Header
   ============================================ */

.page-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-3xl);
}

.page-header h1 {
  margin-bottom: var(--spacing-md);
}

/* ============================================
   Calculator Grid
   ============================================ */

.calc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

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

@media (max-width: 480px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Calculator Card
   ============================================ */

.calc-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
}

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

.calc-card--popular {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.02) 0%, rgba(37, 99, 235, 0.06) 100%);
}

.calc-card__badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.calc-card__icon {
  width: 72px;
  height: 72px;
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-base);
}

.calc-card:hover .calc-card__icon {
  transform: scale(1.1);
}

.calc-card__icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.calc-card__content {
  flex: 1;
}

.calc-card__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.calc-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-md) 0;
  line-height: 1.4;
}

.calc-card__action {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.calc-card:hover .calc-card__action {
  gap: var(--spacing-sm);
}

@media (max-width: 480px) {
  .calc-card {
    padding: var(--spacing-lg);
  }

  .calc-card__icon {
    width: 56px;
    height: 56px;
  }

  .calc-card__title {
    font-size: var(--font-size-sm);
  }
}

.calc-section {
  margin-bottom: var(--spacing-3xl);
  padding-top: var(--spacing-xl);
}

.calc-section:first-of-type {
  padding-top: 0;
}

.calc-section h2 {
  margin-bottom: var(--spacing-md);
}

.calc-section > p {
  margin-bottom: var(--spacing-xl);
}

/* ============================================
   Calculator Main Block
   ============================================ */

.calculator {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: var(--shadow-lg);
}

@media (max-width: 576px) {
  .calculator {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
  }
}

/* ============================================
   Calculator Tabs
   ============================================ */

.calculator__tabs {
  display: flex;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  padding: 4px;
  margin-bottom: var(--spacing-xl);
}

.calculator__tab {
  flex: 1;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.calculator__tab:hover {
  color: var(--color-text);
}

.calculator__tab.is-active {
  background-color: var(--color-bg);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 480px) {
  .calculator__tab {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
}

/* ============================================
   Calculator Form
   ============================================ */

.calculator__form {
  margin-bottom: var(--spacing-xl);
}

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

.calculator__input-wrapper {
  position: relative;
}

.calculator__input {
  padding-right: 60px;
  font-size: var(--font-size-lg);
  font-weight: 500;
}

.calculator__input-suffix {
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  pointer-events: none;
}

/* ============================================
   Rate Selection
   ============================================ */

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

.calculator__rate {
  flex: 1;
  position: relative;
  cursor: pointer;
}

.calculator__rate input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.calculator__rate span {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.calculator__rate:hover span {
  background-color: var(--color-border);
}

.calculator__rate input:checked + span {
  color: var(--color-primary);
  background-color: rgba(37, 99, 235, 0.1);
  border-color: var(--color-primary);
}

.calculator__rate input:focus + span {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

@media (max-width: 480px) {
  .calculator__rates {
    gap: var(--spacing-sm);
  }

  .calculator__rate span {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
}

/* Vertical Rate Selection */
.calculator__rates--vertical {
  flex-direction: column;
}

.calculator__rates--vertical .calculator__rate span {
  justify-content: flex-start;
  text-align: left;
}

/* ============================================
   Calculator Submit
   ============================================ */

.calculator__submit {
  margin-top: var(--spacing-lg);
}

/* ============================================
   Calculator Results
   ============================================ */

.calculator__results {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border-light);
}

.calculator__results-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.calculator__result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.calculator__result-row:not(:last-of-type) {
  border-bottom: 1px solid var(--color-border-light);
}

.calculator__result-row--highlight {
  background-color: rgba(37, 99, 235, 0.05);
  margin: 0 calc(var(--spacing-xl) * -1);
  padding-left: var(--spacing-xl);
  padding-right: var(--spacing-xl);
  border-radius: var(--radius-md);
}

.calculator__result-label {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.calculator__result-value {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

.calculator__result-row--highlight .calculator__result-value {
  color: var(--color-primary);
}

.calculator__copy {
  width: 100%;
  margin-top: var(--spacing-lg);
}

.calculator__copy.is-copied {
  background-color: var(--color-success);
  color: white;
}

@media (max-width: 480px) {
  .calculator__results {
    padding: var(--spacing-lg);
  }

  .calculator__result-row--highlight {
    margin: 0 calc(var(--spacing-lg) * -1);
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
}

/* ============================================
   Content Block (SEO text)
   ============================================ */

.content-block {
  max-width: var(--container-narrow);
  margin: var(--spacing-3xl) auto;
  line-height: var(--line-height-relaxed);
}

.content-block h2 {
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
}

.content-block h3 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xl);
}

.content-block p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

.content-block ul,
.content-block ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.content-block li {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
  list-style: disc;
}

.content-block ol li {
  list-style: decimal;
}

/* Formula Block */
.formula-block {
  background-color: var(--color-bg-secondary);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.formula-block p {
  margin-bottom: 0;
  color: var(--color-text);
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-lg);
}

/* Example Block */
.example-block {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.example-block p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
}

.example-block p:last-child {
  margin-bottom: 0;
}

/* ============================================
   Related Calculators
   ============================================ */

.related-calculators {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.related-calculators h2 {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.related-calculators .calc-grid {
  grid-template-columns: repeat(3, 1fr);
  max-width: 900px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .related-calculators .calc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .related-calculators .calc-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Breadcrumbs Override (for calculator pages)
   ============================================ */

.breadcrumbs {
  margin-bottom: var(--spacing-xl);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0;
  list-style: none;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin-left: var(--spacing-sm);
  color: var(--color-text-muted);
}

.breadcrumbs a {
  color: var(--color-text-secondary);
}

.breadcrumbs a:hover {
  color: var(--color-primary);
}

.breadcrumbs li:last-child {
  color: var(--color-text);
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 768px) {
  .page-header {
    margin-bottom: var(--spacing-2xl);
  }

  .calculator {
    margin-bottom: var(--spacing-2xl);
  }

  .content-block {
    margin: var(--spacing-2xl) auto;
  }

  .content-block h2 {
    font-size: var(--font-size-2xl);
  }

  .content-block h3 {
    font-size: var(--font-size-lg);
  }

  .related-calculators {
    margin-top: var(--spacing-2xl);
  }
}

@media (max-width: 480px) {
  .page-header h1 {
    font-size: var(--font-size-2xl);
  }

  .formula-block p {
    font-size: var(--font-size-base);
    word-break: break-all;
  }
}