/* ============================================================
   NALOGER.RU — Pages Stylesheet (pages.css)
   Подключается на: article.html, calculator.html, category.html
   Структура:
   1.  Reading Progress Bar
   2.  Article Page Layout
   3.  Article Header & Meta
   4.  Summary Box ("Кратко")
   5.  Table of Contents
   6.  Article Body Typography
   7.  Article Tables
   8.  Article Note Boxes
   9.  Article CTA
   10. Article FAQ
   11. Article Related
   12. Sidebar Widgets
   13. Calculator Page Layout
   14. Calculator Form
   15. Calculator Result
   16. Category Page Header
   17. Category Page Layout
   18. Tag Filter
   19. Pagination
   20. Responsive Overrides
   ============================================================ */


/* ============================================================
   1. READING PROGRESS BAR
   ============================================================ */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-success));
  z-index: 200;
  transition: width 80ms linear;
  pointer-events: none;
}


/* ============================================================
   2. ARTICLE PAGE LAYOUT
   ============================================================ */
.article-wrapper {
  padding-bottom: var(--space-16);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-12);
  align-items: start;
  padding-top: var(--space-2);
  padding-bottom: var(--space-16);
}

.article-main {
  min-width: 0; /* prevent overflow */
}

.article-sidebar {
  position: sticky;
  top: calc(var(--header-h) + var(--space-6));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}


/* ============================================================
   3. ARTICLE HEADER & META
   ============================================================ */
.article-header {
  margin-bottom: var(--space-6);
}

.article-header__top {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.article-updated {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  background: var(--color-bg);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}

.article-title {
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.article-meta__item {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.article-meta__sep {
  color: var(--color-border);
  user-select: none;
}

.article-meta__author {
  font-weight: 500;
  color: var(--color-text-muted);
}


/* ============================================================
   4. SUMMARY BOX ("Кратко о главном")
   ============================================================ */
.summary-box {
  background: var(--color-bg-light);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-5) var(--space-6);
  margin: var(--space-6) 0 var(--space-8);
}

.summary-box__title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.summary-box__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
}

.summary-box__list li {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: var(--leading-normal);
  padding-left: var(--space-5);
  position: relative;
}

.summary-box__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
  font-size: 13px;
}


/* ============================================================
   5. TABLE OF CONTENTS
   ============================================================ */
.toc {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.toc__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  user-select: none;
}

.toc__heading {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.toc__toggle-icon {
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.toc--open .toc__toggle-icon {
  transform: rotate(180deg);
}

.toc__body {
  padding: var(--space-1) var(--space-2) var(--space-3);
  border-top: 1px solid var(--color-border);
}

.toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc-counter;
}

.toc__list li {
  counter-increment: toc-counter;
}

.toc__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  line-height: var(--leading-snug);
}

.toc__link::before {
  content: counter(toc-counter) ".";
  font-size: 12px;
  color: var(--color-text-light);
  flex-shrink: 0;
  min-width: 18px;
  font-weight: 500;
}

.toc__link:hover,
.toc__link--active {
  background: var(--color-bg-light);
  color: var(--color-accent);
}

/* Desktop TOC (in sidebar) — always open */
.toc--desktop .toc__body {
  border-top: none;
  padding-top: var(--space-2);
}

.toc--desktop .toc__header {
  cursor: default;
  padding-bottom: 0;
}

/* Mobile TOC — collapsible */
.toc--mobile {
  margin: 0 0 var(--space-6);
}

.toc--mobile .toc__body {
  display: none;
}

.toc--mobile.toc--open .toc__body {
  display: block;
}


/* ============================================================
   6. ARTICLE BODY TYPOGRAPHY
   ============================================================ */
.article-body {
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
  max-width: 720px;
}

.article-body > * + * {
  margin-top: var(--space-5);
}

.article-body h2 {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-light);
  line-height: var(--leading-snug);
  letter-spacing: -0.3px;
  scroll-margin-top: calc(var(--header-h) + var(--space-6));
}

.article-body h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.article-body h3 {
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--color-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  scroll-margin-top: calc(var(--header-h) + var(--space-6));
}

.article-body p {
  margin-top: 0;
  margin-bottom: var(--space-5);
}

.article-body p:last-child {
  margin-bottom: 0;
}

.article-body ul,
.article-body ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-5);
}

.article-body ul {
  list-style: none;
  padding-left: 0;
}

.article-body ul li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  line-height: var(--leading-relaxed);
}

.article-body ul li::before {
  content: '';
  position: absolute;
  left: var(--space-2);
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.article-body ol {
  list-style: none;
  counter-reset: ol-counter;
  padding-left: 0;
}

.article-body ol li {
  counter-increment: ol-counter;
  position: relative;
  padding-left: 36px;
  margin-bottom: var(--space-3);
  line-height: var(--leading-relaxed);
}

.article-body ol li::before {
  content: counter(ol-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 26px;
  height: 26px;
  background: var(--color-accent);
  color: white;
  font-size: 12px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-body strong {
  font-weight: 700;
  color: var(--color-text);
}

.article-body em {
  font-style: italic;
}

.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: var(--color-accent-dark);
  text-decoration: none;
}

/* Stat highlight / pull quote */
.article-body .stat-highlight {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-8) 0;
}

.stat-highlight__number {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  white-space: nowrap;
}

.stat-highlight__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}


/* ============================================================
   7. ARTICLE TABLES
   ============================================================ */
.article-table {
  overflow-x: auto;
  margin: var(--space-6) 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  /* gradient hint for horizontal scroll on mobile */
  background:
    linear-gradient(to right, white 30%, rgba(255,255,255,0)),
    linear-gradient(to right, rgba(255,255,255,0), white 70%) 100% 0,
    linear-gradient(to right, rgba(0,0,0,0.06) 0%, transparent),
    linear-gradient(to left, rgba(0,0,0,0.06) 0%, transparent) 100% 0;
  background-repeat: no-repeat;
  background-size: 40px 100%, 40px 100%, 12px 100%, 12px 100%;
  background-attachment: local, local, scroll, scroll;
}

.article-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  white-space: nowrap;
}

.article-table thead th {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 600;
  padding: var(--space-3) var(--space-5);
  text-align: left;
  font-size: var(--text-sm);
}

.article-table thead th:last-child {
  text-align: right;
}

.article-table tbody tr:nth-child(even) td {
  background: var(--color-bg);
}

.article-table tbody td {
  padding: var(--space-3) var(--space-5);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
}

.article-table tbody td:last-child {
  text-align: right;
  font-weight: 600;
}

.article-table tbody tr:last-child td {
  border-bottom: none;
}

/* Highlighted row */
.article-table tbody tr.table-row--accent td {
  background: var(--color-bg-light);
  border-left: 3px solid var(--color-success);
  font-weight: 600;
  color: var(--color-primary);
}


/* ============================================================
   8. ARTICLE NOTE BOXES
   ============================================================ */
.article-note {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-5);
  border-radius: var(--radius-md);
  margin: var(--space-6) 0;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.article-note__icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 1px;
}

.article-note__body { flex: 1; }
.article-note__title {
  font-weight: 700;
  margin-bottom: var(--space-1);
  font-size: var(--text-sm);
}

.article-note--warning {
  background: #FFF8E7;
  border-left: 4px solid var(--color-warning);
}
.article-note--warning .article-note__title { color: #92601A; }
.article-note--warning .article-note__body { color: #7A5A1E; }

.article-note--info {
  background: var(--color-bg-light);
  border-left: 4px solid var(--color-accent);
}
.article-note--info .article-note__title { color: var(--color-primary); }
.article-note--info .article-note__body { color: var(--color-text-muted); }

.article-note--success {
  background: var(--color-cat-green-bg);
  border-left: 4px solid var(--color-success);
}
.article-note--success .article-note__title { color: #006B55; }
.article-note--success .article-note__body { color: #00574A; }


/* ============================================================
   9. ARTICLE CTA
   ============================================================ */
.article-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1e4d7b 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-8);
  margin: var(--space-10) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.article-cta__text h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-inverse);
  margin-bottom: var(--space-2);
}

.article-cta__text p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
}

.article-cta__btn { flex-shrink: 0; }

@media (max-width: 640px) {
  .article-cta {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-6);
  }
  .article-cta__btn { width: 100%; justify-content: center; }
}


/* ============================================================
   10. ARTICLE FAQ
   ============================================================ */
.article-faq {
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-light);
}

.article-faq h2 {
  font-size: clamp(20px, 2.5vw, 28px);
  margin-bottom: var(--space-6);
}


/* ============================================================
   11. ARTICLE RELATED (full-width below article)
   ============================================================ */
.related-section {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border-light);
  padding: var(--space-12) 0;
}

.related-section .section__head {
  margin-bottom: var(--space-6);
}


/* ============================================================
   12. SIDEBAR WIDGETS
   ============================================================ */
.widget {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.widget__header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-light);
}

.widget__title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0;
}

.widget__body {
  padding: var(--space-4) var(--space-5);
}

/* Widget: mini article list */
.widget-articles {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.widget-article {
  border-bottom: 1px solid var(--color-border-light);
}

.widget-article:last-child { border-bottom: none; }

.widget-article a {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  line-height: var(--leading-snug);
  transition: color var(--transition-fast);
}

.widget-article a:hover { color: var(--color-accent); }

.widget-article__meta {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  margin-top: 2px;
}

/* Widget: CTA */
.widget-cta {
  background: var(--color-bg-light);
  border-color: rgba(46, 124, 246, 0.20);
  padding: var(--space-5);
}

.widget-cta p {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: var(--leading-snug);
}

.widget-cta .btn { width: 100%; justify-content: center; }

/* Widget: categories list */
.widget-cats {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.widget-cats li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.widget-cats li a:hover {
  background: var(--color-bg);
  color: var(--color-accent);
}

.widget-cats__count {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  background: var(--color-bg);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}


/* ============================================================
   13. CALCULATOR PAGE LAYOUT
   ============================================================ */
.calc-page {
  padding-bottom: var(--space-16);
}

.calc-page-header {
  padding: var(--space-8) 0 var(--space-4);
}

.calc-page-title {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.5px;
}

.calc-page-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: var(--leading-relaxed);
}

.calc-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-8);
  align-items: start;
}

.calc-layout--single {
  grid-template-columns: minmax(0, 920px);
  justify-content: center;
}

.calc-main { min-width: 0; }

.calc-seo-container {
  margin-top: var(--space-10);
}

.calc-guide {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.calc-guide__title {
  margin-bottom: var(--space-3);
  font-size: clamp(22px, 3vw, 30px);
}

.calc-guide__lead {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.calc-guide__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.calc-guide__card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  padding: var(--space-5);
}

.calc-guide__card h3 {
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
}

.calc-guide__card p {
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.calc-guide__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.calc-guide__list li {
  position: relative;
  padding-left: var(--space-5);
  color: var(--color-text);
}

.calc-guide__list li::before {
  content: '';
  position: absolute;
  left: var(--space-1);
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.calc-seo-container .seo-text,
.calc-seo-container .article-faq {
  max-width: 100%;
  overflow-wrap: anywhere;
}

.calc-seo-container .seo-text table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
}

.calc-seo-container .seo-text th,
.calc-seo-container .seo-text td {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.calc-seo-container .faq-item__question {
  white-space: normal;
  text-align: left;
}

.calc-sidebar {
  position: sticky;
  top: calc(var(--header-h) + var(--space-6));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}


/* ============================================================
   14. CALCULATOR FORM
   ============================================================ */
.calc-panel {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-6);
}

.calc-panel__header {
  background: var(--color-primary);
  padding: var(--space-5) var(--space-6);
}

.calc-panel__title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-inverse);
  margin: 0;
}

.calc-panel__body {
  padding: var(--space-6);
}

.calc-form__group {
  margin-bottom: var(--space-5);
}

.calc-form__group:last-child { margin-bottom: 0; }

.calc-form__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.calc-form__sublabel {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-light);
  font-weight: 400;
  margin-top: 2px;
}

.calc-form__input,
.calc-form__select {
  width: 100%;
  height: 48px;
  padding: 0 var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
}

.calc-form__input:focus,
.calc-form__select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.12);
  background: var(--color-bg-white);
}

.calc-form__input::placeholder {
  color: var(--color-text-light);
}

.calc-form__select-wrap {
  position: relative;
}

.calc-form__select-wrap::after {
  content: '';
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-top-color: var(--color-text-muted);
  pointer-events: none;
}

.calc-form__input-wrap {
  position: relative;
}

.calc-form__input-suffix {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  pointer-events: none;
}

.calc-form__input--with-suffix {
  padding-right: 40px;
}

/* Radio group */
.calc-form__radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.calc-form__radio-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.calc-form__radio-label:hover {
  border-color: var(--color-accent);
  background: var(--color-bg-light);
}

.calc-form__radio-label input[type="radio"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-accent);
  flex-shrink: 0;
  cursor: pointer;
}

.calc-form__radio-label input[type="radio"]:checked + .calc-form__radio-text {
  color: var(--color-accent);
}

.calc-form__radio-label:has(input:checked) {
  border-color: var(--color-accent);
  background: var(--color-bg-light);
}

.calc-form__radio-text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  line-height: var(--leading-snug);
}

.calc-form__radio-desc {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-light);
  font-weight: 400;
  margin-top: 2px;
}

.calc-form__hint {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  margin-top: var(--space-2);
  line-height: var(--leading-normal);
}

.calc-form__divider {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin: var(--space-6) 0;
}

.calc-submit-btn {
  width: 100%;
  height: 52px;
  font-size: var(--text-base);
  justify-content: center;
  border-radius: var(--radius-sm);
}


/* ============================================================
   15. CALCULATOR RESULT
   ============================================================ */
.calc-result {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-8);
  margin-bottom: var(--space-6);
}

.calc-result__label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: var(--space-2);
}

.calc-result__amount {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 700;
  color: var(--color-success);
  line-height: 1;
  letter-spacing: -1px;
  margin-bottom: var(--space-3);
}

.calc-result__method {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.70);
  margin-bottom: var(--space-6);
}

/* Breakdown steps */
.calc-result__breakdown {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.breakdown-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--text-sm);
}

.breakdown-row span {
  color: rgba(255, 255, 255, 0.65);
}

.breakdown-row strong {
  color: var(--color-text-inverse);
  font-weight: 600;
  white-space: nowrap;
}

.breakdown-row--total {
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: var(--space-1);
}

.breakdown-row--total span,
.breakdown-row--total strong {
  font-weight: 700;
  color: var(--color-text-inverse);
}

.breakdown-row--tax strong {
  color: var(--color-success);
  font-size: var(--text-base);
}

/* Result placeholder (empty state) */
.calc-result--empty {
  background: var(--color-bg);
  border: 2px dashed var(--color-border);
  text-align: center;
  padding: var(--space-10);
}

.calc-result--empty .calc-result__placeholder-icon {
  font-size: 40px;
  margin-bottom: var(--space-4);
}

.calc-result--empty .calc-result__placeholder-text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
}

/* Explanation block */
.calc-explanation {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.calc-explanation h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.calc-explanation p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}

.calc-explanation p:last-child { margin-bottom: 0; }


/* ============================================================
   16. CATEGORY PAGE HEADER
   ============================================================ */
.cat-header {
  padding: var(--space-10) 0 var(--space-8);
  border-bottom: 1px solid var(--color-border-light);
  background: var(--color-bg-white);
}

.cat-header__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-8);
}

.cat-header__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}

.cat-header__icon svg {
  width: 28px;
  height: 28px;
}

.cat-header__title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.5px;
}

.cat-header__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 640px;
  line-height: var(--leading-relaxed);
}

.cat-header__stats {
  display: flex;
  gap: var(--space-6);
  flex-shrink: 0;
}

.cat-stat {
  text-align: center;
}

.cat-stat__num {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.cat-stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}


/* ============================================================
   17. CATEGORY PAGE LAYOUT
   ============================================================ */
.cat-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-10);
  align-items: start;
  padding: var(--space-8) 0 var(--space-16);
}

.cat-sidebar {
  position: sticky;
  top: calc(var(--header-h) + var(--space-6));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.cat-articles-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.cat-articles-count {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.cat-articles-sort {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.cat-articles-sort select {
  font-size: var(--text-sm);
  padding: 6px 28px 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-white);
  color: var(--color-text);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7A8D' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.cat-articles-sort select:focus {
  outline: none;
  border-color: var(--color-accent);
}

/* Category articles grid */
.cat-articles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}


/* ============================================================
   18. TAG FILTER
   ============================================================ */
.tag-filter {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

.tag-filter__btn {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-bg-white);
  cursor: pointer;
  transition: border-color var(--transition-fast),
              color var(--transition-fast),
              background var(--transition-fast);
  white-space: nowrap;
}

.tag-filter__btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-bg-light);
}

.tag-filter__btn--active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.tag-filter__btn--active:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-text-inverse);
}


/* ============================================================
   19. PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-8) 0;
}

.pagination__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-bg-white);
  text-decoration: none;
  transition: border-color var(--transition-fast),
              color var(--transition-fast),
              background var(--transition-fast);
}

.pagination__btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-bg-light);
}

.pagination__btn--active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-inverse);
  font-weight: 700;
}

.pagination__btn--active:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-text-inverse);
}

.pagination__btn--arrow {
  font-size: 18px;
}

.pagination__ellipsis {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: var(--text-sm);
  pointer-events: none;
}


/* ============================================================
   20. SITEMAP PAGE
   ============================================================ */
.sitemap-page {
  padding-bottom: var(--space-16);
}

.sitemap-hero {
  padding: var(--space-10) 0 var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
}

.sitemap-title {
  margin-top: var(--space-4);
  margin-bottom: var(--space-3);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.4px;
}

.sitemap-subtitle {
  max-width: 760px;
  color: var(--color-text-muted);
}

.sitemap-xml-link {
  margin-top: var(--space-4);
}

.sitemap-xml-link a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.sitemap-content {
  padding-top: var(--space-8);
}

.sitemap-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  align-items: start;
}

.sitemap-side {
  display: grid;
  gap: var(--space-5);
}

.sitemap-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.sitemap-card h2 {
  margin-bottom: var(--space-4);
  font-size: var(--text-lg);
}

.sitemap-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sitemap-list li + li {
  margin-top: var(--space-2);
}

.sitemap-list a,
.sitemap-tree a {
  color: var(--color-text);
  text-decoration: none;
}

.sitemap-list a:hover,
.sitemap-tree a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.sitemap-tree,
.sitemap-tree ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sitemap-tree {
  display: grid;
  gap: var(--space-3);
}

.sitemap-tree__item {
  padding-left: var(--space-4);
  border-left: 2px solid var(--color-border-light);
}

.sitemap-tree__section > a {
  font-weight: 600;
}

.sitemap-tree__articles,
.sitemap-tree__children {
  margin-top: var(--space-2);
  display: grid;
  gap: 6px;
}

.sitemap-tree__articles a {
  color: var(--color-text-muted);
}


/* ============================================================
   21. SEARCH PAGE
   ============================================================ */
.search-page {
  padding-bottom: var(--space-16);
}

.search-head {
  padding: var(--space-10) 0 var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
}

.search-title {
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
  font-size: clamp(28px, 4vw, 40px);
}

.search-form-page {
  display: flex;
  gap: var(--space-3);
  max-width: 760px;
}

.search-form-page input {
  flex: 1;
  min-width: 0;
  height: 46px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 var(--space-4);
  font-size: var(--text-base);
}

.search-form-page input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.12);
}

.search-meta {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
}

.search-results-wrap {
  padding-top: var(--space-8);
}

.search-results {
  display: grid;
  gap: var(--space-4);
}

.search-item {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.search-item__title {
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: var(--leading-snug);
}

.search-item__title a {
  color: var(--color-text);
  text-decoration: none;
}

.search-item__title a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.search-item__meta {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-light);
}

.search-item__excerpt {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
}

.search-empty {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  color: var(--color-text-muted);
}

.search-more-wrap {
  margin-top: var(--space-6);
  text-align: center;
}

/* ============================================================
   22. QUESTION PAGE
   ============================================================ */
.question-page {
  padding-bottom: var(--space-16);
}

.question-hero {
  padding: var(--space-10) 0 var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
}

.question-title {
  margin-top: var(--space-4);
  margin-bottom: var(--space-3);
  font-size: clamp(28px, 4vw, 40px);
}

.question-subtitle {
  max-width: 760px;
  color: var(--color-text-muted);
}

.question-content {
  padding-top: var(--space-8);
}

.question-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  align-items: start;
}

.question-side {
  display: grid;
  gap: var(--space-5);
}

.question-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.question-card h2 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.question-form {
  display: grid;
  gap: var(--space-4);
}

.question-field {
  display: grid;
  gap: 8px;
}

.question-field > span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.question-field input,
.question-field select,
.question-field textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: var(--text-base);
  font-family: inherit;
}

.question-field textarea {
  resize: vertical;
  min-height: 150px;
}

.question-field input:focus,
.question-field select:focus,
.question-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.12);
}

.question-error {
  color: #b42318;
  font-size: var(--text-xs);
}

.question-alert {
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-5);
  border: 1px solid transparent;
}

.question-alert--success {
  background: #edfdf3;
  border-color: #a6f4c5;
  color: #067647;
}

.question-list {
  margin: 0;
  padding-left: 18px;
  color: var(--color-text-muted);
  display: grid;
  gap: var(--space-2);
}

.question-seo {
  padding-top: var(--space-8);
}

.question-search {
  padding-top: var(--space-8);
}

.question-search__form {
  display: flex;
  gap: var(--space-3);
}

.question-search__form input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: var(--text-base);
}

.question-search__list {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.question-search__item {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: linear-gradient(180deg, #fff, #fcfdff);
}

.question-search__text {
  margin: 0;
  color: var(--color-text);
  line-height: var(--leading-normal);
}

.question-search__qa + .question-search__qa {
  margin-top: var(--space-3);
}

.question-search__label {
  margin: 0 0 6px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-light);
  font-weight: 600;
}

.question-search__text--question {
  font-weight: 600;
}

.question-search__text--answer {
  color: var(--color-text-muted);
}

.question-search__meta {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  display: flex;
  gap: 8px;
  align-items: center;
}

.question-search__section {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px dashed rgba(46, 124, 246, 0.4);
}

.question-search__section:hover {
  color: var(--color-accent-hover);
  border-bottom-color: rgba(36, 99, 201, 0.55);
}

.question-search__empty {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
}

.question-search__count {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.question-search__more {
  margin-top: var(--space-4);
  text-align: center;
}

.question-search__pagination {
  padding-top: var(--space-5);
  padding-bottom: 0;
}

.question-seo__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}


/* ============================================================
   23. RESPONSIVE OVERRIDES
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr 280px;
    gap: var(--space-8);
  }

  .calc-layout {
    grid-template-columns: 1fr 260px;
  }

  .calc-layout--single {
    grid-template-columns: minmax(0, 920px);
  }

  .cat-layout {
    grid-template-columns: 1fr 260px;
  }

  .sitemap-grid {
    grid-template-columns: 1fr 280px;
  }

  .question-grid {
    grid-template-columns: 1fr 280px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  /* Article */
  .article-layout {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    padding-bottom: var(--space-10);
  }

  .article-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }

  .article-body {
    font-size: var(--text-base);
  }

  .toc--desktop { display: none; }
  .toc--mobile  { display: block; }

  .article-cta {
    padding: var(--space-5) var(--space-5);
  }

  /* Calculator */
  .calc-layout {
    grid-template-columns: 1fr;
  }

  .calc-guide {
    padding: var(--space-6);
  }

  .calc-guide__grid {
    grid-template-columns: 1fr;
  }

  .calc-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }

  /* Category */
  .cat-layout {
    grid-template-columns: 1fr;
    padding-top: var(--space-6);
  }

  .cat-sidebar {
    position: static;
    order: -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }

  .cat-articles-grid {
    grid-template-columns: 1fr;
  }

  .cat-header__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-5);
  }

  .cat-header__stats {
    gap: var(--space-5);
  }

  .sitemap-grid {
    grid-template-columns: 1fr;
  }

  .question-grid,
  .question-seo__grid {
    grid-template-columns: 1fr;
  }

  .question-search__form {
    flex-direction: column;
  }

  .question-search__form .btn {
    width: 100%;
    justify-content: center;
  }

  .search-form-page {
    flex-direction: column;
  }

  .search-form-page .btn {
    width: 100%;
    justify-content: center;
  }

  /* Progress bar slightly thicker on mobile for visibility */
  .progress-bar { height: 4px; }
}

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

  .cat-articles-grid {
    grid-template-columns: 1fr;
  }

  .pagination__btn { width: 36px; height: 36px; }
}