/* ==========================================================================
   SZÉRUM.HU — LABORATÓRIUMI MINIMALIZMUS DESIGN SYSTEM
   Palette:
   --sz-primary: #3a3550
   --sz-secondary: #847ea0
   --sz-accent: #b98fd4
   --sz-surface: #f8f7fa
   --sz-ink: #1e1a2c
   ========================================================================== */

:root {
  --sz-primary: #3a3550;
  --sz-secondary: #847ea0;
  --sz-accent: #b98fd4;
  --sz-surface: #f8f7fa;
  --sz-ink: #1e1a2c;
  --sz-white: #ffffff;
  --sz-border: rgba(58, 53, 80, 0.18);
  --sz-border-strong: #3a3550;
  --sz-font-display: 'Kode Mono', monospace;
  --sz-font-body: 'Red Hat Display', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --sz-sidebar-width: 300px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body.sz-site-body {
  background-color: var(--sz-surface);
  color: var(--sz-ink);
  font-family: var(--sz-font-body);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--sz-primary);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover {
  color: var(--sz-accent);
}

img {
  max-width: 100%;
  height: auto;
}

/* Layout Shell (Sidebar TOC + Content Stage) */
.sz-app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

@media (min-width: 960px) {
  .sz-app-layout {
    flex-direction: row;
  }
}

/* Sidebar TOC Column */
.sz-sidebar-panel {
  background-color: #f1eff5;
  border-bottom: 2px solid var(--sz-border-strong);
  padding: 1.75rem 1.5rem;
  width: 100%;
}

@media (min-width: 960px) {
  .sz-sidebar-panel {
    width: var(--sz-sidebar-width);
    flex-shrink: 0;
    border-bottom: none;
    border-right: 2px solid var(--sz-border-strong);
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
  }
}

.sz-brand-box {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--sz-border-strong);
}

.sz-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--sz-ink);
}

.sz-brand-icon {
  font-size: 1.5rem;
}

.sz-brand-title {
  font-family: var(--sz-font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--sz-ink);
}

.sz-brand-tagline {
  display: block;
  font-family: var(--sz-font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--sz-secondary);
  margin-top: 0.25rem;
}

.sz-nav-header {
  font-family: var(--sz-font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--sz-primary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--sz-border);
}

.sz-nav-block, .sz-toc-block {
  margin-bottom: 2rem;
}

.sz-nav-list, .sz-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sz-nav-item, .sz-toc-item {
  margin-bottom: 0.4rem;
}

.sz-nav-link, .sz-toc-link {
  display: flex;
  align-items: baseline;
  font-family: var(--sz-font-display);
  font-size: 0.85rem;
  color: var(--sz-primary);
  padding: 0.2rem 0;
}

.sz-nav-link.is-active, .sz-toc-link.is-active {
  color: var(--sz-ink);
  font-weight: 700;
}

.sz-nav-code, .sz-toc-code {
  font-size: 0.75rem;
  color: var(--sz-secondary);
  margin-right: 0.5rem;
  flex-shrink: 0;
}

.sz-nav-label, .sz-toc-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
}

.sz-nav-leader-dots, .sz-toc-leader-dots {
  flex: 1;
  border-bottom: 1px dotted var(--sz-secondary);
  margin: 0 0.4rem;
  opacity: 0.6;
  position: relative;
  top: -3px;
}

.sz-sidebar-info-box {
  margin-top: auto;
  padding: 1rem;
  background-color: var(--sz-white);
  border: 1px solid var(--sz-border-strong);
  font-size: 0.8rem;
}

.sz-info-badge {
  display: inline-block;
  font-family: var(--sz-font-display);
  font-size: 0.65rem;
  font-weight: 700;
  background-color: var(--sz-primary);
  color: var(--sz-white);
  padding: 0.15rem 0.4rem;
  margin-bottom: 0.5rem;
}

.sz-info-text {
  color: var(--sz-primary);
  line-height: 1.4;
}

/* Content Stage & Main */
.sz-content-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.sz-main-content {
  flex: 1;
  padding: 2rem 1.25rem;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .sz-main-content {
    padding: 3rem 2.5rem;
  }
}

/* --------------------------------------------------------------------------
   QUIET OPENING HEADER SYSTEM
   -------------------------------------------------------------------------- */
.sz-quiet-header-block, .sz-list-intro-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
}

.sz-header-kicker {
  font-family: var(--sz-font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--sz-secondary);
  margin-bottom: 0.5rem;
}

.sz-header-title, .sz-list-title {
  font-family: var(--sz-font-display);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--sz-ink);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .sz-header-title, .sz-list-title {
    font-size: 2.1rem;
  }
}

.sz-divider-line {
  height: 2px;
  background-color: var(--sz-border-strong);
  margin: 1.25rem 0;
}

.sz-intro-body, .sz-list-lead-text {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--sz-primary);
}

/* LIST RULE FOR BOTH HOMEPAGE INTRO AND ARTICLE PROSE */
.sz-intro-body ul, .sz-intro-body ol,
.sz-article-prose ul, .sz-article-prose ol {
  padding-left: 1.5rem !important;
  margin-top: 1rem !important;
  margin-bottom: 1rem !important;
  list-style-position: outside !important;
}

.sz-intro-body ul, .sz-article-prose ul {
  list-style-type: disc !important;
}

.sz-intro-body ol, .sz-article-prose ol {
  list-style-type: decimal !important;
}

.sz-intro-body li, .sz-article-prose li {
  margin-bottom: 0.5rem;
  line-height: 1.65;
  color: var(--sz-ink);
}

/* --------------------------------------------------------------------------
   SECTION PITCH MODULES BLOCK
   -------------------------------------------------------------------------- */
.sz-pitch-modules-block {
  margin-bottom: 3.5rem;
}

.sz-block-heading {
  font-family: var(--sz-font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--sz-primary);
  margin-bottom: 1.5rem;
}

.sz-heading-num {
  color: var(--sz-accent);
  background-color: var(--sz-primary);
  padding: 0.1rem 0.4rem;
  margin-right: 0.4rem;
}

.sz-pitch-row {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 768px) {
  .sz-pitch-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

.sz-pitch-panel {
  background-color: var(--sz-white);
  border: 1px solid var(--sz-border-strong);
  padding: 1.25rem;
  position: relative;
}

.sz-pitch-code-badge {
  font-family: var(--sz-font-display);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--sz-secondary);
  margin-bottom: 0.5rem;
}

.sz-pitch-title {
  font-family: var(--sz-font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--sz-ink);
  margin-bottom: 0.5rem;
}

.sz-pitch-text {
  font-size: 0.9rem;
  color: var(--sz-primary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   TIMELINE ARTICLE PRESENTATION SYSTEM
   -------------------------------------------------------------------------- */
.sz-stream-block {
  margin-bottom: 3.5rem;
}

.sz-stream-header {
  margin-bottom: 2rem;
}

.sz-stream-subtitle {
  font-size: 0.95rem;
  color: var(--sz-secondary);
  margin-top: -0.75rem;
  margin-bottom: 1.5rem;
}

.sz-timeline-stream {
  position: relative;
  padding: 1rem 0;
}

/* Continuous Vertical Rule */
.sz-vertical-guideline {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background-color: var(--sz-border-strong);
  z-index: 1;
}

@media (min-width: 768px) {
  .sz-vertical-guideline {
    left: 50%;
    transform: translateX(-50%);
  }
}

.sz-timeline-node-item {
  position: relative;
  margin-bottom: 2.5rem;
  z-index: 2;
}

/* Mobile Timeline Layout */
@media (max-width: 767px) {
  .sz-timeline-node-item {
    padding-left: 45px;
  }

  .sz-node-anchor {
    position: absolute;
    left: 14px;
    top: 6px;
    width: 14px;
    height: 14px;
    background-color: var(--sz-surface);
    border: 2px solid var(--sz-border-strong);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .sz-node-dot {
    width: 6px;
    height: 6px;
    background-color: var(--sz-accent);
    border-radius: 50%;
  }

  .sz-node-date-stamp {
    font-family: var(--sz-font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--sz-secondary);
    margin-bottom: 0.4rem;
  }
}

/* Desktop Alternating Timeline Layout */
@media (min-width: 768px) {
  .sz-timeline-node-item {
    display: flex;
    align-items: flex-start;
    width: 100%;
  }

  .sz-node-anchor {
    position: absolute;
    left: 50%;
    top: 14px;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background-color: var(--sz-surface);
    border: 2px solid var(--sz-border-strong);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
  }

  .sz-node-dot {
    width: 6px;
    height: 6px;
    background-color: var(--sz-accent);
    border-radius: 50%;
  }

  .sz-node-left {
    flex-direction: row-reverse;
  }

  .sz-node-right {
    flex-direction: row;
  }

  .sz-node-card-body {
    width: 44%;
  }

  .sz-node-date-stamp {
    width: 44%;
    padding: 1rem;
    font-family: var(--sz-font-display);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--sz-secondary);
  }

  .sz-node-left .sz-node-date-stamp {
    text-align: left;
  }

  .sz-node-right .sz-node-date-stamp {
    text-align: right;
  }
}

.sz-node-card-body {
  background-color: var(--sz-white);
  border: 1px solid var(--sz-border-strong);
  padding: 1.25rem 1.5rem;
}

.sz-node-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--sz-font-display);
  font-size: 0.72rem;
  color: var(--sz-secondary);
  margin-bottom: 0.5rem;
  border-bottom: 1px dashed var(--sz-border);
  padding-bottom: 0.4rem;
}

.sz-node-code {
  font-weight: 700;
  color: var(--sz-primary);
}

.sz-node-heading {
  font-family: var(--sz-font-display);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.6rem;
}

.sz-node-link {
  color: var(--sz-ink);
}

.sz-node-link:hover {
  color: var(--sz-accent);
}

.sz-node-summary {
  font-size: 0.92rem;
  color: var(--sz-primary);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   SINGLE ARTICLE & PAGE LAYOUT
   -------------------------------------------------------------------------- */
.sz-article-view {
  margin-bottom: 3rem;
}

.sz-article-header {
  margin-bottom: 2rem;
}

.sz-article-meta-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sz-font-display);
  font-size: 0.75rem;
  color: var(--sz-secondary);
  margin-bottom: 0.75rem;
}

.sz-meta-category {
  font-weight: 700;
  color: var(--sz-primary);
}

.sz-article-main-title {
  font-family: var(--sz-font-display);
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--sz-ink);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .sz-article-main-title {
    font-size: 2.4rem;
  }
}

.sz-article-deck {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--sz-primary);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.sz-tech-data-panel {
  background-color: var(--sz-white);
  border: 1px solid var(--sz-border-strong);
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}

.sz-data-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  font-family: var(--sz-font-display);
  font-size: 0.75rem;
}

.sz-data-cell {
  display: flex;
  gap: 0.5rem;
}

.sz-data-fullwidth {
  width: 100%;
}

.sz-data-key {
  color: var(--sz-secondary);
  font-weight: 600;
}

.sz-data-val {
  color: var(--sz-ink);
  font-weight: 700;
}

/* Article Prose Typography */
.sz-article-prose {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--sz-ink);
}

.sz-article-prose p {
  margin-bottom: 1.5rem;
}

.sz-article-prose h2 {
  font-family: var(--sz-font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--sz-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--sz-border-strong);
}

.sz-article-prose h3 {
  font-family: var(--sz-font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--sz-ink);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.sz-article-prose blockquote {
  background-color: var(--sz-white);
  border-left: 4px solid var(--sz-accent);
  border-top: 1px solid var(--sz-border);
  border-right: 1px solid var(--sz-border);
  border-bottom: 1px solid var(--sz-border);
  padding: 1.25rem;
  margin: 1.75rem 0;
  font-style: italic;
}

.sz-article-prose blockquote p:last-child {
  margin-bottom: 0;
}

.sz-article-prose strong {
  color: var(--sz-primary);
  font-weight: 600;
}

.sz-article-prose code {
  font-family: var(--sz-font-display);
  font-size: 0.85em;
  background-color: #eae7f2;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--sz-border);
}

/* Callout Box inside Prose */
.sz-warning-callout {
  background-color: #f7edee;
  border: 2px solid #b33939;
  padding: 1.25rem;
  margin: 2rem 0;
}

.sz-warning-title {
  font-family: var(--sz-font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: #b33939;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

/* Post Footer Cross-links */
.sz-article-post-footer {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 2px solid var(--sz-border-strong);
}

.sz-crosslink-box {
  background-color: var(--sz-white);
  border: 1px solid var(--sz-border-strong);
  padding: 1.5rem;
}

.sz-crosslink-title {
  font-family: var(--sz-font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--sz-primary);
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--sz-border);
  padding-bottom: 0.4rem;
}

.sz-crosslink-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
}

.sz-crosslink-list li {
  margin-bottom: 0.5rem;
}

.sz-crosslink-item {
  font-size: 0.95rem;
  color: var(--sz-primary);
}

.sz-crosslink-bullet {
  color: var(--sz-accent);
  font-family: var(--sz-font-display);
  margin-right: 0.4rem;
}

.sz-pillar-callout {
  background-color: var(--sz-surface);
  border: 1px solid var(--sz-border-strong);
  padding: 1rem 1.25rem;
}

.sz-callout-code {
  font-family: var(--sz-font-display);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--sz-secondary);
  display: block;
  margin-bottom: 0.25rem;
}

.sz-callout-text {
  font-size: 0.9rem;
  color: var(--sz-ink);
  margin-bottom: 0.5rem;
}

.sz-callout-link {
  font-family: var(--sz-font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--sz-primary);
}

/* --------------------------------------------------------------------------
   SITE FOOTER
   -------------------------------------------------------------------------- */
.sz-site-footer {
  background-color: var(--sz-ink);
  color: #cfcbdd;
  padding: 3rem 1.25rem 2rem;
  margin-top: auto;
  border-top: 3px solid var(--sz-accent);
}

@media (min-width: 768px) {
  .sz-site-footer {
    padding: 3.5rem 2.5rem 2rem;
  }
}

.sz-footer-inner {
  max-width: 960px;
  margin: 0 auto 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 768px) {
  .sz-footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.sz-footer-col-brand {
  max-width: 400px;
}

.sz-footer-logo {
  font-family: var(--sz-font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--sz-white);
  display: block;
  margin-bottom: 0.75rem;
}

.sz-footer-tagline {
  font-size: 0.88rem;
  line-height: 1.6;
  color: #a8a2bf;
}

.sz-footer-heading {
  font-family: var(--sz-font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--sz-accent);
  display: block;
  margin-bottom: 1rem;
}

.sz-footer-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sz-footer-menu li {
  margin-bottom: 0.5rem;
}

.sz-footer-menu a {
  color: #cfcbdd;
  font-size: 0.9rem;
}

.sz-footer-menu a:hover {
  color: var(--sz-white);
}

.sz-footer-bar {
  max-width: 960px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.78rem;
  color: #8f88a8;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sz-disclaimer-notice {
  line-height: 1.5;
}

.sz-copyright {
  font-family: var(--sz-font-display);
}