/* ==========================================================================
   RUS9N.COM — MATERIAL DESIGN 3: EXPRESSIVE DESIGN SYSTEM
   Official Specification Reference: https://m3.material.io/
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & Color Schemes
   -------------------------------------------------------------------------- */
:root,
[data-theme="light"] {
  /* Typography */
  --font-sans: "Roboto Flex", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Roboto Flex", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Roboto Mono", ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;

  /* Layout Boundaries */
  --max-width: 1140px;
  --header-height: 68px;
  --page-padding-x: clamp(1.25rem, 5vw, 3.5rem);

  /* M3 Expressive Shape Scale */
  --md-shape-xs: 4px;
  --md-shape-sm: 8px;
  --md-shape-md: 12px;
  --md-shape-lg: 16px;
  --md-shape-xl: 20px;
  --md-shape-2xl: 28px;
  --md-shape-3xl: 36px;
  --md-shape-full: 9999px;

  /* Legacy shape aliases */
  --radius-sm: var(--md-shape-sm);
  --radius-md: var(--md-shape-lg);
  --radius-lg: var(--md-shape-2xl);
  --radius-full: var(--md-shape-full);

  /* M3 Expressive Motion Physics */
  --md-motion-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
  --md-motion-standard: cubic-bezier(0.2, 0, 0, 1);
  --transition-fast: 150ms var(--md-motion-standard);
  --transition-normal: 280ms var(--md-motion-spring);

  /* M3 Expressive Elevation Levels */
  --md-elevation-0: none;
  --md-elevation-1: 0 1px 3px 1px rgba(0, 0, 0, 0.06), 0 1px 2px 0 rgba(0, 0, 0, 0.08);
  --md-elevation-2: 0 2px 6px 2px rgba(0, 0, 0, 0.07), 0 1px 2px 0 rgba(0, 0, 0, 0.08);
  --md-elevation-3: 0 4px 12px 3px rgba(0, 0, 0, 0.08), 0 1px 3px 0 rgba(0, 0, 0, 0.09);

  --shadow-sm: var(--md-elevation-1);
  --shadow-md: var(--md-elevation-2);
  --shadow-lg: var(--md-elevation-3);

  /* Light Theme Color Roles */
  --md-sys-color-primary: #1f4cdb;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #dbe1ff;
  --md-sys-color-on-primary-container: #001767;

  --md-sys-color-secondary: #485c88;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #d6e3ff;
  --md-sys-color-on-secondary-container: #001b3e;

  --md-sys-color-surface: #f9f9fe;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #f3f3fa;
  --md-sys-color-surface-container: #edecf4;
  --md-sys-color-surface-container-high: #e7e6ee;
  --md-sys-color-surface-container-highest: #e1e0e8;

  --md-sys-color-on-surface: #20232a;
  --md-sys-color-on-surface-variant: #44474f;
  --md-sys-color-outline: #74777f;
  --md-sys-color-outline-variant: #c4c6d0;

  --status-live: #00875a;
  --status-live-container: #d3f9e5;
  --status-live-text: #00472e;
  --status-wip: #b76e00;
  --status-wip-container: #ffe8cb;
  --status-wip-text: #573000;

  --accent: var(--md-sys-color-primary);
  --accent-glow: rgba(31, 76, 219, 0.08);
  --status-dot: var(--status-live);

  color-scheme: light dark;
}

/* Dark Theme Shared Custom Properties */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --md-sys-color-primary: #b4c5ff;
    --md-sys-color-on-primary: #002a78;
    --md-sys-color-primary-container: #003da6;
    --md-sys-color-on-primary-container: #dbe1ff;

    --md-sys-color-secondary: #b3c7f9;
    --md-sys-color-on-secondary: #193057;
    --md-sys-color-secondary-container: #31466f;
    --md-sys-color-on-secondary-container: #d6e3ff;

    --md-sys-color-surface: #111319;
    --md-sys-color-surface-container-lowest: #0c0e14;
    --md-sys-color-surface-container-low: #191c22;
    --md-sys-color-surface-container: #1d2026;
    --md-sys-color-surface-container-high: #272a31;
    --md-sys-color-surface-container-highest: #32353c;

    --md-sys-color-on-surface: #e2e2e9;
    --md-sys-color-on-surface-variant: #c4c6d0;
    --md-sys-color-outline: #8e9099;
    --md-sys-color-outline-variant: #44474f;

    --status-live: #5ce6aa;
    --status-live-container: #004d31;
    --status-live-text: #b6f8da;
    --status-wip: #ffba66;
    --status-wip-container: #643900;
    --status-wip-text: #ffe5c7;

    --accent: var(--md-sys-color-primary);
    --accent-glow: rgba(180, 197, 255, 0.1);
    --status-dot: var(--status-live);

    --md-elevation-1: 0 1px 3px 1px rgba(0, 0, 0, 0.35), 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --md-elevation-2: 0 2px 8px 2px rgba(0, 0, 0, 0.45), 0 1px 3px 0 rgba(0, 0, 0, 0.4);
    --md-elevation-3: 0 4px 16px 4px rgba(0, 0, 0, 0.55), 0 2px 4px 0 rgba(0, 0, 0, 0.45);
  }
}

[data-theme="dark"] {
  --md-sys-color-primary: #b4c5ff;
  --md-sys-color-on-primary: #002a78;
  --md-sys-color-primary-container: #003da6;
  --md-sys-color-on-primary-container: #dbe1ff;

  --md-sys-color-secondary: #b3c7f9;
  --md-sys-color-on-secondary: #193057;
  --md-sys-color-secondary-container: #31466f;
  --md-sys-color-on-secondary-container: #d6e3ff;

  --md-sys-color-surface: #111319;
  --md-sys-color-surface-container-lowest: #0c0e14;
  --md-sys-color-surface-container-low: #191c22;
  --md-sys-color-surface-container: #1d2026;
  --md-sys-color-surface-container-high: #272a31;
  --md-sys-color-surface-container-highest: #32353c;

  --md-sys-color-on-surface: #e2e2e9;
  --md-sys-color-on-surface-variant: #c4c6d0;
  --md-sys-color-outline: #8e9099;
  --md-sys-color-outline-variant: #44474f;

  --status-live: #5ce6aa;
  --status-live-container: #004d31;
  --status-live-text: #b6f8da;
  --status-wip: #ffba66;
  --status-wip-container: #643900;
  --status-wip-text: #ffe5c7;

  --accent: var(--md-sys-color-primary);
  --accent-glow: rgba(180, 197, 255, 0.1);
  --status-dot: var(--status-live);

  --md-elevation-1: 0 1px 3px 1px rgba(0, 0, 0, 0.35), 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --md-elevation-2: 0 2px 8px 2px rgba(0, 0, 0, 0.45), 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --md-elevation-3: 0 4px 16px 4px rgba(0, 0, 0, 0.55), 0 2px 4px 0 rgba(0, 0, 0, 0.45);
}

/* --------------------------------------------------------------------------
   2. Reset & Base Setup
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-sans);
  font-optical-sizing: auto;
  font-size: 16px;
  line-height: 1.6;
  scrollbar-gutter: stable;
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
}

.ambient-glow {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(100%, 1200px);
  height: 480px;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, var(--accent-glow), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* --------------------------------------------------------------------------
   3. Material 3 Top App Bar
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  background: color-mix(in srgb, var(--md-sys-color-surface) 92%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: var(--header-height);
  padding: 0 var(--page-padding-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-decoration: none;
  color: var(--md-sys-color-on-surface);
  line-height: 1.2;
  transition: opacity var(--transition-fast);
}

.site-brand:hover {
  opacity: 0.82;
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 750;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--md-sys-color-on-surface);
}

.brand-tagline {
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface-variant);
  letter-spacing: 0.01em;
  margin-top: 0.15rem;
}

.header-trailing {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav .nav-link {
  text-decoration: none;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.45rem 0.95rem;
  border-radius: var(--md-shape-full);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.site-nav .nav-link:hover {
  color: var(--md-sys-color-on-surface);
  background-color: color-mix(in srgb, var(--md-sys-color-on-surface) 8%, transparent);
}

.site-nav .nav-link[aria-current="page"] {
  color: var(--md-sys-color-on-secondary-container);
  background-color: var(--md-sys-color-secondary-container);
  font-weight: 600;
}

/* M3 Icon Button */
.m3-icon-button,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--md-shape-full);
  border: none;
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  padding: 0;
  transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-normal);
}

.m3-icon-button:hover,
.theme-toggle:hover {
  color: var(--md-sys-color-on-surface);
  background-color: color-mix(in srgb, var(--md-sys-color-on-surface) 8%, transparent);
  transform: rotate(15deg);
}

.m3-icon-button:active,
.theme-toggle:active {
  background-color: color-mix(in srgb, var(--md-sys-color-on-surface) 12%, transparent);
  transform: scale(0.92);
}

.icon-sun,
.icon-moon {
  display: flex;
  align-items: center;
  justify-content: center;
}

:root .icon-sun { display: none; }
:root .icon-moon { display: flex; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun { display: flex; }
  :root:not([data-theme="light"]) .icon-moon { display: none; }
}

[data-theme="dark"] .icon-sun { display: flex; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: flex; }

/* --------------------------------------------------------------------------
   4. Chips, Badges & Interactive Buttons
   -------------------------------------------------------------------------- */
.m3-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.95rem;
  border-radius: var(--md-shape-full);
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.m3-chip-outlined {
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  border: 1px solid var(--md-sys-color-outline-variant);
}

.m3-chip-assist {
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
}

.m3-chip-assist:hover {
  background: var(--md-sys-color-surface-container-highest);
  border-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-primary);
  transform: translateY(-1px);
}

.m3-chip-icon {
  font-size: 0.9em;
  color: var(--md-sys-color-primary);
}

.m3-chip-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: auto;
}

.m3-mini-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: var(--md-shape-md);
  font-size: 0.74rem;
  font-weight: 600;
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  border: 1px solid var(--md-sys-color-outline-variant);
  transition: all var(--transition-fast);
}

.project-card:hover .m3-mini-chip {
  background: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
}

/* Status Chips */
.m3-status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--md-shape-full);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  border: 1px solid transparent;
}

.m3-status-live {
  background: var(--status-live-container);
  color: var(--status-live-text);
}

.m3-status-wip {
  background: var(--status-wip-container);
  color: var(--status-wip-text);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--md-shape-full);
  background-color: var(--status-live);
  box-shadow: 0 0 6px var(--status-live);
  animation: pulse-dot 2.5s infinite ease-in-out;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* Expressive Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.45rem;
  border-radius: var(--md-shape-full);
  font-family: var(--font-sans);
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-normal);
  line-height: 1;
}

.m3-btn-filled,
.btn-primary {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: var(--md-elevation-1);
}

.m3-btn-filled:hover,
.btn-primary:hover {
  background: color-mix(in srgb, var(--md-sys-color-primary) 90%, black);
  transform: translateY(-2px);
  box-shadow: var(--md-elevation-2);
}

.m3-btn-tonal {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  box-shadow: var(--md-elevation-1);
}

.m3-btn-tonal:hover {
  background: color-mix(in srgb, var(--md-sys-color-secondary-container) 85%, var(--md-sys-color-primary));
  transform: translateY(-2px);
  box-shadow: var(--md-elevation-2);
}

.m3-btn-outlined,
.btn-secondary {
  background: transparent;
  color: var(--md-sys-color-on-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
}

.m3-btn-outlined:hover,
.btn-secondary:hover {
  background: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-outline);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn-arrow {
  display: inline-block;
  transition: transform var(--transition-normal);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   5. Main Content Shell & Page Headers
   -------------------------------------------------------------------------- */
.site-main {
  position: relative;
  z-index: 1;
  flex: 1 0 auto;
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding: clamp(2rem, 4vw, 3.5rem) var(--page-padding-x) clamp(3.5rem, 6vw, 6rem);
}

.page-article {
  width: 100%;
}

.page-header {
  margin-bottom: 2.75rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.page-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.5vw, 3.25rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.018em;
  color: var(--md-sys-color-on-surface);
  text-wrap: balance;
}

.page-subtitle {
  margin: 1rem 0 0 0;
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--md-sys-color-on-surface-variant);
  max-width: 68ch;
  text-wrap: pretty;
}

.header-split {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.header-badge-box {
  display: flex;
  align-items: center;
  padding-top: 0.5rem;
}

/* --------------------------------------------------------------------------
   6. Editorial Feature Stories (Title + Body Text + Image)
   -------------------------------------------------------------------------- */
.feature-stories {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 6rem;
  margin-bottom: 5rem;
}

.story-block {
  width: 100%;
}

.story-block > [id],
.story-block > div {
  position: relative;
  width: 100%;
  box-sizing: border-box;
  min-height: clamp(320px, 34vw, 420px);
  padding-right: calc(46% + clamp(2rem, 4vw, 4rem));
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Visual element (image) positioned on the right */
.story-block figure,
.story-block p:has(> img),
.story-block p:has(> figure),
.story-block > div > p:has(> img),
.story-block > div > figure {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 46%;
  margin: 0;
  border-radius: var(--md-shape-2xl);
  overflow: hidden;
  border: 1px solid var(--md-sys-color-outline-variant);
  background: var(--md-sys-color-surface-container-low);
  box-shadow: var(--md-elevation-1);
  transition: all var(--transition-normal);
  line-height: 0;
}

.story-block figure:hover,
.story-block p:has(> img):hover,
.story-block p:has(> figure):hover,
.story-block > div > p:has(> img):hover,
.story-block > div > figure:hover {
  border-color: color-mix(in srgb, var(--md-sys-color-primary) 35%, var(--md-sys-color-outline-variant));
  box-shadow: var(--md-elevation-2);
}

.story-block figure img,
.story-block p:has(> img) img,
.story-block p:has(> figure) img,
.story-block img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  border: none;
  border-radius: 0;
  transition: transform 450ms var(--md-motion-standard);
}

.story-block figure:hover img,
.story-block p:has(> img):hover img,
.story-block p:has(> figure):hover img,
.story-block img:hover {
  transform: scale(1.025);
}

/* Reversed layout: image on LEFT, text on RIGHT */
.story-block.story-block-reversed > [id],
.story-block.story-block-reversed > div {
  padding-right: 0;
  padding-left: calc(46% + clamp(2rem, 4vw, 4rem));
}

.story-block.story-block-reversed figure,
.story-block.story-block-reversed p:has(> img),
.story-block.story-block-reversed p:has(> figure),
.story-block.story-block-reversed > div > p:has(> img),
.story-block.story-block-reversed > div > figure {
  right: auto;
  left: 0;
}

/* Typography & Tag Details */
.story-tag {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--md-sys-color-primary);
  display: inline-block;
}

.story-block p:has(> .story-tag) {
  margin: 0 0 0.75rem 0;
  line-height: 1;
}

.story-title,
.story-block h2 {
  margin: 0 0 1.15rem 0;
  padding-bottom: 0;
  border-bottom: none;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 2.5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--md-sys-color-on-surface);
  text-wrap: balance;
}

.story-block p:not(:has(> img)) {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--md-sys-color-on-surface-variant);
  margin: 0 0 1rem 0;
  text-wrap: pretty;
}

.story-block p:has(+ p:has(> img)),
.story-block p:has(+ figure),
.story-block p:not(:has(> img)):last-of-type {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   7. Projects Showcase Grid (projects.shtml)
   -------------------------------------------------------------------------- */
.projects-showcase {
  margin-bottom: 3.5rem;
}

.project-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-2xl);
  padding: 1.85rem;
  box-shadow: var(--md-elevation-1);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: all var(--transition-normal);
}

.project-card:hover {
  background: var(--md-sys-color-surface-container);
  border-color: var(--md-sys-color-primary);
  transform: translateY(-4px);
  box-shadow: var(--md-elevation-3);
}

.project-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.project-tech {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--md-sys-color-outline);
  font-weight: 550;
}

.project-card-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 750;
  letter-spacing: -0.025em;
  color: var(--md-sys-color-on-surface);
}

.project-card-desc {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--md-sys-color-on-surface-variant);
  flex: 1;
}

.project-card-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* --------------------------------------------------------------------------
   8. Blog Entries & Post Articles
   -------------------------------------------------------------------------- */
.rss-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.rss-dot {
  width: 7px;
  height: 7px;
  border-radius: var(--md-shape-full);
  background: #f97316;
}

.page-intro {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.latest-post-section {
  margin-bottom: 4.5rem;
  padding-bottom: 3.5rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.latest-post-featured .post-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.latest-post-featured .post-title a:hover {
  color: var(--md-sys-color-primary);
}

.posts-section {
  margin-top: 2rem;
}

.section-header-inline {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--md-sys-color-outline);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.posts-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-item-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.35rem 1.65rem;
  text-decoration: none;
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-xl);
  box-shadow: var(--md-elevation-1);
  transition: all var(--transition-normal);
}

.post-item-link:hover {
  background: var(--md-sys-color-surface-container);
  border-color: var(--md-sys-color-primary);
  transform: translateY(-3px);
  box-shadow: var(--md-elevation-3);
}

.post-item-info {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.post-item-meta-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.post-item-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.55rem;
  border-radius: var(--md-shape-full);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-weight: 700;
}

.post-item-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
  letter-spacing: -0.015em;
  transition: color var(--transition-fast);
}

.post-item-link:hover .post-item-title {
  color: var(--md-sys-color-primary);
}

.post-item-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--md-sys-color-outline);
}

.post-item-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--md-shape-full);
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  flex-shrink: 0;
  transition: all var(--transition-normal);
}

.post-item-link:hover .post-item-action-btn {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  transform: translateX(4px) scale(1.05);
}

.post-item-arrow {
  font-size: 1.1rem;
}

/* Post Article Details */
.post-article {
  width: 100%;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--md-sys-color-on-surface-variant);
  letter-spacing: 0.04em;
}

.post-footer-card {
  margin-top: 4rem;
  padding: 1.85rem 2.25rem;
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-2xl);
  box-shadow: var(--md-elevation-1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.post-footer-author {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.brand-monogram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px 22px 16px 22px;
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-family: var(--font-display);
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: var(--md-elevation-1);
}

.brand-monogram-sm {
  width: 32px;
  height: 32px;
  font-size: 0.82rem;
  border-radius: 10px 14px 10px 14px;
}

.brand-monogram-lg {
  width: 52px;
  height: 52px;
  font-size: 1.15rem;
  border-radius: 18px 24px 18px 24px;
}

.m3-label-large {
  font-family: var(--font-display);
  font-weight: 750;
  font-size: 1.05rem;
  color: var(--md-sys-color-on-surface);
}

.post-footer-text {
  margin: 0.35rem 0 0 0;
  font-size: 0.94rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.6;
  max-width: 48ch;
}

.post-footer-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.post-nav {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.post-nav-item {
  display: flex;
}

.post-nav-next {
  justify-content: flex-end;
  text-align: right;
}

.post-nav-link {
  display: inline-flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.15rem 1.45rem;
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-xl);
  text-decoration: none;
  width: 100%;
  transition: all var(--transition-normal);
}

.post-nav-link:hover {
  border-color: var(--md-sys-color-primary);
  background: var(--md-sys-color-surface-container);
  transform: translateY(-2px);
  box-shadow: var(--md-elevation-2);
}

.post-nav-direction {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--md-sys-color-outline);
  font-weight: 600;
}

.post-nav-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
  line-height: 1.35;
}

/* --------------------------------------------------------------------------
   9. Content Body & Markdown Typography (M3 Type Scale)
   -------------------------------------------------------------------------- */
.content-body {
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--md-sys-color-on-surface);
}

.content-body > *:first-child { margin-top: 0; }
.content-body > *:last-child { margin-bottom: 0; }

.content-body p {
  margin-block: 1.35rem;
  line-height: 1.75;
  text-wrap: pretty;
}

.content-body h1,
.content-body h2,
.content-body h3,
.content-body h4 {
  color: var(--md-sys-color-on-surface);
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.content-body h1 {
  font-size: 1.85rem;
  margin-top: 2.75rem;
  margin-bottom: 1.15rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.content-body h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.content-body h3 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.85rem;
}

.content-body h4 {
  font-size: 1.1rem;
  margin-top: 1.75rem;
  margin-bottom: 0.65rem;
}

.content-body a {
  color: var(--md-sys-color-primary);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--md-sys-color-primary) 35%, transparent);
  text-underline-offset: 3px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.content-body a:hover {
  text-decoration-color: var(--md-sys-color-primary);
}

.content-body strong,
.content-body b {
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
}

.content-body ul,
.content-body ol {
  margin-block: 1.35rem;
  padding-left: 1.75rem;
}

.content-body li {
  margin-block: 0.5rem;
  line-height: 1.7;
}

.content-body hr {
  margin-block: 3rem;
  border: none;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.content-body blockquote {
  margin-block: 2rem;
  padding: 1.25rem 1.65rem;
  border-left: 4px solid var(--md-sys-color-primary);
  background: var(--md-sys-color-surface-container);
  border-radius: 0 var(--md-shape-xl) var(--md-shape-xl) 0;
  color: var(--md-sys-color-on-surface-variant);
  font-style: italic;
}

.block {
  border: 1px solid var(--md-sys-color-outline-variant);
  border-left: 5px solid var(--md-sys-color-primary);
  background: var(--md-sys-color-surface-container);
  border-radius: var(--md-shape-xl);
  padding: 1.35rem 1.75rem;
  margin-block: 2rem;
  box-shadow: var(--md-elevation-1);
}

.block h1 {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
  padding-bottom: 0;
  border-bottom: none;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--md-sys-color-primary);
}

/* Code & Preformatted Blocks */
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  padding: 0.2em 0.45em;
  border-radius: var(--md-shape-xs);
  border: 1px solid var(--md-sys-color-outline-variant);
}

pre {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  background-color: var(--md-sys-color-surface-container-lowest);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-xl);
  padding: 1.35rem 1.65rem;
  overflow-x: auto;
  margin-block: 2rem;
  box-shadow: var(--md-elevation-1);
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}

/* Media Elements */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--md-shape-xl);
  border: 1px solid var(--md-sys-color-outline-variant);
}

figure {
  margin-block: 2.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

figcaption {
  font-size: 0.88rem;
  color: var(--md-sys-color-outline);
}

.small {
  font-size: 0.85em;
  color: var(--md-sys-color-outline);
}

/* --------------------------------------------------------------------------
   10. Material 3 Footer
   -------------------------------------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 1;
  width: 100%;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  background: var(--md-sys-color-surface-container);
  padding: 3.5rem 0 2.25rem;
  margin-top: auto;
  transition: all var(--transition-normal);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding-x);
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  flex-wrap: wrap;
}

.footer-brand-col {
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.footer-brand-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 750;
  font-size: 1.05rem;
  color: var(--md-sys-color-on-surface);
}

.footer-bio {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--md-sys-color-on-surface-variant);
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--md-sys-color-on-surface-variant);
}

.footer-nav-cols {
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.35rem;
}

.footer-link {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.9rem;
  font-weight: 550;
  text-decoration: none;
  transition: all var(--transition-fast);
  padding: 0.2rem 0;
}

.footer-link:hover {
  color: var(--md-sys-color-primary);
  transform: translateX(3px);
}

.footer-bottom {
  padding-top: 1.75rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.84rem;
  color: var(--md-sys-color-outline);
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* --------------------------------------------------------------------------
   11. Responsive Layout Adaptations
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .project-cards-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
    padding: 0 var(--page-padding-x);
  }

  .brand-tagline {
    display: none;
  }

  .site-nav .nav-link {
    padding: 0.38rem 0.65rem;
    font-size: 0.85rem;
  }

  .feature-stories {
    gap: 3.5rem;
  }

  .story-block > [id],
  .story-block > div,
  .story-block.story-block-reversed > [id],
  .story-block.story-block-reversed > div {
    min-height: auto;
    padding-left: 0;
    padding-right: 0;
    margin-bottom: 3.5rem;
  }

  .story-block figure,
  .story-block p:has(> img),
  .story-block p:has(> figure),
  .story-block > div > p:has(> img),
  .story-block > div > figure,
  .story-block.story-block-reversed figure,
  .story-block.story-block-reversed p:has(> img),
  .story-block.story-block-reversed p:has(> figure),
  .story-block.story-block-reversed > div > p:has(> img),
  .story-block.story-block-reversed > div > figure {
    position: static;
    transform: none;
    width: 100%;
    margin: 1.5rem 0 0 0;
  }

  .site-main {
    padding: 1.75rem 1rem 3.5rem;
  }

  .footer-inner {
    padding: 0 1rem;
  }

  .post-footer-card {
    padding: 1.5rem;
  }

  .post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav-next {
    justify-content: flex-start;
    text-align: left;
  }
}

/* --------------------------------------------------------------------------
   12. Material 3 View Transitions (Smooth In-Memory Page Swapping)
   -------------------------------------------------------------------------- */
@view-transition {
  navigation: auto;
}

:root {
  view-transition-name: none;
}

.site-header {
  view-transition-name: site-header;
}

::view-transition-old(site-header),
::view-transition-new(site-header) {
  animation: none;
}

.site-main {
  view-transition-name: site-main;
}

::view-transition-old(site-main),
::view-transition-new(site-main) {
  animation-duration: 120ms;
  animation-timing-function: cubic-bezier(0.2, 0, 0, 1);
}

::view-transition-old(site-main) {
  animation-name: m3-content-fade-out;
}

::view-transition-new(site-main) {
  animation-name: m3-content-fade-in;
}

@keyframes m3-content-fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes m3-content-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(site-main),
  ::view-transition-new(site-main) {
    animation-duration: 0ms !important;
  }
}