/*
  Minimal Portfolio
  ------------------
  - Pure CSS, no JavaScript
  - Fluid type via clamp()
  - CSS custom properties for colors, spacing, typography
  - Light / Dark themes with prefers-color-scheme and :has()
  - Mobile-first, responsive layout using flexbox and grid
*/

/* ------------------------------
   Reset / base
   ------------------------------ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: var(--anchor-offset);
}

body {
  margin: 0;
  min-height: 100vh;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration-color: transparent;
  text-underline-offset: 0.12em;
  transition: text-decoration-color 150ms ease, color 150ms ease;
}

a:hover {
  text-decoration-color: currentColor;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

/* ------------------------------
   Typography & font faces
   ------------------------------ */

@font-face {
  font-family: "Poppins";
  src: url("../fonts/poppins-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Poppins";
  src: url("../fonts/poppins-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Poppins";
  src: url("../fonts/poppins-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

/* uncomment this when we need a 700 weight font 
@font-face {
  font-family: "Poppins";
  src: url("../fonts/poppins-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
*/

:root {
  /* Typography scale */
  --font-body: "Poppins", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Poppins", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;

  --step--1: clamp(0.85rem, 0.82rem + 0.15vw, 0.92rem);
  --step-0: clamp(1rem, 0.96rem + 0.3vw, 1.0625rem);
  --step-1: clamp(1.15rem, 1.08rem + 0.55vw, 1.35rem);
  --step-2: clamp(1.45rem, 1.3rem + 1vw, 1.8rem);
  --step-3: clamp(1.9rem, 1.6rem + 1.8vw, 2.4rem);

  /* Layout */
  --page-gutter: clamp(1.25rem, 3vw, 3rem);
  --page-max-width: 64rem;
  --anchor-offset: clamp(4.05rem, 5.7vw, 5.3rem);

  --radius-pill: 999px;

  --shadow-soft: 0 10px 35px rgba(15, 15, 25, 0.14);

  /* Tactile feedback: 1 = on, 0 = off */
  --tactile: 1;

  /* Color tokens: base light */
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-surface-subtle: #f0f0f4;
  --color-border-subtle: rgba(15, 15, 25, 0.06);

  --color-fg: #15151e;
  --color-fg-soft: #5c5c6a;
  --color-fg-weak: #7c7c8a;

  --color-accent: #2f6df6;
  --color-accent-soft: rgba(47, 109, 246, 0.14);
  --color-accent-strong: #1744b0;
  --color-accent-rule: rgba(47, 109, 246, 0.45);

  --color-outline: #15151e;

  --button-primary-bg: #15151e;
  --button-primary-fg: #fbfbfc;
  --button-ghost-bg: rgba(21, 21, 30, 0.02);

  color-scheme: light dark;
}

/* Prevent sticky header from clipping in-page anchor targets */
[id] {
  scroll-margin-top: var(--anchor-offset);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #050509;
    --color-surface: #0b0b13;
    --color-surface-subtle: #11111e;
    --color-border-subtle: rgba(230, 230, 255, 0.06);

    --color-fg: #f6f6fd;
    --color-fg-soft: #b3b3c5;
    --color-fg-weak: #8d8da0;

    --color-accent: #94b6ff;
    --color-accent-soft: rgba(148, 182, 255, 0.14);
    --color-accent-strong: #d6e1ff;
    --color-accent-rule: rgba(148, 182, 255, 0.7);

    --color-outline: #f6f6fd;

    --button-primary-bg: #f6f6fd;
    --button-primary-fg: #050509;
    --button-ghost-bg: rgba(245, 245, 255, 0.02);
  }
}

/* Force explicit light / dark themes when toggled */
body:has(#theme-toggle) {
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-surface-subtle: #f0f0f4;
  --color-border-subtle: rgba(15, 15, 25, 0.06);

  --color-fg: #15151e;
  --color-fg-soft: #5c5c6a;
  --color-fg-weak: #7c7c8a;

  --color-accent: #2f6df6;
  --color-accent-soft: rgba(47, 109, 246, 0.14);
  --color-accent-strong: #1744b0;
  --color-accent-rule: rgba(47, 109, 246, 0.45);

  --color-outline: #15151e;

  --button-primary-bg: #15151e;
  --button-primary-fg: #fbfbfc;
  --button-ghost-bg: rgba(21, 21, 30, 0.02);

  color-scheme: light;
}

body:has(#theme-toggle:checked) {
  --color-bg: #050509;
  --color-surface: #0b0b13;
  --color-surface-subtle: #11111e;
  --color-border-subtle: rgba(230, 230, 255, 0.06);

  --color-fg: #f6f6fd;
  --color-fg-soft: #b3b3c5;
  --color-fg-weak: #8d8da0;

  --color-accent: #94b6ff;
  --color-accent-soft: rgba(148, 182, 255, 0.14);
  --color-accent-strong: #d6e1ff;
  --color-accent-rule: rgba(148, 182, 255, 0.7);

  --color-outline: #f6f6fd;

  --button-primary-bg: #f6f6fd;
  --button-primary-fg: #050509;
  --button-ghost-bg: rgba(245, 245, 255, 0.02);

  color-scheme: dark;
}

body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  background-color: var(--color-bg);
  color: var(--color-fg);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
  font-weight: 600;
  margin: 0 0 0.5em;
}

h1 {
  font-size: var(--step-3);
  line-height: 1.05;
}

h2 {
  font-size: var(--step-2);
  line-height: 1.1;
}

h3 {
  font-size: var(--step-1);
  line-height: 1.15;
}

p {
  margin: 0 0 1em;
  color: var(--color-fg-soft);
}

dt {
  font-weight: 500;
  color: var(--color-fg-weak);
}

dd {
  margin: 0;
}

/* ------------------------------
   Focus, skip link, selection
   ------------------------------ */

:focus-visible {
  outline: 2px solid var(--color-outline);
  outline-offset: 3px;
}

::selection {
  background-color: var(--color-accent-soft);
}

.skip-link {
  position: fixed;
  left: 50%;
  top: 0.75rem;
  transform: translate(-50%, -150%);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-fg);
  box-shadow: var(--shadow-soft);
  font-size: var(--step--1);
  text-decoration: none;
  z-index: 1000;
  transition: transform 160ms ease;
}

.skip-link:focus-visible {
  transform: translate(-50%, 0);
}

/* ------------------------------
   Layout shell
   ------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: linear-gradient(
    to bottom,
    color-mix(in srgb, var(--color-bg) 98%, transparent),
    color-mix(in srgb, var(--color-bg) 94%, transparent)
  );
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header__inner,
.site-main,
.site-footer__inner {
  max-width: var(--page-max-width);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding-block: 0.75rem;
}

.site-main {
  padding-inline: var(--page-gutter);
  padding-block: 3.5rem 3.25rem;
}

.site-footer {
  border-top: 1px solid var(--color-border-subtle);
}

.site-footer__inner {
  padding: 1.25rem var(--page-gutter) 1.75rem;
  font-size: var(--step--1);
  color: var(--color-fg-weak);
  text-align: center;
}

.site-footer__heart {
  color: var(--color-accent-rule);
}

/* ------------------------------
   Header: brand, nav, theme
   ------------------------------ */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
}

.brand__title {
  font-family: var(--font-heading);
  font-size: clamp(1.16rem, 1.07rem + 0.42vw, 1.32rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.brand__subtitle {
  font-size: var(--step--1);
  color: var(--color-fg-weak);
  line-height: 1.2;
}

.site-nav {
  margin-left: auto;
}

.site-nav__list {
  list-style: none;
  display: flex;
  gap: 1.2rem;
  padding: 0;
  margin: 0;
  font-size: var(--step--1);
}

.site-nav__list a {
  padding-block: 0.25rem;
  text-decoration: none;
  transition: color 150ms ease, text-decoration-color 150ms ease;
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible {
  color: var(--color-accent);
  text-decoration-color: transparent;
}

.site-nav__list a:active {
  transform: scale(calc(1 - 0.04 * var(--tactile)));
  transition-duration: calc(50ms * var(--tactile));
}

.theme-switch {
  --switch-track-width: clamp(3rem, 4.6vw, 3.4rem);
  --switch-track-height: clamp(1.72rem, 2.7vw, 1.95rem);
  --switch-track-padding: clamp(0.12rem, 0.2vw, 0.15rem);
  --switch-thumb-size: clamp(1.34rem, 2.2vw, 1.55rem);
  display: inline-flex;
  position: relative;
  margin-left: 1rem;
  align-self: center;
}

.theme-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  overflow: hidden;
  white-space: nowrap;
}

.theme-switch__button {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  border-radius: var(--radius-pill);
  cursor: pointer;
  user-select: none;
  transition: transform 80ms ease;
}

.theme-switch__track {
  width: var(--switch-track-width);
  height: var(--switch-track-height);
  padding: var(--switch-track-padding);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(245, 250, 255, 0.16);
  background: linear-gradient(145deg, #232f45, #182235);
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.08),
    0 6px 18px rgba(9, 16, 30, 0.24);
  transition: background 220ms ease, box-shadow 220ms ease;
}

.theme-switch__button:active {
  transform: scale(calc(1 - 0.08 * var(--tactile)));
}

.theme-switch__thumb {
  width: var(--switch-thumb-size);
  height: var(--switch-thumb-size);
  border-radius: 50%;
  background-color: #f6f9ff;
  color: #1f2a3f;
  box-shadow:
    0 1px 2px rgba(9, 16, 30, 0.35),
    0 5px 10px rgba(9, 16, 30, 0.22);
  position: relative;
  display: inline-grid;
  place-items: center;
  transform: translateX(0);
  transition:
    transform 270ms cubic-bezier(0.34, 1.56, 0.64, 1),
    background-color 220ms ease,
    color 220ms ease;
}

.theme-switch__icon {
  position: absolute;
  width: 0.86rem;
  height: 0.86rem;
  transition: opacity 180ms ease, transform 220ms ease;
}

.theme-switch__icon--moon {
  opacity: 0;
  transform: scale(0.6) rotate(-20deg);
}

.theme-switch__button:hover .theme-switch__track {
  background: linear-gradient(145deg, #2a3750, #1c2940);
}

.theme-switch__input:checked + .theme-switch__button .theme-switch__track {
  background: linear-gradient(145deg, #1d2940, #141f33);
}

.theme-switch__input:checked + .theme-switch__button .theme-switch__thumb {
  transform: translateX(
    calc(
      var(--switch-track-width) - var(--switch-thumb-size) - (2 * var(--switch-track-padding))
    )
  );
  background-color: #fefeff;
  color: #162034;
}

.theme-switch__input:checked + .theme-switch__button .theme-switch__icon--moon {
  opacity: 1;
  transform: scale(1) rotate(0);
}

.theme-switch__input:checked + .theme-switch__button .theme-switch__icon--sun {
  opacity: 0;
  transform: scale(0.65) rotate(20deg);
}

.theme-switch__input:focus-visible + .theme-switch__button .theme-switch__track {
  outline: 2px solid var(--color-outline);
  outline-offset: 3px;
}

/* ------------------------------
   Hero
   ------------------------------ */

.hero {
  padding-bottom: 3.5rem;
  max-width: 38rem;
}

.hero h1 {
  font-size: var(--step-3);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 0.6em;
}

.hero__name {
  color: var(--color-accent);
}

.hero__lede {
  font-size: var(--step-1);
  max-width: 32rem;
}

.hero-meta {
  display: grid;
  gap: 0.9rem;
  margin: 2rem 0 0;
  padding: 1rem;
  border-radius: 1rem;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border-subtle);
}

.hero-meta__item dt {
  font-size: var(--step--1);
  margin-bottom: 0.15rem;
}

.hero-meta__item dd {
  font-size: var(--step--1);
}

/* ------------------------------
   Sections
   ------------------------------ */

.section {
  padding-block: 3rem 3rem;
  margin-block: 0;
  position: relative;
}

.section + .section {
  border-top: 1px solid transparent;
  border-image: linear-gradient(
    to right,
    var(--color-accent-rule),
    var(--color-border-subtle) 45%,
    transparent 80%
  ) 1;
}

.section.section--flipped + .section:not(.section--flipped) {
  border-image: linear-gradient(
    to right,
    transparent 20%,
    var(--color-border-subtle) 55%,
    var(--color-accent-rule)
  ) 1;
}

.section:not(.section--flipped) + .section.section--flipped {
  border-image: linear-gradient(
    to right,
    transparent 20%,
    var(--color-border-subtle) 55%,
    var(--color-accent-rule)
  ) 1;
}

.section__header {
  margin-bottom: 1.5rem;
}

.section__kicker {
  font-size: var(--step--1);
}

.section--split {
  display: grid;
  gap: 1.75rem;
}

.section--split .section__header {
  max-width: 14rem;
  padding-left: 0.85rem;
  border-left: 5px solid var(--color-accent-rule);
}

.section--split .section__body {
  max-width: 40rem;
  min-width: 0;
}

.section--split .section__body:has(.project-accordion),
.section--split .section__body:has(.timeline) {
  max-width: none;
}

.section--flipped .section__header {
  text-align: end;
  padding-left: 0;
  padding-right: 0.85rem;
  border-left: none;
  border-right: 5px solid var(--color-accent-rule);
}

.section--flipped .section__kicker {
  margin-inline-start: auto;
}

/* ------------------------------
   Project accordion
   ------------------------------ */

.project-accordion {
  display: grid;
  gap: 0;
}

.project-accordion__item {
  border-top: 1px solid var(--color-border-subtle);
  interpolate-size: allow-keywords;
}

.project-accordion__item:last-child {
  border-bottom: 1px solid var(--color-border-subtle);
}

.project-accordion__header {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0.5rem;
  cursor: pointer;
  list-style: none;
  border-radius: 0.5rem;
  transition: background-color 150ms ease;
}

.project-accordion__header:hover {
  background-color: var(--color-surface-subtle);
}

.project-accordion__header:active {
  transform: scale(calc(1 - 0.015 * var(--tactile)));
  background-color: var(--color-surface-subtle);
  transition-duration: calc(60ms * var(--tactile));
}

.project-accordion__header:active .project-accordion__chevron {
  transform: rotate(calc(90deg * var(--tactile)));
  transition-duration: calc(80ms * var(--tactile));
}

.project-accordion__header::-webkit-details-marker,
.project-accordion__header::marker {
  display: none;
  content: "";
}

.project-accordion__lead {
  min-width: 0;
}

.project-accordion__title {
  font-size: var(--step-1);
  margin: 0;
  transition: color 150ms ease;
}

.project-accordion__header:hover .project-accordion__title {
  color: var(--color-accent);
}

.project-accordion__brief {
  font-size: var(--step--1);
  color: var(--color-fg-weak);
  margin: 0.25rem 0 0;
  max-width: 42rem;
}

.project-accordion__pill {
  display: inline-flex;
  align-items: center;
  font-size: var(--step--1);
  border-radius: 999px;
  padding: 0.15rem 0.65rem;
  background-color: var(--color-surface-subtle);
  color: var(--color-fg-weak);
  white-space: nowrap;
}

.project-accordion__chevron {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  position: relative;
  transition: transform 200ms ease;
}

.project-accordion__chevron::before,
.project-accordion__chevron::after {
  content: "";
  position: absolute;
  background-color: var(--color-fg-weak);
  border-radius: 1px;
  transition: transform 200ms ease, opacity 200ms ease, background-color 150ms ease;
}

.project-accordion__header:hover .project-accordion__chevron::before,
.project-accordion__header:hover .project-accordion__chevron::after {
  background-color: var(--color-accent);
}

.project-accordion__chevron::before {
  top: 50%;
  left: 15%;
  right: 15%;
  height: 1.5px;
  transform: translateY(-50%);
}

.project-accordion__chevron::after {
  left: 50%;
  top: 15%;
  bottom: 15%;
  width: 1.5px;
  transform: translateX(-50%);
}

.project-accordion__item[open] .project-accordion__chevron::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.project-accordion__body {
  overflow: hidden;
  height: 0;
  padding: 0 0.5rem;
  transition: height 250ms ease, padding 250ms ease;
}

.project-accordion__item[open] .project-accordion__body {
  height: auto;
  padding: 0 0.5rem 1.5rem;
}

.project-accordion__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: 0.65rem 1.25rem;
  margin: 0 0 1rem;
  font-size: var(--step--1);
  padding: 1rem;
  border-radius: 0.75rem;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border-subtle);
}

.project-accordion__link {
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--color-accent);
}

.project-accordion__link:active {
  transform: scale(calc(1 - 0.03 * var(--tactile)));
  transition-duration: calc(50ms * var(--tactile));
}

@media (max-width: 47.99rem) {
  .project-accordion__header {
    grid-template-columns: 1fr auto;
    gap: 0.75rem;
  }

  .project-accordion__pill {
    grid-column: 1;
    justify-self: start;
    order: -1;
  }

  .project-accordion__chevron {
    grid-row: 1 / 3;
    grid-column: 2;
    align-self: center;
  }
}

/* ------------------------------
   Experience timeline
   ------------------------------ */

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.timeline__item {
  position: relative;
  padding-left: 1.5rem;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: 0.4rem;
  top: 0.25rem;
  bottom: -1.25rem;
  width: 1px;
  background: linear-gradient(
    to bottom,
    color-mix(in srgb, var(--color-fg-weak) 40%, transparent),
    transparent
  );
}

.timeline__item:last-child::before {
  bottom: 0.6rem;
}

.timeline__item::after {
  content: "";
  position: absolute;
  left: 0.1rem;
  top: 0.18rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background-color: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.timeline__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.75rem;
  margin-bottom: 0.25rem;
  font-size: var(--step--1);
}

.timeline__role {
  font-weight: 600;
}

.timeline__org {
  color: var(--color-fg-weak);
}

.timeline__time {
  margin-left: auto;
  color: var(--color-fg-weak);
}

.timeline__summary {
  font-size: var(--step--1);
}

/* ------------------------------
   Contact
   ------------------------------ */

.contact__email a {
  font-weight: 600;
  font-size: var(--step-0);
}

.contact__email a:active {
  transform: scale(calc(1 - 0.03 * var(--tactile)));
  transition-duration: calc(50ms * var(--tactile));
}

.contact__secondary {
  font-size: var(--step--1);
}

.contact__socials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.contact__social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 500;
}

.contact__social-link:hover,
.contact__social-link:focus-visible {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent-rule);
}

.contact__social-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  color: var(--color-accent);
}

/* ------------------------------
   Responsive
   ------------------------------ */

@media (max-width: 47.99rem) {
  .site-header__inner {
    flex-wrap: wrap;
    align-items: center;
  }

  .site-nav {
    order: 2;
    width: 100%;
  }

  .site-nav__list {
    justify-content: flex-start;
    gap: 0.9rem;
    flex-wrap: wrap;
  }

  .theme-switch {
    margin-left: auto;
    margin-top: 0.1rem;
  }

  .section--split {
    grid-template-columns: minmax(0, 1fr);
  }

  .section--split .section__header {
    max-width: none;
  }

  .section--flipped .section__header {
    text-align: start;
    padding-left: 0.85rem;
    padding-right: 0;
    border-left: 5px solid var(--color-accent-rule);
    border-right: none;
  }

  .section + .section,
  .section.section--flipped + .section:not(.section--flipped),
  .section:not(.section--flipped) + .section.section--flipped {
    border-image: linear-gradient(
      to right,
      var(--color-accent-rule),
      var(--color-border-subtle) 45%,
      transparent 80%
    ) 1;
  }

  .hero-meta {
    padding-inline: 0.75rem;
  }
}

@media (max-width: 23rem) {
  .brand__title {
    font-size: clamp(1.1rem, 1.02rem + 0.35vw, 1.24rem);
  }
}

@media (min-width: 48rem) {
  .hero {
    padding-bottom: 4.5rem;
  }

  .section--split {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 2fr);
    align-items: flex-start;
  }

  .section--split.section--flipped {
    grid-template-columns: minmax(0, 2fr) minmax(0, 0.9fr);
  }

  .section--split.section--flipped .section__header {
    order: 2;
  }

  .section--split.section--flipped .section__body {
    order: 1;
  }
}


/* ── Blog article layout ──────────────────────────────────── */

.blog-article {
  max-width: var(--page-max-width);
  margin-inline: auto;
}

.blog-article__header {
  padding-left: 0.85rem;
  border-left: 4px solid var(--color-accent-rule);
  margin-bottom: 2.5rem;
}

.blog-article__header h1 {
  font-size: var(--step-3);
  line-height: 1.15;
  margin: 0 0 0.5rem;
}

.blog-article__kicker {
  font-size: var(--step-0);
  color: var(--color-fg-soft);
  margin: 0 0 0.35rem;
}

.blog-article__meta {
  font-size: var(--step--1);
  color: var(--color-fg-weak);
  margin: 0;
}

.blog-article__grid {
  display: grid;
  gap: 2rem;
}

.blog-article__body {
  min-width: 0;
  max-width: 65ch;
}

.blog-article__body h2 {
  margin-top: 2.25rem;
}

/* ── Table of contents (sidebar) ───────────────────────────── */

.blog-article__toc {
  display: none;
}

@media (min-width: 60rem) {
  .blog-article__grid {
    grid-template-columns: minmax(0, 2.5fr) minmax(10rem, 0.8fr);
  }

  .blog-article__toc {
    display: block;
  }

  .blog-article__toc nav {
    position: sticky;
    top: 5rem;
  }

  .blog-article__toc-label {
    font-size: var(--step--1);
    font-weight: 600;
    color: var(--color-fg-soft);
    margin: 0 0 0.6rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
  }

  .blog-article__toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.45rem;
    border-left: 2px solid var(--color-border-subtle);
    padding-left: 0.75rem;
  }

  .blog-article__toc-list a {
    font-size: var(--step--1);
    color: var(--color-fg-weak);
    text-decoration: none;
    transition: color 150ms ease;
    line-height: 1.35;
  }

  .blog-article__toc-list a:hover {
    color: var(--color-accent);
  }
}

/* ── Blog code blocks ─────────────────────────────────────── */

.blog-article__body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

.blog-article__body p code,
.blog-article__body li code {
  font-size: 0.92em;
  padding: 0.1em 0.35em;
  border-radius: 0.35rem;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border-subtle);
}

.blog-article__body .codehilite {
  margin: 1.1rem 0;
  border: 1px solid var(--color-border-subtle);
  border-radius: 0.8rem;
  overflow-x: auto;
}

.blog-article__body .codehilite--copyable {
  position: relative;
}

.blog-article__body .code-copy-button {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  border: 1px solid var(--color-border-subtle);
  background-color: color-mix(in srgb, var(--color-surface) 92%, transparent);
  color: var(--color-fg-weak);
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 500;
  line-height: 1;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
}

.blog-article__body .code-copy-button:hover {
  color: var(--color-fg);
  background-color: var(--color-surface-subtle);
}

.blog-article__body .code-copy-button:active {
  transform: scale(calc(1 - 0.04 * var(--tactile)));
}

.blog-article__body .codehilite pre {
  margin: 0;
  padding: 2.1rem 1rem 0.95rem;
  font-size: 0.9rem;
  line-height: 1.5;
  width: max-content;
  min-width: 100%;
  white-space: pre;
}

/* ------------------------------
   Reduced motion
   ------------------------------ */

@media (prefers-reduced-motion: reduce) {
  :root {
    --tactile: 0;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}