/* ==========================================================================
   Design tokens — sourced from DESIGN.md ("Monad — editorial tech journal")
   Fonts substituted per DESIGN.md guidance:
     ABC Diatype Mono  -> JetBrains Mono
     Untitled Serif     -> Newsreader
   ========================================================================== */

:root {
  /* Colors */
  --color-parchment: #f6f3f1;
  --color-lake-blue: #2b59d1;
  --color-periwinkle-mist: #cfdaf5;
  --color-sky-blue: #a0b5eb;
  --color-mint: #a7fccd;
  --color-coral: #ff9473;
  --color-gold: #ecda98;
  --color-crimson: #f37a0a;
  --color-off-black: #242424;
  --color-ink: #000000;
  --color-graphite: #4e4d4d;
  --color-smoke: #797776;
  --color-ash: #cecac8;
  --color-white: #ffffff;

  /* Fonts */
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-serif: 'Newsreader', ui-serif, Georgia, Cambria, 'Times New Roman', Times, serif;

  /* Type scale */
  --text-caption: 12px;
  --text-body-sm: 14px;
  --text-body: 16px;
  --text-label: 18px;
  --text-body-lg: 20px;
  --text-subheading: 24px;
  --text-heading-sm: 32px;
  --text-heading: 40px;
  --text-heading-lg: 48px;
  --text-display: clamp(40px, 7vw, 80px);

  /* Spacing */
  --space-8: 8px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-64: 64px;
  --space-72: 72px;
  --space-80: 80px;

  /* Shape */
  --radius-card: 40px;
  --radius-pill: 100px;
  --radius-tag: 9999px;

  --shadow-md: rgba(0, 0, 0, 0.1) 0px 0px 10px 0px;

  --page-max-width: 1432px;
  --section-gap: 64px;
}

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

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-parchment);
  color: var(--color-off-black);
  font-family: var(--font-mono);
  font-size: var(--text-body);
  line-height: 1.35;
  letter-spacing: -0.4px;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, p {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

.container {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--space-80) 0;
}

.section--tight {
  padding: var(--space-64) 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-40);
}

.section-head--center {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-lake-blue);
  margin-bottom: var(--space-16);
}

.h-display {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-display);
  line-height: 1.1;
  letter-spacing: -1.6px;
  color: var(--color-off-black);
}

.h-section {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-heading-lg);
  line-height: 1.2;
  letter-spacing: -0.96px;
  color: var(--color-off-black);
}

.h-sub {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-heading-sm);
  line-height: 1.2;
  letter-spacing: -0.64px;
  color: var(--color-off-black);
}

.h-card {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-subheading);
  line-height: 1.2;
  letter-spacing: -0.48px;
  color: var(--color-off-black);
}

.text-lead {
  font-size: var(--text-body-lg);
  line-height: 1.35;
  color: var(--color-graphite);
}

.text-muted {
  color: var(--color-smoke);
}

.text-body {
  color: var(--color-graphite);
  line-height: 1.6;
}

/* ------------------------------ Buttons ------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  font-weight: 500;
  letter-spacing: -0.28px;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  padding: 16px 32px;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.92;
}

.btn--sm {
  padding: 10px 22px;
  font-size: var(--text-caption);
}

.btn-primary {
  background: var(--color-lake-blue);
  color: var(--color-white);
}

.btn-black {
  background: var(--color-off-black);
  color: var(--color-white);
}

.btn-ghost {
  background: transparent;
  border-color: var(--color-off-black);
  color: var(--color-off-black);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  color: var(--color-off-black);
  border-bottom: 1px solid var(--color-off-black);
  padding-bottom: 2px;
}

/* ------------------------------ Tags ------------------------------ */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-off-black);
  background: var(--color-parchment);
  border: 1px solid var(--color-ash);
  border-radius: var(--radius-tag);
  padding: 8px 16px;
}

.tag--featured {
  background: var(--color-off-black);
  color: var(--color-white);
  border-color: var(--color-off-black);
}

/* ------------------------------ Cards ------------------------------ */

.card {
  border: 1px solid var(--color-ash);
  border-radius: var(--radius-card);
  padding: var(--space-40);
  background: transparent;
}

.card--elevated {
  background: var(--color-periwinkle-mist);
  border: none;
}

.card--parchment {
  background: var(--color-parchment);
}

.stat-card {
  border: 1px solid var(--color-ash);
  border-radius: 24px;
  padding: var(--space-24);
  text-align: left;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: var(--text-heading);
  color: var(--color-off-black);
  letter-spacing: -0.8px;
}

.stat-label {
  font-size: var(--text-caption);
  text-transform: uppercase;
  color: var(--color-smoke);
  letter-spacing: 0.04em;
  margin-top: 4px;
}

/* ------------------------------ Gradient washes ------------------------------ */

.wash {
  position: absolute;
  border-radius: 999px;
  filter: blur(70px);
  z-index: 0;
  opacity: 0.8;
  pointer-events: none;
}

.wash--coral-sky {
  background: linear-gradient(135deg, var(--color-coral), var(--color-sky-blue));
}

.wash--sky-mint {
  background: linear-gradient(135deg, var(--color-sky-blue), var(--color-mint));
}

.wash--gold-coral {
  background: linear-gradient(135deg, var(--color-gold), var(--color-coral));
}

.placeholder-gradient {
  width: 100%;
  height: 100%;
  min-height: 200px;
  border-radius: 24px;
}

.placeholder-gradient--0 { background: linear-gradient(135deg, var(--color-coral) 0%, var(--color-sky-blue) 100%); }
.placeholder-gradient--1 { background: linear-gradient(135deg, var(--color-sky-blue) 0%, var(--color-mint) 100%); }
.placeholder-gradient--2 { background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-crimson) 100%); }

/* ------------------------------ Navbar ------------------------------ */

.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 243, 241, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-ash);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: -0.4px;
  color: var(--color-off-black);
}

.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-lake-blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-32);
}

.nav-links a {
  font-size: var(--text-body-sm);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-off-black);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
}

.nav-links a:hover,
.nav-links a.is-active {
  border-bottom-color: var(--color-lake-blue);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-16);
}

.lang-switch {
  display: flex;
  gap: 4px;
  border: 1px solid var(--color-ash);
  border-radius: var(--radius-pill);
  padding: 4px;
}

.lang-switch a {
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  color: var(--color-smoke);
}

.lang-switch a.is-active {
  background: var(--color-off-black);
  color: var(--color-white);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-ash);
  border-radius: 12px;
  padding: 8px 12px;
  color: var(--color-off-black);
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-80) 0;
}

.hero .wash {
  width: 480px;
  height: 480px;
  top: -160px;
  right: -140px;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--color-ash);
  border-radius: var(--radius-pill);
  padding: 8px 18px;
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-graphite);
  margin-bottom: var(--space-24);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-mint);
  box-shadow: 0 0 0 3px rgba(167, 252, 205, 0.35);
}

.hero-title {
  margin-bottom: var(--space-24);
}

.hero-title .accent {
  color: var(--color-lake-blue);
}

.hero-subtext {
  max-width: 620px;
  margin-bottom: var(--space-40);
}

.hero-actions {
  display: flex;
  gap: var(--space-16);
  flex-wrap: wrap;
}

/* ------------------------------ About ------------------------------ */

.about-grid {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: var(--space-64);
  align-items: start;
}

.about-portrait {
  aspect-ratio: 1;
  border-radius: var(--radius-card);
  background: var(--color-periwinkle-mist);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-portrait .initials {
  font-family: var(--font-serif);
  font-size: 96px;
  color: var(--color-off-black);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-32);
}

/* ------------------------------ Skills ------------------------------ */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-24);
}

.skill-category-title {
  font-family: var(--font-serif);
  font-size: var(--text-subheading);
  margin-bottom: var(--space-16);
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--color-ash);
  border-radius: var(--radius-tag);
  padding: 10px 16px;
  font-size: var(--text-body-sm);
  background: var(--color-parchment);
}

.skill-pill .bar {
  width: 36px;
  height: 4px;
  border-radius: 4px;
  background: var(--color-ash);
  overflow: hidden;
}

.skill-pill .bar span {
  display: block;
  height: 100%;
  background: var(--color-lake-blue);
}

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

.timeline-item {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: var(--space-32);
  padding: var(--space-40) 0;
  border-bottom: 1px solid var(--color-ash);
}

.timeline-item:first-child {
  padding-top: 0;
}

.timeline-item:last-child {
  border-bottom: none;
}

.timeline-period {
  font-size: var(--text-body-sm);
  color: var(--color-smoke);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.timeline-role {
  margin-bottom: 4px;
}

.timeline-company {
  color: var(--color-lake-blue);
  font-size: var(--text-body-sm);
  margin-bottom: var(--space-16);
  display: block;
}

/* ------------------------------ Projects ------------------------------ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-24);
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.project-cover {
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.project-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--space-16) 0;
}

.project-links {
  display: flex;
  gap: var(--space-24);
  margin-top: auto;
}

/* ------------------------------ Blog ------------------------------ */

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-24);
}

.post-card {
  display: flex;
  flex-direction: column;
}

.post-cover {
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  margin-bottom: var(--space-24);
}

.post-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-meta {
  font-size: var(--text-caption);
  text-transform: uppercase;
  color: var(--color-smoke);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-16);
}

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

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-64);
}

.form-field {
  margin-bottom: var(--space-24);
}

.form-label {
  display: block;
  font-size: var(--text-body-sm);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-graphite);
  margin-bottom: 8px;
}

.form-input,
.form-textarea {
  width: 100%;
  font-family: var(--font-mono);
  font-size: var(--text-body);
  color: var(--color-off-black);
  background: var(--color-white);
  border: 1px solid var(--color-ash);
  border-radius: 16px;
  padding: 14px 18px;
}

.form-textarea {
  min-height: 160px;
  resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-lake-blue);
}

.form-errors {
  color: var(--color-crimson);
  font-size: var(--text-caption);
  margin-top: 6px;
}

.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
}

.alert {
  border-radius: 16px;
  padding: 16px 20px;
  margin-bottom: var(--space-24);
  font-size: var(--text-body-sm);
}

.alert-success {
  background: var(--color-mint);
  color: var(--color-off-black);
}

.alert-error {
  background: var(--color-coral);
  color: var(--color-off-black);
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

.contact-info-item .label {
  font-size: var(--text-caption);
  text-transform: uppercase;
  color: var(--color-smoke);
  margin-bottom: 4px;
}

.social-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: var(--space-24);
}

/* ------------------------------ Footer ------------------------------ */

.footer {
  border-top: 1px solid var(--color-ash);
  padding: var(--space-64) 0 var(--space-32);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-40);
  margin-bottom: var(--space-64);
}

.footer-heading {
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-smoke);
  margin-bottom: var(--space-16);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-smoke);
  margin-bottom: var(--space-24);
}

.footer-stats .dot {
  color: var(--color-ash);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-ash);
  padding-top: var(--space-24);
  font-size: var(--text-caption);
  color: var(--color-smoke);
  flex-wrap: wrap;
  gap: 12px;
}

/* ------------------------------ Pagination ------------------------------ */

.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-16);
  margin-top: var(--space-64);
}

/* ------------------------------ 404 ------------------------------ */

.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-24);
  padding: var(--space-80) 0;
}

.error-code {
  font-family: var(--font-serif);
  font-size: 140px;
  line-height: 1;
  color: var(--color-periwinkle-mist);
}

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

/* Navbar: the full desktop bar (5 links + language switch + 2 buttons) needs
   ~1150px, so collapse to the hamburger menu below that, not just on phones. */
@media (max-width: 1100px) {
  .nav-links,
  .nav-actions .btn,
  .lang-switch {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    font-size: 18px;
  }

  body.nav-open .nav-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    background: var(--color-parchment);
    border-bottom: 1px solid var(--color-ash);
    padding: var(--space-24);
    gap: var(--space-16);
  }

  body.nav-open .nav-links a {
    padding: 8px 0;
  }

  body.nav-open .lang-switch {
    display: inline-flex;
    margin-top: var(--space-8);
  }
}

@media (max-width: 960px) {
  .about-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-40);
  }

  .skills-grid,
  .projects-grid,
  .posts-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .about-portrait {
    max-width: 380px;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  :root {
    --space-80: 56px;
    --space-64: 48px;
  }

  .container {
    padding: 0 16px;
  }

  .navbar-inner {
    height: 68px;
    gap: var(--space-16);
  }

  body.nav-open .nav-links {
    top: 68px;
    max-height: calc(100vh - 68px);
  }

  .logo {
    min-width: 0;
    font-size: var(--text-body);
  }

  .hero {
    padding: var(--space-64) 0;
  }

  .hero .wash {
    width: 280px;
    height: 280px;
    top: -100px;
    right: -100px;
  }

  .hero-title {
    overflow-wrap: anywhere;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
    justify-content: center;
  }

  .h-section {
    font-size: clamp(30px, 9vw, 40px);
    letter-spacing: -0.6px;
    overflow-wrap: anywhere;
  }

  .h-sub {
    font-size: clamp(24px, 7vw, 28px);
  }

  .text-lead {
    font-size: var(--text-label);
  }

  .card {
    padding: var(--space-24);
    border-radius: 28px;
  }

  .about-portrait {
    border-radius: 28px;
  }

  .about-portrait .initials {
    font-size: 72px;
  }

  .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-8);
  }

  .stat-card {
    padding: var(--space-16) 12px;
    border-radius: 20px;
  }

  .stat-number {
    font-size: 28px;
  }

  .stat-label {
    font-size: 10px;
    overflow-wrap: anywhere;
    hyphens: auto;
  }

  .skills-grid,
  .projects-grid,
  .posts-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .skill-pill {
    padding: 8px 12px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    padding: var(--space-24) 0;
  }

  .project-links {
    flex-wrap: wrap;
    gap: 12px 20px;
  }

  .project-cover,
  .post-cover {
    border-radius: 18px;
  }

  .contact-grid {
    gap: var(--space-24);
  }

  .form-input,
  .form-textarea {
    font-size: 16px;
  }

  .btn {
    padding: 14px 24px;
  }

  .footer {
    padding-top: var(--space-40);
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-32);
    margin-bottom: var(--space-40);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .error-code {
    font-size: 96px;
  }
}

@media (max-width: 380px) {
  .h-display {
    font-size: 34px;
    letter-spacing: -1px;
  }

  .lang-switch a {
    padding: 6px 8px;
  }
}