/*
  Art direction: Engineered Craft — editorial technical portfolio.
  Palette: warm ivory and graphite, restrained teal for interaction and emphasis.
  Typography: Cormorant Garamond carries editorial personality; Satoshi keeps
  content and interface crisp. Density: spacious in the hero, balanced elsewhere.
*/

:root,
[data-theme="light"] {
  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body: "Satoshi", "Helvetica Neue", Arial, sans-serif;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.75rem, 1.2rem + 1.75vw, 2.75rem);
  --text-2xl: clamp(3rem, 1.3rem + 5vw, 6.4rem);
  --text-hero: clamp(4rem, 1.2rem + 8vw, 9.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --color-bg: #f7f6f2;
  --color-surface: #fbfaf7;
  --color-surface-2: #ffffff;
  --color-offset: #eeece6;
  --color-offset-2: #e5e2da;
  --color-text: #1c1b18;
  --color-muted: #696761;
  --color-faint: #99968e;
  --color-inverse: #f7f6f2;
  --color-border: rgba(28, 27, 24, 0.13);
  --color-border-strong: rgba(28, 27, 24, 0.23);
  --color-primary: #01696f;
  --color-primary-hover: #0c4e54;
  --color-primary-soft: #dce9e7;
  --color-focus: #01696f;

  --shadow-sm: 0 1px 2px rgba(28, 27, 24, 0.06);
  --shadow-md: 0 12px 32px rgba(28, 27, 24, 0.08);

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 999px;

  --content-wide: 78rem;
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --color-bg: #161615;
  --color-surface: #1c1c1a;
  --color-surface-2: #232321;
  --color-offset: #20201e;
  --color-offset-2: #292927;
  --color-text: #efede7;
  --color-muted: #bbb8b0;
  --color-faint: #85827b;
  --color-inverse: #1c1b18;
  --color-border: rgba(239, 237, 231, 0.13);
  --color-border-strong: rgba(239, 237, 231, 0.23);
  --color-primary: #56a6a9;
  --color-primary-hover: #7bc0c2;
  --color-primary-soft: #213939;
  --color-focus: #7bc0c2;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.3);
}

/* Base */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
  text-size-adjust: 100%;
}

body {
  min-height: 100dvh;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

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

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

button {
  cursor: pointer;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  line-height: 1;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-4);
  left: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  color: var(--color-inverse);
  transform: translateY(-200%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* Reusable elements */

.section {
  width: min(100%, var(--content-wide));
  margin-inline: auto;
  padding: clamp(var(--space-16), 8vw, var(--space-32))
    clamp(var(--space-4), 4vw, var(--space-10));
}

.section--offset {
  width: 100%;
  max-width: none;
  background: var(--color-offset);
}

.section--offset > .section-grid,
.section--offset > .project-grid {
  width: min(100%, var(--content-wide));
  margin-inline: auto;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(var(--space-10), 7vw, var(--space-24));
}

.eyebrow {
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.2;
  text-transform: uppercase;
}

.section-intro h2,
.contact-inner h2 {
  max-width: 14ch;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.04em;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 2.75rem;
  padding: var(--space-3) var(--space-5);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 700;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    transform var(--transition);
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0);
}

.button--primary {
  background: var(--color-primary);
  color: var(--color-inverse);
}

.button--primary:hover {
  background: var(--color-primary-hover);
}

.button--secondary {
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.button--secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Header */

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(18px);
  transition: border-color var(--transition);
}

.site-header.is-scrolled {
  border-color: var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, var(--content-wide));
  min-height: 4.75rem;
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-10));
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
}

.brand-monogram {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.12em;
  line-height: 1;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(var(--space-4), 2.4vw, var(--space-8));
}

.site-nav a,
.language-switch {
  position: relative;
  padding-block: var(--space-2);
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--color-primary);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.site-nav a:hover,
.site-nav a.is-active,
.language-switch:hover {
  color: var(--color-text);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.language-switch {
  min-width: 2.75rem;
  text-align: center;
}

.theme-toggle,
.menu-toggle {
  display: inline-grid;
  width: 2.75rem;
  min-width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: transparent;
  transition:
    border-color var(--transition),
    color var(--transition),
    background var(--transition);
}

.theme-toggle:hover,
.menu-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.theme-toggle-icon {
  font-size: 1.25rem;
  line-height: 1;
}

.menu-toggle {
  display: none;
  align-content: center;
  gap: 0.25rem;
}

.menu-toggle > span[aria-hidden="true"] {
  display: block;
  width: 1rem;
  height: 1px;
  background: currentColor;
}

/* Hero */

.hero {
  min-height: min(51rem, calc(100dvh - 4.75rem));
  display: grid;
  align-items: center;
  padding-top: clamp(var(--space-12), 8vw, var(--space-24));
  padding-bottom: clamp(var(--space-16), 10vw, var(--space-32));
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(18rem, 0.92fr);
  align-items: center;
  gap: clamp(var(--space-10), 5vw, var(--space-24));
  width: 100%;
}

.hero-content {
  max-width: 50rem;
}

.hero h1 {
  max-width: 10ch;
  margin-bottom: var(--space-5);
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 600;
  letter-spacing: -0.065em;
}

.hero-role {
  margin-bottom: var(--space-5);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.3;
}

.hero-summary {
  max-width: 58ch;
  color: var(--color-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-top: var(--space-12);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.hero-meta li {
  display: grid;
  gap: var(--space-1);
  font-size: var(--text-sm);
}

.meta-label {
  color: var(--color-faint);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-visual {
  align-self: stretch;
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 29rem;
  overflow: hidden;
  background: var(--color-offset);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 25rem;
  object-fit: cover;
  object-position: center;
}

.hero-visual figcaption {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: var(--text-xs);
}

/* About */

.about-content > p {
  max-width: 62ch;
  font-size: var(--text-lg);
  line-height: 1.55;
}

.about-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6) var(--space-8);
  margin-top: var(--space-12);
}

.about-details div {
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.about-details dt {
  margin-bottom: var(--space-1);
  color: var(--color-faint);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-details dd {
  font-size: var(--text-sm);
  font-weight: 700;
}

/* Skills */

.skills-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.skill-group {
  min-height: 12rem;
  padding: var(--space-6);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.skill-group h3 {
  margin-bottom: var(--space-5);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
}

.skill-group ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-group li {
  padding: 0.32rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  font-size: var(--text-xs);
}

/* Experience */

.timeline {
  position: relative;
}

.timeline::before {
  position: absolute;
  top: 0.4rem;
  bottom: 0.4rem;
  left: 8.1rem;
  width: 1px;
  background: var(--color-border-strong);
  content: "";
}

.timeline-item {
  display: grid;
  grid-template-columns: 7rem 2.25rem minmax(0, 1fr);
  gap: var(--space-3);
  padding-bottom: var(--space-5);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-period {
  padding-top: var(--space-4);
  color: var(--color-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  text-align: right;
}

.timeline-marker {
  position: relative;
  z-index: 1;
  width: 0.75rem;
  height: 0.75rem;
  margin-top: 1.48rem;
  justify-self: center;
  border: 2px solid var(--color-offset);
  border-radius: var(--radius-full);
  background: var(--color-primary);
}

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

.experience-card-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--space-4);
}

.experience-card h3,
.education-item h3,
.project-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.035em;
}

.experience-card-header div > p {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
}

.experience-card-header > span {
  color: var(--color-muted);
  font-size: var(--text-xs);
  white-space: nowrap;
}

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

.experience-highlights {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.experience-highlights li {
  position: relative;
  padding-left: var(--space-4);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.experience-highlights li::before {
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 0.32rem;
  height: 0.32rem;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  content: "";
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.tag-list li {
  color: var(--color-muted);
  font-size: var(--text-xs);
}

.tag-list li:not(:last-child)::after {
  margin-left: var(--space-2);
  color: var(--color-faint);
  content: "·";
}

/* Education */

.education-list {
  display: grid;
  gap: var(--space-5);
}

.education-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(14rem, 0.8fr);
  gap: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.education-period {
  margin-bottom: var(--space-3);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.education-qualification {
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.education-item > p {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

/* Projects */

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.project-card {
  display: flex;
  min-height: 18rem;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
}

.project-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-0.25rem);
}

.project-card--featured {
  grid-column: span 2;
  min-height: 21rem;
  background: var(--color-surface-2);
}

.project-index {
  margin-bottom: var(--space-8);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.project-card h3 {
  margin-bottom: var(--space-3);
}

.project-card-content > p:last-child {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.project-card-footer {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.project-card-footer .tag-list {
  margin-top: 0;
}

.project-card-footer a {
  width: fit-content;
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
}

.project-card-footer a:hover {
  color: var(--color-primary-hover);
}

/* Contact and footer */

.contact {
  display: grid;
  min-height: 34rem;
  place-items: center;
  text-align: center;
}

.contact-inner {
  max-width: 47rem;
}

.contact-inner .eyebrow {
  margin-bottom: var(--space-5);
}

.contact-inner h2 {
  max-width: none;
  font-size: var(--text-2xl);
}

.contact-inner > p:not(.eyebrow) {
  max-width: 53ch;
  margin: var(--space-6) auto 0;
  color: var(--color-muted);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  margin-top: var(--space-10);
}

.contact-email {
  color: var(--color-primary);
  font-size: var(--text-lg);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--color-primary) 40%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

.contact-email:hover {
  color: var(--color-primary-hover);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  width: min(100%, var(--content-wide));
  margin-inline: auto;
  padding: var(--space-6) clamp(var(--space-4), 4vw, var(--space-10));
  border-top: 1px solid var(--color-border);
  color: var(--color-faint);
  font-size: var(--text-xs);
}

/* Reveal animation */

[data-reveal] {
  opacity: 0;
  transform: translateY(1.2rem);
  transition:
    opacity 650ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 650ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */

@media (max-width: 54rem) {
  .section-grid,
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    order: 1;
  }

  .hero-visual {
    order: 0;
    min-height: 22rem;
  }

  .hero h1 {
    max-width: 12ch;
  }

  .section-intro h2 {
    max-width: 20ch;
  }
}

@media (max-width: 44rem) {
  .site-nav {
    position: fixed;
    top: 4.75rem;
    right: var(--space-4);
    left: var(--space-4);
    display: grid;
    gap: 0;
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-0.75rem);
    transition:
      opacity var(--transition),
      transform var(--transition);
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    min-height: 2.75rem;
    padding: var(--space-3);
    border-radius: var(--radius-sm);
  }

  .site-nav a:hover {
    background: var(--color-offset);
  }

  .site-nav a::after {
    display: none;
  }

  .menu-toggle {
    display: grid;
  }

  .language-switch {
    display: inline-grid;
    width: 2.75rem;
    min-width: 2.75rem;
    height: 2.75rem;
    place-items: center;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text);
    font-size: var(--text-xs);
    font-weight: 700;
    line-height: 1;
  }

  .language-switch:hover,
  .language-switch:active {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-offset);
  }

  .timeline::before {
    left: 0.35rem;
  }

  .timeline-item {
    grid-template-columns: 1.25rem minmax(0, 1fr);
    gap: var(--space-3);
  }

  .timeline-period {
    grid-column: 2;
    grid-row: 1;
    padding: 0;
    text-align: left;
  }

  .timeline-marker {
    grid-column: 1;
    grid-row: 1 / span 2;
    margin-top: 0.3rem;
  }

  .experience-card {
    grid-column: 2;
    grid-row: 2;
  }

  .education-item {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

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

  .project-card--featured {
    grid-column: span 1;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 32rem) {
  .header-inner {
    min-height: 4.25rem;
  }

  .hero h1 {
    font-size: var(--text-2xl);
  }

  .hero-visual {
    min-height: 18rem;
  }

  .hero-visual img {
    min-height: 16rem;
  }

  .hero-visual figcaption {
    flex-direction: column;
  }

  .about-details,
  .skills-list {
    grid-template-columns: 1fr;
  }

  .skills-list {
    border-right: 1px solid var(--color-border);
  }

  .skill-group {
    min-height: auto;
    border-right: 0;
  }

  .experience-card-header {
    flex-direction: column;
  }

  .contact-actions {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

.button--text {
  min-height: auto;
  padding: var(--space-3) 0;
  border-color: transparent;
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: color-mix(
    in srgb,
    var(--color-primary) 40%,
    transparent
  );
  text-decoration-thickness: 1px;
  text-underline-offset: 0.24em;
}

.button--text:hover {
  border-color: transparent;
  color: var(--color-primary-hover);
  transform: translateY(-2px);
}

.hero-visual img {
  object-position: 88% center;
}

@media (max-width: 54rem) {
  .hero-visual img {
    object-position: 92% center;
  }
}

@media (max-width: 32rem) {
  .hero-visual img {
    object-position: 90% center;
  }
}