/* =========================================================
   Dickon Gray — Portfolio 2026
   Design tokens translated directly from ProtfolioMay26.pdf
   ========================================================= */

:root {
  /* Colour */
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-tint: #eeebe5;
  --color-ink: #1d1d1f;
  --color-body: #414146;
  --color-muted: #6e6e73;
  --color-border: #dcdcdf;
  --color-accent: #1b4ed7;
  --color-accent-border: rgba(27, 78, 215, 0.35);
  --color-focus: #1b4ed7;

  /* Typography — Helvetica Neue is the PDF's actual typeface;
     the stack falls back gracefully where it isn't installed. */
  --font-display: "Helvetica Neue", Helvetica, Arial, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;

  --fs-name: clamp(3rem, 3.5rem + 6vw, 8.5rem);
  --fs-h2: clamp(2.1rem, 1.8rem + 2.6vw, 3.75rem);
  --fs-case-headline: clamp(1.9rem, 1.5rem + 3vw, 3.5rem);
  --fs-stat: clamp(2.25rem, 1.9rem + 2vw, 3.25rem);
  --fs-subhead: clamp(1.4rem, 1.2rem + 1.2vw, 2rem);
  --fs-body-lg: clamp(1.05rem, 0.98rem + 0.4vw, 1.25rem);
  --fs-body: 1rem;
  --fs-small: 0.9rem;
  --fs-label: 0.78rem;

  /* Spacing */
  --space-section: clamp(2.5rem, 2rem + 3.5vw, 5rem);
  --space-block: clamp(1.5rem, 1.2rem + 1.5vw, 2.75rem);
  --gap: clamp(1rem, 0.7rem + 1.2vw, 2rem);

  /* Layout */
  --content-max: 1400px;
  --side-pad: clamp(1.25rem, 1rem + 4vw, 7.5rem);
  --radius: 14px;
  --radius-sm: 8px;
  --header-h: 64px;

  /* Motion */
  --transition: 160ms ease;
}

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

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

html {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-body);
  font-family: var(--font-display);
  font-size: var(--fs-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

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

dl,
dd {
  margin: 0;
}

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

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

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

/* ---------- Skip link ---------- */

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--color-ink);
  color: var(--color-bg);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 1rem;
}

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

.wrap {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--side-pad);
}

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

.section--intro {
  padding-top: calc(var(--space-section) + 50px);
  padding-bottom: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
}

@media (min-width: 961px) {
  .section--intro {
    padding-top: calc(var(--space-section) + 50px + 14vh);
  }
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--gap);
  padding-bottom: clamp(1rem, 0.8rem + 1vw, 1.5rem);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-block);
  flex-wrap: wrap;
}

.section-head h2 {
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

.kicker {
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.kicker strong {
  color: var(--color-ink);
  font-weight: 700;
}

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

/* ---------- Site header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: saturate(180%) blur(6px);
  transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
  .site-header {
    transition: transform 220ms ease;
  }
}

.site-header--hidden {
  transform: translateY(-100%);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 1rem;
}

.brand {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  text-decoration: none;
}

.header-links {
  display: flex;
  gap: clamp(1rem, 0.8rem + 1vw, 2rem);
}

.header-links a {
  font-size: var(--fs-small);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-body);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
  padding-bottom: 2px;
}

.header-links a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* ---------- Introduction ---------- */

.intro-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: clamp(2rem, 1rem + 5vw, 6rem);
  align-items: stretch;
  margin-bottom: clamp(1rem, 0.8rem + 1vw, 1.75rem);
}

.intro-left {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.intro-name {
  font-size: var(--fs-name);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.02em;
  transform: translateY(-0.09em);
}

.intro-tagline {
  font-size: var(--fs-subhead);
  font-weight: 400;
  color: var(--color-body);
  max-width: 30ch;
}

.intro-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 1.5em;
}

.intro-copy p {
  font-size: var(--fs-body-lg);
  color: var(--color-body);
}

/* ---------- Leadership grid ---------- */

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.principle {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  background: var(--color-surface);
}

.principle--accent {
  border-color: var(--color-accent);
  border-width: 2px;
}

.principle--tint {
  background: var(--color-tint);
  border-color: transparent;
}

.principle-number {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.9rem;
}

.principle h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 0.6rem;
}

.principle p {
  font-size: 0.98rem;
  color: var(--color-body);
}

/* ---------- Selected outcomes ---------- */

.outcomes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
}

.outcome-col {
  display: grid;
  gap: var(--gap);
}

.metric {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  background: var(--color-surface);
}

.metric--accent {
  border-color: var(--color-accent);
  border-width: 2px;
}

.metric--tint {
  background: var(--color-tint);
  border-color: transparent;
}

.metric h3 {
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.75rem;
}

.metric-stat {
  display: block;
  font-size: var(--fs-stat);
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.1;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.metric-stat .arrow {
  color: var(--color-muted);
  font-weight: 400;
  margin-inline: 0.15em;
}

.metric-stat .to {
  color: var(--color-accent);
}

.metric-stat .unit {
  font-size: 0.42em;
  font-weight: 500;
  color: var(--color-body);
  margin-left: 0.3em;
  letter-spacing: 0;
}

.metric p {
  font-size: 0.98rem;
  color: var(--color-body);
}

/* ---------- Case study ---------- */

.case-headline {
  font-size: clamp(1.75rem, 1.5rem + 1.5vw, 2.75rem);
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: -0.01em;
  max-width: 22ch;
  margin-bottom: clamp(1.75rem, 1.5rem + 2vw, 3rem);
}

.case-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem) var(--gap);
  padding-top: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
  border-top: 1px solid var(--color-border);
}

.case-intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--gap);
  align-items: start;
}

.case-facts dt {
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

.case-facts dd {
  font-size: 1.05rem;
  color: var(--color-ink);
}

.panel {
  border-radius: var(--radius);
  padding: clamp(1.75rem, 1.4rem + 1.5vw, 2.5rem);
}

.panel--tint {
  background: var(--color-tint);
}

.panel--outline {
  border: 2px solid var(--color-accent);
}

.panel--plain {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.panel h3 {
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 1rem;
}

.panel p {
  color: var(--color-ink);
  font-size: 1rem;
}

.panel p + p {
  margin-top: 1em;
}

.case-block + .case-block {
  margin-top: var(--space-block);
}

.case-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-items: start;
}

.decision-list {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.5rem;
}

.decision-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
}

.decision-number {
  font-weight: 700;
  color: var(--color-accent);
}

.decision-list h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-ink);
  margin: 0 0 0.35rem;
}

.decision-list p {
  font-size: 0.98rem;
  color: var(--color-body);
  margin: 0;
}

.decision-list p + p {
  margin-top: 0.75em;
}

/* ---------- Visual outputs ---------- */

.visual-outputs .section-head {
  margin-bottom: clamp(1.5rem, 1.2rem + 1vw, 2rem);
}

.visual-outputs-intro {
  font-size: var(--fs-body-lg);
  color: var(--color-body);
  max-width: 60ch;
  margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem);
}

#experience .section-head {
  margin-bottom: 0;
}

.visual-grid {
  display: grid;
  gap: var(--gap);
  align-items: start;
}

.visual-grid--cols3 {
  display: flex;
  gap: var(--gap);
}

.visual-grid--cols3 > .vo-composite {
  flex: 1;
}

.visual-group + .visual-split,
.visual-split + .visual-group,
.visual-group + .visual-group {
  margin-top: var(--gap);
}

/* second composition — mirrors PDF page 7, two columns sharing equal height */
.visual-split {
  display: flex;
  gap: var(--gap);
  align-items: stretch;
}

.visual-split > .vo-composite:nth-child(1) {
  flex-grow: 1.3872;
  flex-basis: 0%;
  aspect-ratio: 1476 / 1064;
}

.visual-split > .vo-composite:nth-child(2) {
  flex-grow: 0.9186;
  flex-basis: 0%;
  aspect-ratio: 970 / 1056;
}

.visual-split > .vo-composite img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.vo-composite {
  min-width: 0;
  overflow: hidden;
}

.vo-composite img {
  width: 100%;
  height: auto;
  display: block;
}

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

.timeline {
  display: grid;
}

.timeline-row {
  display: grid;
  grid-template-columns: minmax(9rem, 0.7fr) minmax(10rem, 0.9fr) 2fr auto;
  gap: var(--gap);
  align-items: baseline;
  padding-block: clamp(1.5rem, 1.2rem + 1vw, 2.25rem);
  border-bottom: 1px solid var(--color-border);
}

.timeline-date {
  font-weight: 700;
  color: var(--color-ink);
  font-size: 1.05rem;
}

.timeline-org {
  font-weight: 700;
  color: var(--color-ink);
  font-size: 1.15rem;
}

.timeline-role p {
  color: var(--color-body);
}

.timeline-role strong {
  color: var(--color-ink);
}

.timeline-tag {
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  text-align: right;
  white-space: nowrap;
}

.earlier-career {
  margin-top: var(--gap);
  display: grid;
  grid-template-columns: minmax(9rem, 0.7fr) 1fr;
  gap: var(--gap);
  align-items: start;
}

.earlier-career h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-ink);
}

.earlier-career p {
  color: var(--color-ink);
}

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

.contact-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-ink);
  margin-top: clamp(2.5rem, 2rem + 4vw, 5.5rem);
  gap: 1rem;
  flex-wrap: wrap;
}

.contact-header .brand-label {
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 1.5rem + 3vw, 5rem);
  align-items: end;
}

.contact-statement {
  font-size: var(--fs-case-headline);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  max-width: 22ch;
}

.contact-statement .accent {
  color: var(--color-accent);
}

.contact-intro {
  margin-top: clamp(1.25rem, 1rem + 1vw, 1.75rem);
  font-size: var(--fs-body-lg);
  color: var(--color-body);
  max-width: 42ch;
}

.contact-note {
  margin-top: 1.5rem;
  font-size: var(--fs-small);
  color: var(--color-muted);
}

.contact-details {
  display: grid;
}

.contact-details > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.1rem;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.contact-details > div:last-child {
  border-bottom: 1px solid var(--color-border);
}

.contact-details dt {
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.contact-details dd {
  font-size: 1.05rem;
  color: var(--color-ink);
}

.contact-details a {
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent-border);
  color: var(--color-ink);
  transition: border-color var(--transition), color var(--transition);
}

.contact-details a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* =========================================================
   Responsive — tablet
   ========================================================= */

@media (max-width: 960px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: start;
  }

  .principle-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .case-columns,
  .case-intro-grid {
    grid-template-columns: 1fr;
  }

  .visual-grid--cols3 {
    flex-direction: column;
  }

  .visual-split {
    flex-direction: column;
  }

  .visual-split > .vo-composite:nth-child(1),
  .visual-split > .vo-composite:nth-child(2) {
    flex-grow: 0;
    flex-basis: auto;
    aspect-ratio: auto;
  }

  .visual-split > .vo-composite img {
    height: auto;
    object-fit: initial;
  }

  .timeline-row {
    grid-template-columns: minmax(8rem, 0.6fr) 1fr auto;
  }

  .timeline-role {
    grid-column: 1 / -1;
    order: 3;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .contact-statement {
    max-width: none;
  }
}

/* =========================================================
   Responsive — mobile
   ========================================================= */

@media (max-width: 640px) {
  :root {
    --header-h: 56px;
  }

  .header-links {
    gap: 1rem;
  }

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

  .case-facts {
    grid-template-columns: 1fr 1fr;
  }

  .timeline-row {
    grid-template-columns: 1fr auto;
    row-gap: 0.5rem;
  }

  .timeline-org {
    grid-column: 1 / -1;
  }

  .timeline-role {
    grid-column: 1 / -1;
    order: 3;
  }

  .earlier-career {
    grid-template-columns: 1fr;
  }

  .contact-details > div {
    flex-direction: column;
    gap: 0.3rem;
  }
}