/* Greg Duncan — portfolio site
   Modernist design system (light variant, navy accent override) */

@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@400;600;700&display=swap");

:root {
  /* Color */
  --color-bg: #f3f2f2;
  --color-text: #201e1d;
  --color-divider: #d6d3d1;

  --color-accent: #1a4d8f;
  --color-accent-100: #eaf1fb;
  --color-accent-200: #cfe0f5;
  --color-accent-300: #a3c5ec;
  --color-accent-400: #6ea3de;
  --color-accent-500: #3d7dcb;
  --color-accent-600: #205fab;
  --color-accent-700: #164a87;
  --color-accent-800: #113967;
  --color-accent-900: #0b2545;

  /* Type */
  --font-heading: "Archivo", system-ui, sans-serif;
  --font-body: "Archivo", system-ui, sans-serif;
  --font-heading-weight: 700;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 56px;
  --space-8: 64px;
}

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

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.5;
}

h1,
h2,
h3 {
  font-family: var(--font-heading);
  font-weight: 400;
  margin: 0 0 var(--space-3);
  line-height: 1.25;
}

h1 {
  font-size: 36px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 19px;
}

p {
  margin: 0 0 var(--space-4);
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 0;
}

a {
  color: var(--color-accent-700);
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: -9999px;
  z-index: 100;
  background: var(--color-accent-900);
  color: var(--color-bg);
  padding: 12px 20px;
  font-size: 15px;
  text-decoration: none;
}

.skip-link:focus {
  position: fixed;
  left: 8px;
  top: 8px;
}

/* Nav */
.site-header {
  border-bottom: 2px solid var(--color-divider);
  background: var(--color-bg);
}

.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
  row-gap: 6px;
  padding: 20px var(--space-4);
  padding-right: 160px;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-brand {
  font-size: 22px;
  text-decoration: none;
  color: inherit;
  font-family: var(--font-heading);
}

.nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
  row-gap: 6px;
}

.nav a:not(.nav-brand) {
  text-decoration: none;
  color: var(--color-text);
  font-size: 15px;
}

.nav a:not(.nav-brand):hover {
  color: var(--color-accent-700);
}

.resume-button-wrap {
  position: fixed;
  top: 14px;
  right: 16px;
  z-index: 50;
}

/* Nav toggle (mobile) */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-left: auto;
  background: transparent;
  border: 2px solid var(--color-text);
  padding: 0;
  cursor: pointer;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
}

.nav-toggle-icon {
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

/* Buttons */
.btn {
  display: inline-block;
  border: 2px solid var(--color-accent);
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-accent-800);
  border-color: var(--color-accent-800);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent-700);
}

.btn-secondary:hover {
  background: var(--color-accent-100);
}

/* Layout helpers */
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.page {
  max-width: 900px;
  margin: 0 auto;
  padding: 64px var(--space-4) var(--space-8);
}

.eyebrow {
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--color-accent-700);
  font-weight: 600;
  margin: 0 0 var(--space-2);
}

.section-kicker {
  font-size: 17px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-700);
  margin-bottom: var(--space-4);
}

/* Stat strip (home) */
.stat-strip {
  display: flex;
  flex-wrap: wrap;
  border-top: 2px solid var(--color-divider);
  border-bottom: 2px solid var(--color-divider);
}

.stat-strip .stat {
  flex: 1 1 220px;
  padding: var(--space-6) var(--space-4);
}

.stat-number {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 56px;
  line-height: 1;
  margin: 0 0 var(--space-2);
  color: var(--color-accent-700);
}

.stat-label {
  margin: 0;
  font-size: 15px;
  max-width: 32ch;
}

/* Cards */
.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-decoration: none;
  color: inherit;
}

.card.elev-sm {
  background: transparent;
}

.card-kicker {
  font-size: 15px;
  color: var(--color-accent-700);
  font-weight: 600;
}

.card-title {
  font-size: 22px;
  font-weight: 400;
  font-family: var(--font-heading);
}

.card-list .card-title,
.card-index .card-title {
  font-size: 26px;
  text-decoration: underline;
  text-decoration-color: var(--color-accent-700);
  text-underline-offset: 4px;
}

.card-body {
  font-size: 17px;
  margin: 0;
}

.card-meta {
  color: var(--color-accent-700);
  font-weight: 700;
  font-size: 16px;
}

.card-index .card-meta {
  font-weight: 400;
  font-size: 15px;
}

.explore-cards {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.explore-cards .card {
  flex: 1 1 260px;
  padding: var(--space-3);
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  max-width: 900px;
}

.card-list .card {
  padding: var(--space-5);
}

/* Case study title plate */
.title-plate {
  background: var(--color-accent-900);
  margin: 0 calc(-1 * var(--space-4)) var(--space-4);
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.title-plate-eyebrow {
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-bg);
  opacity: 0.7;
}

.title-plate-heading {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 30px;
  line-height: 1.25;
  color: var(--color-bg);
  max-width: 28ch;
  margin: 0;
}

.title-plate-sub {
  font-size: 17px;
  color: var(--color-bg);
  opacity: 0.75;
  max-width: 44ch;
}

.skills-line {
  font-size: 15px;
  margin: var(--space-4) 0 var(--space-6);
  opacity: 0.7;
  max-width: 70ch;
}

.back-link {
  font-size: 14px;
}

/* Case study sections */
.case-section {
  padding: var(--space-6) 0;
  border-top: 2px solid var(--color-divider);
}

.case-section h2 {
  color: var(--color-accent-700);
  font-size: 22px;
}

.case-section p,
.case-section ul {
  max-width: 64ch;
  font-size: 17px;
}

.case-section ul {
  padding-left: 1.2em;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.framing-note {
  max-width: 64ch;
  font-size: 17px;
  font-style: italic;
  opacity: 0.85;
}

/* Embedded stat callout inside case-study body */
.stat-callout {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-6) 0;
  border-top: 2px solid var(--color-divider);
}

.stat-callout .stat-figure {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 88px;
  line-height: 1;
  color: var(--color-accent-700);
}

.stat-callout .stat-figure.small {
  font-size: 56px;
  line-height: 0.95;
}

.stat-callout .stat-desc {
  font-size: 19px;
  max-width: 32ch;
}

/* Pull quote */
.pull-quote {
  font-size: 17px;
  max-width: 64ch;
  padding: var(--space-6);
  border-top: 2px solid var(--color-accent-700);
  border-bottom: 2px solid var(--color-accent-700);
  margin: 0;
}

.pull-quote p {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 30px;
  line-height: 1.2;
  color: var(--color-accent-700);
  margin: 0 0 var(--space-3);
}

.pull-quote footer {
  font-size: 15px;
  font-style: normal;
  opacity: 0.85;
}

/* Newsletter mock (TeachingTravel) */
.newsletter-mock {
  max-width: 520px;
  margin: var(--space-8) 0;
  padding: 0 var(--space-2);
}

.newsletter-mock .tear {
  height: 10px;
  background-image: repeating-linear-gradient(
    -45deg,
    var(--color-divider) 0 3px,
    transparent 3px 7px
  );
}

.newsletter-mock .sheet {
  border-left: 2px solid var(--color-divider);
  border-right: 2px solid var(--color-divider);
  padding: var(--space-4);
}

.newsletter-mock .meta {
  font-size: 11px;
  opacity: 0.6;
  margin: 0 0 var(--space-1);
}

.newsletter-mock h3.title {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 19px;
  margin: 0 0 var(--space-2);
}

.newsletter-mock .personalized {
  font-size: 12px;
  margin: 0 0 var(--space-3);
}

.redacted {
  background: #111;
  color: #111;
  border-radius: 3px;
  padding: 0 6px;
  filter: blur(3px);
  user-select: none;
}

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

.newsletter-mock .alert-heading {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 14px;
  color: #b8860b;
  margin: 0 0 var(--space-2);
  display: flex;
  align-items: center;
  gap: 6px;
}

.newsletter-mock .alert-icon {
  position: relative;
  display: inline-flex;
  width: 16px;
  height: 16px;
  align-items: center;
  justify-content: center;
}

.newsletter-mock .item {
  font-size: 12px;
  line-height: 1.45;
  margin: 0 0 var(--space-2);
  color: var(--color-text);
}

.newsletter-mock .item:last-child {
  margin-bottom: 0;
}

.newsletter-mock .item em {
  opacity: 0.7;
  font-style: italic;
}

/* Before/after image pairs (DFI) */
.image-pair {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.image-pair figure {
  flex: 1 1 260px;
  margin: 0;
}

.image-pair img {
  width: 100%;
  border: 1px solid var(--color-divider);
  display: block;
}

.image-pair figcaption {
  font-size: 13px;
  opacity: 0.7;
  margin-top: var(--space-2);
}

/* About page */
.about-portrait {
  width: 200px;
  flex: 0 0 200px;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.about-portrait img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}

.about-intro {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

.about-intro .about-lede {
  flex: 1 1 320px;
  min-width: 280px;
  max-width: 70ch;
}

.about-body p {
  font-size: 17px;
  max-width: 70ch;
  margin-top: var(--space-4);
}

.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

.tag {
  display: inline-block;
  border: 2px solid var(--color-divider);
  padding: 6px 12px;
  font-size: 14px;
  border-radius: 0;
}

.tag-neutral {
  background: transparent;
  color: var(--color-text);
}

/* Footer */
.site-footer {
  padding: var(--space-8) var(--space-4);
  font-size: 14px;
  opacity: 0.7;
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: space-between;
  border-top: 2px solid var(--color-divider);
  max-width: 1200px;
  margin: 0 auto;
}

.site-footer a {
  color: inherit;
}

/* Hero (home) */
.hero {
  padding: 64px var(--space-4) var(--space-8);
  max-width: 1200px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 36px;
  max-width: 44ch;
  line-height: 1.25;
  font-weight: 400;
}

.hero-sub {
  font-size: 19px;
  max-width: 56ch;
  opacity: 0.85;
}

.hero-ctas {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

@media (max-width: 700px) {
  .nav {
    padding-right: var(--space-4);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: var(--space-3);
    border-top: 2px solid var(--color-divider);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a:not(.nav-brand) {
    padding: 14px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--color-divider);
  }

  .resume-button-wrap {
    position: static;
    margin: 0 var(--space-4) var(--space-3);
  }

  .stat-callout .stat-figure {
    font-size: 56px;
  }

  .hero h1 {
    font-size: 26px;
  }
}