:root {
  --color-primary: #02689c;
  --color-on-primary: #ffffff;
  --color-accent: #e85d04;
  --color-on-accent: #ffffff;
  --color-background: #d6f0fa;
  --color-background-alt: #eaf7fc;
  --color-surface: #ffffff;
  --color-foreground: #16324a;
  --color-muted: #3a5566;
  --color-border: #9ed2e8;
  --color-footer: #023e5c;
  --color-ring: #02689c;
  --color-viva: #0381c4;
  --font-heading: "Montserrat", sans-serif;
  --font-body: "Lato", sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --radius: 16px;
  --shadow-md: 0 4px 6px rgba(2, 62, 92, 0.1);
  --shadow-lg: 0 12px 28px rgba(2, 62, 92, 0.14);
  --header-h: 4.5rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 220ms;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-foreground);
  background: var(--color-background);
}

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

h1,
h2,
h3,
.brand-name,
.eyebrow,
.hero-role,
.bento-value,
.chip,
.btn {
  font-family: var(--font-heading);
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
}

p {
  margin: 0 0 1em;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1000;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
}

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

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.eyebrow-on-dark {
  color: #d7eef8;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(214, 240, 250, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration) ease, box-shadow var(--duration) ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 0 rgba(2, 62, 92, 0.06);
}

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

.brand {
  text-decoration: none;
  display: grid;
  gap: 0.35rem;
}

.brand-name {
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.95rem;
}

.brand-mark {
  display: block;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-primary) 55%, var(--color-accent) 55%);
}

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
  cursor: pointer;
  position: relative;
  display: grid;
  place-items: center;
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--duration) var(--ease), opacity var(--duration) ease;
}

.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
}

.nav-toggle-bar::before {
  transform: translateY(-7px);
}

.nav-toggle-bar::after {
  transform: translateY(7px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after {
  transform: rotate(-45deg);
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-nav a {
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.site-nav a[data-nav].is-active {
  color: var(--color-accent);
}

.site-nav {
  display: none;
  position: absolute;
  inset: var(--header-h) 0 auto 0;
  background: var(--color-background);
  padding: 1rem 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.site-nav.is-open {
  display: block;
}

.header-cta {
  margin-top: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  touch-action: manipulation;
  transition: transform var(--duration) var(--ease), background-color var(--duration) ease,
    color var(--duration) ease, box-shadow var(--duration) ease, opacity var(--duration) ease;
}

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

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

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

.btn-primary:hover {
  background: #024e75;
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: rgba(2, 104, 156, 0.08);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-on-accent);
  width: 100%;
}

.btn-accent:hover {
  background: #c44e03;
}

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

/* Hero */
.hero {
  padding: 2rem 0 3rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 8vw, 4.6rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 0.4rem;
}

.hero-role {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.role-line {
  width: 2.5rem;
  height: 3px;
  background: var(--color-accent);
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 38rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  transition: color var(--duration) ease, background-color var(--duration) ease, transform var(--duration) var(--ease);
}

.social-links a:hover {
  color: var(--color-accent);
  background: rgba(2, 104, 156, 0.08);
  transform: translateY(-1px);
}

.social-links svg {
  width: 22px;
  height: 22px;
}

.social-links-on-dark a {
  color: var(--color-on-primary);
}

.social-links-on-dark a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.portrait {
  margin: 0;
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 20px 20px 80px 20px;
  background: #b7e4f4;
  box-shadow: var(--shadow-lg);
}

.portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 18%;
}

/* Proof / bento */
.proof {
  padding-bottom: 3rem;
}

.bento {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.bento-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  display: grid;
  gap: 0.35rem;
  align-content: center;
  min-height: 120px;
}

.bento-value {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1;
}

.bento-label {
  color: var(--color-muted);
  font-weight: 700;
}

.bento-icon {
  width: 32px;
  height: 32px;
  color: var(--color-accent);
}

/* About */
.about {
  padding: 3rem 0;
  background: var(--color-background-alt);
}

.about-grid {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.about h2,
.experience h2,
.faq h2,
.contact h2 {
  font-size: clamp(1.75rem, 4vw, 2.6rem);
}

.about-body {
  color: var(--color-muted);
  max-width: 65ch;
}

.focus-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.focus-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) ease;
}

.focus-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.focus-card svg {
  width: 28px;
  height: 28px;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.focus-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.focus-card p {
  color: var(--color-muted);
  margin: 0;
}

/* Experience */
.experience {
  padding: 4rem 0;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2rem;
}

.section-lead {
  color: var(--color-muted);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.chip {
  min-height: 44px;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 2px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  font-weight: 700;
  cursor: pointer;
  transition: background-color var(--duration) ease, color var(--duration) ease;
}

.chip:hover {
  background: rgba(2, 104, 156, 0.08);
}

.chip.is-active,
.chip.is-active:hover {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

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

.timeline::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background: rgba(232, 93, 4, 0.25);
}

.timeline::after {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.4rem;
  width: 2px;
  height: var(--timeline-progress, 0%);
  background: var(--color-accent);
  transform-origin: top;
  pointer-events: none;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 1.1rem 1fr;
  column-gap: 1rem;
}

.timeline-item.will-animate {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 280ms var(--ease), transform 280ms var(--ease);
}

.timeline-item.is-visible {
  opacity: 1;
  transform: none;
}

.timeline-item.is-hidden {
  display: none;
}

.timeline-year {
  grid-column: 2;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--color-accent);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.timeline-dot {
  grid-column: 1;
  grid-row: 1 / span 3;
  width: 12px;
  height: 12px;
  margin-top: 0.35rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(232, 93, 4, 0.18);
  z-index: 1;
}

.timeline-card {
  grid-column: 2;
  background: var(--color-surface);
  border-radius: 12px;
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow-md);
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) ease;
}

.timeline-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.timeline-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.org {
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.8rem;
  color: var(--color-muted);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.timeline-copy {
  margin: 0;
  color: var(--color-muted);
}

.course-groups {
  display: grid;
  gap: 1rem;
  margin-top: 0.25rem;
}

.course-group h4 {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  letter-spacing: 0.02em;
}

.course-group ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--color-muted);
}

.course-group li {
  margin-bottom: 0.2rem;
}

.filter-empty {
  color: var(--color-muted);
  font-weight: 700;
}

/* FAQ */
.faq {
  padding: 3rem 0 4rem;
  background: var(--color-background-alt);
}

.faq-grid {
  display: grid;
  gap: 1.5rem;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq details {
  background: var(--color-surface);
  border-radius: 12px;
  padding: 0.25rem 1.25rem;
  box-shadow: var(--shadow-md);
}

.faq summary {
  min-height: 48px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 700;
  list-style: none;
}

.faq summary::after {
  content: "";
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--duration) var(--ease);
  flex-shrink: 0;
}

.faq details[open] summary::after {
  transform: rotate(-135deg);
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq details p {
  color: var(--color-muted);
  padding-bottom: 1rem;
}

/* Contact */
.contact {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 4rem 0;
}

.contact-grid {
  display: grid;
  gap: 2rem;
}

.contact-intro p {
  color: #d5e6f2;
  max-width: 40ch;
}

.contact-form {
  background: var(--color-surface);
  color: var(--color-foreground);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
  box-shadow: var(--shadow-xl, var(--shadow-lg));
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-weight: 700;
  font-family: var(--font-heading);
}

.field input,
.field textarea {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  border: 1px solid #c5d5e0;
  border-radius: 8px;
  background: #fff;
  color: var(--color-foreground);
}

.field textarea {
  min-height: 140px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(2, 104, 156, 0.18);
  outline: none;
}

.field.is-invalid input,
.field.is-invalid textarea {
  border-color: var(--color-accent);
}

.field-error {
  min-height: 1.25rem;
  margin: 0;
  color: var(--color-accent);
  font-size: 0.875rem;
}

.form-status {
  margin: 0;
  font-weight: 700;
}

.form-status.is-success {
  color: #0f6b3e;
}

.site-footer {
  background: var(--color-footer);
  color: #fff;
  padding: 1.5rem 0;
  text-align: center;
}

.footer-inner {
  display: grid;
  justify-items: center;
  gap: 0.5rem;
}

.footer-inner .social-links {
  margin-top: 0.25rem;
}

.footer-inner p {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.footer-copy {
  font-weight: 400 !important;
  font-size: 0.85rem;
  color: #c9d7e4;
  font-style: normal;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    position: static;
    background: transparent;
    border: 0;
    padding: 0;
    align-items: center;
    gap: 0.5rem;
  }

  .site-nav ul {
    flex-direction: row;
    align-items: center;
  }

  .header-cta {
    margin-top: 0;
  }

  .bento {
    grid-template-columns: repeat(4, 1fr);
  }

  .bento-wide {
    grid-column: span 2;
  }

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

  .timeline-item {
    grid-template-columns: 5rem 1.1rem 1fr;
  }

  .timeline::before,
  .timeline::after {
    left: calc(5rem + 0.35rem);
  }

  .timeline-year {
    grid-column: 1;
    text-align: right;
    padding-right: 0.25rem;
    margin-top: 0.15rem;
  }

  .timeline-dot {
    grid-column: 2;
  }

  .timeline-card {
    grid-column: 3;
  }

  .course-groups {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }

  .faq-grid,
  .about-grid,
  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    min-height: calc(100dvh - var(--header-h));
  }

  .portrait {
    min-height: 560px;
  }

  .focus-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .timeline-item {
    opacity: 1;
    transform: none;
  }
}