:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: rgba(15, 23, 42, 0.12);
  --accent: #2563eb;
  --max-width: 1100px;
  --radius: 14px;
  --shadow: 0 14px 36px rgba(15, 23, 42, 0.08);
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 2.75rem;
  --space-7: 4rem;
  --space-8: 6rem;
}

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

html {
  scroll-behavior: auto;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  font-family:
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Helvetica Neue",
    Arial,
    sans-serif;
  font-size: 17px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
}

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

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid #7ba3f0;
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 999;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding: clamp(3.5rem, 6vw, 7rem) 0;
  border-top: 1px solid var(--line);
}

.section:first-of-type {
  border-top: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 250, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 4.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.brand {
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.96rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 120ms ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.hero {
  position: relative;
  min-height: min(92vh, 900px);
  display: grid;
  align-items: center;
  background:
    linear-gradient(to right, rgba(15, 23, 42, 0.6), rgba(15, 23, 42, 0.08)),
    radial-gradient(
      circle at 10% 10%,
      rgba(37, 99, 235, 0.13),
      rgba(37, 99, 235, 0) 55%
    ),
    var(--bg);
}

.hero-content {
  width: min(100% - 2rem, 980px);
}

.eyebrow {
  margin: 0 0 var(--space-4);
  color: #e6ecf8;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Garamond,
    "Times New Roman", serif;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

h1 {
  font-size: clamp(2.35rem, 6.2vw, 4.35rem);
  color: #fff;
  max-width: 15ch;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.25rem);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: clamp(1.35rem, 2.4vw, 1.65rem);
}

.subheadline {
  margin: var(--space-4) 0 0;
  font-size: clamp(1.12rem, 2.3vw, 1.48rem);
  color: #e4eaf7;
  font-weight: 500;
}

.hero-support {
  margin: var(--space-4) 0 0;
  max-width: 66ch;
  color: #d0daec;
}

.hero-actions {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.82rem 1.2rem;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-secondary {
  background: transparent;
  border-color: #93b2ef;
  color: var(--text);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.6);
}

.is-hidden {
  display: none;
}

.hero-links {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  color: #d5dff3;
}

.hero-links a,
.link-button {
  font-size: 0.95rem;
  text-decoration: none;
  border: 0;
  padding: 0;
  color: inherit;
  background: none;
  cursor: pointer;
}

.hero-links a:hover,
.link-button:hover {
  color: #fff;
  text-decoration: underline;
}

.scroll-indicator {
  margin-top: var(--space-6);
  display: inline-block;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: #d5dff3;
}

.section-intro,
.section-head p {
  max-width: 70ch;
  color: var(--muted);
}

.about-grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

.about-photo-wrap {
  margin: 0;
  max-width: 320px;
}

.about-photo {
  width: 100%;
  height: auto;
  object-position: center top;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.value-list {
  margin: var(--space-4) 0 0;
  padding-left: 1.2rem;
}

.value-list li {
  margin-bottom: var(--space-2);
}

.section-head {
  margin-bottom: var(--space-5);
}

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

.filter-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.85rem;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
}

.filter-btn.active,
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.timeline {
  display: grid;
  gap: var(--space-4);
}

.role-card,
.project-card,
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-5);
}

.role-card {
  position: relative;
}

.role-head {
  margin-bottom: var(--space-4);
}

.role-company,
.role-dates {
  margin: var(--space-1) 0 0;
  color: var(--muted);
}

.role-card ul {
  margin: 0;
  padding-left: 1.15rem;
}

.role-card li {
  margin-bottom: var(--space-2);
}

.tags {
  margin: var(--space-4) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tags span {
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid var(--line);
}

.portfolio-grid {
  display: grid;
  gap: var(--space-4);
}

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

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

.contact-card p {
  margin: var(--space-2) 0;
}

.contact-card .btn {
  margin-top: var(--space-4);
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  background: var(--text);
  color: #fff;
  border-radius: 8px;
  padding: 0.55rem 0.8rem;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity 120ms ease,
    transform 120ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

[data-filter-item].is-filtered-out {
  display: none;
}

@media (min-width: 860px) {
  .about-grid {
    grid-template-columns: 320px 1fr;
  }

  .portfolio-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  body {
    font-size: 16px;
  }

  .header-inner {
    flex-direction: column;
    justify-content: center;
    padding: 0.75rem 0;
  }

  .site-nav {
    justify-content: center;
    gap: 1.1rem;
  }

  .role-card,
  .project-card,
  .contact-card {
    padding: var(--space-4);
  }
}

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