/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-text: #1c1917;
  --color-text-muted: #57534e;
  --color-accent: #1e3a5f;
  --color-accent-light: #2d5a8e;
  --color-accent-bg: #eef3f9;
  --color-border: #e7e5e4;
  --color-gold: #b8860b;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
  --max-width: 1100px;
  --radius: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--color-accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-accent-light); }

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

/* ========== Layout ========== */
.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Header ========== */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 16px;
}

.site-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background .2s, color .2s;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--color-accent-bg);
  color: var(--color-accent);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: .3s;
}

/* ========== Hero ========== */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  color: var(--color-accent);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--color-gold);
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-intro {
  max-width: 720px;
  margin: 0 auto 32px;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== Buttons ========== */
.btn-primary {
  display: inline-block;
  padding: 12px 32px;
  background: var(--color-accent);
  color: #fff !important;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background .2s, transform .15s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-1px);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  transition: background .2s, color .2s;
}

.btn-link:hover {
  background: var(--color-accent);
  color: #fff;
}

/* ========== Sections ========== */
.section {
  padding: 60px 0;
  border-top: 1px solid var(--color-border);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-accent);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.section-body p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.8;
}

.section-body p:last-child { margin-bottom: 0; }

/* ========== Page Header (inner pages) ========== */
.page-header {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--color-accent);
  margin-bottom: 12px;
}

.page-header h1 a,
.section-title a {
  color: inherit;
  text-decoration: none;
}
.page-header h1 a:hover,
.section-title a:hover {
  text-decoration: underline;
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 680px;
}

/* ========== Focus Cards ========== */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.focus-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: box-shadow .2s, transform .15s;
}

.focus-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
  transform: translateY(-2px);
}

.focus-card-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.focus-card-text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== Credential List ========== */
.cred-list {
  list-style: none;
  display: grid;
  gap: 12px;
}

.cred-list li {
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  position: relative;
  padding-left: 36px;
}

.cred-list li::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--color-gold);
  border-radius: 50%;
}

/* ========== Timeline ========== */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-bg);
}

.timeline-item h3 {
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.timeline-item .timeline-org {
  font-size: 0.9rem;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-item p {
  color: var(--color-text-muted);
  font-size: 0.93rem;
  line-height: 1.7;
}

.timeline-item p + p {
  margin-top: 10px;
}

.timeline-office-tag {
  display: inline-block;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 4px 12px;
  border-radius: 4px;
  border-left: 3px solid var(--color-accent);
  margin-bottom: 10px;
  letter-spacing: 0.01em;
}

/* ========== Education Cards ========== */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.edu-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow .2s, transform .15s;
}

.edu-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
  transform: translateY(-2px);
}

.edu-card--highlight {
  border-left: 4px solid var(--color-accent);
  background: var(--color-accent-bg);
}

.edu-degree {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-accent);
  margin-bottom: 2px;
}

.edu-field {
  font-size: 0.93rem;
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: 6px;
}

.edu-school {
  font-size: 0.88rem;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 12px;
}

.edu-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ========== Contact Form ========== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.7;
}

.contact-info a { font-weight: 500; }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color .2s;
  width: 100%;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

.form-group { display: flex; flex-direction: column; gap: 4px; }

/* ========== Subscribe Section ========== */
.subscribe-section {
  padding-bottom: 0;
  border-bottom: none;
}

.subscribe-form {
  width: 100%;
}

.subscribe-input-group {
  display: flex;
  gap: 12px;
  max-width: 460px;
  margin: 0 auto;
}

.subscribe-input-group input[type="email"] {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color .2s;
}

.subscribe-input-group input[type="email"]:focus {
  outline: none;
  border-color: var(--color-accent);
}

.subscribe-btn {
  white-space: nowrap;
  flex-shrink: 0;
}

.subscribe-note {
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  opacity: 0.75;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 768px) {
  .subscribe-input-group {
    flex-direction: column;
  }

  .subscribe-btn {
    width: 100%;
  }
}

/* ========== Footer ========== */
.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

/* ========== External Links ========== */
.external-links {
  display: grid;
  gap: 12px;
}

.external-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color .2s, box-shadow .2s, transform .15s;
}

.external-link:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 12px rgba(0,0,0,.05);
  transform: translateY(-1px);
}

.external-link-label {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-accent);
}

.external-link-url {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ========== Awards Grid (Military) ========== */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

.award-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  position: relative;
  padding-left: 36px;
}

.award-item::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--color-gold);
  border-radius: 50%;
}

.award-name {
  font-weight: 600;
  font-size: 0.93rem;
  color: var(--color-text);
}

.award-detail {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ========== Projects List ========== */
.projects-list {
  display: grid;
  gap: 24px;
}

.project-item {
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
  transition: box-shadow .2s;
}

.project-item:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
}

.project-item h3 {
  font-size: 1.05rem;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.project-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== Mission Cards (Foundation) ========== */
.mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.mission-card {
  padding: 32px 28px;
  background: var(--color-accent-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.mission-card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.mission-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== Approach List (Foundation) ========== */
.approach-list {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.approach-item {
  padding: 24px 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-gold);
}

.approach-item h3 {
  font-size: 1rem;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.approach-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== Article List ========== */
.article-list {
  list-style: none;
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.article-list li {
  padding: 14px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  border-left: 3px solid var(--color-gold);
}

.article-list li a {
  font-weight: 600;
  font-size: 0.93rem;
  color: var(--color-accent);
}

.article-list li a:hover {
  color: var(--color-accent-light);
}

/* ========== Writing Categories ========== */
.writing-category {
  margin-bottom: 32px;
}

.writing-category:last-child {
  margin-bottom: 0;
}

.writing-category-title {
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-gold);
  display: inline-block;
}

/* ========== Card Link ========== */
.card-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent);
}

.card-link:hover {
  color: var(--color-accent-light);
}

/* ========== Footer External Links ========== */
.footer-external {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.footer-external a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.footer-external a:hover { color: var(--color-accent); }

.footer-external a img,
.footer-external a svg {
  width: 24px;
  height: 24px;
  display: block;
  opacity: 0.6;
  transition: opacity .2s;
}

.footer-external a:hover img,
.footer-external a:hover svg {
  opacity: 1;
}

/* ========== Foundation Page Header with Logo ========== */
.page-header-with-logo {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.page-header-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

/* ========== Page Header Subtitle ========== */
.page-header-sub {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ========== Nav Dropdown ========== */
.nav-dropdown {
  position: relative;
}

.nav-dropdown > .nav-dropdown-toggle {
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background .2s, color .2s;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  font-family: var(--font-sans);
  text-decoration: none;
}

.nav-dropdown > .nav-dropdown-toggle::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: 2px;
}

.nav-dropdown:hover > .nav-dropdown-toggle,
.nav-dropdown > .nav-dropdown-toggle.active {
  background: var(--color-accent-bg);
  color: var(--color-accent);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
  min-width: 200px;
  z-index: 100;
  padding: 6px 0;
  margin-top: 4px;
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  display: block;
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background .15s, color .15s;
  white-space: nowrap;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a.active {
  background: var(--color-accent-bg);
  color: var(--color-accent);
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .site-header { flex-direction: column; align-items: flex-start; }

  .nav-toggle { display: block; position: absolute; right: 24px; top: 24px; }

  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 4px;
  }

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

  .nav-links a { padding: 10px 14px; }

  .nav-dropdown { width: 100%; }

  .nav-dropdown > .nav-dropdown-toggle { padding: 10px 14px; width: 100%; font-size: 0.85rem; }

  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    margin-top: 0;
    padding: 0 0 0 16px;
  }

  .nav-dropdown:hover .nav-dropdown-menu { display: block; }

  .nav-dropdown-menu a { padding: 8px 14px; font-size: 0.85rem; }

  .hero { padding: 48px 0 36px; }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

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

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

  .external-link {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .nav-links a { font-size: 0.85rem; padding: 10px 14px; }
}