/* ============================================================
   DEAN JACKSON PORTFOLIO — style.css
   Executive personal portfolio · Authoritative / Military / Refined
   Color concept: Slate Blue-Gray (authority) + Warm Stone surfaces
   Fonts: Instrument Serif (display) + Work Sans (body)
============================================================ */

/* ============================================================
   1. DESIGN TOKENS
============================================================ */

:root, [data-theme="light"] {

  /* Surfaces — warm stone / off-white */
  --color-bg:             #f6f5f2;
  --color-surface:        #faf9f7;
  --color-surface-2:      #ffffff;
  --color-surface-offset: #edecea;
  --color-surface-offset-2: #e5e4e0;
  --color-divider:        #dcdad6;
  --color-border:         #d0cdc8;

  /* Text — warm near-black */
  --color-text:           #1e1d1a;
  --color-text-muted:     #6b6a66;
  --color-text-faint:     #b0aea9;
  --color-text-inverse:   #f6f5f2;

  /* Primary Accent — slate blue (authoritative, restrained) */
  --color-primary:        #2d5a8e;
  --color-primary-hover:  #1e4470;
  --color-primary-active: #153355;
  --color-primary-highlight: #dae4f0;
  --color-primary-subtle: #edf2f9;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* Transitions */
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(30, 29, 26, 0.06);
  --shadow-md: 0 4px 12px rgba(30, 29, 26, 0.08);
  --shadow-lg: 0 12px 32px rgba(30, 29, 26, 0.10);

  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.375rem);
  --text-xl:   clamp(1.375rem, 1.1rem  + 1.25vw, 2rem);
  --text-2xl:  clamp(1.875rem, 1.2rem  + 2.5vw,  3rem);
  --text-hero: clamp(2.5rem,   1rem    + 5vw,    5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Fonts */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body:    'Work Sans', 'Helvetica Neue', Arial, sans-serif;

  /* Layout */
  --content-narrow:  640px;
  --content-default: 980px;
  --content-wide:    1200px;
  --header-h:        68px;
}

[data-theme="dark"] {
  --color-bg:             #2a2e35;
  --color-surface:        #303540;
  --color-surface-2:      #363c47;
  --color-surface-offset: #282c33;
  --color-surface-offset-2: #252930;
  --color-divider:        #3e4350;
  --color-border:         #474d5c;
  --color-text:           #e8e9ec;
  --color-text-muted:     #9ca3af;
  --color-text-faint:     #6b7280;
  --color-text-inverse:   #1e1d1a;
  --color-primary:        #7eb8e8;
  --color-primary-hover:  #9ecaf0;
  --color-primary-active: #b8d8f5;
  --color-primary-highlight: #1e3552;
  --color-primary-subtle: #1a2d44;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.20);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.28);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.35);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #2a2e35;
    --color-surface:        #303540;
    --color-surface-2:      #363c47;
    --color-surface-offset: #282c33;
    --color-surface-offset-2: #252930;
    --color-divider:        #3e4350;
    --color-border:         #474d5c;
    --color-text:           #e8e9ec;
    --color-text-muted:     #9ca3af;
    --color-text-faint:     #6b7280;
    --color-text-inverse:   #1e1d1a;
    --color-primary:        #7eb8e8;
    --color-primary-hover:  #9ecaf0;
    --color-primary-active: #b8d8f5;
    --color-primary-highlight: #1e3552;
    --color-primary-subtle: #1a2d44;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.20);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.28);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.35);
  }
}

/* ============================================================
   2. BASE RESET
============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--space-8));
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p, li { text-wrap: pretty; max-width: 72ch; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-hover); }
button { cursor: pointer; background: none; border: none; }

::selection { background: var(--color-primary-highlight); color: var(--color-text); }

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

@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;
  }
}

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

/* ============================================================
   3. LAYOUT UTILITIES
============================================================ */

.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-12));
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.section-alt {
  background-color: var(--color-surface);
}

.section-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  max-width: 26ch;
  line-height: 1.1;
}

.section-subtext {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-top: calc(-1 * var(--space-6));
}

/* ============================================================
   4. SKIP LINK
============================================================ */

.skip-link {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 200;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  font-weight: 500;
  transform: translateY(-120%);
  transition: transform var(--transition);
}
.skip-link:focus { transform: translateY(0); }

/* ============================================================
   5. HEADER
============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background-color: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: var(--header-h);
  max-width: var(--content-wide);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  flex-shrink: 0;
}
.logo:hover { color: var(--color-text); }
.logo-bg { fill: var(--color-text); transition: fill var(--transition); }
.logo:hover .logo-bg { fill: var(--color-primary); }

.logo-name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--color-text);
  white-space: nowrap;
}

/* Main nav */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.main-nav a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
}

.main-nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.main-nav a.active {
  color: var(--color-primary);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
.mobile-nav {
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-4) 0;
  box-shadow: var(--shadow-md);
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  list-style: none;
}

.mobile-nav a {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-3) clamp(var(--space-6), 5vw, var(--space-12));
  transition: color var(--transition), background var(--transition);
}
.mobile-nav a:hover { color: var(--color-text); background: var(--color-surface-offset); }

.mobile-resume-btn {
  margin: var(--space-4) clamp(var(--space-6), 5vw, var(--space-12)) var(--space-2);
  display: inline-flex !important;
  width: auto !important;
}

/* ============================================================
   6. BUTTONS
============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary-subtle);
  color: var(--color-primary-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-sm {
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-4);
}

.btn-full { width: 100%; }

/* ============================================================
   7. HERO
============================================================ */

.hero {
  background-color: var(--color-bg);
  padding-block: 0;
}

.hero-inner {
  padding-top: clamp(var(--space-16), 10vw, var(--space-24));
  padding-bottom: clamp(var(--space-12), 6vw, var(--space-20));
  max-width: var(--content-wide);
}

.hero-content {
  max-width: 700px;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.hero-name {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.0;
  margin-bottom: var(--space-6);
  letter-spacing: -0.01em;
}

.hero-summary {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 58ch;
  margin-bottom: var(--space-8);
  font-weight: 400;
}

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

.hero-rule {
  height: 1px;
  background: var(--color-divider);
  margin-top: clamp(var(--space-12), 6vw, var(--space-20));
}

/* Highlights strip */
.highlights-strip {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}

.highlights-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  list-style: none;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.highlight-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-primary);
  margin-top: 2px;
}

.highlight-item > div {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.highlight-item strong {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.highlight-item span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* ============================================================
   8. ABOUT
============================================================ */

.about-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: start;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.about-text .section-heading {
  margin-bottom: var(--space-2);
}

.about-text p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
}

.about-text p:first-of-type {
  color: var(--color-text);
}

/* Sidebar card */
.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: sticky;
  top: calc(var(--header-h) + var(--space-6));
}

.sidebar-card-title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  list-style: none;
}

.sidebar-list li {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.sidebar-list li:last-child { border-bottom: none; }

.sidebar-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sidebar-list span:last-child {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 400;
  max-width: none;
}

.mt-sidebar { margin-top: var(--space-6); }

/* ============================================================
   9. EXPERIENCE
============================================================ */

.exp-themes {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.exp-theme {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
  transition: background var(--transition);
}
.exp-theme:last-child { border-bottom: none; }

.exp-theme-header {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-6) var(--space-8);
  cursor: pointer;
  user-select: none;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-divider);
}
.exp-theme-header:hover { background: var(--color-surface-offset); }

.exp-theme-number {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  min-width: 2rem;
}

.exp-theme-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
}

.exp-theme-body {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.exp-theme-summary {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 72ch;
  padding-left: calc(2rem + var(--space-5));
}

.exp-roles {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding-left: calc(2rem + var(--space-5));
}

.exp-role {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.exp-role-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.exp-role-meta strong {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.exp-role-org {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 500;
}

.exp-role-date {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 400;
}

.exp-role p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 65ch;
}

/* ============================================================
   10. SELECTED WORK
============================================================ */

.case-studies {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.case-study {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.case-study:hover { box-shadow: var(--shadow-md); }

.cs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-6) 0;
}

.cs-tag {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
}

.cs-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  padding: var(--space-3) var(--space-6) var(--space-5);
  line-height: 1.2;
}

.cs-body {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-divider);
}

.cs-section {
  padding: var(--space-5) var(--space-6);
  border-right: 1px solid var(--color-divider);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.cs-section:last-child { border-right: none; }

.cs-section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.cs-section p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: none;
}

/* ============================================================
   11. CERTIFICATIONS
============================================================ */

.creds-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.creds-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.creds-group-title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

.creds-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  list-style: none;
}

.cred-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.cred-item:last-child { border-bottom: none; }

.cred-name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
}

.cred-detail {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

/* ============================================================
   12. AVIATION
============================================================ */

.aviation-section {
  background-color: var(--color-bg);
}

.aviation-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}

.aviation-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.aviation-lead {
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: 1.65;
  max-width: 72ch;
  font-weight: 400;
}

.aviation-text p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 72ch;
}

.aviation-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.avi-pillar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.avi-pillar h4 {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.01em;
  line-height: 1.3;
}

.avi-pillar p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: none;
}

/* ============================================================
   13. CONTACT
============================================================ */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: start;
}

.contact-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 60ch;
  font-weight: 400;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.contact-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.contact-row a,
.contact-row span {
  font-size: var(--text-sm);
  color: var(--color-text);
  max-width: none;
}
.contact-row a:hover { color: var(--color-primary); }

.contact-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.availability-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: sticky;
  top: calc(var(--header-h) + var(--space-6));
}

.availability-title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.availability-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.availability-list li {
  font-size: var(--text-sm);
  color: var(--color-text);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  padding-left: var(--space-4);
  position: relative;
  max-width: none;
}
.availability-list li:last-child { border-bottom: none; }
.availability-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-primary);
}

.clearance-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-highlight);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

/* ============================================================
   14. FOOTER
============================================================ */

.site-footer {
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface);
  padding-block: var(--space-6);
}

.footer-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  max-width: var(--content-wide);
}

.footer-name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.footer-title,
.footer-location {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-sep {
  color: var(--color-text-faint);
  font-size: var(--text-sm);
}

.footer-right {
  margin-left: auto;
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-link:hover { color: var(--color-primary); }

/* ============================================================
   15. SCROLL ANIMATIONS
============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ============================================================
   16. RESPONSIVE
============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .highlights-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .cs-body {
    grid-template-columns: repeat(2, 1fr);
  }
  .cs-section:nth-child(2) { border-right: none; }
  .cs-section:nth-child(3) {
    border-top: 1px solid var(--color-divider);
    border-right: 1px solid var(--color-divider);
  }
  .aviation-pillars {
    grid-template-columns: repeat(2, 1fr);
  }
  .creds-grid {
    grid-template-columns: 1fr;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn-outline { display: none; }

  .about-layout {
    grid-template-columns: 1fr;
  }
  .sidebar-card {
    position: static;
  }

  .exp-role {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  .exp-theme-body {
    padding: var(--space-5);
  }
  .exp-theme-summary,
  .exp-roles {
    padding-left: 0;
  }

  .highlights-list {
    grid-template-columns: 1fr;
  }

  .cs-body {
    grid-template-columns: 1fr;
  }
  .cs-section {
    border-right: none;
    border-top: 1px solid var(--color-divider);
  }
  .cs-section:first-child { border-top: none; }

  .aviation-pillars {
    grid-template-columns: 1fr;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }
  .availability-card {
    position: static;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
  .footer-right {
    margin-left: 0;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: flex-start;
  }

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

@media (max-width: 480px) {
  .exp-theme-header {
    padding: var(--space-5) var(--space-5);
  }
}