/* ---------------------------------------------
   Custom properties
--------------------------------------------- */
:root {
  --color-bg: #faf9f7;
  --color-bg-alt: #f2efe9;
  --color-ink: #1a1a1a;
  --color-ink-soft: #4a4a4a;
  --color-navy: #1c2b3a;
  --color-navy-soft: #2c3e50;
  --color-brass: #a8895c;
  --color-border: #ddd7cc;

  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --nav-height: 76px;
  --max-width: 1120px;
}

/* ---------------------------------------------
   Reset & base
--------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--color-navy);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 4px;
  z-index: 1000;
  transition: top 0.2s ease;
}

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

/* ---------------------------------------------
   Header / Navigation
--------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 249, 247, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  height: var(--nav-height);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--color-navy);
}

.nav-menu {
  display: flex;
  gap: 2.25rem;
  list-style: none;
}

.nav-menu a {
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--color-ink);
  padding-bottom: 0.2rem;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--color-brass);
  border-bottom-color: var(--color-brass);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-navy);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------------------------------------------
   Buttons
--------------------------------------------- */
.btn {
  display: inline-block;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 0.85rem 1.75rem;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-navy-soft);
}

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

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background-color: var(--color-navy);
  color: #fff;
}

/* ---------------------------------------------
   Hero
--------------------------------------------- */
.hero {
  min-height: 130vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 1.5rem;
  background:
    linear-gradient(180deg, rgba(17, 26, 35, 0.78), rgba(17, 26, 35, 0.85)),
    url("images/talf-image-3.jpg") center / cover no-repeat;
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  max-width: 760px;
  text-align: center;
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-brass);
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.15;
  color: #fff;
  margin-bottom: 1.5rem;
}

.hero-mission {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero .btn-primary {
  background-color: #fff;
  color: var(--color-navy);
}

.hero .btn-primary:hover,
.hero .btn-primary:focus-visible {
  background-color: var(--color-bg-alt);
}

.hero .btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.7);
}

.hero .btn-secondary:hover,
.hero .btn-secondary:focus-visible {
  background-color: #fff;
  color: var(--color-navy);
  border-color: #fff;
}

/* ---------------------------------------------
   Sections (shared)
--------------------------------------------- */
.section {
  padding: 6rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.section:last-of-type {
  border-bottom: none;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  color: var(--color-navy);
  margin-bottom: 1.5rem;
}

.section-lead {
  font-size: 1.1rem;
  color: var(--color-ink-soft);
  max-width: 720px;
  margin-bottom: 1.5rem;
}

.section p {
  max-width: 720px;
  margin-bottom: 1.5rem;
  color: var(--color-ink-soft);
}

/* ---------------------------------------------
   About
--------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-figure {
  position: sticky;
  top: calc(var(--nav-height) + 2rem);
}

.about-figure img {
  width: 100%;
  border: 1px solid var(--color-border);
}

/* ---------------------------------------------
   Contact
--------------------------------------------- */
.section-contact {
  background-color: var(--color-bg-alt);
}

.section-contact .section-lead a {
  color: var(--color-navy);
  border-bottom: 1px solid var(--color-brass);
  text-decoration: none;
}

/* ---------------------------------------------
   Footer
--------------------------------------------- */
.site-footer {
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  background-color: var(--color-navy);
  color: #cfd6dd;
}

/* ---------------------------------------------
   Responsive
--------------------------------------------- */
@media (max-width: 860px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-figure {
    position: static;
    order: -1;
  }
}

@media (max-width: 700px) {
  .nav-menu {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.5rem 1.5rem;
    gap: 1.25rem;
    display: none;
  }

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

  .nav-toggle {
    display: flex;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    text-align: center;
  }

  .section {
    padding: 4rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 3rem 1.25rem;
  }
}

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

  * {
    transition: none !important;
  }
}