/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Color palette */
  --summit-navy:   #0B2A4A;
  --glacier-white: #F4F1EA;
  --beacon-rust:   #C04A2B;
  --basecamp-tan:  #A47148;
  --alpine-blue:   #466B8A;
  --glacier-blue:  #B8CAD9;
  --slate-ink:     #1C1C1E;
  --mist-grey:     #D9DCE1;
  --tone-shift:    #EDE9DF;

  /* Typography */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'Inter', system-ui, sans-serif;

  /* Layout */
  --container-max: 1120px;
  --container-pad: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--glacier-white);
  color: var(--slate-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ============================================================
   LAYOUT UTILITY
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--summit-navy);
  line-height: 1.1;
  font-size: clamp(38px, 6vw, 68px);
}

h2 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--summit-navy);
  font-size: clamp(26px, 3.5vw, 40px);
  line-height: 1.2;
  margin-top: 12px;
  margin-bottom: 48px;
}

h3 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--summit-navy);
  font-size: 22px;
  line-height: 1.25;
  margin-bottom: 12px;
}

p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate-ink);
}

/* Eyebrow labels */
.eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-variant: small-caps;
  color: var(--basecamp-tan);
  margin-bottom: 10px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  padding: 12px 24px;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--summit-navy);
  color: var(--glacier-white);
  border: 2px solid var(--summit-navy);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--alpine-blue);
  border-color: var(--alpine-blue);
}

.btn-nav {
  background-color: var(--summit-navy);
  color: var(--glacier-white);
  border: 2px solid var(--summit-navy);
}

.btn-nav:hover,
.btn-nav:focus-visible {
  background-color: var(--alpine-blue);
  border-color: var(--alpine-blue);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--glacier-white);
  border-bottom: 1px solid var(--mist-grey);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 40px;
  min-height: 160px;
  padding-block: 8px;
}

.nav-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.nav-logo img {
  height: 150px;
  width: auto;
  max-width: 340px;
}

.nav-links {
  display: flex;
  gap: 32px;
  flex: 1;
}

.nav-links a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  color: var(--summit-navy);
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--beacon-rust);
  transition: width 0.2s ease;
}

.nav-links a:hover {
  color: var(--beacon-rust);
}

.nav-links a:hover::after {
  width: 100%;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--summit-navy);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

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

/* Mobile nav */
.mobile-nav {
  background-color: var(--glacier-white);
  border-top: 1px solid var(--mist-grey);
  padding: 16px 0 24px;
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-inline: var(--container-pad);
}

.mobile-nav a {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  color: var(--summit-navy);
  padding: 10px 0;
  border-bottom: 1px solid var(--mist-grey);
  transition: color 0.2s ease;
}

.mobile-nav a:hover {
  color: var(--beacon-rust);
}

.mobile-nav .btn-nav {
  margin-top: 12px;
  width: 100%;
  text-align: center;
  border-bottom: none;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background-color: var(--glacier-white);
  padding-top: 120px;
  padding-bottom: 100px;
}

.hero h1 {
  max-width: 760px;
  margin-bottom: 28px;
}

.hero-sub {
  font-size: 17px;
  color: var(--alpine-blue);
  max-width: 620px;
  line-height: 1.7;
  margin-bottom: 40px;
}

/* ============================================================
   WHAT WE DO
   ============================================================ */
.what-we-do {
  background-color: var(--glacier-white);
  padding-block: 100px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background-color: var(--glacier-white);
  border: 1px solid var(--mist-grey);
  border-radius: 6px;
  padding: 32px 28px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--alpine-blue);
  box-shadow: 0 4px 16px rgba(11, 42, 74, 0.08);
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  color: var(--slate-ink);
}

/* ============================================================
   WHO WE SERVE
   ============================================================ */
.who-we-serve {
  background-color: var(--tone-shift);
  padding-block: 100px;
}

.pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.pill {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--summit-navy);
  background-color: var(--glacier-white);
  border: 1px solid var(--alpine-blue);
  border-radius: 40px;
  padding: 18px 24px;
  text-align: center;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.pill:hover {
  background-color: var(--glacier-blue);
  border-color: var(--summit-navy);
}

/* ============================================================
   FLAGSHIP OFFERS
   ============================================================ */
.offers {
  background-color: var(--glacier-white);
  padding-block: 100px;
}

.offers-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.offer-card {
  padding: 32px 28px;
  border-left: 3px solid var(--basecamp-tan);
  background-color: var(--glacier-white);
  transition: background-color 0.2s ease;
}

.offer-card:hover {
  background-color: var(--tone-shift);
}

.offer-card h3 {
  margin-bottom: 12px;
}

.offer-card p {
  color: var(--slate-ink);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background-color: var(--tone-shift);
  padding-block: 100px;
}

.about-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 72px;
  align-items: start;
}

.about-left h2 {
  margin-bottom: 28px;
}

.about-left p {
  color: var(--slate-ink);
  margin-bottom: 20px;
}

.about-left p:last-child {
  margin-bottom: 0;
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.person-block h3 {
  font-size: 20px;
  margin-bottom: 4px;
}

.role-label {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-variant: small-caps;
  color: var(--basecamp-tan);
  margin-bottom: 10px;
}

.person-block p:last-child {
  font-size: 14px;
  color: var(--alpine-blue);
  margin-top: 8px;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  background-color: var(--summit-navy);
  padding-block: 100px;
}

.contact .eyebrow-contact {
  color: var(--basecamp-tan);
}

.contact h2 {
  color: var(--glacier-white);
  margin-bottom: 20px;
}

.contact-lede {
  color: var(--glacier-blue);
  font-size: 16px;
  max-width: 560px;
  margin-bottom: 40px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: center;
}

.contact-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  color: var(--glacier-white);
  text-decoration: underline;
  text-decoration-color: var(--basecamp-tan);
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.contact-link:hover {
  color: var(--basecamp-tan);
}

/* ============================================================
   CONTACT FORM
   ============================================================ */
.contact-form {
  max-width: 640px;
  margin-bottom: 40px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row--half {
  flex-direction: row;
  gap: 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 8px;
}

.form-field label {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  color: var(--glacier-blue);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.form-field input,
.form-field textarea {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--glacier-white);
  background-color: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(184, 202, 217, 0.3);
  border-radius: 4px;
  padding: 12px 16px;
  width: 100%;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  outline: none;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: rgba(184, 202, 217, 0.5);
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--basecamp-tan);
  background-color: rgba(255, 255, 255, 0.1);
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.btn-submit {
  background-color: var(--beacon-rust);
  color: var(--glacier-white);
  border: 2px solid var(--beacon-rust);
  font-size: 15px;
  padding: 13px 32px;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.btn-submit:hover,
.btn-submit:focus-visible {
  background-color: #a33d22;
  border-color: #a33d22;
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-status {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
}

.form-status--success {
  color: #6fcf9a;
}

.form-status--error {
  color: #f4a070;
}

.contact-form .form-row + .form-field,
.contact-form .form-row--half + .form-field {
  margin-top: 20px;
}

.contact-alt {
  font-size: 14px;
  color: var(--glacier-blue);
  opacity: 0.8;
}

.contact-alt .contact-link {
  font-size: 14px;
}

/* ============================================================
   NEWSLETTER
   ============================================================ */
.newsletter {
  background-color: var(--glacier-white);
  padding-block: 80px;
  border-top: 1px solid var(--mist-grey);
}

.newsletter-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.newsletter h2 {
  margin-bottom: 16px;
}

.newsletter-lede {
  color: var(--slate-ink);
  font-size: 16px;
  max-width: 560px;
  margin-bottom: 36px;
}

.libutton {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 7px;
  text-align: center;
  outline: none;
  text-decoration: none !important;
  color: #ffffff !important;
  width: 200px;
  height: 32px;
  border-radius: 16px;
  background-color: #0A66C2;
  font-family: "SF Pro Text", Helvetica, sans-serif;
  font-size: 14px;
  font-weight: 500;
}

.libutton:hover {
  background-color: #004182;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background-color: var(--glacier-white);
  border-top: 1px solid var(--mist-grey);
  padding-block: 32px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-copy,
.footer-location {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--alpine-blue);
}

/* ============================================================
   RESPONSIVE — 2 columns below 900px
   ============================================================ */
@media (max-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

/* ============================================================
   RESPONSIVE — 1 column below 640px
   ============================================================ */
@media (max-width: 640px) {
  h2 {
    margin-bottom: 32px;
  }

  .hero {
    padding-top: 72px;
    padding-bottom: 64px;
  }

  .what-we-do,
  .who-we-serve,
  .offers,
  .about,
  .contact {
    padding-block: 64px;
  }

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

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ============================================================
   RESPONSIVE — Nav collapse below 768px
   ============================================================ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-inner > .btn-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-inner {
    min-height: 100px;
  }

  .nav-logo img {
    height: 90px;
  }
}

@media (max-width: 480px) {
  .nav-inner {
    min-height: 80px;
  }

  .nav-logo img {
    height: 72px;
    max-width: calc(100vw - 80px);
  }
}

/* ============================================================
   FOCUS STYLES (accessibility)
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--beacon-rust);
  outline-offset: 3px;
  border-radius: 2px;
}