/* ---------------------------------------------------------
 * International Defence Laboratory — light theme
 * Grey palette, Barlow sans-serif, contained content column.
 * --------------------------------------------------------- */

:root {
  --paper: #f2f2f2;
  --paper-2: #e8e8e8;
  --card: #ffffff;
  --ink: #1a1d21;
  --ink-mid: #3a4048;
  --muted: #6a7079;
  --line: #dcdcdc;
  --line-2: #c4c6ca;
  --accent: #2b3a4a;
  --accent-2: #5c6672;
  --sans:
    "Barlow", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica,
    Arial, sans-serif;
  --max: 1140px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
  height: auto;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 2px;
  z-index: 100;
}
.skip-link:focus {
  left: 8px;
}

/* ---------- Typography ---------- */

h1,
h2,
h3,
h4 {
  font-family: var(--sans);
  color: var(--ink);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
  text-transform: none;
}
h1 {
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.005em;
}
h2 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  text-transform: uppercase;
  letter-spacing: -0.005em;
}
h3 {
  font-size: 1.3rem;
  font-weight: 700;
}
h4 {
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
}
h1 em,
h2 em,
h3 em {
  font-style: normal;
  color: var(--accent);
  font-weight: inherit;
}
p {
  margin: 0 0 1em;
}
.lead {
  font-size: 1.15rem;
  color: var(--ink-mid);
  font-weight: 400;
}

.eyebrow {
  font-family: var(--sans);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0 0 1rem;
}

/* ---------- Header ---------- */

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: saturate(160%) blur(6px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
  text-decoration: none;
}
.brand-logo {
  height: 80px;
  width: auto;
  display: block;
  flex: 0 0 auto;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}
.brand-title {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}
.brand-tag {
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
  font-weight: 600;
}
.brand:hover {
  text-decoration: none;
}

#primary-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
#primary-nav a {
  font-family: var(--sans);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition:
    border-color 0.2s ease,
    color 0.2s ease;
}
#primary-nav a:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}
#primary-nav .nav-cta {
  border: 1px solid var(--accent);
  padding: 9px 18px;
  border-radius: 2px;
  color: var(--accent);
}
#primary-nav .nav-cta:hover {
  background: var(--accent);
  color: #fff;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line-2);
  padding: 10px;
  cursor: pointer;
  border-radius: 2px;
}
.menu-toggle span:not(.sr-only) {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  margin: 4px 0;
}

/* ---------- Buttons ---------- */

.button {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
  text-decoration: none;
}
.button-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.button-primary:hover {
  background: #1c2733;
  text-decoration: none;
}
.button-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-2);
}
.button-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* ---------- Hero ---------- */

.hero {
  padding: 44px 0 28px;
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: stretch;
}
.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 12px 0;
}
.hero-copy h1 {
  margin-bottom: 0.4em;
}
.hero-intro {
  font-size: 1.1rem;
  color: var(--ink-mid);
  max-width: 44ch;
  margin-bottom: 1.6em;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-figure {
  margin: 0;
  align-self: stretch;
  overflow: hidden;
}
.hero-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.trust-strip {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 36px auto 0;
  padding: 0 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.trust-strip li {
  padding: 22px 20px;
  text-align: center;
  border-right: 1px solid var(--line);
}
.trust-strip li:last-child {
  border-right: 0;
}
.trust-strip strong {
  display: block;
  font-size: 1.15rem;
  color: var(--ink);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.trust-strip span {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

/* ---------- Sections ---------- */

.section {
  padding: 88px 0;
}
.section-tint {
  background: #ebebeb;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-heading .eyebrow {
  margin-bottom: 1rem;
}
.section-heading h2 {
  margin-bottom: 0.5em;
}
.section-lede {
  color: var(--ink-mid);
  font-size: 1.08rem;
}

/* ---------- About ---------- */

.prose {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}
.prose .lead::first-letter {
  font-family: var(--sans);
  font-weight: 900;
  font-size: 3.2rem;
  float: left;
  line-height: 0.9;
  padding: 0.05em 0.14em 0 0;
  color: var(--accent);
}
.prose .lead {
  text-align: left;
}
.prose p:not(.lead) {
  text-align: center;
  color: var(--ink-mid);
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
}
.mission-card {
  background: var(--card);
  padding: 34px 32px;
  border: 1px solid var(--line);
  border-radius: 3px;
  box-shadow: 0 12px 30px -24px rgba(26, 29, 33, 0.3);
  position: relative;
}
.mission-index {
  display: block;
  font-family: var(--sans);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.mission-card h3 {
  margin-bottom: 10px;
}
.mission-card p {
  margin: 0;
  color: var(--ink-mid);
  font-size: 0.98rem;
}

/* ---------- Services (blog-post style) ---------- */

.service-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 50px;
  max-width: 960px;
  margin: 0 auto 64px;
}
.service-post {
  padding: 30px 4px;
  border-top: 3px solid var(--accent);
}
.service-meta {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0 0 0.8em;
  font-weight: 700;
}
.service-post h3 {
  font-size: 1.35rem;
  margin-bottom: 0.5em;
}
.service-post p {
  margin: 0;
  color: var(--ink-mid);
}

.application-row {
  list-style: none;
  padding: 20px 30px;
  margin: 0 auto 64px;
  max-width: 960px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 26px;
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
  color: var(--ink-mid);
  text-align: center;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.85rem;
}
.application-row li::after {
  content: "\2022";
  color: var(--line-2);
  margin-left: 26px;
}
.application-row li:last-child::after {
  content: "";
  margin: 0;
}

/* ---------- Compliance ---------- */

.compliance-block {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.85fr 1.6fr;
  gap: clamp(30px, 4vw, 56px);
  padding-top: 20px;
}
.compliance-heading .eyebrow {
  margin-bottom: 0.8rem;
}
.compliance-heading h3 {
  font-size: clamp(1.4rem, 2vw, 1.75rem);
  color: var(--ink);
  margin-bottom: 0.7rem;
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: -0.005em;
  font-weight: 800;
}
.compliance-heading > p {
  color: var(--muted);
  margin: 0;
  max-width: 32ch;
  font-size: 0.95rem;
}

.compliance-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 26px;
}
.compliance-item {
  padding-top: 22px;
  border-top: 1px solid var(--line-2);
}
.compliance-item:first-child {
  padding-top: 0;
  border-top: 0;
}
.compliance-item h4 {
  margin-bottom: 10px;
}
.compliance-item > p {
  margin: 0;
  color: var(--ink-mid);
}

.compliance-standards {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: grid;
  gap: 0;
}
.compliance-standards li {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-2);
}
.compliance-standards li:last-child {
  border-bottom: 0;
}
.compliance-standards span {
  font-family: var(--sans);
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.88rem;
}
.compliance-standards em {
  font-style: normal;
  color: var(--ink-mid);
  font-size: 0.96rem;
  font-weight: 400;
}

/* ---------- Standards grid ---------- */

.standards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  max-width: 960px;
  margin: 0 auto;
}
.standard-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  background: var(--card);
  padding: 32px 34px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 3px;
  box-shadow: 0 10px 26px -22px rgba(26, 29, 33, 0.25);
}
.standard-mark {
  display: inline-grid;
  place-items: center;
  height: 56px;
  min-width: 56px;
  padding: 0 12px;
  font-family: var(--sans);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--accent);
  border-radius: 2px;
  text-transform: uppercase;
}
.standard-card h3 {
  margin: 0;
  font-size: 1.35rem;
  text-transform: uppercase;
  letter-spacing: -0.005em;
}
.standard-card p {
  margin: 0;
  color: var(--ink-mid);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* ---------- Contact ---------- */

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(30px, 5vw, 60px);
  align-items: start;
}
.contact-copy h2 {
  margin-bottom: 0.5em;
}
.contact-copy > p {
  color: var(--ink-mid);
  font-size: 1.1rem;
  margin-bottom: 2em;
}

.contact-details {
  margin: 0;
  display: grid;
  gap: 18px;
}
.contact-details div {
  padding: 14px 0;
  border-bottom: 1px solid var(--line-2);
}
.contact-details div:last-child {
  border-bottom: 0;
}
.contact-details dt {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 700;
}
.contact-details dd {
  margin: 0;
  font-size: 1.05rem;
  color: var(--ink);
  font-weight: 500;
}
.contact-details dd a {
  color: var(--ink);
  border-bottom: 1px solid var(--line-2);
}
.contact-details dd a:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

.contact-form {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 34px;
  border-radius: 3px;
  box-shadow: 0 20px 40px -30px rgba(26, 29, 33, 0.3);
  display: grid;
  gap: 18px;
}
.contact-form label {
  display: grid;
  gap: 6px;
  font-family: var(--sans);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  font-family: var(--sans);
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  border-radius: 2px;
  background: var(--paper);
  color: var(--ink);
  letter-spacing: normal;
  text-transform: none;
  font-weight: 400;
  transition:
    border-color 0.15s ease,
    background 0.15s ease;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--card);
}
.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.contact-form input[aria-invalid="true"],
.contact-form select[aria-invalid="true"],
.contact-form textarea[aria-invalid="true"] {
  border-color: #bd2635;
  background: #fdf1f2;
}

.honeypot {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}

.form-note {
  color: var(--muted);
  font-size: 0.88rem;
  margin: 0;
}

.form-status {
  border-left: 3px solid var(--accent);
  background: #e7ecef;
  color: #23303c;
  padding: 14px 16px;
  font-size: 0.95rem;
  border-radius: 2px;
}
.form-status--error {
  background: #fdf1f2;
  border-left-color: #bd2635;
  color: #7a0f19;
}

.contact-form button {
  justify-self: start;
}

/* ---------- Footer ---------- */

.site-footer {
  background: #22262b;
  color: #b8bec5;
  padding: 56px 0 24px;
  font-size: 0.95rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid #383d43;
}
.footer-col h4 {
  color: #fff;
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 0 0 14px;
  font-weight: 700;
}
.footer-col p {
  margin: 0;
}
.footer-col a {
  color: #cfd4da;
  border-bottom: 1px dotted #4a5058;
}
.footer-col a:hover {
  color: #fff;
  border-color: #fff;
  text-decoration: none;
}

.footer-bottom {
  padding-top: 22px;
  text-align: center;
  font-size: 0.8rem;
  color: #8a8f96;
  letter-spacing: 0.04em;
}
.footer-bottom p {
  margin: 0;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .menu-toggle {
    display: block;
  }
  #primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 30px -24px rgba(26, 29, 33, 0.25);
  }
  #primary-nav.open {
    display: flex;
  }
  #primary-nav a {
    padding: 14px 24px;
    border-bottom: 1px solid var(--line);
  }
  #primary-nav a:last-child {
    border-bottom: 0;
  }
  #primary-nav .nav-cta {
    border: 0;
    margin: 8px 24px 0;
    text-align: center;
    background: var(--accent);
    color: #fff;
  }
  .site-header {
    position: relative;
  }

  .brand-title {
    font-size: 1rem;
  }
  .brand-tag {
    font-size: 0.62rem;
    letter-spacing: 0.22em;
  }

  .hero {
    padding: 36px 0 28px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    align-items: start;
  }
  .hero-copy {
    padding: 0;
  }
  .hero-figure {
    align-self: auto;
  }
  .hero-figure img {
    height: auto;
  }

  .trust-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .trust-strip li:nth-child(2) {
    border-right: 0;
  }
  .trust-strip li:nth-child(1),
  .trust-strip li:nth-child(2) {
    border-bottom: 1px solid var(--line);
  }

  .section {
    padding: 64px 0;
  }
  .section-heading {
    margin-bottom: 40px;
  }

  .mission-grid,
  .service-list,
  .standards-grid {
    grid-template-columns: 1fr;
  }

  .compliance-block {
    grid-template-columns: 1fr;
  }

  .contact-inner {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }
  .container {
    padding: 0 20px;
  }
  .brand-tag {
    display: none;
  }
  .contact-form {
    padding: 24px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .compliance-standards li {
    grid-template-columns: 1fr;
    gap: 2px;
    padding: 12px 0;
  }
  .standard-card {
    padding: 26px;
  }
  .prose .lead::first-letter {
    font-size: 2.6rem;
  }
}