:root {
  --navy-950: #06283b;
  --navy-900: #073b57;
  --navy-800: #07577d;
  --sky-600: #168fc2;
  --sky-500: #32aee4;
  --sky-100: #dff4fd;
  --blue-50: #f2f8fb;
  --slate-900: #17252e;
  --slate-700: #40545f;
  --slate-500: #687b85;
  --slate-300: #cbd7dc;
  --slate-200: #dde6ea;
  --slate-100: #edf3f5;
  --white: #fff;
  --amber-600: #c55f0a;
  --amber-100: #fff0d6;
  --green-700: #24734f;
  --green-100: #dff4e9;
  --red-700: #a63c35;
  --red-100: #fae7e5;
  --shadow-sm: 0 5px 20px rgba(6, 40, 59, .08);
  --shadow-lg: 0 18px 46px rgba(6, 40, 59, .15);
  --radius-sm: .5rem;
  --radius: .9rem;
  --radius-lg: 1.35rem;
  --container: 74rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--slate-900);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

img { display: block; max-width: 100%; }
a { color: var(--navy-800); text-underline-offset: .18em; }
a:hover { color: var(--sky-600); }
button, input, textarea, select { font: inherit; }
button, .button { min-height: 2.75rem; }

.container { width: min(var(--container), calc(100% - 2rem)); margin-inline: auto; }
.narrow { width: min(49rem, calc(100% - 2rem)); margin-inline: auto; }
.section { padding: 4.5rem 0; }
.section-sm { padding: 2.75rem 0; }
.section-muted { background: var(--blue-50); }
.section-dark { color: var(--white); background: var(--navy-950); }

.skip-link {
  position: fixed;
  z-index: 9999;
  top: .5rem;
  left: .5rem;
  padding: .75rem 1rem;
  color: var(--white);
  background: var(--navy-950);
  border-radius: var(--radius-sm);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.utility-bar { color: #e8f7fd; background: var(--navy-900); font-size: .875rem; }
.utility-inner { display: flex; align-items: center; justify-content: space-between; min-height: 2.25rem; gap: 1rem; }
.utility-inner a { color: var(--white); text-decoration: none; }

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--slate-200);
  backdrop-filter: blur(12px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 6.35rem; gap: 2rem; }
.brand img { width: 179px; height: 85px; object-fit: contain; }
.primary-nav { display: flex; align-items: center; gap: .25rem; }
.primary-nav a {
  padding: .7rem .78rem;
  color: var(--slate-700);
  border-radius: var(--radius-sm);
  font-size: .94rem;
  font-weight: 700;
  text-decoration: none;
}
.primary-nav a:hover, .primary-nav a.active { color: var(--navy-800); background: var(--sky-100); }
.menu-toggle { display: none; align-items: center; gap: .55rem; color: var(--navy-900); background: transparent; border: 0; font-weight: 800; }
.menu-icon, .menu-icon::before, .menu-icon::after { display: block; width: 1.35rem; height: 2px; background: currentColor; content: ""; }
.menu-icon { position: relative; }
.menu-icon::before { position: absolute; top: -.42rem; }
.menu-icon::after { position: absolute; top: .42rem; }

.hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: linear-gradient(118deg, rgba(6,40,59,.98) 0%, rgba(7,87,125,.95) 54%, rgba(22,143,194,.88) 100%);
}
.hero::after {
  position: absolute;
  inset: 0 0 0 55%;
  background: linear-gradient(90deg, var(--navy-800), transparent 35%), url('../img/stack-illustration.jpg') center / cover;
  opacity: .38;
  content: "";
}
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(18rem, .7fr); gap: 3rem; align-items: end; min-height: 33rem; padding-block: 5rem; }
.eyebrow { margin: 0 0 .75rem; color: var(--sky-500); font-size: .82rem; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.hero h1, .page-hero h1 { max-width: 13ch; margin: 0; font-size: clamp(2.55rem, 6vw, 5.35rem); line-height: .98; letter-spacing: -.045em; }
.hero-copy > p:not(.eyebrow) { max-width: 41rem; margin: 1.5rem 0 0; color: #dcecf3; font-size: clamp(1.05rem, 2vw, 1.25rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .72rem 1.05rem;
  color: var(--white);
  background: var(--navy-800);
  border: 2px solid var(--navy-800);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
}
.button:hover { color: var(--white); background: var(--sky-600); border-color: var(--sky-600); }
.button-light { color: var(--navy-950); background: var(--white); border-color: var(--white); }
.button-light:hover { color: var(--navy-950); background: var(--sky-100); border-color: var(--sky-100); }
.button-ghost { color: var(--white); background: transparent; border-color: rgba(255,255,255,.55); }
.button-outline { color: var(--navy-800); background: transparent; border-color: var(--navy-800); }
.button-danger { background: var(--red-700); border-color: var(--red-700); }
.button-small { min-height: 2.35rem; padding: .48rem .75rem; font-size: .88rem; }

.hero-brief { padding: 1.25rem; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.28); border-radius: var(--radius); backdrop-filter: blur(10px); }
.hero-brief h2 { margin: 0 0 .35rem; font-size: 1.15rem; }
.hero-brief p { margin: .25rem 0 1rem; color: #e4f2f7; }

.page-hero { color: var(--white); background: linear-gradient(125deg, var(--navy-950), var(--navy-800)); }
.page-hero .container { padding-block: 4.2rem; }
.page-hero h1 { max-width: 18ch; font-size: clamp(2.35rem, 5vw, 4.2rem); }
.page-hero p:last-child { max-width: 46rem; margin: 1.25rem 0 0; color: #d8eaf2; font-size: 1.15rem; }

.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 1.75rem; }
.section-heading h2, .content-heading { margin: 0; color: var(--navy-950); font-size: clamp(1.75rem, 4vw, 2.65rem); line-height: 1.1; letter-spacing: -.025em; }
.section-heading p { max-width: 39rem; margin: .65rem 0 0; color: var(--slate-700); }
.text-link { font-weight: 800; white-space: nowrap; }

.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.15rem; }
.card-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
  padding: 1.45rem;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card h2, .card h3 { margin: .25rem 0 .65rem; color: var(--navy-950); line-height: 1.25; }
.card p { margin: .4rem 0 1rem; color: var(--slate-700); }
.card p:last-child { margin-bottom: 0; }
.card .button { margin-top: .4rem; }
.card-accent { border-top: 5px solid var(--sky-500); }
.card-alert { border-top-color: var(--amber-600); }
.card-icon { display: grid; width: 2.65rem; height: 2.65rem; place-items: center; color: var(--navy-800); background: var(--sky-100); border-radius: .7rem; font-weight: 900; }
.meta { color: var(--slate-500); font-size: .87rem; font-weight: 700; letter-spacing: .025em; }
.badge { display: inline-flex; align-items: center; min-height: 1.75rem; padding: .2rem .55rem; color: var(--navy-800); background: var(--sky-100); border-radius: 999px; font-size: .78rem; font-weight: 900; text-transform: uppercase; }
.badge-alert { color: var(--amber-600); background: var(--amber-100); }
.badge-success { color: var(--green-700); background: var(--green-100); }

.feature-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(19rem, .8fr); gap: 3rem; align-items: center; }
.feature-image { overflow: hidden; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.feature-image img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.link-list { display: grid; gap: .7rem; padding: 0; list-style: none; }
.link-list a { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .85rem 1rem; background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius-sm); font-weight: 750; text-decoration: none; }
.link-list a::after { content: "↗"; }

.notice { padding: 1rem 1.1rem; border-left: 5px solid var(--sky-600); background: var(--sky-100); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.notice-warning { border-left-color: var(--amber-600); background: var(--amber-100); }
.notice p { margin: .2rem 0; }

.resource-groups { display: grid; gap: 2.6rem; }
.resource-group h2 { margin: 0 0 1rem; padding-bottom: .75rem; color: var(--navy-950); border-bottom: 2px solid var(--sky-100); }
.resource-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.resource-card { display: flex; flex-direction: column; min-height: 100%; }
.resource-card .resource-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: auto; padding-top: .5rem; }

.featured-record { padding: 2rem; background: linear-gradient(135deg, var(--navy-950), var(--navy-800)); border-radius: var(--radius-lg); color: var(--white); box-shadow: var(--shadow-lg); }
.featured-record h2 { margin: .45rem 0 .6rem; font-size: clamp(1.75rem, 4vw, 2.7rem); line-height: 1.12; }
.featured-record p { color: #dcecf3; }
.record-actions { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.25rem; }

.filters { display: grid; grid-template-columns: minmax(15rem, 1fr) 12rem; gap: .85rem; margin: 1.25rem 0 2rem; }
.field label { display: block; margin-bottom: .35rem; color: var(--slate-700); font-weight: 800; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: .72rem .8rem;
  color: var(--slate-900);
  background: var(--white);
  border: 1px solid #aebdc4;
  border-radius: var(--radius-sm);
}
.field textarea { min-height: 8rem; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { outline: 3px solid rgba(50,174,228,.28); border-color: var(--sky-600); }

.archive-list { display: grid; gap: .8rem; }
.archive-item { display: grid; grid-template-columns: 9rem minmax(0, 1fr) auto; gap: 1.25rem; align-items: center; padding: 1.1rem 1.2rem; background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius-sm); }
.archive-item h2, .archive-item h3 { margin: 0; color: var(--navy-950); font-size: 1.05rem; }
.archive-item p { margin: .25rem 0 0; color: var(--slate-700); }
.archive-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .5rem; }
.year-heading { margin: 2.3rem 0 .8rem; color: var(--navy-950); }
.empty-state { padding: 2rem; color: var(--slate-700); text-align: center; border: 1px dashed var(--slate-300); border-radius: var(--radius); }

.prose { color: var(--slate-700); }
.prose h2, .prose h3 { color: var(--navy-950); line-height: 1.2; }
.prose h2 { margin-top: 2.4rem; font-size: 1.8rem; }
.prose li + li { margin-top: .55rem; }
.mission-list { counter-reset: mission; display: grid; gap: 1rem; padding: 0; list-style: none; }
.mission-list li { position: relative; padding: 1.15rem 1.15rem 1.15rem 4rem; background: var(--blue-50); border-radius: var(--radius); }
.mission-list li::before { counter-increment: mission; position: absolute; top: 1rem; left: 1rem; display: grid; width: 2rem; height: 2rem; place-items: center; color: var(--white); background: var(--navy-800); border-radius: 50%; content: counter(mission); font-weight: 900; }

.site-footer { padding: 3.5rem 0 1.5rem; color: #d7e8ef; background: var(--navy-950); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 3rem; }
.footer-logo { width: 150px; padding: .5rem; background: var(--white); border-radius: var(--radius-sm); }
.site-footer h2 { margin: 0 0 .8rem; color: var(--white); font-size: 1rem; }
.site-footer a { display: block; width: fit-content; margin: .45rem 0; color: #d7e8ef; text-decoration: none; }
.site-footer a:hover { color: var(--sky-500); }
.footer-bottom { display: flex; justify-content: space-between; gap: 1.5rem; margin-top: 2.5rem; padding-top: 1.25rem; color: #9fbbc7; border-top: 1px solid rgba(255,255,255,.14); font-size: .85rem; }

.admin-shell { min-height: 100vh; background: var(--blue-50); }
.admin-header { color: var(--white); background: var(--navy-950); }
.admin-header .container { display: flex; align-items: center; justify-content: space-between; min-height: 4.5rem; gap: 1rem; }
.admin-header a { color: var(--white); text-decoration: none; }
.admin-nav { display: flex; gap: .35rem; }
.admin-nav a { padding: .5rem .65rem; border-radius: .4rem; }
.admin-nav a:hover, .admin-nav a.active { background: rgba(255,255,255,.14); }
.admin-main { padding-block: 2.5rem 4rem; }
.admin-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; }
.stat { padding: 1.4rem; background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius); }
.stat strong { display: block; color: var(--navy-950); font-size: 2.2rem; }
.panel { padding: 1.5rem; background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.panel + .panel { margin-top: 1.25rem; }
.panel-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.panel-header h1, .panel-header h2 { margin: 0; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
.field-full { grid-column: 1 / -1; }
.check-field { display: flex; align-items: center; gap: .55rem; }
.check-field input { width: 1.15rem; height: 1.15rem; }
.form-actions { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.25rem; }
.flash { margin-bottom: 1rem; padding: .9rem 1rem; border-radius: var(--radius-sm); }
.flash-success { color: var(--green-700); background: var(--green-100); }
.flash-error { color: var(--red-700); background: var(--red-100); }
.admin-table-wrap { overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: .75rem; border-bottom: 1px solid var(--slate-200); text-align: left; vertical-align: top; }
.admin-table th { color: var(--slate-700); font-size: .82rem; text-transform: uppercase; }
.admin-table form { display: inline; }
.resource-row { display: grid; grid-template-columns: 11rem minmax(0,1fr) auto; gap: .65rem; margin-bottom: .65rem; }
.login-wrap { display: grid; min-height: 100vh; place-items: center; padding: 1rem; background: linear-gradient(135deg, var(--navy-950), var(--navy-800)); }
.login-card { width: min(31rem, 100%); padding: 2rem; background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.login-card img { width: 150px; margin-bottom: 1rem; }
.login-card h1 { margin: 0 0 .5rem; color: var(--navy-950); }
.login-card .field { margin-top: 1rem; }
.login-card .button { width: 100%; margin-top: 1.2rem; }

@media (max-width: 960px) {
  .menu-toggle { display: inline-flex; }
  .primary-nav { position: absolute; top: 100%; right: 1rem; left: 1rem; display: none; flex-direction: column; align-items: stretch; padding: .75rem; background: var(--white); border: 1px solid var(--slate-200); border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow-lg); }
  .primary-nav.open { display: flex; }
  .hero-inner { grid-template-columns: 1fr; min-height: 31rem; }
  .hero-brief { max-width: 30rem; }
  .card-grid, .resource-cards { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .feature-split { grid-template-columns: 1fr; }
  .archive-item { grid-template-columns: 7rem minmax(0,1fr); }
  .archive-links { grid-column: 2; justify-content: flex-start; }
}

@media (max-width: 680px) {
  .utility-inner span { display: none; }
  .utility-inner { justify-content: flex-end; }
  .header-inner { min-height: 5.1rem; }
  .brand img { width: 132px; height: auto; }
  .section { padding: 3.25rem 0; }
  .hero::after { inset: 50% 0 0; opacity: .2; }
  .hero-inner { padding-block: 3.7rem; }
  .hero h1 { font-size: clamp(2.7rem, 15vw, 4rem); }
  .section-heading { align-items: start; flex-direction: column; gap: .75rem; }
  .card-grid, .card-grid-2, .resource-cards, .filters, .footer-grid, .admin-grid, .form-grid { grid-template-columns: 1fr; }
  .archive-item { grid-template-columns: 1fr; }
  .archive-links { grid-column: auto; justify-content: flex-start; }
  .footer-bottom { flex-direction: column; }
  .admin-header .container { align-items: flex-start; flex-direction: column; padding-block: .75rem; }
  .admin-nav { flex-wrap: wrap; }
  .resource-row { grid-template-columns: 1fr; padding: .75rem; background: var(--blue-50); border-radius: var(--radius-sm); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}