/* =========================================================
   ARTHREYSQUARED GROUP
   Shared stylesheet

   QUICK BRAND EDIT:
   Change the values in :root to update the full color system.
   ========================================================= */

:root {
  --navy: #0b1f3a;
  --navy-2: #10294d;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --teal: #0f766e;
  --gold: #d99a24;

  --ink: #0f172a;
  --text: #475569;
  --muted: #64748b;
  --line: #e2e8f0;
  --soft: #f8fafc;
  --white: #ffffff;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;

  --shadow-sm: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 20px 50px rgba(15, 23, 42, 0.12);

  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

a {
  color: inherit;
}

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

/* =========================================================
   HEADER
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  color: var(--white);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.04em;
  box-shadow: var(--shadow-sm);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-copy strong {
  font-size: 16px;
  letter-spacing: 0.04em;
}

.brand-copy small {
  margin-top: 5px;
  font-size: 10px;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: 0.28em;
}

.brand-logo {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.main-nav a {
  text-decoration: none;
  color: #334155;
  font-size: 14px;
  font-weight: 700;
}

.main-nav a:hover {
  color: var(--blue);
}

.nav-cta {
  padding: 10px 15px;
  border-radius: 9px;
  background: var(--navy);
  color: var(--white) !important;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 90px;
  background:
    radial-gradient(circle at 85% 20%, rgba(37, 99, 235, 0.11), transparent 34%),
    radial-gradient(circle at 75% 85%, rgba(15, 118, 110, 0.09), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.eyebrow,
.section-kicker {
  display: inline-block;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.hero h1 {
  margin: 18px 0 22px;
  max-width: 820px;
  color: var(--navy);
  font-size: clamp(44px, 6vw, 74px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hero h1 span {
  color: var(--blue);
}

.hero-lead {
  max-width: 720px;
  margin: 0;
  color: var(--text);
  font-size: 18px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 10px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.18);
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-secondary {
  border-color: #cbd5e1;
  background: var(--white);
  color: var(--ink);
}

.btn-secondary:hover {
  box-shadow: var(--shadow-sm);
}

.btn-light {
  background: var(--white);
  color: var(--navy);
}

.btn-full {
  width: 100%;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.trust-row span,
.founder-tags span {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: #475569;
  font-size: 12px;
  font-weight: 700;
}

.hero-panel {
  padding: 28px;
  border: 1px solid rgba(203, 213, 225, 0.8);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
}

.panel-label,
.mini-label {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.ecosystem-card {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
  padding: 17px 0;
  border-top: 1px solid var(--line);
}

.ecosystem-card:first-of-type {
  border-top: 0;
}

.service-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: #eff6ff;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.ecosystem-card h3 {
  margin: 0 0 3px;
  font-size: 16px;
}

.ecosystem-card p {
  margin: 0;
  color: var(--text);
  font-size: 13px;
  line-height: 1.55;
}

/* =========================================================
   SECTIONS
   ========================================================= */

.section {
  padding: 86px 0;
}

.section-soft {
  background: var(--soft);
}

.section-dark {
  background: var(--navy);
  color: var(--white);
}

.section-heading {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: end;
  margin-bottom: 34px;
}

.section-heading h2,
.publishing-grid h2,
.about-grid h2,
.contact-grid h2,
.founder-grid h2,
.social-panel h2 {
  margin: 8px 0 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.section-heading p,
.large-copy,
.about-copy p,
.social-panel p {
  margin: 0;
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
}

.section-kicker.light {
  color: #93c5fd;
}

/* =========================================================
   SERVICES
   ========================================================= */

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.service-card {
  position: relative;
  min-height: 300px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.card-number {
  margin-bottom: 42px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.service-card h3 {
  margin: 0 0 10px;
  font-size: 21px;
}

.service-card p {
  margin: 0 0 24px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.7;
}

.text-link {
  text-decoration: none;
  color: var(--blue);
  font-size: 14px;
  font-weight: 800;
}

.text-link:hover {
  text-decoration: underline;
}

/* =========================================================
   RESOURCES
   ========================================================= */

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.resource-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.resource-cover {
  min-height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  gap: 4px;
  padding: 24px;
  color: var(--white);
}

.resource-cover span {
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.13em;
  opacity: 0.82;
}

.resource-cover strong {
  font-size: 30px;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.resource-cover small {
  margin-top: 8px;
  opacity: 0.88;
}

.cover-blue {
  background:
    linear-gradient(145deg, rgba(11, 31, 58, 0.15), rgba(11, 31, 58, 0.7)),
    linear-gradient(135deg, #2563eb, #0b1f3a);
}

.cover-teal {
  background:
    linear-gradient(145deg, rgba(6, 78, 59, 0.08), rgba(11, 31, 58, 0.55)),
    linear-gradient(135deg, #0f766e, #0b1f3a);
}

.cover-gold {
  background:
    linear-gradient(145deg, rgba(121, 78, 4, 0.1), rgba(11, 31, 58, 0.68)),
    linear-gradient(135deg, #d99a24, #0b1f3a);
}

.resource-info {
  padding: 22px;
}

.pill {
  display: inline-flex;
  padding: 5px 8px;
  border-radius: 999px;
  background: #eff6ff;
  color: var(--blue);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.resource-info h3 {
  margin: 12px 0 8px;
  font-size: 19px;
}

.resource-info p {
  margin: 0 0 18px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.65;
}

/* =========================================================
   PORTAL
   ========================================================= */

.portal-banner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: center;
  padding: 46px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 85% 20%, rgba(37, 99, 235, 0.4), transparent 28%),
    var(--navy);
  color: var(--white);
}

.portal-banner h2 {
  margin: 8px 0 12px;
  max-width: 760px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.portal-banner p {
  max-width: 720px;
  margin: 0;
  color: #cbd5e1;
}

.portal-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.portal-actions span {
  color: #cbd5e1;
  font-size: 12px;
}

/* =========================================================
   PUBLISHING
   ========================================================= */

.publishing-grid,
.about-grid,
.contact-grid,
.founder-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.publishing-grid .large-copy {
  margin-top: 18px;
}

.check-list {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.check-list span {
  color: #334155;
  font-weight: 700;
}

.publisher-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--soft);
}

.publisher-card h3 {
  margin: 0 0 20px;
  font-size: 24px;
}

.publisher-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.publisher-row span {
  color: var(--text);
  font-size: 14px;
}

/* =========================================================
   ABOUT
   ========================================================= */

.about-copy p {
  color: #cbd5e1;
}

.about-copy p + p {
  margin-top: 16px;
}

.light-link {
  display: inline-block;
  margin-top: 18px;
  color: #93c5fd;
}

/* =========================================================
   FOUNDER
   ========================================================= */

.founder-grid {
  grid-template-columns: 0.33fr 1fr;
  align-items: center;
}

.founder-mark {
  width: min(260px, 100%);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 34px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0)),
    linear-gradient(135deg, var(--navy), var(--blue));
  color: var(--white);
  font-size: 72px;
  font-weight: 900;
  letter-spacing: -0.08em;
  box-shadow: var(--shadow-md);
}

.founder-grid .large-copy {
  margin: 18px 0 22px;
}

.founder-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* =========================================================
   SOCIAL
   ========================================================= */

.social-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 42px;
}

.social-panel p {
  max-width: 730px;
  margin-top: 12px;
}

/* =========================================================
   CONTACT
   ========================================================= */

.contact-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--soft);
}

.contact-item {
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.contact-item:first-child {
  padding-top: 0;
}

.contact-item span,
.contact-item small {
  display: block;
}

.contact-item span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.contact-item strong {
  display: block;
  margin-top: 3px;
  overflow-wrap: anywhere;
}

.contact-item small {
  margin-top: 3px;
  color: var(--muted);
}

.contact-card .btn {
  margin-top: 20px;
}

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
  padding: 42px 0;
  border-top: 1px solid var(--line);
  background: #071526;
  color: var(--white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.8fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.footer-brand .brand-copy small {
  color: #93c5fd;
}

.site-footer p {
  margin: 16px 0 0;
  color: #94a3b8;
  font-size: 13px;
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-links a {
  text-decoration: none;
  color: #cbd5e1;
  font-size: 13px;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: #94a3b8;
  font-size: 12px;
}

/* =========================================================
   COURSEWORK PAGE
   ========================================================= */

.course-hero {
  padding: 64px 0 42px;
  background:
    radial-gradient(circle at 90% 10%, rgba(37, 99, 235, 0.1), transparent 30%),
    var(--soft);
  border-bottom: 1px solid var(--line);
}

.course-hero h1 {
  margin: 8px 0 10px;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1;
  letter-spacing: -0.045em;
}

.course-hero p {
  max-width: 760px;
  margin: 0;
  color: var(--text);
}

.course-shell {
  padding: 42px 0 80px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tab-btn,
.filter-btn {
  border: 1px solid var(--line);
  background: var(--white);
  color: #475569;
  cursor: pointer;
  font-weight: 800;
}

.tab-btn {
  padding: 10px 14px;
  border-radius: 10px;
}

.tab-btn.active {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.filter-btn {
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 12px;
}

.filter-btn.active {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.school-section + .school-section {
  margin-top: 36px;
}

.school-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 18px;
}

.school-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-msuiit {
  background: var(--blue);
}

.dot-spc {
  background: var(--teal);
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.course-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 240px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.badge-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.badge {
  display: inline-flex;
  padding: 5px 8px;
  border-radius: 7px;
  background: #dbeafe;
  color: #1e40af;
  font-size: 11px;
  font-weight: 900;
}

.badge-spc {
  background: #ccfbf1;
  color: #115e59;
}

.school-tag {
  color: var(--muted);
  font-size: 10px;
  font-weight: 900;
}

.course-card h3 {
  margin: 12px 0 8px;
  font-size: 18px;
}

.course-card p {
  margin: 0 0 18px;
  color: var(--text);
  font-size: 13px;
  line-height: 1.6;
}

.course-card .btn {
  align-self: flex-start;
  min-height: 40px;
}

.profile-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
}

.profile-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.profile-card h2,
.profile-card h3 {
  margin-top: 0;
}

.profile-card ul {
  padding-left: 18px;
  color: var(--text);
}

.profile-card li + li {
  margin-top: 6px;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 1000px) {
  .hero-grid,
  .section-heading,
  .publishing-grid,
  .about-grid,
  .contact-grid,
  .portal-banner {
    grid-template-columns: 1fr;
  }

  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .resource-grid,
  .course-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .social-panel {
    align-items: flex-start;
    flex-direction: column;
  }

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

@media (max-width: 780px) {
  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: 78px;
    left: 20px;
    right: 20px;
    display: none;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--white);
    box-shadow: var(--shadow-md);
  }

  .main-nav.open {
    display: grid;
    gap: 6px;
  }

  .main-nav a {
    padding: 10px 12px;
    border-radius: 8px;
  }

  .nav-cta {
    text-align: center;
  }

  .hero {
    padding-top: 68px;
  }

  .hero-grid {
    gap: 34px;
  }

  .hero h1 {
    font-size: clamp(42px, 14vw, 62px);
  }

  .section {
    padding: 64px 0;
  }

  .section-heading {
    gap: 18px;
  }

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

  .founder-mark {
    max-width: 220px;
  }

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

@media (max-width: 620px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .service-grid,
  .resource-grid,
  .course-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel,
  .portal-banner,
  .publisher-card,
  .contact-card {
    padding: 22px;
  }

  .publisher-row {
    grid-template-columns: 1fr;
    gap: 3px;
  }

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

  .brand-copy strong {
    font-size: 14px;
  }

  .hero-actions .btn {
    width: 100%;
  }
}