:root {
  --uss-blue-900: #0c2d6b;
  --uss-blue-800: #0f3d8c;
  --uss-blue-700: #1557b8;
  --uss-blue-600: #1a6fe0;
  --uss-blue-500: #2b8cff;
  --uss-blue-400: #5aa8ff;
  --uss-blue-100: #e8f2ff;
  --uss-blue-50: #f4f9ff;
  --uss-slate-900: #0f172a;
  --uss-slate-600: #475569;
  --uss-slate-400: #94a3b8;
  --uss-white: #ffffff;
  --uss-shadow: 0 4px 24px rgba(15, 61, 140, 0.12);
  --uss-shadow-lg: 0 20px 50px rgba(15, 61, 140, 0.18);
  --uss-radius: 1rem;
  --uss-transition: 0.25s ease;
}

html {
  font-size: 14px;
  scroll-behavior: smooth;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--uss-slate-900);
  background-color: var(--uss-white);
  margin: 0;
  min-height: 100vh;
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem var(--uss-blue-500);
}

/* ── Navbar ── */
.uss-navbar {
  background: linear-gradient(135deg, var(--uss-blue-900) 0%, var(--uss-blue-700) 100%);
  padding: 0.75rem 0;
  box-shadow: var(--uss-shadow);
}

.uss-navbar .navbar-brand {
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--uss-white) !important;
  letter-spacing: 0.02em;
}

.uss-navbar .navbar-brand span {
  color: var(--uss-blue-400);
}

.uss-navbar .nav-link {
  color: rgba(255, 255, 255, 0.85) !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  border-radius: 0.5rem;
  transition: background var(--uss-transition), color var(--uss-transition);
}

.uss-navbar .nav-link:hover {
  color: var(--uss-white) !important;
  background: rgba(255, 255, 255, 0.1);
}

.uss-navbar .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.4);
}

.uss-navbar .navbar-toggler-icon {
  filter: invert(1);
}

.uss-btn-outline-light {
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: var(--uss-white);
  font-weight: 600;
  border-radius: 0.5rem;
  padding: 0.4rem 1.25rem;
  transition: all var(--uss-transition);
}

.uss-btn-outline-light:hover {
  background: var(--uss-white);
  color: var(--uss-blue-800);
  border-color: var(--uss-white);
}

.uss-btn-primary {
  background: linear-gradient(135deg, var(--uss-blue-600) 0%, var(--uss-blue-500) 100%);
  border: none;
  color: var(--uss-white);
  font-weight: 600;
  border-radius: 0.5rem;
  padding: 0.5rem 1.5rem;
  box-shadow: 0 4px 14px rgba(26, 111, 224, 0.35);
  transition: transform var(--uss-transition), box-shadow var(--uss-transition);
}

.uss-btn-primary:hover {
  background: linear-gradient(135deg, var(--uss-blue-700) 0%, var(--uss-blue-600) 100%);
  color: var(--uss-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26, 111, 224, 0.45);
}

.uss-btn-lg {
  padding: 0.75rem 2rem;
  font-size: 1.05rem;
  border-radius: 0.625rem;
}

/* ── Hero ── */
.uss-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--uss-blue-900) 0%, var(--uss-blue-700) 45%, var(--uss-blue-600) 100%);
  color: var(--uss-white);
  padding: 5rem 0 6rem;
}

.uss-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(90, 168, 255, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(43, 140, 255, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.uss-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 30%, transparent 100%);
  pointer-events: none;
}

.uss-hero-content {
  position: relative;
  z-index: 1;
}

.uss-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--uss-blue-100);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 0.9rem;
  border-radius: 2rem;
  margin-bottom: 1.25rem;
}

.uss-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.uss-hero h1 .highlight {
  background: linear-gradient(90deg, var(--uss-blue-400), #93c5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.uss-hero-lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  max-width: 540px;
  margin-bottom: 2rem;
}

.uss-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.uss-btn-hero-outline {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: var(--uss-white);
  font-weight: 600;
  border-radius: 0.625rem;
  padding: 0.75rem 2rem;
  transition: all var(--uss-transition);
}

.uss-btn-hero-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--uss-white);
  color: var(--uss-white);
}

.uss-hero-visual {
  position: relative;
  z-index: 1;
}

.uss-hero-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--uss-radius);
  padding: 1.75rem;
  box-shadow: var(--uss-shadow-lg);
}

.uss-hero-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

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

.uss-dot-red { background: #f87171; }
.uss-dot-yellow { background: #fbbf24; }
.uss-dot-green { background: #4ade80; }

.uss-stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.uss-stat-row:last-child {
  border-bottom: none;
}

.uss-stat-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
}

.uss-stat-value {
  font-weight: 700;
  font-size: 1rem;
  color: var(--uss-blue-400);
}

/* ── Sections ── */
.uss-section {
  padding: 5rem 0;
}

.uss-section-alt {
  background: var(--uss-blue-50);
}

.uss-section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--uss-blue-900);
  margin-bottom: 0.75rem;
}

.uss-section-subtitle {
  color: var(--uss-slate-600);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto 3rem;
  line-height: 1.65;
}

/* ── Feature cards ── */
.uss-feature-card {
  background: var(--uss-white);
  border: 1px solid #dbeafe;
  border-radius: var(--uss-radius);
  padding: 2rem 1.75rem;
  height: 100%;
  transition: transform var(--uss-transition), box-shadow var(--uss-transition);
}

.uss-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--uss-shadow-lg);
}

.uss-feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 0.75rem;
  background: linear-gradient(135deg, var(--uss-blue-100) 0%, #dbeafe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}

.uss-feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--uss-blue-900);
  margin-bottom: 0.6rem;
}

.uss-feature-card p {
  color: var(--uss-slate-600);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

/* ── Steps ── */
.uss-step {
  text-align: center;
  padding: 1.5rem 1rem;
}

.uss-step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--uss-blue-600), var(--uss-blue-500));
  color: var(--uss-white);
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  box-shadow: 0 4px 14px rgba(26, 111, 224, 0.3);
}

.uss-step h4 {
  font-weight: 700;
  color: var(--uss-blue-900);
  margin-bottom: 0.5rem;
}

.uss-step p {
  color: var(--uss-slate-600);
  font-size: 0.9rem;
  line-height: 1.55;
  margin: 0;
}

/* ── CTA banner ── */
.uss-cta {
  background: linear-gradient(135deg, var(--uss-blue-800) 0%, var(--uss-blue-600) 100%);
  border-radius: 1.25rem;
  padding: 3.5rem 2.5rem;
  text-align: center;
  color: var(--uss-white);
  box-shadow: var(--uss-shadow-lg);
}

.uss-cta h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.uss-cta p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.05rem;
  margin-bottom: 1.75rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.uss-btn-white {
  background: var(--uss-white);
  color: var(--uss-blue-800);
  font-weight: 700;
  border: none;
  border-radius: 0.625rem;
  padding: 0.75rem 2rem;
  transition: transform var(--uss-transition), box-shadow var(--uss-transition);
}

.uss-btn-white:hover {
  background: var(--uss-blue-50);
  color: var(--uss-blue-900);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* ── Footer ── */
.uss-footer {
  background: var(--uss-blue-900);
  color: rgba(255, 255, 255, 0.65);
  padding: 2.5rem 0;
  font-size: 0.9rem;
}

.uss-footer a {
  color: var(--uss-blue-400);
  text-decoration: none;
  transition: color var(--uss-transition);
}

.uss-footer a:hover {
  color: var(--uss-white);
}

.uss-footer-brand {
  font-weight: 700;
  color: var(--uss-white);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

/* ── Modals ── */
.modal-header {
  background: linear-gradient(135deg, var(--uss-blue-900), var(--uss-blue-700));
  color: var(--uss-white);
  border-bottom: none;
}

.modal-header .btn-close {
  filter: invert(1);
}

.modal-title {
  font-weight: 700;
}

.uss-table-card {
  min-height: 100px;
  border-radius: 0.5rem;
}

/* ── Layout overrides ── */
.uss-main {
  padding: 0;
}

.uss-page-content {
  padding: 2rem 0 3rem;
}