:root {
  --red: #FF0000;
  --dark-blue: #0018A8;
  --light-blue: #5B9BD5;
  --bg-light: #F5F6FA;
  --text-dark: #333333;
}

* {
  box-sizing: border-box;
  font-family: "Segoe UI", Inter, Roboto, sans-serif;
}

body {
  margin: 0;
  background: var(--bg-light);
  color: var(--text-dark);
}

/* Header */
.header {
  background: linear-gradient(
    180deg,
    #d6e6fb 0%,
    #F5F6FA 100%
  );
  padding: 32px 16px 24px;
  text-align: center;
}

.header img {
  max-width: 520px;
  width: 100%;
}

/* Page container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 16px;
  text-align: center;
}

h1 {
  color: var(--dark-blue);
  margin-bottom: 8px;
}

.subtitle {
  color: #555;
  margin-bottom: 40px;
}

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

/* Cards */
.card {
  background: #fff;
  border-radius: 12px;
  padding: 28px 20px;
  text-decoration: none;
  color: inherit;
  border-top: 4px solid var(--dark-blue);
  box-shadow: 0 6px 14px rgba(0,0,0,0.08);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 22px rgba(0,0,0,0.12);
  border-top-color: var(--light-blue);
}

.card-icon {
  font-size: 36px;
  margin-bottom: 16px;
  color: var(--red);
}

.card h2 {
  margin: 0 0 8px;
  color: var(--dark-blue);
}

.card p {
  margin: 0;
  color: #555;
}

/* Footer */
.footer-bar {
  margin-top: 80px;
  background: linear-gradient(
    180deg,
    #F5F6FA 0%,
    #d6e6fb 100%
  );
  padding: 32px 16px;
  text-align: center;
}

.footer-bar img {
  max-width: 280px;
  width: 100%;
  opacity: 1;
}

/* ── App Header ──────────────────────────────────────────── */
.app-header {
  background: linear-gradient(180deg, #d6e6fb 0%, #F5F6FA 100%);
  border-bottom: 3px solid var(--dark-blue);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.app-header-logo img {
  height: 40px;
  display: block;
}

.app-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.app-nav-link {
  color: var(--dark-blue);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 6px;
  transition: background 0.15s;
}

.app-nav-link:hover {
  background: rgba(0, 24, 168, 0.08);
}

.app-nav-link.active {
  background: var(--dark-blue);
  color: #fff;
}

.app-logout-btn {
  margin-left: auto;
  background: none;
  border: 1px solid var(--dark-blue);
  color: var(--dark-blue);
  padding: 6px 16px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.app-logout-btn:hover {
  background: var(--dark-blue);
  color: #fff;
}

/* ── App Footer ──────────────────────────────────────────── */
.app-footer {
  background: linear-gradient(180deg, #F5F6FA 0%, #d6e6fb 100%);
  border-top: 3px solid var(--dark-blue);
  padding: 24px 16px;
  text-align: center;
  margin-top: 48px;
}

.app-footer img {
  max-width: 240px;
  width: 100%;
  opacity: 0.9;
}

/* ── Page content wrapper ────────────────────────────────── */
.page-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
}

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

@media (max-width: 600px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}