:root {
  --color-primary: #1a365d;
  --color-secondary: #2d7d9a;
  --color-accent: #e8b931;
  --color-bg: #f7fafc;
  --color-text: #2d3748;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Navbar */
.navbar-brand-prontosu {
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff !important;
  letter-spacing: 0.5px;
}

.navbar-prontosu {
  background-color: var(--color-primary);
}

.navbar-prontosu .nav-link {
  color: rgba(255, 255, 255, 0.85) !important;
}

.navbar-prontosu .nav-link:hover,
.navbar-prontosu .nav-link.active {
  color: var(--color-accent) !important;
}

.navbar-prontosu .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.3);
}

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

/* Footer */
.footer-prontosu {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 1rem 0;
  font-size: 0.875rem;
}

/* Buttons */
.btn-prontosu {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.btn-prontosu:hover {
  background-color: #142a4d;
  border-color: #142a4d;
  color: #fff;
}

.btn-accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: 600;
}

.btn-accent:hover {
  background-color: #d4a52a;
  border-color: #d4a52a;
  color: var(--color-primary);
}

/* Cards */
.card-stat {
  border: none;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.2s;
}

.card-stat:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.card-stat .card-title {
  color: var(--color-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.card-stat .stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* Login page */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  border: none;
  border-radius: 0.75rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.login-brand {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.5px;
}

.login-accent-bar {
  width: 60px;
  height: 4px;
  background-color: var(--color-accent);
  margin: 0.75rem auto;
  border-radius: 2px;
}

/* Alerts */
.alert-prontosu {
  border-left: 4px solid var(--color-accent);
}

/* Error pages */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.error-code {
  font-size: 6rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.error-message {
  font-size: 1.25rem;
  color: var(--color-secondary);
}

/* Loading spinner for PDF generation */
.btn-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.75;
}

.btn-loading::after {
  content: "";
  position: absolute;
  right: 0.75rem;
  top: 50%;
  width: 1rem;
  height: 1rem;
  margin-top: -0.5rem;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Breadcrumb styling */
.breadcrumb {
  background-color: transparent;
  padding: 0;
  margin-bottom: 0.5rem;
}

.breadcrumb-item a {
  color: var(--color-secondary);
  text-decoration: none;
}

.breadcrumb-item a:hover {
  color: var(--color-primary);
}