:root {
    --erm-primary: #246985;
    --erm-primary-dark: #1d556c;
    --erm-primary-darker: #164457;
    --erm-accent: #19afa8;
    --erm-accent-dark: #148c87;
    --erm-secondary: #f8f9fa;
    --erm-text: #2d3a43;
    --erm-table-border: rgba(36, 105, 133, 0.25);
    --erm-table-stripe: rgba(25, 175, 168, 0.05);
    --erm-table-hover: rgba(25, 175, 168, 0.12);
}

body {
    font-family: "Open Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--erm-text);
    background-color: var(--erm-secondary);
}

a {
    color: var(--erm-primary);
}

a:hover,
a:focus {
    color: var(--erm-primary-dark);
}

.nav-link {
    color: var(--erm-primary);
    font-weight: 500;
    transition: color 0.2s ease-in-out;
}

.nav-link:hover,
.nav-link:focus {
    color: var(--erm-accent);
}

.navbar-brand {
    letter-spacing: .04em;
}

.navbar {
    border-bottom: 3px solid var(--erm-accent);
}

.text-primary {
    color: var(--erm-primary) !important;
}

.btn-primary,
.btn-outline-secondary,
.btn-accent {
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--erm-primary) 0%, var(--erm-primary-dark) 100%);
    border-color: var(--erm-primary-dark);
    color: #ffffff;
    box-shadow: 0 6px 18px rgba(36, 105, 133, 0.25);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background: linear-gradient(135deg, var(--erm-primary-dark) 0%, var(--erm-primary-darker) 100%);
    border-color: var(--erm-primary-darker);
    color: #ffffff;
    box-shadow: 0 8px 22px rgba(36, 105, 133, 0.32);
    transform: translateY(-1px);
}

.btn-outline-secondary {
    color: var(--erm-primary);
    border-color: var(--erm-accent);
    background-color: #ffffff;
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus,
.btn-outline-secondary:active {
    color: #ffffff;
    background-color: var(--erm-accent);
    border-color: var(--erm-accent-dark);
    box-shadow: 0 4px 14px rgba(25, 175, 168, 0.28);
    transform: translateY(-1px);
}

.btn-accent {
    background: linear-gradient(135deg, var(--erm-accent) 0%, var(--erm-accent-dark) 100%);
    border-color: var(--erm-accent-dark);
    color: #ffffff;
}

.btn-accent:hover,
.btn-accent:focus,
.btn-accent:active {
    background: linear-gradient(135deg, var(--erm-accent-dark) 0%, var(--erm-primary-dark) 100%);
    border-color: var(--erm-primary-dark);
    color: #ffffff;
    transform: translateY(-1px);
}

.table {
    border-color: var(--erm-table-border);
    box-shadow: 0 10px 32px rgba(13, 39, 52, 0.08);
    overflow: hidden;
    border-radius: 0.75rem;
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    background-color: var(--erm-primary);
    color: #ffffff;
    border-color: var(--erm-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.table > :not(caption) > * > * {
    background-color: #ffffff;
    border-bottom-color: var(--erm-table-border);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: var(--erm-table-stripe);
}

.table-hover > tbody > tr:hover > * {
    background-color: var(--erm-table-hover);
}

.table caption {
    color: var(--erm-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer {
    background: #ffffff;
    border-top: 1px solid rgba(36, 105, 133, 0.12);
    padding: 1.5rem 0;
}

.footer a {
    color: var(--erm-primary);
    text-decoration: none;
}

.main-body {
    min-height: calc(100vh - 200px);
}