:root {
    --primary-color: #0f766e;
    --secondary-color: #115e59;
    --primary-gradient-end: #0d9488;
    --primary-rgb: 15, 118, 110;
    --accent-color: #14b8a6;
    --theme-color: #0f766e;
    --body-bg: #f0fdfa;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--body-bg);
}

.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 55%, #0c4a6e 100%);
    box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.25);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.3rem;
}

.card {
    border: none;
    box-shadow: 0 2px 16px rgba(var(--primary-rgb), 0.08);
    border-radius: 10px;
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    font-weight: 600;
    border-radius: 10px 10px 0 0 !important;
    border-bottom: none;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus,
.btn-outline-primary:active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.stat-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card-link {
    color: inherit;
}

.stat-card-link:hover {
    color: inherit;
}

.stat-card-link:hover .stat-card,
.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.18);
}

.stat-card-link:focus-visible {
    outline: none;
}

.stat-card-link:focus-visible .stat-card {
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.35);
}

.table thead {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
}

.badge-draft { background-color: #6c757d; }
.badge-pending-approval { background-color: #ffc107; color: #000; }
.badge-approved { background-color: #28a745; }
.badge-rejected { background-color: #dc3545; }
.badge-sent { background-color: #0d9488; }
.badge-converted { background-color: #7c3aed; }

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

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

/* Login page */
body.login-page {
    background: linear-gradient(145deg, var(--secondary-color) 0%, var(--primary-color) 45%, #0c4a6e 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.login-card {
    max-width: 400px;
    width: 100%;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.22);
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 2rem;
    text-align: center;
}

.login-body {
    padding: 2rem;
}

.login-body .btn-primary {
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
}

.login-body .input-group-text {
    background-color: rgba(var(--primary-rgb), 0.08);
    border-color: rgba(var(--primary-rgb), 0.2);
    color: var(--primary-color);
}