:root, [data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --card-bg: #ffffff;
    --nav-bg: #f8f9fa;
    --input-bg: #ffffff;
    --input-border: #ced4da;
}

[data-theme="dark"] {
    --bg-primary: #0f1923;
    --bg-secondary: #152238;
    --text-primary: #c8ddf0;
    --text-secondary: #7a9bbd;
    --border-color: #1e3a5f;
    --card-bg: #152238;
    --nav-bg: #0d2137;
    --input-bg: #0f1923;
    --input-border: #1e3a5f;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
}

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

[data-theme="dark"] .navbar {
    --bs-navbar-color: var(--text-primary);
    --bs-navbar-hover-color: var(--text-primary);
    --bs-navbar-active-color: var(--text-primary);
    --bs-navbar-brand-color: var(--text-primary);
    --bs-navbar-brand-hover-color: var(--text-primary);
    --bs-navbar-toggler-border-color: var(--border-color);
}

.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

.form-control, .form-select {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
    background-color: var(--input-bg);
    color: var(--text-primary);
}

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

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

.stat-card {
    padding: 1.5rem;
    border-radius: 0.5rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    text-align: center;
}

.stat-card h3 {
    margin-bottom: 0.25rem;
    font-size: 2rem;
}

.stat-card p {
    margin-bottom: 0;
    color: var(--text-secondary);
}

/* ── Dark mode overrides for Bootstrap components ── */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--text-primary);
}

[data-theme="dark"] .card-header {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: var(--border-color);
}

[data-theme="dark"] .form-label,
[data-theme="dark"] .form-text,
[data-theme="dark"] label {
    color: var(--text-primary);
}

[data-theme="dark"] .btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .btn-outline-secondary:hover,
[data-theme="dark"] .btn-outline-secondary:focus {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .navbar-toggler {
    border-color: var(--border-color);
}

[data-theme="dark"] .navbar-toggler-icon {
    filter: invert(1);
}

[data-theme="dark"] .border-bottom,
[data-theme="dark"] .border-top {
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .form-control:disabled,
[data-theme="dark"] .form-select:disabled {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}