:root {
    --ink: #1f2937;
    --muted: #6b7280;
    --line: #e2e5e9;
    --bg: #f5f6f8;
    --panel: #ffffff;
    --accent: #2f6f4f;
    --accent-dark: #1f4d36;
    --error: #b3261e;
    --error-bg: #fdecea;
    --success: #1f4d36;
    --success-bg: #eaf4ee;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--ink);
    background: var(--bg);
}

h1, h2, h3 {
    font-family: Georgia, 'Times New Roman', serif;
    color: var(--ink);
    margin: 0 0 .5em;
}

a { color: var(--accent-dark); }

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
    padding: 24px;
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-shell .panel {
    width: 100%;
    max-width: 380px;
}

.form-group { margin-bottom: 16px; }

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font-size: 16px;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.btn {
    display: inline-block;
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    background: var(--accent-dark);
    color: #fff;
    font-size: 15px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
}

.btn:hover { background: var(--accent); }

.btn-full { width: 100%; }

.btn-secondary {
    background: transparent;
    color: var(--accent-dark);
    border: 1px solid var(--line);
}

.btn-secondary:hover { background: var(--bg); }

.btn-link {
    background: none;
    border: none;
    padding: 0;
    font: inherit;
    color: var(--accent-dark);
    cursor: pointer;
    text-decoration: underline;
}
.btn-link:hover { color: var(--accent); }

.alert {
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-error { background: var(--error-bg); color: var(--error); }
.alert-success { background: var(--success-bg); color: var(--success); }

.text-muted { color: var(--muted); font-size: 14px; }

.mfa-code {
    font-size: 24px;
    letter-spacing: 6px;
    text-align: center;
}

/* ── App chrome (header/footer/nav) ─────────────────────────────────────── */

.app-header {
    background: var(--panel);
    border-bottom: 1px solid var(--line);
}

.app-header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.app-brand { font-family: Georgia, serif; font-size: 20px; font-weight: bold; text-decoration: none; color: var(--ink); }

.app-nav { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.app-nav a { color: var(--ink); text-decoration: none; font-size: 14px; }
.app-nav a:hover { color: var(--accent-dark); }
.app-nav .active { color: var(--accent-dark); font-weight: bold; }

.impersonation-banner {
    background: #fff4e5;
    border-bottom: 1px solid #f0c674;
    color: #7a5300;
    padding: 8px 20px;
    font-size: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

.app-footer {
    border-top: 1px solid var(--line);
    background: var(--panel);
    margin-top: 40px;
}

.app-footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 16px 20px;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    font-size: 13px;
}

.app-footer-inner a { color: var(--muted); text-decoration: none; }
.app-footer-inner a:hover { color: var(--accent-dark); }

/* ── Stat tiles / cards / tables ─────────────────────────────────────────── */

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.stat-tile {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 16px;
}

.stat-tile .value { font-size: 28px; font-weight: bold; font-family: Georgia, serif; }
.stat-tile .label { font-size: 13px; color: var(--muted); }

.skeleton {
    background: linear-gradient(90deg, #e9ebee 25%, #f2f3f5 37%, #e9ebee 63%);
    background-size: 400% 100%;
    animation: skeleton-loading 1.4s ease infinite;
    border-radius: 4px;
    color: transparent;
}

@keyframes skeleton-loading {
    0% { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
}

table.data-table { width: 100%; border-collapse: collapse; }
table.data-table th, table.data-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
}
table.data-table th { color: var(--muted); font-weight: bold; font-size: 12px; text-transform: uppercase; }

@media (max-width: 640px) {
    .app-header-inner { flex-direction: column; align-items: flex-start; }
    .app-nav { gap: 10px; }
}