:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --ink: #1a2332;
    --muted: #5c6b7a;
    --line: #d8e0e8;
    --accent: #0b6e4f;
    --accent-hover: #095c42;
    --danger: #b42318;
    --warn: #9a6700;
    --ok: #0b6e4f;
    --radius: 6px;
    --font: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 1.5rem; }
.narrow { max-width: 420px; margin: 4rem auto; padding: 0 1rem; }

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    padding: 0.85rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand { font-weight: 700; color: var(--ink); font-size: 1.05rem; }
.brand:hover { text-decoration: none; }

.nav { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
.nav a { color: var(--muted); font-size: 0.95rem; }
.nav a.active, .nav a:hover { color: var(--accent); }

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.card + .card { margin-top: 1rem; }

h1 { font-size: 1.4rem; margin: 0 0 1rem; }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem;
}

.stat .label { color: var(--muted); font-size: 0.85rem; }
.stat .value { font-size: 1.6rem; font-weight: 700; margin-top: 0.25rem; }

.table-wrap { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

th, td {
    text-align: left;
    padding: 0.65rem 0.5rem;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
}

th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }

.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.btn {
    display: inline-block;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
}

.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); text-decoration: none; color: #fff; }

.btn-secondary {
    background: var(--surface);
    color: var(--ink);
    border-color: var(--line);
}

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

.btn-danger {
    background: var(--surface);
    color: var(--danger);
    border-color: #f0b4ae;
}

.btn-danger:hover { background: #fef3f2; color: var(--danger); }

.btn-sm { padding: 0.25rem 0.55rem; font-size: 0.8rem; }

.badge {
    display: inline-block;
    padding: 0.15rem 0.45rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-ok { background: #e8f5ef; color: var(--ok); }
.badge-off { background: #f2f4f7; color: var(--muted); }

.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    border: 1px solid var(--line);
}

.flash-ok { background: #e8f5ef; border-color: #b7e0cc; color: var(--ok); }
.flash-err { background: #fef3f2; border-color: #f0b4ae; color: var(--danger); }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.35rem; font-weight: 600; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    font: inherit;
    background: #fff;
}

.form-group textarea { min-height: 160px; resize: vertical; }
.form-group .hint { color: var(--muted); font-size: 0.8rem; margin-top: 0.25rem; }
.form-check { display: flex; align-items: center; gap: 0.5rem; }
.form-check input { width: auto; }

.error { color: var(--danger); font-size: 0.85rem; margin-top: 0.25rem; }

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.muted { color: var(--muted); }
.unread { font-weight: 700; }

.mail-layout {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 1rem;
}

@media (max-width: 720px) {
    .mail-layout { grid-template-columns: 1fr; }
}

.folder-list a {
    display: block;
    padding: 0.4rem 0.5rem;
    color: var(--muted);
    border-radius: var(--radius);
}

.folder-list a:hover, .folder-list a.active {
    background: #e8f5ef;
    color: var(--accent);
    text-decoration: none;
}

.message-body {
    border-top: 1px solid var(--line);
    padding-top: 1rem;
    margin-top: 1rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.message-meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 0.5rem; }

.home-hero {
    max-width: 640px;
    margin: 4rem auto;
    text-align: center;
    padding: 0 1rem;
}

.home-hero h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.home-actions { display: flex; gap: 0.75rem; justify-content: center; margin-top: 1.5rem; flex-wrap: wrap; }