:root {
    --primary: #0d6e5c;
    --primary-dark: #095041;
    --bg: #f4f6f5;
    --surface: #ffffff;
    --border: #dfe4e2;
    --text: #1f2a27;
    --text-muted: #647a73;
    --danger: #c0392b;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

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

.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 220px;
    background: var(--primary-dark);
    color: #fff;
    padding: 24px 0;
    flex-shrink: 0;
}

.sidebar h1 {
    font-size: 18px;
    padding: 0 20px 20px;
    margin: 0;
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

.sidebar nav a {
    display: block;
    color: #d9ece7;
    padding: 12px 20px;
    font-size: 14px;
}

.sidebar nav a:hover, .sidebar nav a.active {
    background: rgba(255,255,255,0.1);
    color: #fff;
    text-decoration: none;
}

.main { flex: 1; display: flex; flex-direction: column; }

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.content { padding: 24px; flex: 1; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.stat-cards { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    min-width: 160px;
    flex: 1;
}

.stat-card .value { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-card .label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
tr:hover td { background: #fafcfb; }

.btn {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 9px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    cursor: pointer;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-secondary { background: var(--text-muted); }
.btn-danger { background: var(--danger); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

form.inline { display: inline; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

input, select, textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); outline-offset: -1px; }

.filters { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; align-items: end; }
.filters .form-group { margin-bottom: 0; min-width: 150px; }

.flash {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
}
.flash.success { background: #e3f5ef; color: var(--primary-dark); }
.flash.error { background: #fbeae8; color: var(--danger); }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.badge.free { background: #e3f5ef; color: var(--primary-dark); }
.badge.paid { background: #fdf1e3; color: #a0651b; }
.badge.active { background: #e3f5ef; color: var(--primary-dark); }
.badge.inactive { background: #f0f0f0; color: var(--text-muted); }

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-dark);
}
.login-box {
    background: var(--surface);
    padding: 36px;
    border-radius: var(--radius);
    width: 340px;
}
.login-box h1 { font-size: 20px; margin-top: 0; text-align: center; color: var(--primary-dark); }
.login-box .btn { width: 100%; margin-top: 8px; }

.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.page-header h2 { margin: 0; }