:root {
    --primary: #1f4e5f;
    --primary-dark: #163944;
    --accent: #2f8f7d;
    --bg: #f4f6f7;
    --card: #ffffff;
    --border: #e0e4e6;
    --text: #263238;
    --text-muted: #6b7a80;
    --danger: #c0392b;
    --success: #2f8f4e;
    --radius: 8px;
}

* { box-sizing: border-box; }

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

a { color: var(--primary); }

.topbar {
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    padding: 12px 24px;
}
.topbar-brand { font-weight: 700; font-size: 1.1rem; }
.topbar-brand span { color: #a9dccd; }
.topbar-nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.topbar-nav a {
    color: #dfe9ec; text-decoration: none; padding: 8px 12px; border-radius: var(--radius);
    font-size: 0.92rem;
}
.topbar-nav a:hover, .topbar-nav a.active { background: rgba(255,255,255,0.15); color: #fff; }
.topbar-user { display: flex; align-items: center; gap: 12px; font-size: 0.88rem; color: #dfe9ec; }
.btn-logout {
    background: rgba(255,255,255,0.12); color: #fff !important; padding: 6px 12px;
    border-radius: var(--radius); text-decoration: none; font-size: 0.85rem;
}
.btn-logout:hover { background: rgba(255,255,255,0.25); }

.container { max-width: 1100px; margin: 32px auto; padding: 0 24px 60px; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }

h1 { font-size: 1.5rem; margin: 0 0 4px; }
h2 { font-size: 1.2rem; }
.subtitle { color: var(--text-muted); margin-bottom: 24px; }

.page-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }

.btn {
    display: inline-block; background: var(--primary); color: #fff; border: none;
    padding: 10px 18px; border-radius: var(--radius); text-decoration: none; font-size: 0.92rem;
    cursor: pointer;
}
.btn:hover { background: var(--primary-dark); }
.btn-accent { background: var(--accent); }
.btn-accent:hover { background: #256e60; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #922b1c; }
.btn-secondary { background: #7f8c8d; }
.btn-secondary:hover { background: #6b7677; }
.btn-sm { padding: 6px 12px; font-size: 0.82rem; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.92rem; vertical-align: top; }
th { color: var(--text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover td { background: #fafcfc; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-active { background: #e3f3e6; color: var(--success); }
.badge-inactive { background: #f5e6e4; color: var(--danger); }
.badge-role-admin { background: #fdecd2; color: #9c6b0b; }
.badge-role-user { background: #e2ecf5; color: #2c5c8a; }

form.stacked label { display: block; font-weight: 600; font-size: 0.85rem; margin: 16px 0 6px; }
form.stacked label:first-child { margin-top: 0; }
input[type=text], input[type=password], input[type=number], input[type=date], textarea, select {
    width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius);
    font-size: 0.95rem; font-family: inherit;
}
textarea { min-height: 120px; resize: vertical; }
.hint { color: var(--text-muted); font-size: 0.82rem; margin-top: 4px; }
.form-actions { margin-top: 24px; display: flex; gap: 10px; }

.flash { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.9rem; }
.flash-success { background: #e3f3e6; color: #256a3d; }
.flash-error { background: #f9e4e1; color: #922b1c; }

.login-wrapper {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    padding: 20px;
}
.login-box { background: #fff; padding: 40px; border-radius: 12px; width: 100%; max-width: 380px; box-shadow: 0 20px 50px rgba(0,0,0,0.25); }
.login-box h1 { text-align: center; margin-bottom: 4px; }
.login-box .subtitle { text-align: center; margin-bottom: 28px; }
.login-box .btn { width: 100%; text-align: center; margin-top: 8px; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.stat-card .num { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-card .label { color: var(--text-muted); font-size: 0.85rem; }