:root {
    --primary: #e60012;
    --dark: #121212;
    --gray: #f4f4f4;
    --text: #333333;
}
* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { background: var(--gray); color: var(--text); }
.login-body { background: var(--dark); display: flex; justify-content: center; align-items: center; height: 100vh; }
.login-container { background: #1a1a1a; padding: 40px; border-radius: 12px; width: 100%; max-width: 400px; border: 1px solid #333; color: #fff; }
.brand-header h1 { color: var(--primary); font-size: 24px; text-align: center; }
.tagline { text-align: center; font-size: 12px; color: #aaa; margin-bottom: 20px; letter-spacing: 2px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 5px; font-size: 14px; }
.form-group input { width: 100%; padding: 10px; background: #222; border: 1px solid #444; border-radius: 6px; color: #fff; }
.btn { padding: 10px 20px; border: none; border-radius: 6px; cursor: pointer; font-weight: bold; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-warning { background: #f39c12; color: #fff; }
.btn-block { width: 100%; }
.alert { padding: 10px; border-radius: 6px; margin-bottom: 15px; font-size: 14px; }
.alert-success { background: #27ae60; color: #fff; }
.alert-danger { background: var(--primary); color: #fff; }
.admin-layout { display: flex; height: 100vh; }
.sidebar { width: 250px; background: var(--dark); color: #fff; padding: 20px; }
.sidebar h2 { color: var(--primary); margin-bottom: 30px; }
.sidebar nav a { display: block; color: #aaa; padding: 10px 0; text-decoration: none; transition: 0.2s; }
.sidebar nav a:hover, .sidebar nav a.active { color: #fff; font-weight: bold; }
.main-content { flex: 1; padding: 30px; overflow-y: auto; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-top: 20px; }
.stat-card { background: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,10,0.05); }
.staff-layout { padding-bottom: 70px; }
.app-header { background: var(--dark); color: #fff; padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; }
.container { max-width: 600px; margin: 20px auto; padding: 0 15px; }
.card { background: #fff; padding: 20px; border-radius: 10px; margin-bottom: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.mobile-nav { position: fixed; bottom: 0; left: 0; right: 0; background: var(--dark); display: flex; justify-content: space-around; padding: 12px 0; border-top: 1px solid #333; }
.mobile-nav a { color: #aaa; text-decoration: none; font-size: 14px; }
.mobile-nav a.active { color: var(--primary); font-weight: bold; }
.status-badge { padding: 6px 12px; border-radius: 20px; display: inline-block; font-weight: bold; font-size: 13px; }
.status-badge.checking { background: #f1c40f; color: #000; }
.status-badge.verified { background: #27ae60; color: #fff; }
.status-badge.failed { background: var(--primary); color: #fff; }