:root {
    --primary-dark: #1B1B2F;
    --primary-red: #B3221E;
    --red-hover: #8F1B18;
    --background: #F5F6FA;
    --card-bg: #FFFFFF;
    --border: #DCDFE6;
    --text-dark: #2B2B2B;
    --text-muted: #6B6B6B;
    --success-green: #2E7D32;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: var(--background);
    color: var(--text-dark);
}

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

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--primary-dark);
    color: #fff;
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 0 20px 24px; }
.brand-icon {
    width: 36px; height: 36px; border-radius: 8px;
    background: var(--primary-red); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: bold; font-size: 20px;
}
.brand-title { font-weight: bold; font-size: 16px; }
.brand-sub { font-size: 12px; opacity: .7; }
.nav { display: flex; flex-direction: column; flex: 1; }
.nav a {
    padding: 14px 20px; color: #d6d6e0; text-decoration: none;
    font-weight: 600; font-size: 14px; border-left: 4px solid transparent;
}
.nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav a.active { background: rgba(255,255,255,0.10); color: #fff; border-left-color: var(--primary-red); }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.1); }
.user-name { font-weight: bold; font-size: 14px; }
.user-role { font-size: 12px; opacity: .7; margin-bottom: 12px; }

.main-content { flex: 1; padding: 28px 32px; overflow-x: auto; }

/* Buttons - bold, high-contrast, clearly clickable */
.btn {
    display: inline-block;
    font-weight: 700;
    font-size: 14px;
    padding: 10px 20px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
}
.btn-block { display: block; width: 100%; }
.btn-primary { background: var(--primary-red); color: #fff; }
.btn-primary:hover { background: var(--red-hover); }
.btn-secondary { background: #E9EAF0; color: var(--text-dark); }
.btn-secondary:hover { background: #d8dae3; }
.btn-danger { background: #8B1E1E; color: #fff; }
.btn-danger:hover { background: #6f1717; }
.btn-success { background: var(--success-green); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 12px; }

/* Cards / layout */
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.page-header h1 { font-size: 22px; margin: 0; color: var(--primary-dark); }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 20px; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.stat-value { font-size: 28px; font-weight: bold; color: var(--primary-dark); }
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
table th, table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
table th { background: var(--primary-dark); color: #fff; font-weight: 700; }
table tr:hover td { background: #FBF3F2; }

form.inline-form { display: inline; }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.form-group { margin-bottom: 4px; }
.form-group label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 6px; color: var(--text-dark); }
.form-group input, .form-group select {
    width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 6px;
    font-size: 14px; font-family: inherit;
}
.form-actions { margin-top: 18px; display: flex; gap: 10px; }

.badge { padding: 4px 10px; border-radius: 12px; font-size: 12px; font-weight: 700; color: #fff; }
.badge-pending { background: #E0A800; }
.badge-approved { background: #2E7D32; }
.badge-rejected { background: #8B1E1E; }
.badge-completed { background: #1565C0; }

.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-weight: 600; }
.alert-success { background: #E7F5E8; color: var(--success-green); border: 1px solid #B8DEBB; }
.alert-error { background: #FBE7E6; color: var(--primary-red); border: 1px solid #F2C4C2; }

/* Login page */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--background); }
.login-card { width: 380px; background: var(--card-bg); border-radius: 14px; overflow: hidden; box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
.login-header { background: linear-gradient(135deg, #E8491D, #B3221E); color: #fff; padding: 32px 24px; text-align: center; }
.login-icon { width: 60px; height: 60px; border-radius: 50%; background: rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; font-size: 28px; font-weight: bold; }
.login-header h1 { margin: 0; font-size: 22px; }
.login-header p { margin: 4px 0 0; font-size: 12px; letter-spacing: 1px; text-transform: uppercase; opacity: .9; }
.login-body { padding: 28px 24px; }
.demo-hint { text-align: center; font-size: 12px; color: var(--text-muted); margin-top: 14px; }