* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, Segoe UI, Roboto, sans-serif; background: #f4f5f7; color: #1a1a1a; }

.hidden { display: none !important; }

/* Login screen */
#login-screen { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-box { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); width: 320px; }
.login-box h1 { font-size: 20px; margin-bottom: 24px; }
.login-box input { width: 100%; padding: 10px 12px; margin-bottom: 12px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; }
.login-box button { width: 100%; padding: 10px; background: #2563eb; color: #fff; border: none; border-radius: 6px; font-size: 14px; cursor: pointer; }
.login-box button:hover { background: #1d4ed8; }
.error-text { color: #dc2626; font-size: 13px; margin-top: 8px; }

/* App layout */
#app { display: none; height: 100vh; }
#app.active { display: flex; }

.sidebar { width: 220px; background: #1a1a2e; color: #fff; padding: 20px 0; flex-shrink: 0; }
.sidebar h2 { padding: 0 20px 20px; font-size: 16px; border-bottom: 1px solid #333; margin-bottom: 10px; }
.nav-item { padding: 12px 20px; cursor: pointer; font-size: 14px; color: #ccc; }
.nav-item:hover { background: #26264a; color: #fff; }
.nav-item.active { background: #2563eb; color: #fff; }

.content { flex: 1; padding: 30px; overflow-y: auto; }
.content h1 { font-size: 22px; margin-bottom: 20px; }

.card { background: #fff; border-radius: 10px; padding: 20px; margin-bottom: 16px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid #eee; font-size: 14px; }
th { color: #666; font-weight: 500; }

.btn { padding: 8px 14px; border: none; border-radius: 6px; font-size: 13px; cursor: pointer; }
.btn-primary { background: #2563eb; color: #fff; }
.btn-danger { background: #dc2626; color: #fff; }
.btn-secondary { background: #e5e7eb; color: #1a1a1a; }
.btn-small { padding: 5px 10px; font-size: 12px; margin-right: 6px; }

.form-row { margin-bottom: 12px; }
.form-row label { display: block; font-size: 13px; margin-bottom: 4px; color: #555; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; padding: 8px 10px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px;
}

.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-confirmed { background: #d1fae5; color: #065f46; }
.badge-rejected { background: #fee2e2; color: #991b1b; }